A transparent conductive film production line

Abstract

The present invention provides a transparent conductive film production line, which includes a melt extruder, a calender roller, a first guide roller, a cooling device, a third guide roller and a winding roller from upstream to downstream, and a conductive medium coating device is also arranged between the cooling device and the first guide roller, and a second guide roller is arranged between the conductive medium coating device and the cooling device. The production line of the present invention arranges the coating of the conductive medium before cooling and shaping, which simplifies the production process. After the film is extruded, the conductive medium is directly coated on its surface, and then the film is cooled and shaped, and there is no need to coat the UV adhesive layer; using this production line for production improves production efficiency and saves costs.

Description

Technical Field

[0001] The invention belongs to the field of plastic film forming equipment, and in particular relates to a transparent conductive film production line. Background Art

[0002] When producing traditional conductive films, the film is usually first extruded through a melt extruder, and then the extruded film is cooled and shaped before being rolled up, and then the rolled up film is unwound, thereby coating the surface of the film with a layer of conductive medium that can conduct electricity, such as nanosilver, etc.; then a layer of UV glue is coated on the outside of the conductive medium again to isolate the conductive medium from the air to ensure the normal performance of the conductive medium and prevent it from being oxidized and denatured; however, the traditional production line needs to roll up the film twice and unroll it once during the production process, the production process is complicated, many equipments are required, and the work efficiency is low. Summary of the invention

[0003] The problem to be solved by the present invention is to provide a transparent conductive film production line, which arranges the coating work of the conductive medium before cooling and shaping, thereby simplifying the production process. After the film is extruded, the conductive medium is directly coated on its surface, and then the film is cooled and shaped, and there is no need to coat a UV adhesive layer. Using this production line for production can improve production efficiency and save costs at the same time.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a transparent conductive film production line, which includes a melt extruder, a calender roller, a first guide roller, a cooling device, a third guide roller and a winding roller from upstream to downstream, and a conductive medium coating device is also arranged between the cooling device and the first guide roller, and a second guide roller is arranged between the conductive medium coating device and the cooling device.

[0005] In the present technical solution, after the film is extruded by the melt extruder, it enters the conductive medium coating device through the calendering roller and the first guide roller, so that the surface of the film is coated with a layer of conductive medium, so that the film has conductive properties; the film coated with the conductive medium is cooled and shaped along the second guide roller through the action of the cooling device, and the conductive medium is firmly plasticized on the surface of the film and isolated from the air; the finally cooled film passes through the third guide roller and is wound up and stored by the winding roller.

[0006] Furthermore, the conductive medium coating device includes a dielectric solution storage tank, a rotating roller is arranged on the upper side of the dielectric solution storage tank, and the rotating roller is fixedly supported on the upper side of the dielectric solution storage tank by a supporting device; the dielectric solution storage tank contains a conductive dielectric solution, and the bottom roller surface of the rotating roller is located in the conductive dielectric solution; a covering plate is arranged on the upper side of the rotating roller, a through hole is opened in the middle of the covering plate, the rotating roller passes through the covering plate, and its top roller surface is located on the upper side of the covering plate; fixed columns are fixedly arranged at the four corners of the bottom of the covering plate, and rotating shafts are fixedly arranged on both sides of the rotating roller, one of the rotating shafts is fixedly connected to a driven pulley, and a servo motor is also arranged on the covering plate, and the output shaft of the servo motor is fixedly connected to a driving pulley through a fixed bearing, and the driving pulley and the driven pulley are connected by a belt.

[0007] Furthermore, the supporting device includes two bases, on which bearing seats are fixedly arranged, and the two bearing seats are rotatably connected to two rotating shafts respectively.

[0008] Furthermore, two protective plates are arranged on the cover plate, and the two protective plates are arranged in parallel on the outer sides of the through hole.

[0009] Furthermore, a power supply interface and a heating resistance wire are arranged inside the rotating roller, the heating resistance wire is electrically connected to the power supply interface, and the heating resistance wire is circulated and arranged inside the rotating roller.

[0010] Furthermore, the calendering roller, the driving roller and the winding roller have the same rotation speed.

[0011] Furthermore, a slitting mechanism is provided between the third guide roller and the winding roller, and a fourth guide roller is provided between the slitting mechanism and the winding roller.

[0012] Furthermore, the slitting mechanism includes a support frame, on which a rotating shaft cross bar and a cutting guide roller are rotatably arranged, a cutting tool is fixedly arranged on the rotating shaft cross bar, the cutting tool is located above the cutting guide roller, the cutting tool includes a knife seat and a cutting knife fixed to the bottom of the knife seat, the knife seat is fixedly arranged on the rotating shaft cross bar, and the cutting guide roller is provided with a cutting groove matching the blade of the cutting knife.

[0013] Furthermore, a clamping and fixing device is also provided on the support frame, and the clamping and fixing device includes a fixed shaft and a clamping ring. The clamping ring is fixedly set on the support frame, and the rotating shaft cross bar passes through the clamping ring and is coaxially arranged with the clamping ring. A fixed disk is fixedly set on one end of the fixed shaft, and the other end of the fixed shaft is coaxially fixedly connected with the end of the rotating shaft cross bar. A reset spring and a clamping ring buckle are also passed through the fixed shaft, and the reset spring is arranged between the clamping ring buckle and the fixed disk. A plurality of clamping grooves are opened on the clamping ring, and a clamping block matching the clamping groove is provided on the clamping ring buckle, and a grip ring is also fixedly provided on the clamping ring buckle.

[0014] The advantages and positive effects of the present invention are:

[0015] 1. In the transparent conductive film production line of the present invention, the conductive medium coating device is arranged after the melt extruder and before the cooling device; when in production and use, the conductive medium coating device directly coats the conductive medium on the surface of the film in a high-temperature state, and after cooling and shaping, the conductive medium is wrapped inside the film, thereby isolating the conductive medium from the air and making the film conductive at the same time; the present invention simplifies the production process, thereby saving production time and improving production efficiency.

[0016] 2. In the transparent conductive film production line of the present invention, the conductive medium is directly solidified and coated inside the film during the production process, so there is no need to coat the surface of the film with a UV adhesive layer, which reduces the use of UV adhesive and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a transparent conductive film production line of the present invention;

[0018] Figure 2 This is a front view of a conductive medium coating device in a transparent conductive film production line of the present invention;

[0019] Figure 3 yes Figure 2 AA section view;

[0020] Figure 4 It is a structural diagram of a slitting mechanism in a transparent conductive film production line of the present invention;

[0021] Figure 5 yes Figure 4 A magnified view of the structure in the middle;

[0022] Figure 6 yes Figure 5 Middle BB section view;

[0023] Figure 7It is a structural diagram of a snap-fit ​​ring buckle in a conductive film production line of the present invention;

[0024] In the figure: 1-melt extruder, 2-calendering roller, 3-first guide roller, 4-cooling device, 5-second guide roller, 6-conductive medium coating device, 601-medium solution storage tank, 602-rotating roller, 6021-power interface, 6022-heating resistance wire, 603-covering plate, 6031-through hole, 604-fixing column, 605-rotating shaft, 606-driven pulley, 607-servo motor, 608-driving pulley, 609-base, 610-bearing seat, 611-protective plate, 7-the third guide roller, 8-winding roller, 9-slitting mechanism, 901-support frame, 902-clamping fixing device, 9021-fixed shaft, 9022-fixed plate, 9023-clamping ring, 9024-reset spring, 9025-clamping ring buckle, 9026-clamping groove, 9027-clamping block, 9028-grip ring, 903-rotating shaft cross bar, 904-cutting guide roller, 9041-cutting groove, 905-cutting tool, 9051-tool holder, 9052-cutting tool, 10-the fourth guide roller. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 As shown, a transparent conductive film production line includes, from upstream to downstream, a melt extruder 1, a calender roller 2, a first guide roller 3, a cooling device 4, a third guide roller 7 and a winding roller 8, characterized in that: a conductive medium coating device 6 is further provided between the cooling device 4 and the first guide roller 3, and a second guide roller 5 is provided between the conductive medium coating device 6 and the cooling device 4. The conductive medium coating device 6 is provided to coat the conductive medium on the film, thereby making the film conductive. First, the melt extruder 1 extrude the film and calender the film into a thin layer through the calendering roller 2. The film passes through the conductive medium coating device 6 under the guidance of the first guide roller 3. The conductive medium coating device 6 coats the conductive medium on the surface of the film. Since the film is in a high temperature state at this time, it is easy to adsorb the conductive medium on the surface. Then, the film passes through the cooling device 4 under the guidance of the second guide roller 5. The film is cooled down under the action of the cooling device 4. It is gradually cooled and then shaped, and the conductive medium is wrapped and covered inside the film to isolate it from the air, which can protect the conductive medium from being oxidized, and there is no need to add a rubber layer on the surface of the film. Then, the film is moved to the winding roller 8 under the guidance of the third guide roller 7, and finally wound by the winding roller 8.

[0027] like Figure 2 and Figure 3As shown, in this embodiment, further, the conductive medium coating device 6 includes a dielectric solution storage tank 601, a rotating roller 602 is arranged on the upper side of the dielectric solution storage tank 601, and the rotating roller 602 is fixedly supported on the upper side of the dielectric solution storage tank 601 by a supporting device; the dielectric solution storage tank 601 contains a conductive dielectric solution, and the bottom roller surface of the rotating roller 602 is located in the conductive dielectric solution; a covering plate 603 is arranged on the upper side of the rotating roller 602, and a through hole 6031 is opened in the middle of the covering plate 603, and the rotating roller 602 is fixedly supported on the upper side of the dielectric solution storage tank 601 by a supporting device; the conductive dielectric solution is contained in the dielectric solution storage tank 601, and the bottom roller surface of the rotating roller 602 is located in the conductive dielectric solution; The roller 602 passes through the cover plate 603, and its top roller surface is located on the upper side of the cover plate 603; fixed columns 604 are fixedly provided at the four corners of the bottom of the cover plate 603, and rotating shafts 605 are fixedly provided on both sides of the rotating roller 602, one of the rotating shafts 605 is fixedly connected to a driven pulley 606, and a servo motor 607 is also provided on the cover plate 603, and the output shaft of the servo motor 607 is fixedly connected to a driving pulley 608 through a fixed bearing, and the driving pulley 608 is connected to the driven pulley 606 through a belt. The medium solution storage tank 601 is used to hold the nanosilver solution, and the servo motor 607 provides power for the rotation of the rotating roller 602. When the servo motor 607 works, its output shaft drives the active pulley 608 to rotate through the fixed bearing, and the active pulley 608 drives the driven pulley 606 to rotate through the belt, and then the driven pulley 606 rotates to drive the rotating roller 602 to rotate; the bottom roller surface of the rotating roller 602 is located in the medium solution storage tank 601 and contacts with the conductive medium solution, and the top roller surface of the rotating roller 602 passes through the through hole 6031 of the covering plate 603 and Its roller surface is located above the top surface of the covering plate 603, so the bottom roller surface of the rotating roller 602 is soaked with the conductive medium solution when the rotating roller 602 rotates, and the conductive medium solution continuously adheres to the roller surface of the rotating roller 602 as the rotating roller 602 rotates; the film to be coated with the conductive medium slides along the plate surface of the covering plate 603, so the top roller surface of the rotating roller 602 is in contact with the bottom surface of the film, and the conductive medium on its roller surface is coated on the bottom surface of the film as the rotating roller 602 rotates. The film is cooled after passing through the covering plate 603, and the conductive medium is solidified on the surface of the film.

[0028] In this embodiment, further, the support device includes two bases 609, on which bearing seats 610 are fixedly arranged, and the two bearing seats 610 are respectively rotatably connected to the two rotating shafts 605. The support device is used to support the position of the fixed rotating roller, and the base 609 with the bearing seats 610 is used as the support device in this technical solution to stably support the rotating roller 602.

[0029] In this embodiment, further, two protective plates 611 are arranged on the cover plate 603, and the two protective plates 611 are arranged in parallel on the outer sides of the through hole 6031. The protective plates 611 are used to regulate the moving direction of the film, prevent the film from deviating when moving, and thus ensure that the nanosilver coated by the rotating roller 602 is uniform and the coating position is accurate.

[0030] In this embodiment, further, a power interface 6021 and a heating resistor 6022 are provided inside the rotating roller 602, and the heating resistor 6022 is electrically connected to the power interface 6021, and the heating resistor 6022 is circulated and arranged inside the rotating roller 602. The heating resistor 104 is provided inside the rotating roller 602 to heat the rotating roller 1 when the power is turned on. When the nanosilver solution is coated on the rotating roller 1, the water in the nanosilver solution adhering to the surface of the rotating roller 1 is directly evaporated because the temperature of the rotating roller 1 is relatively high, so the nanosilver is adhered to the roller surface of the rotating roller 1. When the rotating roller 1 contacts the PET film passing through the cover plate 3, the temperature of the PET film is relatively high because the PET film is a newly extruded film, which is higher than the temperature on the rotating roller 1. That is, when the top roller surface of the rotating roller 1 contacts the PET film, the nanosilver film on its surface is melted by heat and directly attached to the PET film. After that, the nanosilver of the PET film is directly solidified on the surface of the PET film during the cooling process. When the top roller surface of the rotating roller 1 contacts the PET film, the temperature of the film is partially transferred to the rotating roller 1, so that the rotating roller 1 can be kept at a high temperature continuously.

[0031] In this embodiment, further, the rotation speeds of the calendering roller 2, the active roller 602 and the winding roller 8 are the same. The same rotation speed can ensure the normal transmission and movement of the film. The active roller 602 keeps the same rotation speed as the winding roller 8 and the calendering roller 2 in order to evenly coat the film with its conductive medium. If the rotation speeds are different, it may cause uneven coating of its conductive medium and thus affect the conductivity of the film when it is used.

[0032] In this embodiment, further, a slitting mechanism 9 is provided between the third guide roller 7 and the winding roller 8, and a fourth guide roller 10 is provided between the slitting mechanism 9 and the winding roller 8. The slitting mechanism 9 can be provided to slit the film into required widths.

[0033] In this embodiment, further, the slitting mechanism 9 includes a support frame 901, on which a rotating shaft cross bar 903 and a cutting guide roller 904 are rotatably arranged, a cutting tool 905 is fixedly arranged on the rotating shaft cross bar 903, and the cutting tool 905 is located above the cutting guide roller 904. The cutting tool 905 includes a knife seat 9051 and a cutting knife 9052 fixed at the bottom of the knife seat 9051, and the knife seat 9051 is fixedly arranged on the rotating shaft cross bar 903, and the cutting guide roller 904 is provided with a cutting groove 9041 matching the blade of the cutting knife 9052. Among them, the support frame 901 is used to fix and support the rotating shaft cross bar 903 and the cutting guide roller 904, and the rotating shaft cross bar 903 is used to fix the position of the cutting tool 905; the setting of the cutting groove 9041 facilitates the travel route of the cutting knife 9052 during cutting. The blade of the cutting knife 9052 contacts the groove wall of the cutting groove 9041. During production, the film moves along the roller surface of the cutting guide roller 904, and the cutting knife 9052 divides the film. The cutting groove 9041 can limit the position of the blade of the cutting knife 9052, thereby ensuring that the film is cut evenly and the cutting is straight without oblique cutting, thereby ensuring that the width of the cut film is consistent.

[0034] In this embodiment, further, a clamping fixing device 902 is provided on the support frame 901, and the clamping fixing device 902 includes a fixed shaft 9021 and a clamping ring 9023, the clamping ring 9023 is fixedly arranged on the support frame 901, and the rotating shaft cross bar 903 passes through the clamping ring 9023 and is arranged coaxially with the clamping ring 9023, one end of the fixed shaft 9021 is fixedly provided with a fixed disk 9022, and the other end of the fixed shaft 9021 is fixed with a fixed disk 9022. The ends of the rotating shaft cross bar 903 are fixedly connected coaxially, and the fixed shaft 9021 is also provided with a reset spring 9024 and a clamping ring buckle 9025, the reset spring 9024 is provided between the clamping ring buckle 9025 and the fixed plate 9022, the clamping ring 9023 is provided with a plurality of clamping grooves 9026, the clamping ring buckle 9025 is provided with a clamping block 9027 matching the clamping grooves 9026, and the clamping ring buckle 9025 is also fixed with a grip ring 9028. The clamping fixing device 902 is used to fix the relative position of the rotating cross bar 903 and the support frame 901, thereby ensuring that during the working process, the rotating shaft cross bar 903 will not rotate along the support frame 901 to affect the normal progress of the cutting process. When cutting is required, the grip ring 9028 is held by hand to move the snap ring buckle 9025 toward the fixed disk 9022, and then the reset spring 9024 is compressed, and its clamping block 9027 is separated from the clamping slot 9026, and then the rotating shaft cross bar 903 or the knife seat 9051 is rotated, so that the blade of the cutting knife 9052 contacts the cutting slot 9041, and then the grip ring 9028 is moved toward the clamping ring 9023, so that the clamping block 9027 is clamped and fixed with the corresponding clamping slot 9026, that is, the position of the rotating shaft cross bar 903 and the cutting knife 905 is fixed. The reset spring 9024 is provided to ensure that the clamping ring buckle 9025 and the clamping ring 9023 are firmly fixed, and the two will not be separated to affect normal use.

[0035] The transparent conductive film production line of the present invention is used in production:

[0036] First, the melt extruder 1 melts the raw material master batches and extrudes a film, and the extruded film is pressed through the calender roll 2 into a film of a fixed width.

[0037] Secondly, the film is guided by the first guide roller 3 and passes through the conductive medium coating device 6 to be coated with a layer of conductive medium on its surface. Specifically, the servo motor 607 works, and its output shaft drives the active pulley 608 to rotate through the fixed bearing, and the active pulley 608 drives the driven pulley 606 to rotate through the belt, and then the driven pulley 606 rotates to drive the rotating roller 602 to rotate; when the rotating roller 602 rotates, its bottom roller surface is soaked with the conductive medium solution, and as the rotating roller 602 rotates, its conductive medium solution continuously adheres to the roller surface of the rotating roller 602; the film moves on the surface of the covering plate 603 between the two protective plates 611, and the top roller surface of the rotating roller 602 contacts the bottom surface of the film. As the rotating roller 602 rotates, the conductive medium on its roller surface is coated on the bottom surface of the film, and the film is cooled after passing through the covering plate 603, and its conductive medium is solidified on the surface of the film.

[0038] Next, the film coated with the conductive medium passes through the cooling device 4 under the guidance of the second guide roller 5 to be cooled. The temperature of the film is lowered under the action of the cooling device 4, and then the film is solidified and formed.

[0039] Next, the cooled film is cut into films of required width by the slitting mechanism 9 under the action of the third guide roller 7. Specifically, the film moves along the roller surface of the cutting guide roller 904, and the cutting knife 9052 cuts the film along the cutting groove 9041 to form a film of fixed width.

[0040] Finally, after the slit film, each part is guided by the fourth guide roller 10 and is rolled up and stored by different winding rollers 8, and the production of the transparent conductive film is completed.

[0041] The transparent conductive film production line of the present invention produces the film and coats its conductive medium at one time during the actual production process, so that the conductive film is produced at one time without winding and unwinding in the middle, thereby saving production time and improving production efficiency; at the same time, the process of coating UV glue is directly eliminated, which simplifies the production process and reduces production costs.

[0042] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A transparent conductive film production line, comprising, from upstream to downstream, a melt extruder (1), a calender roller (2), a first guide roller (3), a cooling device (4), a third guide roller (7) and a winding roller (8), characterized in that: A conductive medium coating device (6) is further provided between the cooling device (4) and the first guide roller (3); a second guide roller (5) is provided between the conductive medium coating device (6) and the cooling device (4); the conductive medium coating device (6) comprises a dielectric solution storage tank (601); a rotating roller (602) is provided on the upper side of the dielectric solution storage tank (601); the rotating roller (602) is fixedly supported on the upper side of the dielectric solution storage tank (601) by a supporting device; the dielectric solution storage tank (601) contains a conductive dielectric solution; the bottom roller surface of the rotating roller (602) is located in the conductive dielectric solution; a covering plate (603) is provided on the upper side of the rotating roller (602); A through hole (6031) is provided in the middle of the cover plate (603); the rotating roller (602) passes through the cover plate (603), and its top roller surface is located on the upper side of the cover plate (603); fixed columns (604) are fixedly provided at the four corners of the bottom of the cover plate (603); rotating shafts (605) are fixedly provided on both sides of the rotating roller (602); a driven pulley (606) is fixedly connected to one of the rotating shafts (605); a servo motor (607) is also provided on the cover plate (603); the output shaft of the servo motor (607) is fixedly connected to a driving pulley (608) via a fixed bearing; the driving pulley (608) and the driven pulley (606) are connected via a belt.

2. A transparent conductive film production line according to claim 1, characterized in that: The supporting device comprises two bases (609), on which a bearing seat (610) is fixedly arranged, and the two bearing seats (610) are rotatably connected to two rotating shafts (605) respectively.

3. The transparent conductive film production line according to claim 1, characterized in that: Two protective plates (611) are arranged on the cover plate (603), and the two protective plates (611) are arranged in parallel on the outer sides of the through hole (6031).

4. The transparent conductive film production line according to claim 1, characterized in that: The rotating roller (602) is provided with a power interface (6021) and a heating resistance wire (6022) inside. The heating resistance wire (6022) is electrically connected to the power interface (6021). The heating resistance wire (6022) is circulated and arranged inside the rotating roller (602).

5. The transparent conductive film production line according to claim 1, characterized in that: The calendering roller (2), the rotating roller (602) and the winding roller (8) have the same rotation speed.

6. The transparent conductive film production line according to claim 1, characterized in that: A slitting mechanism (9) is also provided between the third guide roller (7) and the winding roller (8), and a fourth guide roller (10) is provided between the slitting mechanism (9) and the winding roller (8).

7. A transparent conductive film production line according to claim 6, characterized in that: The slitting mechanism (9) comprises a support frame (901), on which a rotating shaft cross bar (903) and a cutting guide roller (904) are rotatably arranged, a cutting tool (905) is fixedly arranged on the rotating shaft cross bar (903), the cutting tool (905) is located above the cutting guide roller (904), the cutting tool (905) comprises a knife seat (9051) and a cutting knife (9052) fixed at the bottom of the knife seat (9051), the knife seat (9051) is fixedly arranged on the rotating shaft cross bar (903), and the cutting guide roller (904) is provided with a cutting groove (9041) matching the blade of the cutting knife (9052).

8. The transparent conductive film production line according to claim 7, characterized in that: The support frame (901) is also provided with a clamping fixing device (902), and the clamping fixing device (902) comprises a fixed shaft (9021) and a clamping ring (9023), the clamping ring (9023) is fixedly arranged on the support frame (901), and the rotating shaft cross bar (903) passes through the clamping ring (9023) and is arranged coaxially with the clamping ring (9023), one end of the fixed shaft (9021) is fixedly provided with a fixed disk (9022), and the other end of the fixed shaft (9021) is coaxially fixedly connected with the end of the rotating shaft cross bar (903), and a reset spring (9024) and a clamping ring buckle (9025) are also passed through the fixed shaft (9021), and the reset spring (9024) is arranged on the clamping ring buckle (9025). Between the fixing plate (9022), the clamping ring (9023) is provided with a plurality of clamping grooves (9026). The snap ring buckle (9025) is provided with a snap block (9027) matching the snap slot (9026). The snap ring buckle (9025) is also fixedly provided with a grip ring (9028).

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