ACF attaching and pressing device

Abstract

The invention relates to the technical field of attaching machines, in particular to an ACF attaching and pressing device which comprises a rack and a pressing platform, a pressing head assembly is installed above the pressing platform, and a material belt winding and unwinding assembly and a cutting mechanism are installed on one side of the pressing head assembly; the pressing platform is used for placing a to-be-pressed panel, an adsorption mechanism is arranged on the pressing platform, and an ACF is pressed on the panel through a pressing head assembly; the pressing head assembly comprises a pressing head body and an elastic buffer layer, the top of the pressing head body is connected with a downward pressing air cylinder, a mounting groove is formed in the bottom of the pressing head body and adopts an embedded groove body, and an unwinding device and a winding device are mounted on the pressing head assembly; the heating mechanism is installed on the pressure head assembly and adopts a non-contact heating mode, and heating ports are located in the two sides of the pressure head assembly. The material belt winding and unwinding assembly comprises an unwinding part and a winding part, the unwinding part unwinds the ACF attached to the panel, the winding part winds the carrier tape, and the cutting mechanism is installed at the end close to the material belt winding and unwinding assembly. According to the invention, the pressing and attaching precision and efficiency of the ACF are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of attaching machines, and in particular to an ACF attaching and pressing device. Background Art

[0002] With the development of communication technology and electronic product technology, the application of ACF (Anisotropic Conductive Film) is becoming more and more widespread. The production of mobile phones, home appliances, and vehicle-mounted equipment cannot be separated from the application of ACF bonding and lamination. In the bonding unit of the LCD and OLED panel industry, silicone rubber cushioning is required when the press knife is pressed down to reduce the risk of ACF damage and fragmentation caused by direct contact between the press knife and the cell. The traditional silicone rubber hook installation method sets the hooks for hanging silicone rubber on both sides of the press knife seat, which has the problem of high frequency of damage, easy wear and tear, and needs to be regularly made and replaced. Another way of attaching Teflon tape is to attach Teflon tape to the surface of the ACF press knife, which uses hard-to-hard contact, and the frequency of poor ACF attachment will increase.

[0003] In the prior art, a silicone rubber buffer belt is often designed on the blade of the ACF press knife. Chinese patent CN108227254A discloses an ACF attaching and pressing device and an attaching device, which relates to the field of attaching technology and can solve the problem of poor attachment caused by the easy movement of the buffer belt at the front end of the blade relative to the blade when the ACF pressing device in the prior art presses and attaches the ACF. However, when the buffer belt is replaced after long-term use, the machine needs to be stopped to remove the buffer belt or replace the entire press knife, which is troublesome to operate and affects the efficiency of ACF attaching and pressing. Summary of the invention

[0004] In order to overcome the problems existing in the prior art, the present application provides an ACF attaching and pressing device.

[0005] The ACF attaching and pressing device provided in this application adopts the following technical solution:

[0006] An ACF attaching and pressing device comprises a frame and a pressing platform mounted on the frame, a pressing head assembly is mounted above the pressing platform, a material strip receiving and releasing assembly is mounted on one side of the pressing head assembly, and a cutting mechanism is also mounted on one side of the material strip receiving and releasing assembly;

[0007] The pressing platform is used to place the panel to be pressed, wherein a suction mechanism for sucking the panel is installed on the pressing platform, and the ACF is pressed on the panel through a pressing head assembly;

[0008] The pressure head assembly includes a pressure head body and an elastic buffer layer, wherein the elastic buffer layer is located between the pressure head body and the panel, the top of the pressure head body is connected to the downward pressure cylinder, and the pressure head end at the bottom of the pressure head body is provided with an installation groove for installing the elastic buffer layer, wherein the installation groove adopts an inlaid groove body, and an unwinding device and a winding device for winding and unwinding the elastic buffer layer are installed on the pressure head assembly;

[0009] A heating mechanism, the heating mechanism is installed on the pressure head assembly, wherein the heating mechanism adopts a non-contact heating method, and the heating ports of the heating mechanism are located on both sides of the pressure head assembly;

[0010] The material tape unwinding and rewinding assembly includes an unwinding portion and a rewinding portion respectively located on the sides of the pressure head assembly, wherein the unwinding portion unwinds the ACF attached to the panel, and the rewinding portion rewinds the carrier tape for placing the ACF, and the cutting mechanism is installed at one end of the pressure head assembly close to the material tape unwinding and rewinding assembly.

[0011] By adopting the above technical solution, the panel to be laminated with ACF is placed on the laminating platform installed on the frame, and the adsorption mechanism of the laminating platform adsorbs the panel to fix the panel on the laminating platform, and the ACF is heated by a non-contact heating mechanism on both sides of the press head assembly, and the ACF is laminated on the panel through the press head body with an elastic buffer layer. The material tape reeling and unwinding assembly installed on one side of the press head assembly is used to unwind the ACF and rewind the carrier tape for carrying the ACF, and after unwinding a section of the ACF to be attached and laminated, the ACF on the carrier tape can be cut by the cutting mechanism, so that the next section of ACF can be attached and laminated on the panel. The press head assembly is installed on the frame, and is driven to rise and fall on the frame by the downward pressure cylinder on its top, thereby driving the ACF released from the material tape reeling and unwinding assembly to be attached and laminated on the panel. An installation groove is provided at the pressure head end of the pressure head body in the pressure head assembly to accommodate the elastic buffer layer. The installation groove adopts an inlaid groove body to enable the elastic buffer layer matching therewith to be stably embedded in the installation groove, and an unwinding device and a winding device for unwinding and winding the elastic buffer layer are provided on the pressure head assembly. The elastic buffer layer can be automatically replaced after long-term use, and the replacement process does not require disassembling the pressure head assembly to achieve replacement of the elastic buffer layer.

[0012] Preferably, arc-shaped transitions are provided on both sides of the mounting groove at the bottom of the pressure head body, and a locking rod for locking the elastic buffer layer is installed on the bottom surface of the mounting groove. The locking rod is driven by a locking cylinder in the pressure head body to lock with a locking hole on the back of the elastic buffer layer.

[0013] By adopting the above-mentioned technical scheme, the arc-shaped transitions opened on both sides of the bottom mounting groove of the pressing head body can facilitate the movement of the elastic buffer layer on the mounting groove, facilitate the elastic buffer layer unwound by the unwinding device to enter the mounting groove, and facilitate the elastic buffer layer that needs to be replaced after use to enter the winding device for winding, and after the elastic buffer layer moves to the corresponding position in the mounting groove, the locking cylinder in the pressing head body drives the locking rod to cooperate with the locking hole on the back of the elastic buffer layer to lock, thereby avoiding the movement of the elastic buffer layer during the ACF pressing and affecting the pressing effect.

[0014] Preferably, the non-contact heating method is far-infrared heating, wherein the heating device comprises heating covers arranged on both sides of the press head assembly, infrared ray emitters are arranged in the heating covers, and the heating ports of the heating covers face the bottom of the press head assembly.

[0015] By adopting the above technical solution, far-infrared heating can be used to emit far-infrared rays from both sides of the pressing assembly through the far-infrared emitter and introduce them into the heating port through the heating cover, so as to heat the ACF at the bottom of the pressing head assembly facing the heating port, thereby achieving heating and pressing of the ACF.

[0016] Preferably, the adsorption mechanism includes a plurality of adsorption holes located on the surface of the pressing platform and a vacuum pump connected to the adsorption holes through pipelines inside the pressing platform.

[0017] By adopting the above technical solution, the adsorption mechanism acts on the adsorption holes on the surface of the pressing platform through the pipeline under the action of the vacuum pump, and adsorbs and fixes the panel placed on the pressing platform.

[0018] Preferably, a cleaning mechanism is also installed on the surface of the pressing platform, including adsorption grooves annularly distributed around the pressing platform and a purge mechanism slidably installed on the pressing platform, wherein the opening of the adsorption grooves faces the center of the pressing platform, and a dust collecting box with a negative pressure pump is connected to the bottom of the adsorption grooves, and the purge mechanism includes a purge rod with the same length as the pressing platform, and air outlets are evenly distributed on the bottom of the purge rod, and the bottom of the purge rod is connected by a support rod and a lifting rod, wherein the lifting rod can drive the purge rod to rise from the accommodating groove where the purge mechanism is placed on the pressing platform, and a slider for fixing the support rod and the lifting rod is slidably installed in the accommodating groove.

[0019] By adopting the above technical solution, the purge mechanism in the cleaning mechanism pushes the purge rod out of the receiving groove through the lifting rod connected to the bottom of the purge rod, and supports it with another supporting rod connected to the bottom of the purge rod, and the bottom of the lifting rod and the bottom of the supporting rod are both rotated on the slider, and the slider is driven to move by the driving mechanism located in the receiving groove, so that the purge rod is used to purge the impurities left on the surface along the pressing platform, and adsorbs them into the dust collection box through the adsorption grooves opened around the pressing platform under the action of the negative pressure pump. The driving mechanism can be driven by a screw or a cylinder, and the ACF is generally attached to the panel in a clean room or a clean workshop. The cleaning mechanism performs further cleaning on this basis, which can effectively improve the yield rate of panel processing.

[0020] Preferably, the installation groove opened at the bottom of the pressing head assembly consists of a first groove body and a plurality of second groove bodies with different depths located at the bottom surface of the first groove body, wherein the second groove body is located at the center of the pressing head assembly and has a depth greater than the depths on both sides.

[0021] By adopting the above-mentioned technical scheme, the installation groove at the bottom of the pressing head assembly accommodates the main body of the elastic buffer layer through the first groove body, and the second groove body located at the bottom of the first groove body is cooperated and connected with the protrusion on the back side of the elastic buffer layer. The depth of the second groove body located at the center of the pressing head assembly is greater than the depth of the second groove bodies on both sides thereof, so that the elastic buffer layer can be stably embedded in the installation groove to avoid the displacement of the elastic buffer layer in the width direction of the installation groove.

[0022] Preferably, a limiting groove adapted to the ACF is provided on the contact surface between the elastic buffer layer and the ACF, and the inner side of the limiting groove is coated with a low surface energy coating.

[0023] Preferably, the low surface energy coating is a polytetrafluoroethylene coating.

[0024] By adopting the above technical scheme, the limiting groove opened on the contact surface between the elastic buffer layer and the ACF can limit the ACF in its width direction, avoid its deformation in the width direction after being subjected to the pressure of the pressure head assembly, ensure the attachment accuracy of the ACF, avoid setting a low surface energy coating of the polytetrafluoroethylene coating on the inner side of the limiting groove, and form a smooth and durable protective layer in the limiting groove, thereby effectively preventing the ACF from adhering to the pressure head assembly.

[0025] Preferably, the elastic buffer layer is embedded in the installation groove, and both sides of the buffer layer wound by the unwinding device are respectively provided with shaping strips that cooperate with the second groove body on one side of the elastic buffer layer and the limiting groove on the other side, and reels for winding the shaping strips are provided on both sides of the unwinding device.

[0026] By adopting the above technical solution, the elastic buffer layer wound in the unwinding device has protrusions and limiting grooves on both sides, and the shaping strips are used to cooperate with it so that the elastic buffer layer is not easily deformed when it is in a wound state. The reels provided on both sides of the unwinding device can rewind the shaping strips on both sides thereof during the process of unwinding the elastic buffer layer.

[0027] Preferably, the unwinding section and the winding section in the material tape unwinding and winding assembly are both located on one side of the pressure head body, wherein the cutting mechanism is located between the unwinding section and the winding section, the unwinding section includes an unwinding roller and a guide roller, wherein the unwinding roller unwinds the ACF with a carrier tape, the guide roller is wound with the carrier tape, and the guide roller guides the carrier tape to the winding section, the guide roller is driven by a cylinder to move along the length direction of the pressure head body, and a displacement sensor is installed at one end of the cylinder facing the guide roller, wherein the displacement sensor is used to sense the distance moved by the guide roller driven by the cylinder, the cutting mechanism is installed at one end of the pressure head body close to the material tape unwinding and winding assembly, and includes a cutting bracket and a pneumatic cutting knife installed on the cutting bracket, the pneumatic cutting knife includes a cylinder and a knife body at the output end of the cylinder, wherein the knife body is close to one side of the ACF.

[0028] By adopting the above technical solution, the unwinding part in the material strip unwinding and winding assembly unwinds the ACF through the unwinding roller, and the guide roller is driven by the telescopic rod at the output end of the cylinder to transport the ACF along the length direction of the installation groove at the bottom of the pressure head body to fill the limiting groove at the bottom of the entire elastic buffer layer. After the displacement sensor detects that the guide roller has reached the position, the cutting mechanism cuts off the ACF on the carrier tape, and drives the guide roller to reset to the side close to the unwinding roller. A tensioning structure is arranged on the winding roller to stably collect the carrier tape on the basis of cooperating with the movement of the guide roller.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. In the present application, an unwinding device and a rewinding device for rewinding and unwinding the elastic buffer layer are arranged on the pressure head assembly, so that the elastic buffer layer can be automatically replaced after long-term use. The replacement process does not require the removal of the pressure head assembly to achieve the replacement of the elastic buffer layer, which greatly improves the lamination efficiency of the ACF;

[0031] 2. The present application uses the first slot body at the bottom of the pressure head assembly and the second slot body at the bottom thereof to cooperate with the protrusion on the back of the elastic buffer layer, so that the elastic buffer layer can be stably embedded in the installation slot to avoid the elastic buffer layer from being offset in the width direction of the installation slot. After the elastic buffer layer moves to the corresponding position in the installation slot, the locking cylinder in the pressure head body drives the locking rod to cooperate with the locking hole on the back of the elastic buffer layer to lock, thereby avoiding the elastic buffer layer from moving along the length of the installation slot when pressing the ACF to affect the pressing effect.

[0032] 3. The present application sets up a material tape unwinding and rewinding assembly for unwinding ACF and rewinding a carrier tape for carrying ACF, and after unwinding a section of ACF to be attached and pressed, the ACF on the carrier tape can be cut by a cutting mechanism, thereby realizing automatic loading and attaching of ACF, greatly improving the degree of automation of the attaching and pressing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of an ACF attaching and pressing device;

[0034] Figure 2 It is a front view of an ACF attaching and pressing device;

[0035] Figure 3 yes Figure 2 Middle AA section;

[0036] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0037] Figure 5 yes Figure 3 Enlarged view of point B in the middle;

[0038] Figure 6 The present invention is a schematic diagram of the structure of an ACF attaching and pressing device without a frame and a back side of a pressing head body.

[0039] Description of the reference numerals: 1. frame; 2. pressing platform; 21. panel; 22. ACF; 23. cleaning mechanism; 231. adsorption tank; 2311. dust collecting box; 2312. negative pressure pump; 232. purge mechanism; 2321. purge rod; 2322. support rod; 2323. lifting rod; 2324. slider; 2325. receiving tank; 3. pressure head assembly; 31. pressure head body; 311. mounting groove; 3111. first tank body; 3112. second tank body; 312. arc transition; 313. locking rod; 314. locking cylinder; 32. elastic buffer layer; 321. limiting groove; 322. low Surface energy coating; 323, locking hole; 33, downward pressure cylinder; 34, unwinding device; 341, shaping strip; 342, reel; 35, winding device; 36, heating mechanism; 361, heating cover; 362, infrared ray emitter; 37, heating port; 4, material tape unwinding and taking-up assembly; 41, unwinding section; 411, unwinding roller; 412, guide roller; 413, cylinder; 414, displacement sensor; 42, winding section; 43, carrier tape; 5, cutting mechanism; 51, cutting bracket; 52, pneumatic cutting knife; 521, cutting cylinder; 522, knife body; 6, adsorption mechanism; 61, adsorption hole; 62, vacuum pump. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6This application is described in further detail.

[0041] The embodiment of the present application discloses an ACF attaching and pressing device.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, an ACF attaching and pressing device, comprising a frame 1 and a pressing platform 2 installed on the frame 1, a pressing head assembly 3 is installed above the pressing platform 2, a material strip receiving and releasing assembly 4 is installed on one side of the pressing head assembly 3, and a cutting mechanism 5 is also installed on one side of the material strip receiving and releasing assembly 4; the pressing platform 2, the pressing platform 2 is used to place a panel 21 to be pressed, wherein an adsorption mechanism 6 for adsorbing the panel 21 is installed on the pressing platform 2, and an ACF 22 is pressed on the panel 21 through the pressing head assembly 3; the pressing head assembly 3, the pressing head assembly 3 includes a pressing head body 31 and an elastic buffer layer 32, wherein the elastic buffer layer 32 is located between the pressing head body 31 and the panel 21, the top of the pressing head body 31 is connected to a downward pressing cylinder 33, and the pressing head end of the bottom of the pressing head body 31 is provided with a An installation groove 311 of the elastic buffer layer 32, wherein the installation groove 311 adopts an inlaid groove body, and a reeling device 34 and a reeling device 35 for reeling and unreeling the elastic buffer layer 32 are installed on the press head assembly 3; a heating mechanism 36, the heating mechanism 36 is installed on the press head assembly 3, wherein the heating mechanism 36 adopts a non-contact heating method, and the heating port 37 of the heating mechanism 36 is located on both sides of the press head assembly 3; a material tape reeling and unreeling assembly 4, the material tape reeling and unreeling assembly 4 includes an unreeling portion 41 and a reeling portion 42 respectively located on the side of the press head assembly 3, wherein the unreeling portion 41 unreels the ACF22 attached to the panel 21, and the reeling portion 42 reels the carrier tape 43 for placing the ACF22, and the cutting mechanism 5 is installed on the press head assembly 3 at one end close to the material tape reeling and unreeling assembly 4. The panel 21 to be pressed with ACF22 is placed on the pressing platform 2 installed on the frame 1, and the adsorption mechanism 6 of the pressing platform 2 adsorbs the panel 21, fixes the panel 21 on the pressing platform 2, and heats the ACF22 by non-contact heating mechanisms 36 on both sides of the pressing head assembly 3, and presses the ACF22 on the panel 21 through the pressing head body 31 with an elastic buffer layer 32. The material tape reeling and unreeling assembly 4 installed on one side of the pressing head assembly 3 is used to unwind the ACF22 and rewind the carrier tape 43 for carrying the ACF22, and after unwinding a section of the ACF22 to be attached and pressed, the ACF22 on the carrier tape 43 can be cut by the cutting mechanism 5, so that the next section of the ACF22 can be attached and pressed on the panel 21. The pressing head assembly 3 is installed on the frame 1, and is driven to rise and fall on the frame 1 by the downward pressure cylinder 33 on its top, thereby driving the ACF22 released from the material tape reeling and unreeling assembly 4 to be attached and pressed on the panel 21. An installation groove 311 is provided at the pressure head end of the pressure head body 31 in the pressure head assembly 3 to accommodate the elastic buffer layer 32. The embedded groove body adopted in the installation groove 311 can allow the elastic buffer layer 32 matched therewith to be stably embedded in the installation groove 311, and an unwinding device 34 and a winding device 35 for unwinding and winding the elastic buffer layer 32 are arranged on the pressure head assembly 3. The elastic buffer layer 32 can be automatically replaced after being used for a long time. The replacement process does not require disassembling the pressure head assembly 3 to realize the replacement of the elastic buffer layer 32.

[0043] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 , arc-shaped transitions 312 are provided on both sides of the mounting groove 311 at the bottom of the ram body 31, and a locking rod 313 for locking the elastic buffer layer 32 is installed on the bottom surface of the mounting groove 311, and the locking rod 313 is driven by the locking cylinder 314 in the ram body 31 to lock with the locking hole 323 on the back of the elastic buffer layer 32. The arc-shaped transitions 312 provided on both sides of the mounting groove 311 at the bottom of the ram body 31 can facilitate the elastic buffer layer 32 to move on the mounting groove 311, facilitate the elastic buffer layer 32 unwound by the unwinding device 34 to enter the mounting groove 311, and facilitate the elastic buffer layer 32 that needs to be replaced after use to enter the winding device 35 for winding, and after the elastic buffer layer 32 moves to the corresponding position in the mounting groove 311, the locking cylinder 314 in the ram body 31 drives the locking rod 313 to cooperate and lock with the locking hole 323 on the back of the elastic buffer layer 32, thereby preventing the elastic buffer layer 32 from moving when pressing the ACF22 and affecting the pressing effect.

[0044] Reference Figure 1 , Figure 2 and Figure 3 The non-contact heating method is far-infrared heating, wherein the heating device includes heating covers 361 arranged on both sides of the pressing head assembly 3, and infrared ray emitters 362 are arranged in the heating covers 361, and the heating port 37 of the heating covers 361 faces the bottom of the pressing head assembly 3. The far-infrared heating method can emit far-infrared rays from both sides of the pressing assembly through the far-infrared emitters, and pass through the heating covers 361 and are introduced from the heating port 37 to heat the ACF22 at the bottom of the pressing head assembly 3 facing the heating port 37, thereby achieving heating and pressing of the ACF22.

[0045] Reference Figure 1 and Figure 4 The adsorption mechanism 6 includes a plurality of adsorption holes 61 on the surface of the laminating platform 2 and a vacuum pump 62 connected to the adsorption holes 61 through pipes inside the laminating platform 2. Under the action of the vacuum pump 62, the adsorption mechanism 6 acts on the adsorption holes 61 on the surface of the laminating platform 2 through pipes to adsorb and fix the panel 21 placed on the laminating platform 2.

[0046] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A cleaning mechanism 23 is also installed on the surface of the pressing platform 2, including adsorption grooves 231 annularly distributed around the pressing platform 2 and a purge mechanism 232 slidably installed on the pressing platform 2, wherein the opening of the adsorption groove 231 faces the center of the pressing platform 2, and the bottom of the adsorption groove 231 is connected to a dust collecting box 2311 with a negative pressure pump 2312, and the purge mechanism 232 includes a purge rod 2321 with the same length as the pressing platform 2, and the bottom of the purge rod 2321 is evenly distributed with air outlets, and the bottom of the purge rod 2321 is connected by a support rod 2322 and a lifting rod 2323, wherein the lifting rod 2323 can drive the purge rod 2321 to rise from the accommodating groove 2325 on the pressing platform 2 where the purge mechanism 232 is placed, and a slider 2324 for fixing the support rod 2322 and the lifting rod 2323 is slidably installed in the accommodating groove 2325. The purge mechanism 232 in the cleaning mechanism 23 pushes the purge rod 2321 out of the receiving groove 2325 through the lifting rod 2323 connected to the bottom of the purge rod 2321, and supports it with another supporting rod 2322 connected to the bottom of the purge rod 2321, and the bottom of the lifting rod 2323 and the bottom of the supporting rod 2322 are both rotated on the slider 2324, and the slider 2324 is driven to move by the driving mechanism located in the receiving groove 2325, so that the purge rod 2321 is blown along the pressing platform 2 to sweep the impurities left on the surface, and adsorbed into the dust box 2311 by the adsorption groove 231 opened around the pressing platform 2 under the action of the negative pressure pump 2312. The driving mechanism can be driven by a screw or a cylinder 413, and the ACF22 is generally attached to the panel 21 in a clean room or a clean workshop. The cleaning mechanism 23 performs further cleaning on this basis, which can effectively improve the yield rate of the panel 21.

[0047] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The installation groove 311 opened at the bottom of the press head assembly 3 consists of a first groove body 3111 and a plurality of second groove bodies 3112 with different depths located at the bottom of the first groove body 3111, wherein the second groove body 3112 is located at the center of the press head assembly 3 and has a depth greater than the depths on both sides. The installation groove 311 at the bottom of the press head assembly 3 accommodates the main body of the elastic buffer layer 32 through the first groove body 3111, and the second groove body 3112 located at the bottom of the first groove body 3111 is matched and connected with the protrusion on the back of the elastic buffer layer 32, and the depth of the second groove body 3112 located at the center of the press head assembly 3 is greater than the depth of the second groove bodies 3112 on both sides thereof, so that the elastic buffer layer 32 can be stably embedded in the installation groove 311, and the elastic buffer layer 32 can be prevented from being offset in the width direction of the installation groove 311.

[0048] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A limiting groove 321 adapted to ACF22 is provided on the contact surface between the elastic buffer layer 32 and ACF22, and the inner side of the limiting groove 321 is coated with a low surface energy coating 322. The low surface energy coating 322 is made of polytetrafluoroethylene coating. The limiting groove 321 provided on the contact surface between the elastic buffer layer 32 and ACF22 can limit the ACF22 in its width direction, avoid its deformation in the width direction after being subjected to the pressure of the pressure head assembly 3, ensure the attachment accuracy of ACF22, avoid setting the low surface energy coating 322 with polytetrafluoroethylene coating on the inner side of the limiting groove 321, and can form a smooth and durable protective layer in the limiting groove 321, effectively preventing ACF22 from adhering to the pressure head assembly 3.

[0049] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The elastic buffer layer 32 is embedded in the installation groove 311, and the two sides of the buffer layer wound by the unwinding device 34 are respectively provided with shaping strips 341 that cooperate with the second groove body 3112 on one side of the elastic buffer layer 32 and the limiting groove 321 on the other side, and the two sides of the unwinding device 34 are provided with reels 342 for rewinding the shaping strips 341. The elastic buffer layer 32 wound in the unwinding device 34 has protrusions and limiting grooves 321 on both sides, and the shaping strips 341 are used to cooperate with them so that the elastic buffer layer 32 is not easily deformed when it is wound. The reels 342 provided on both sides of the unwinding device 34 can rewind the shaping strips 341 on both sides during the process of unwinding the elastic buffer layer 32.

[0050] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5The unwinding part 41 and the rewinding part 42 in the material tape rewinding and unwinding assembly are both located on one side of the pressure head body 31, wherein the cutting mechanism 5 is located between the unwinding part 41 and the rewinding part 42, the unwinding part 41 includes an unwinding roller 411 and a guide roller 412, wherein the unwinding roller 411 unwinds the ACF22 with the carrier tape 43, the guide roller 412 is wound with the carrier tape 43, and the guide roller 412 guides the carrier tape 43 to the rewinding part 42, and the guide roller 412 is driven by the cylinder 413 to move along the length direction of the pressure head body 31 , and a displacement sensor is installed at one end of the cylinder 413 facing the guide roller 412, wherein the displacement sensor 414 is used to sense the distance that the cylinder 413 drives the guide roller 412 to move, and the cutting mechanism 5 is installed at one end of the pressure head body 31 close to the material strip winding and unwinding assembly, including a cutting bracket 51 and a pneumatic cutting knife 52 installed on the cutting bracket 51, and the pneumatic cutting knife 52 includes a cutting cylinder 521 and a knife body 522 at the output end of the cylinder 413, wherein the knife body 522 is close to the side of the ACF22. The unwinding part 41 in the material tape unwinding and rewinding assembly unwinds the ACF22 through the unwinding roller 411, and the guide roller 412 is driven by the telescopic rod at the output end of the cylinder 413 to transport the ACF22 along the length direction of the mounting groove 311 at the bottom of the pressure head body 31 to fill the entire limiting groove 321 at the bottom of the elastic buffer layer 32. After the displacement sensor detects that the guide roller 412 has reached the position, the cutting mechanism 5 cuts off the ACF22 on the carrier tape 43, and drives the guide roller 412 to reset to the side close to the unwinding roller 411. A tensioning structure is set on the winding roller to stably collect the carrier tape 43 on the basis of cooperating with the movement of the guide roller 412.

[0051] Working principle: The panel 21 to be pressed with ACF22 is placed on the pressing platform 2 installed on the frame 1, and the adsorption mechanism 6 of the pressing platform 2 adsorbs the panel 21, fixes the panel 21 on the pressing platform 2, and heats the ACF22 by non-contact heating mechanisms 36 on both sides of the pressing head assembly 3, and presses the ACF22 on the panel 21 through the pressing head body 31 with an elastic buffer layer 32. The material tape reeling and unreeling assembly 4 installed on one side of the pressing head assembly 3 is used to unwind the ACF22 and rewind the carrier tape 43 for carrying the ACF22, and after unwinding a section of the ACF22 to be attached and pressed, the ACF22 on the carrier tape 43 can be cut by the cutting mechanism 5, so that the next section of ACF22 can be attached and pressed on the panel 21. The pressing head assembly 3 is installed on the frame 1, and is driven to rise and fall on the frame 1 by the downward pressure cylinder 33 on its top, thereby driving the ACF22 released from the material tape reeling and unreeling assembly 4 to be attached and pressed on the panel 21. An installation groove 311 is provided at the pressure head end of the pressure head body 31 in the pressure head assembly 3 to accommodate the elastic buffer layer 32. The installation groove 311 adopts an inlaid groove body so that the elastic buffer layer 32 matched therewith can be stably embedded in the installation groove 311, and an unwinding device 34 and a winding device 35 for unwinding and winding the elastic buffer layer 32 are provided on the pressure head assembly 3, so that the elastic buffer layer 32 can be automatically replaced after long-term use.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ACF attaching and pressing device, characterized in that: It comprises a frame (1) and a pressing platform (2) mounted on the frame (1); a pressing head assembly (3) is mounted above the pressing platform (2); a material strip retracting and releasing assembly (4) is mounted on one side of the pressing head assembly (3); and a cutting mechanism (5) is also mounted on one side of the material strip retracting and releasing assembly (4); A pressing platform (2), the pressing platform (2) being used to place a panel (21) to be pressed, wherein a suction mechanism (6) for sucking the panel (21) is installed on the pressing platform (2), and an ACF (22) is pressed on the panel (21) via a pressing head assembly (3); A pressure head assembly (3), the pressure head assembly (3) comprising a pressure head body (31) and an elastic buffer layer (32), wherein the elastic buffer layer (32) is located between the pressure head body (31) and the panel (21), the top of the pressure head body (31) is connected to a downward pressure cylinder (33), and a pressure head end at the bottom of the pressure head body (31) is provided with a mounting groove (311) for mounting the elastic buffer layer (32), wherein the mounting groove (311) adopts an inlaid groove body, and an unwinding device (34) and a winding device (35) for winding and unwinding the elastic buffer layer (32) are installed on the pressure head assembly (3); A heating mechanism (36), wherein the heating mechanism (36) is installed on the pressure head assembly (3), wherein the heating mechanism (36) adopts a non-contact heating method, and the heating ports (37) of the heating mechanism (36) are located on both sides of the pressure head assembly (3); A material tape unwinding and rewinding assembly (4), the material tape unwinding and rewinding assembly (4) comprising an unwinding portion (41) and a rewinding portion (42) respectively located on the side of a pressure head assembly (3), wherein the unwinding portion (41) unwinds an ACF (22) attached to a panel (21), and the rewinding portion (42) rewinds a carrier tape (43) for placing the ACF (22), and the cutting mechanism (5) is installed at one end of the pressure head assembly (3) close to the material tape unwinding and rewinding assembly (4).

2. The ACF attaching and pressing device according to claim 1, characterized in that: Arc-shaped transitions (312) are provided on both sides of the mounting groove (311) at the bottom of the pressure head body (31), and a locking rod (313) for locking the elastic buffer layer (32) is installed on the bottom surface of the mounting groove (311), and the locking rod (313) is driven by a locking cylinder (314) in the pressure head body (31) to lock with a locking hole (323) on the back side of the elastic buffer layer (32).

3. The ACF attaching and pressing device according to claim 1, characterized in that: The non-contact heating method is far-infrared heating, wherein the heating device comprises heating covers (361) arranged on both sides of the pressing head assembly (3), an infrared ray emitter (362) is arranged in the heating cover (361), and the heating port (37) of the heating cover (361) faces the bottom of the pressing head assembly (3).

4. The ACF attaching and pressing device according to claim 1, characterized in that: The adsorption mechanism (6) comprises a plurality of adsorption holes (61) located on the surface of the pressing platform (2) and a vacuum pump (62) inside the pressing platform (2) connected to the adsorption holes (61) via pipelines.

5. The ACF attaching and pressing device according to claim 4, characterized in that: The surface of the pressing platform (2) is also provided with a cleaning mechanism (23), comprising adsorption grooves (231) annularly distributed around the pressing platform (2) and a purge mechanism (232) slidably mounted on the pressing platform (2), wherein the opening of the adsorption grooves (231) faces the center of the pressing platform (2), and a dust collecting box (2311) with a negative pressure pump (2312) is connected to the bottom of the adsorption grooves (231), and the purge mechanism (232) comprises a purge rod (231) having the same length as the pressing platform (2). 321), the bottom of the purge rod (2321) is evenly distributed with air outlets, and the bottom of the purge rod (2321) is connected via a support rod (2322) and a lifting rod (2323), wherein the lifting rod (2323) can drive the purge rod (2321) to rise from a receiving groove (2325) on the pressing platform (2) in which the purge mechanism (232) is placed, and a slider (2324) for fixing the support rod (2322) and the lifting rod (2323) is slidably installed in the receiving groove (2325).

6. The ACF attaching and pressing device according to claim 5, characterized in that: The mounting groove (311) opened at the bottom of the pressing head assembly (3) comprises a first groove body (3111) and a plurality of second groove bodies (3112) with different depths located at the bottom surface of the first groove body (3111), wherein the second groove body (3112) is located at the center of the pressing head assembly (3) and has a depth greater than the depths on both sides.

7. The ACF attaching and pressing device according to claim 6, characterized in that: A limiting groove (321) adapted to the ACF (22) is provided on the contact surface between the elastic buffer layer (32) and the ACF (22), and the inner side surface of the limiting groove (321) is coated with a low surface energy coating (322).

8. The ACF attaching and pressing device according to claim 7, characterized in that: The low surface energy coating (322) is a polytetrafluoroethylene coating.

9. The ACF attaching and pressing device according to claim 1, characterized in that: The elastic buffer layer (32) is embedded in the installation groove (311), and the buffer layer wound by the unwinding device (34) is provided with a shaping strip (341) on both sides thereof respectively, which cooperates with a second groove body (3112) on one side of the elastic buffer layer (32) and a limiting groove (321) on the other side thereof, and a reel (342) for winding up the shaping strip (341) is provided on both sides of the unwinding device (34).

10. The ACF attaching and pressing device according to claim 1, characterized in that: The unwinding section (41) and the rewinding section (42) in the material tape rewinding and unwinding assembly are both located on one side of the pressure head body (31), wherein the cutting mechanism (5) is located between the unwinding section (41) and the rewinding section (42), wherein the unwinding section (41) comprises an unwinding roller (411) and a guide roller (412), wherein the unwinding roller (411) unwinds the ACF (22) with the carrier tape (43), the guide roller (412) is wound with the carrier tape (43), and the guide roller (412) guides the carrier tape (43) to the rewinding section (42), and the guide roller (412) is driven by the cylinder (413) to roll along the length of the pressure head body (31) The pneumatic cylinder (413) is configured to move in a certain direction, and a displacement sensor is installed at one end of the cylinder (413) facing the guide roller (412), wherein the displacement sensor (414) is used to sense the distance that the cylinder (413) drives the guide roller (412) to move. The cutting mechanism (5) is installed at one end of the pressure head body (31) close to the material strip winding and unwinding assembly, and comprises a cutting bracket (51) and a pneumatic cutting knife (52) installed on the cutting bracket (51), wherein the pneumatic cutting knife (52) comprises a cutting cylinder (521) and a knife body (522) at the output end of the cylinder (413), wherein the knife body (522) is close to one side of the ACF (22).

Images