ACF high-precision feeding mechanism and ACF high-precision feeding system

Abstract

The present application relates to the technical field of ACF attaching machines, and in particular to an ACF high-precision feeding mechanism, which includes a feed wheel, a driving member for driving the feed wheel to rotate, and a connecting assembly, wherein the feed wheel includes an integrally arranged wheel portion and a connecting portion arranged at the center of the wheel portion, and the wheel portion is used to contact the ACF and drive the ACF to move; the driving member includes a servo motor, and the output shaft of the servo motor is connected to the connecting portion through a coupling; it includes a bearing seat arranged on the servo motor and a bearing kit arranged on the bearing seat, and the bearing kit is rotatably connected to the connecting portion. The present application also relates to an ACF high-precision feeding system: including a frame, the frame is provided with: the above-mentioned ACF high-precision feeding mechanism, an ACF clamping mechanism for pressing the ACF against the ACF high-precision feeding mechanism, and a CCD visual correction mechanism for detecting and adjusting the position of the ACF delivered by the ACF high-precision feeding mechanism. Through the present application, the feeding accuracy of the ACF can be improved, thereby improving the accuracy of the attachment of the ACF.

Description

Technical Field

[0001] The present application relates to the technical field of ACF attaching machines, and in particular to an ACF high-precision feeding mechanism and an ACF high-precision feeding system. Background Art

[0002] ACF is the abbreviation of Anisotropic Conductive Film. Its characteristic is that the resistance characteristics of the Z-axis electrical conduction direction and the XY insulation plane are significantly different. When the difference between the Z-axis conduction resistance value and the XY plane insulation resistance value exceeds a certain ratio, it can be called good conductive anisotropy. Conductive principle: Use conductive particles to connect the electrodes between the IC chip and the substrate to make them conductive, while avoiding short circuits between adjacent electrodes, and achieving the purpose of conduction only in the Z-axis direction. ACF attachment machine is suitable for pre-attaching ACF of various widths on TP, LCD or PCB, and is used in TAB, COG liquid crystal module production or the connection between high-density FPC and PCB.

[0003] Before the ACF attaching machine carries out the attaching process, it must first transport the ACF to the attaching station. At present, the general ACF feeding mechanism uses a motor to drive the roller, and the friction between the roller and the ACF drives the ACF to move. However, due to the tolerance between the roller and the motor, the ACF feeding accuracy is ±0.5mm in the X direction and ±0.5mm in the Y direction, which is difficult to meet the current ACF attachment accuracy requirements; at the same time, there may be a time difference between the motor and the roller, which may cause different tension forces of the ACF at each feeding, causing the ACF feeding position and feeding length to change, and the ACF feeding accuracy is low, thus affecting the ACF attachment accuracy. Summary of the invention

[0004] One object of the present application is to provide an ACF high-precision feeding mechanism, which can improve the accuracy of ACF feeding.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] An ACF high-precision feeding mechanism, comprising:

[0007] A feeding wheel, comprising an integrally arranged wheel portion and a connecting portion arranged at the center of the wheel portion, wherein the wheel portion is used to contact the ACF and drive the ACF to move;

[0008] A driving member, comprising a servo motor, wherein an output shaft of the servo motor is connected to the connecting portion via a coupling;

[0009] The connecting component comprises a bearing seat arranged on the servo motor and a bearing kit arranged on the bearing seat, wherein the bearing kit is rotatably connected to the connecting part.

[0010] Furthermore, the servo motor is also provided with an adjustment component for adjusting the position of the bearing seat, the adjustment component includes a fixed block fixed to one end of the servo motor close to the output shaft and a plurality of adjustment rods, the fixed block is provided with a notch for the output shaft of the servo motor to pass through, both ends of the adjustment rod are respectively provided with positive threads and negative threads and the two ends are respectively threadedly connected with the fixed block and the bearing seat, and the plurality of adjustment rods are circumferentially distributed around the output shaft of the servo motor.

[0011] Furthermore, the bearing kit includes a first angular contact ball bearing, a second angular contact ball bearing and a sleeve, the sleeve is sleeved on the connecting portion and the two ends are respectively connected to one side of the inner ring of the first angular contact ball bearing and one side of the inner ring of the second angular contact ball bearing, the outer ring of the first angular contact ball bearing and the outer ring of the second angular contact ball bearing are respectively fixed on the bearing seat, and the inner ring of the first angular contact ball bearing and the inner ring of the second angular contact ball bearing are respectively sleeved on the connecting portion.

[0012] Furthermore, the bearing seat includes a mounting hole for installing a sleeve, and the mounting hole includes a first hole section, a second hole section and a third hole section in sequence, the third hole section is close to the servo motor, the first hole section and the third hole section are respectively matched with the outer ring of the first angular contact ball bearing and the outer ring of the second angular contact ball bearing, and the diameter of the second hole section is larger than the diameter of the sleeve.

[0013] Furthermore, the connecting portion is threadedly connected with a locking nut for reinforcing the bearing kit, and the locking nut is located between the coupling and the second angular contact ball bearing.

[0014] Furthermore, the connecting portion includes a first section for connecting the coupling, a second section for connecting the locking nut, a third section for connecting the bearing kit and a fourth section for connecting the wheel portion, the fourth section is protruding from the bearing seat, the diameter of the fourth section is larger than the diameter of the third section, the diameter of the third section is larger than the diameter of the second section, the diameter of the second section is larger than the diameter of the first section, the second section is provided with a thread that cooperates with the locking nut thread, and rotating the locking nut can make the inner ring of the first angular contact ball bearing press against the fourth section.

[0015] Furthermore, at least one set of mutually parallel rotating surfaces is arranged on the outer wall of the fourth section.

[0016] Furthermore, the outer wall of the wheel portion is provided with laser-cut straight lines for contacting the ACF.

[0017] Another object of the present application is to provide an ACF high-precision feeding system, which can improve the accuracy of ACF attachment.

[0018] In order to solve the above technical problems, this application adopts the following technical solutions:

[0019] An ACF high-precision feeding system comprises a frame, wherein the frame is provided with:

[0020] A high-precision ACF feeding mechanism as described above;

[0021] ACF pressing mechanism, used to press the ACF against the ACF high-precision feeding mechanism;

[0022] The CCD visual correction mechanism is used to detect and adjust the position of the ACF delivered by the ACF high-precision feeding mechanism.

[0023] Furthermore, the ACF pressing mechanism includes a pressing wheel for pressing the ACF against the wheel portion and a cylinder for driving the pressing wheel to move closer to or away from the wheel portion, a mounting block is provided on the telescopic shaft of the cylinder, the pressing wheel is rotatably supported on the mounting block, and a buffer sleeve is provided on the pressing wheel.

[0024] Beneficial effects of this application:

[0025] First, an ACF high-precision feeding mechanism, in which a servo motor drives a feed wheel to rotate, and the feed wheel is integrated, which is convenient for processing. At the same time, compared with the existing complex wheel and shaft matching, the assembly cumulative tolerance between the parts is reduced, thereby improving the feeding accuracy of the ACF;

[0026] Secondly, during the specific work, the ACF is placed on the wheel part, and the cylinder drives the pressure wheel to approach the wheel part, so that the ACF is clamped between the wheel part and the pressure wheel. The servo motor drives the wheel part to rotate, and the wheel part can drive the ACF to move for feeding. Finally, before the ACF enters the attachment area, it is subjected to secondary inspection and adjustment through the CCD visual correction mechanism to improve the feeding accuracy of the ACF, and at the same time greatly improve the attachment accuracy of the ACF. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic diagram of the structure of the ACF high-precision feeding mechanism system provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of the ACF high-precision feeding mechanism provided in an embodiment of the present application;

[0030] Figure 3 A structural exploded diagram of the ACF high-precision feeding mechanism provided in an embodiment of the present application;

[0031] Figure 4 A cross-sectional view of an ACF high-precision feeding mechanism provided in an embodiment of the present application;

[0032] Figure 5 A schematic diagram of the structure of the ACF clamping mechanism provided in an embodiment of the present application.

[0033] Description of reference numerals: 100, frame; 200, ACF high-precision feeding mechanism; 210, feeding wheel; 211, wheel portion; 2111, laser cutting straight lines; 212, connecting portion; 2121, first section; 2122, second section; 2123, third section; 2124, fourth section; 2125, rotating surface; 220, servo motor; 221, fixed block; 222, adjusting rod; 2221, parallel surface; 223, coupling; 230, Bearing kit; 231, first angular contact ball bearing; 232, second angular contact ball bearing; 233, bushing; 240, locking nut; 250, bearing seat; 251, connecting plate; 252, mounting hole; 2521, first hole section; 2522, second hole section; 2523, third hole section; 300, ACF clamping mechanism; 310, cylinder; 320, pressing wheel; 330, mounting block; 331, bracket; 400, CCD visual correction mechanism. DETAILED DESCRIPTION

[0034] In order to make those skilled in the art better understand the present application, the technical solutions in the embodiments of the present application are clearly and completely described below. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0035] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] The embodiment of the present application provides an ACF high-precision feeding mechanism 200 including: a feed wheel 210, a driving member for driving the feed wheel 210 to rotate, and a connecting assembly, wherein the feed wheel 210 includes an integrally arranged wheel portion 211 and a connecting portion 212 arranged at the center of the wheel portion 211, and the wheel portion 211 is used to contact the ACF and drive the ACF to move; the driving member includes a servo motor 220, and the output shaft of the servo motor 220 is connected to the connecting portion 212 through a coupling 223; and includes a bearing seat 250 arranged on the servo motor 220 and a bearing kit 230 arranged on the bearing seat 250, and the bearing kit 230 is rotatably connected to the connecting portion 212.

[0037] During specific operation, the servo motor 220 drives the feed wheel 210 to rotate. The feed wheel 210 is integrated to facilitate processing. At the same time, compared with the existing complex wheel and shaft matching, the cumulative assembly tolerance between the parts is reduced, thereby improving the feeding accuracy of the ACF.

[0038] Based on the above-mentioned ACF high-precision feeding mechanism 200, the embodiment of the present application also provides an ACF high-precision feeding system: including a frame 100, wherein the frame 100 is provided with: the above-mentioned ACF high-precision feeding mechanism 200, an ACF pressing mechanism 300 for pressing the ACF against the ACF high-precision feeding mechanism 200, and a CCD vision correction mechanism 400 for detecting and adjusting the position of the ACF delivered by the ACF high-precision feeding mechanism 200.

[0039] During specific work, the ACF is placed on the wheel part 211, and then the ACF is pressed against the wheel part 211 by the ACF pressing mechanism 300. Finally, before the ACF enters the attachment area, it is subjected to secondary inspection and adjustment by the CCD visual correction mechanism 400, and the feeding accuracy of the ACF is controlled to ±0.1mm in the X direction and ±0.1mm in the Y direction, which greatly improves the attachment accuracy of the ACF.

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0041] Example

[0042] like Figure 1 and Figure 2As shown, the present application provides an ACF high-precision feeding system, which includes a frame 100, and the frame 100 is provided with: an ACF high-precision feeding mechanism 200, an ACF pressing mechanism 300 for pressing the ACF against the ACF high-precision feeding mechanism 200, and a CCD visual correction mechanism 400 for detecting and adjusting the position of the ACF delivered by the ACF high-precision feeding mechanism 200. In specific operation, the ACF is placed on the wheel portion 211, and then the ACF is pressed against the wheel portion 211 by the ACF pressing mechanism 300, and finally, before the ACF is about to enter the attachment area, a secondary detection and adjustment is performed by the CCD visual correction mechanism 400.

[0043] Reference Figure 2 and Figure 3 As shown, the ACF high-precision feeding mechanism 200 includes: a feed wheel 210, a driving member and a connecting assembly for driving the feed wheel 210 to rotate, wherein the feed wheel 210 includes an integrally arranged wheel portion 211 and a connecting portion 212 arranged at the center of the wheel portion 211, wherein the wheel portion 211 is used to contact the ACF and drive the ACF to move; the driving member includes a servo motor 220, wherein the output shaft of the servo motor 220 is connected to the connecting portion 212 via a coupling 223; and includes a bearing seat 250 arranged on the servo motor 220 and a bearing kit 230 arranged on the bearing seat 250, wherein the bearing kit 230 is rotatably connected to the connecting portion 212. During specific operation, the servo motor 220 drives the feed wheel 210 to rotate, and the feed wheel 210 is integrally arranged for easy processing. At the same time, compared with the existing complex wheel and shaft matching, the assembly cumulative tolerance between the various parts is reduced, thereby improving the feeding accuracy of the ACF.

[0044] In this embodiment, the servo motor 220 is also provided with an adjustment component (not marked in the figure) for adjusting the position of the bearing seat 250, and the adjustment component includes a fixed block 221 fixed to one end of the servo motor 220 close to the output shaft and a plurality of adjustment rods 222, and the fixed block 221 is provided with a notch (not marked in the figure) for the output shaft of the servo motor 220 to pass through, and the two ends of the adjustment rod 222 are respectively provided with positive threads and negative threads and the two ends are respectively threadedly connected to the fixed block 221 and the bearing seat 250, and the plurality of adjustment rods 222 are circumferentially distributed around the output shaft of the servo motor 220. Specifically, four adjusting rods 222 are provided, four positive threaded holes (not marked in the figure) are provided on the fixing block 221, and four reverse threaded holes (not marked in the figure) are provided on the bearing seat 250, and the positions of the positive threaded holes and the reverse threaded holes are relative. The bearing seat 250 can be fixedly connected to the servo motor 220 through the four adjusting rods 222. When installing the bearing seat 250, the four reverse threaded holes on the bearing seat 250 are aligned with the four positive threaded holes on the fixing block 221, and then the two ends of the adjusting rod 222 are respectively abutted against the positive threaded holes and the reverse threaded holes, and then the adjusting rod 222 is rotated and the bearing seat 250 is pressed, so that the two ends of the adjusting rod 222 are respectively threadedly connected to the positive threaded holes and the reverse threaded holes, thereby fixing the bearing seat 250. At the same time, since the four adjustment rods 222 are distributed around the motor output shaft, the four adjustment rods 222 can be rotated respectively to adjust the coaxiality between the bearing seat 250 and the motor output shaft, thereby improving the coaxiality between the servo motor 220 output shaft and the connecting part 212, thereby improving the transmission efficiency of the servo motor 220.

[0045] Preferably, in order to facilitate the use of a wrench to rotate the adjusting rod 222, a parallel surface 2221 for the wrench to engage is also provided in the middle of the adjusting rod 222. When the bearing seat 250 is connected, if the adjusting rod 222 cannot be turned by hand, the wrench can be engaged with the parallel surface 2221 and rotated. The setting of the parallel surface 2221 can increase the friction between the wrench and the adjusting rod 222, making it easier to rotate the adjusting rod 222.

[0046] Combination Figure 4As shown, the bearing set 230 includes a first angular contact ball bearing 231, a second angular contact ball bearing 232 and a sleeve 233, wherein the sleeve 233 is sleeved on the connecting portion 212 and its two ends are respectively connected to one side of the inner ring of the first angular contact ball bearing 231 and one side of the inner ring of the second angular contact ball bearing 232, wherein the outer ring of the first angular contact ball bearing 231 and the outer ring of the second angular contact ball bearing 232 are respectively fixed on the bearing seat 250, and the inner ring of the first angular contact ball bearing 231 and the inner ring of the second angular contact ball bearing 232 are respectively sleeved on the connecting portion 212. Specifically, the angular contact ball bearing can bear radial load and axial load at the same time and can work at a relatively high speed. The shaft sleeve 233 and the connecting part 212 are matched with each other in tolerance, and the two ends of the shaft sleeve 233 are stepped and respectively engaged with the inner ring of the first angular contact ball bearing 231 and the inner ring of the second angular contact ball bearing 232, so that the bearing kit 230 can be more stably sleeved on the connecting part 212, and the coaxiality between the connecting part 212 and the output shaft of the servo motor 220 during rotation is improved, so that the rotation of the wheel part 211 is more stable, and the feeding accuracy of the ACF is improved.

[0047] Preferably, the bearing seat 250 includes a mounting hole 252 for installing the sleeve 233, and one end of the bearing seat 250 is provided with a connecting disk 251 for connecting the adjusting rod 222, and the reverse threaded hole is located on the connecting disk 251; the mounting hole 252 includes a first hole section 2521, a second hole section 2522 and a third hole section 2523 in sequence, and the third hole section 2523 is close to the servo motor 220, and the first hole section 2521 and the third hole section 2523 are respectively matched with the outer ring of the first angular contact ball bearing 231 and the outer ring of the second angular contact ball bearing 232, and the diameter of the second hole section 2522 is larger than the diameter of the sleeve 233. Specifically, the diameters of the first hole section 2521 and the third hole section 2523 are larger than the diameter of the second hole section 2522, so that the first angular contact ball bearing 231 and the second angular contact ball bearing 232 can be conveniently embedded in the first hole section 2521 and the third hole section 2523 respectively. The first hole section 2521 and the third hole section 2523 can respectively limit the positions of the first angular contact ball bearing 231 and the second angular contact ball bearing 232, and the installation is very convenient; a certain gap is provided between the second hole section 2522 and the shaft sleeve 233, so that the friction between the shaft sleeve 233 and the bearing seat 250 can be reduced when the shaft sleeve 233 rotates, thereby improving the transmission efficiency of the servo motor 220, and at the same time, the first angular contact ball bearing 231 and the second angular contact ball bearing 232 can be installed on the bearing seat 250 more stably, thereby making the rotation of the wheel part 211 more stable and improving the feeding accuracy of the ACF.

[0048] In this embodiment, in order to make the bearing kit 230 more stably installed between the connecting portion 212 and the bearing seat 250, the connecting portion 212 is threadedly connected with a locking nut 240 for reinforcing the bearing kit 230, and the locking nut 240 is located between the coupling 223 and the second angular contact ball bearing 232. Specifically, by rotating the locking nut 240, the second angular contact ball bearing 232 can be locked to prevent the bearing kit 230 from axially deviating when the connecting portion 212 rotates, so that the wheel portion 211 rotates more stably, thereby improving the feeding accuracy of the ACF.

[0049] refer to Figure 3 and Figure 4As shown, the connecting portion 212 includes a first section 2121 for connecting the coupling 223, a second section 2122 for connecting the locking nut 240, a third section 2123 for connecting the bearing set 230, and a fourth section 2124 for connecting the wheel portion 211. The fourth section 2124 is arranged protruding from the bearing seat 250. The diameter of the fourth section 2124 is greater than the diameter of the third section 2123. The diameter of the third section 2123 is greater than the diameter of the second section 2122. The diameter of the second section 2122 is greater than the diameter of the first section 2121. The second section 2122 is provided with a thread that is threadedly matched with the locking nut 240. Rotating the locking nut 240 can make the inner ring of the first angular contact ball bearing 231 press against the fourth section 2124. Specifically, the first section 2121 is plug-connected with the coupling 223, the second section 2122 is provided with a thread, and the third section 2123 and the bearing set 230 are matched with tolerance. During installation, firstly, the first angular contact ball bearing 231 is sleeved onto the third section 2123, and the first angular contact ball bearing 231 is abutted against the fourth section 2124. Then, the sleeve 233 is sleeved onto the third section 2123, and the sleeve 233 is abutted against the first angular contact ball bearing 231. Then, the third section 2123 is passed through the mounting hole 252 of the bearing seat 250, and the first angular contact ball bearing 231 is clamped into the first hole section 2521. Then, the second angular contact ball bearing 232 is sleeved onto the third section 2123, and the second angular contact ball bearing 232 is clamped into the third hole section 2523. Finally, the locking nut 240 is rotated to make the locking nut 240 press against the second angular contact ball bearing 232 so that the first angular contact ball bearing 231 presses against the fourth section 2124. After completing the installation of the bearing kit 230, align the first section 2121 with the coupling 223, align the four reverse threaded holes on the bearing seat 250 with the four positive threaded holes on the fixing block 221, and then respectively abut the two ends of the adjusting rod 222 against the positive threaded hole and the reverse threaded hole, then rotate the adjusting rod 222, and press the bearing seat 250, so that the two ends of the adjusting rod 222 are respectively threadedly connected to the positive threaded hole and the reverse threaded hole, and at the same time, the first section 2121 can be clamped into the coupling 223. Finally, according to the actual situation, the coaxiality of the connecting part 212 and the motor output shaft is adjusted by rotating the adjusting rod 222, thereby improving the transmission efficiency of the servo motor 220.

[0050] Preferably, at least one group of mutually parallel rotating surfaces 2125 are provided on the outer wall of the fourth section 2124. As shown in the figure, one group of rotating surfaces 2125 is provided. On the one hand, it is convenient to use a wrench to rotate the connecting part 212 when installing the locking nut 240 to enhance the connection strength. On the other hand, after the above-mentioned installation is completed, a wrench can be used to further connect the first section 2121 to the coupling 223 to enhance the connection.

[0051] In this embodiment, the outer wall of the wheel portion 211 is provided with laser-cut straight lines 2111 for contacting the ACF. Specifically, compared with the conventional lathe knurling straight line processing technology on the wheel portion 211, the laser-cut straight line 2111 processing technology is adopted to ensure the uniformity of the straight line spacing and depth, and avoid the extrusion deformation of the wheel portion 211 caused by the lathe knurling processing technology to affect the cylindricity and coaxiality of the feed wheel 210, thereby improving the feeding accuracy of the ACF.

[0052] Combination Figure 1 and Figure 5 As shown, the ACF pressing mechanism 300 includes a pressing wheel 320 for pressing the ACF against the wheel portion 211 and a cylinder 310 for driving the pressing wheel 320 to approach or move away from the wheel portion 211. A mounting block 330 is provided on the telescopic shaft of the cylinder 310. The pressing wheel 320 is rotatably supported on the mounting block 330. A buffer sleeve is sleeved on the pressing wheel 320. Specifically, the cylinder 310 is located directly above the feed wheel 210. The telescopic shaft of the cylinder 310 moves in the up-down direction, thereby pushing the mounting block 330 to move up-down. The mounting block 330 is L-shaped. A bracket 331 for mounting the pressing wheel 320 is fixed at the bottom of the mounting block 330. The pressing wheel 320 is rotatably connected to the bracket 331. When the ACF passes through the wheel 211, the air cylinder 310 is ventilated, so that the pressing wheel 320 moves downward and presses the wheel 211, and the ACF is clamped between the wheel 211 and the pressing wheel 320. The servo motor 220 drives the wheel 211 to rotate, and the wheel 211 can drive the ACF to move for feeding. In this embodiment, the buffer sleeve is a rubber sleeve, which can prevent the pressing wheel 320 from crushing the ACF when pressing the feeding wheel 210 downward.

[0053] Preferably, the CCD vision correction mechanism 400 includes multiple industrial cameras. The CCD vision correction mechanism 400 here can be purchased from the market. The X-direction and Y-direction positions of the ACF are detected by the industrial cameras to facilitate subsequent adjustments.

[0054] In summary:

[0055] During specific operation, the ACF is placed on the wheel 211, and the cylinder 310 drives the pressing wheel 320 to approach the wheel 211, so that the ACF is clamped between the wheel 211 and the pressing wheel 320, and the servo motor 220 drives the wheel 211 to rotate, and the wheel 211 can drive the ACF to move for feeding. Finally, before the ACF enters the attachment area, it is subjected to secondary inspection and adjustment by the CCD visual correction mechanism 400, thereby improving the feeding accuracy of the ACF and greatly improving the attachment accuracy of the ACF.

[0056] All technical features in this embodiment can be freely combined according to actual needs.

[0057] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. An ACF high-precision feeding mechanism, characterized in that: include: A feeding wheel, comprising an integrally arranged wheel portion and a connecting portion arranged at the center of the wheel portion, wherein the wheel portion is used to contact the ACF and drive the ACF to move; A driving member, comprising a servo motor, wherein an output shaft of the servo motor is connected to the connecting portion via a coupling; A connecting assembly, comprising a bearing seat arranged on the servo motor and a bearing kit arranged on the bearing seat, wherein the bearing kit is rotatably connected to the connecting portion; The servo motor is also provided with an adjustment component for adjusting the position of the bearing seat, the adjustment component includes a fixed block fixed to one end of the servo motor close to the output shaft and a plurality of adjustment rods, the fixed block is provided with a notch for the output shaft of the servo motor to pass through, the two ends of the adjustment rod are respectively provided with positive threads and negative threads, and the two ends of the adjustment rod are respectively threadedly connected with the fixed block and the bearing seat, and the plurality of adjustment rods are circumferentially distributed around the output shaft of the servo motor; The bearing kit comprises a first angular contact ball bearing, a second angular contact ball bearing and a sleeve, wherein the sleeve is sleeved on the connecting portion and two ends of the sleeve are stepped to respectively clamp one side of the inner ring of the first angular contact ball bearing and one side of the inner ring of the second angular contact ball bearing, the outer ring of the first angular contact ball bearing and the outer ring of the second angular contact ball bearing are respectively fixed on the bearing seat, and the inner ring of the first angular contact ball bearing and the inner ring of the second angular contact ball bearing are respectively sleeved on the connecting portion; The bearing seat comprises a mounting hole for mounting a shaft sleeve, the mounting hole comprises a first hole segment, a second hole segment and a third hole segment in sequence, the third hole segment is close to the servo motor, the first hole segment and the third hole segment are respectively matched with the outer ring of the first angular contact ball bearing and the outer ring of the second angular contact ball bearing in tolerance, and the diameter of the second hole segment is larger than the diameter of the shaft sleeve; The connecting portion is threadedly connected with a locking nut for reinforcing the bearing kit, and the locking nut is located between the coupling and the second angular contact ball bearing; The connecting portion includes a first section for connecting a coupling, a second section for connecting a locking nut, a third section for connecting a bearing kit and a fourth section for connecting a wheel portion. The fourth section is protruding from the bearing seat. The diameter of the fourth section is larger than the diameter of the third section. The diameter of the third section is larger than the diameter of the second section. The diameter of the second section is larger than the diameter of the first section. The second section is provided with a thread that cooperates with the thread of the locking nut. Rotating the locking nut can make the inner ring of the first angular contact ball bearing press against the fourth section.

2. The ACF high-precision feeding mechanism according to claim 1, characterized in that: At least one set of mutually parallel rotating surfaces is arranged on the outer wall of the fourth section.

3. An ACF high-precision feeding mechanism according to any one of claims 1 to 2, characterized in that: The outer wall of the wheel portion is provided with laser cut straight lines for contacting the ACF.

4. An ACF high-precision feeding system, comprising a frame, characterized in that: The rack is provided with: An ACF high-precision feeding mechanism according to any one of claims 1 to 3; ACF pressing mechanism, used to press the ACF against the ACF high-precision feeding mechanism; The CCD visual correction mechanism is used to detect and adjust the position of the ACF delivered by the ACF high-precision feeding mechanism.

5. The ACF high-precision feeding system according to claim 4, characterized in that: The ACF pressing mechanism includes a pressing wheel for pressing the ACF against the wheel portion and a cylinder for driving the pressing wheel to move closer to or away from the wheel portion. A mounting block is provided on the telescopic shaft of the cylinder. The pressing wheel is rotatably supported on the mounting block. A buffer sleeve is provided on the pressing wheel.

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