Disclosure of Invention
In view of the above, the invention aims to provide a uniform drying device for a polyimide film and a use method thereof, so as to solve the problem that the imidization degree of the film is obviously inconsistent due to an overlarge temperature difference between two sides of the existing drying equipment.
Based on the above purpose, the invention provides a polyimide film uniform drying device, which comprises a horizontal drying box, wherein the front end and the rear end of the horizontal drying box are respectively provided with a feeding port and a discharging port, and the polyimide film uniform drying device further comprises:
the closed drying bin is arranged inside the horizontal drying box, a unit heating box is arranged on the upper side of the closed drying bin, and a transverse guide rail is horizontally arranged in the middle of the unit heating box;
the fixed suspension frame is arranged in the middle of the unit heating box, a plurality of fixed suspension frames are horizontally and uniformly distributed in the middle of the unit heating box, a balance spring is connected and arranged below the fixed suspension frame, a suspension support frame is connected and arranged at the bottom end of the balance spring, an electric heating pipe is horizontally arranged in the middle of the suspension support frame, a transverse sliding groove is formed in the middle of the fixed suspension frame, and the fixed suspension frame is in sliding connection with the transverse guide rail through the transverse sliding groove;
the horizontal detection tube is arranged below the suspension support frame, the front end and the rear end of the horizontal detection tube are respectively provided with a fixed connecting frame, and the horizontal detection tube is fixedly connected with the fixed suspension frame through the fixed connecting frames;
the middle of level detection pipe is provided with vertical fall way, the inside of level detection pipe is provided with inflation stock solution storehouse, inflation stock solution storehouse with communicate each other between the vertical fall way, the inside packing in inflation stock solution storehouse has liquid, the nested slip in inboard of vertical fall way is provided with the lift piston, the top of lift piston is provided with the lift ejector pin, the lift ejector pin with suspend in midair the mutual fixed connection of support frame.
Furthermore, vertical guide rods are arranged at the front end and the rear end of the fixed suspension frame in parallel, guide sliding sleeves are arranged at the front end and the rear end of the suspension support frame in parallel, the suspension support frame is connected with the vertical guide rods in a sliding mode through the guide sliding sleeves, the vertical central line of the vertical lifting pipe is perpendicular to the horizontal central line of the horizontal detection pipe, and the vertical central line of the vertical lifting pipe is parallel to the vertical central line of the vertical guide rods.
Furthermore, flexible air bags are arranged between the adjacent fixed suspension frames, the adjacent fixed suspension frames are connected with each other through the flexible air bags, an electromagnetic air valve is arranged in the middle of the flexible air bags, an inflation hose is connected and arranged on the outer side of the electromagnetic air valve, an inflation regulating pump is connected and arranged at the outer end of the inflation hose, and the flexible air bags are inflated and deflated to push the connected fixed suspension frames to move horizontally to be away from or close to each other.
Further, the left and right sides symmetry parallel arrangement that seals the stoving storehouse has horizontal guide rail, horizontal guide rail's horizontal central line with be parallel to each other between the horizontal central line that seals the stoving storehouse, unit heating cabinet follows the horizontal central line direction that seals the stoving storehouse is provided with a plurality ofly along arranging, the left and right sides of unit heating cabinet is all connected and is provided with the direction balladeur train, the centre of direction balladeur train is provided with the direction spout, the direction balladeur train passes through the direction spout with horizontal guide rail sliding connection each other.
Furthermore, a plurality of translation friction wheels are uniformly arranged in the middle of the horizontal guide rail and are connected with the horizontal guide rail in a rotating mode, the axial center lines of the translation friction wheels are perpendicular to the horizontal center line of the horizontal guide rail, the outer side wheel surfaces of the translation friction wheels are in contact with the inner side surface of the guide sliding groove, and a translation motor is arranged at the end of the shaft end of each translation friction wheel.
Further, both ends all are provided with the regulation opening around the sealed stoving storehouse, it is provided with the closing cover to adjust the gomphosis of open-ended centre symmetry, the centre of closing cover is provided with the connection pivot, the closing cover that the symmetry set up through connect the pivot respectively with adjust open-ended left and right sides edge rotation and connect, the medial surface of closing cover is provided with extension guide rail, the outside of connecting the pivot is provided with spacing fixture block, the closing cover is followed connect the pivot and rotate when opening through spacing fixture block keeps opening the maximum angle and be ninety degrees, this moment the extension guide rail that the medial surface of closing cover set up is located same straight line with the horizontal guide rail that corresponds, the direction balladeur train passes through the direction spout with extension guide rail mutual sliding connection.
Further, the downside level that seals the stoving storehouse is evenly arranged and is provided with a plurality of horizontal air distribution plates, the upper surface of horizontal air distribution plate with be parallel to each other between the horizontal central line that seals the stoving storehouse, the below of horizontal air distribution plate is connected and is provided with toper cloth tuber pipe, the centre of horizontal air distribution plate evenly runs through and is provided with a plurality of vertical holes of airing exhaust, toper cloth tuber pipe passes through vertical hole of airing exhaust with seal the stoving storehouse and communicate each other, the equal level of the left and right sides that seals the stoving storehouse is evenly arranged and is provided with a plurality of horizontal air intakes, the centre of horizontal air intake is provided with horizontal fan, the outside connection of horizontal air intake is provided with the backward flow tuber pipe, toper cloth tuber pipe passes through the backward flow tuber pipe with horizontal air intake communicates each other.
Furthermore, a plurality of side heating barrels are symmetrically arranged on the left side and the right side of the closed drying bin in parallel, the side heating barrels are arranged below the horizontal guide rail in parallel, the side heating barrels are uniformly arranged along the horizontal center line direction of the closed drying bin, and a plurality of side electric heating tubes are arranged in the middle of the side heating barrels.
Further, both ends all are provided with ring rail around the side cartridge heater, the upper and lower bilateral symmetry of side cartridge heater is provided with cowl, cowl both ends around both ends with ring rail sliding connection, the centre at both ends is provided with arc rack around cowl, all be provided with adjusting gear in the middle of the upper and lower both sides of ring rail, arc rack with intermeshing between the adjusting gear, adjusting gear's axle head is provided with accommodate motor.
The use method of the polyimide film uniform drying device comprises the following steps:
the polyimide film is horizontally conveyed to a closed drying bin in a horizontal drying box through a material inlet and outlet, the polyimide film is horizontally conveyed and stretched along the closed drying bin, then an electric heating pipe in a unit heating box heats and dries the horizontally conveyed film below the electric heating pipe, the electric heating pipe can synchronously heat a horizontal detection pipe below the electric heating pipe when heating the film, the liquid filled in the horizontal detection pipe can expand or contract when the temperature rises or falls to push a lifting piston in a vertical lifting pipe to move up and down, the lifting piston and a lifting ejector rod are pushed to move up when the temperature of the horizontal detection pipe is higher, and then a suspension support frame is driven to move up, so that the distance between the electric heating pipe and the film is lengthened, the temperature is reduced, the lifting piston and the lifting ejector rod can move down when the temperature of the horizontal detection pipe is lower, and then the suspension support frame is driven to move down, the distance between the electric heating pipe and the film is increased, so as to form an automatic dynamic adjusting mechanism, the suspension support frame is made to adjust the height, each position is heated and adjusted in a subarea, so that the transverse temperature difference is reduced, the heating temperature of each position is adjusted uniformly, and the heating temperature of each position is adjusted according to the heating center, so as to achieve the constant heating temperature adjustment.
The invention has the beneficial effects that: from the above, it can be seen that in the uniform drying device for polyimide film provided by the present invention, the closed drying bin inside the horizontal drying box is used as the drying space for the polyimide film, the polyimide film can be horizontally conveyed and stretched along the closed drying bin, the unit heating box arranged on the upper side of the closed drying bin is provided with a plurality of electric heating pipes arranged in a row for heating and drying the polyimide film horizontally conveyed below, the electric heating pipes are arranged on the suspension support frame, the suspension support frame can move up and down to adjust the height, i.e. the distance between the suspension support frame and the film below, so that the positions of the electric heating pipes at each position from the middle to both sides can be adjusted, the heating adjustment of each position is performed in a partition manner, the transverse temperature difference is reduced, the drying and heating temperature is improved, the heating temperature at each position of the film is the same, and the uniformity of the film is favorably maintained to balance the imidization degree, and then improve the production quality of the polyimide film, and every hangs and corresponds to and has set up the horizontal check pipe under the support frame, fill with the liquid in the horizontal check pipe, the liquid temperature will expand or shrink when rising or lowering, thus can promote the lifting piston in the vertical lift pipe to move up and down, promote lifting piston and lift ejector pin to move up when the temperature of the horizontal check pipe is higher, and then drive and hang the support frame to move up, make the electric heating pipe and distance of the film lengthen, the temperature lowers, and the lifting piston and lift ejector pin will move down when the temperature of the horizontal check pipe is lower, and then drive and hang the support frame to move down, make the electric heating pipe and distance of the film shorten, the temperature rises, thus form the automatic dynamic adjustment mechanism, facilitate the heating temperature of the automatic control each position, in order to keep the temperature invariable and improve the stoving degree of consistency, the use is more convenient and faster.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, a polyimide film uniform drying device includes a horizontal drying box 1, wherein the front and rear ends of the horizontal drying box 1 are provided with a material inlet and outlet 101, and the device further includes:
the closed drying bin 102 is arranged inside the horizontal drying box 1, a unit heating box 4 is arranged on the upper side of the closed drying bin 102, and a transverse guide rail 403 is horizontally arranged in the middle of the unit heating box 4;
the fixed suspension frame 5 is arranged in the middle of the unit heating box 4, a plurality of fixed suspension frames 5 are horizontally and uniformly distributed in the middle of the unit heating box 4, a balance spring 504 is connected and arranged below the fixed suspension frame 5, a suspension support frame 503 is connected and arranged at the bottom end of the balance spring 504, an electric heating pipe 506 is horizontally arranged in the middle of the suspension support frame 503, a transverse sliding groove 502 is arranged in the middle of the fixed suspension frame 5, and the fixed suspension frame 5 is in sliding connection with the transverse guide rail 403 through the transverse sliding groove 502;
the horizontal detection tube 6 is arranged below the suspension support frame 503, the front end and the rear end of the horizontal detection tube 6 are respectively provided with a fixed connecting frame 601, and the horizontal detection tube 6 is fixedly connected with the fixed suspension frame 5 through the fixed connecting frames 601;
the middle of the horizontal detection tube 6 is provided with a vertical lifting tube 603, the inside of the horizontal detection tube 6 is provided with an expansion liquid storage bin 602, the expansion liquid storage bin 602 is communicated with the vertical lifting tube 603, the inside of the expansion liquid storage bin 602 is filled with liquid, the inner side of the vertical lifting tube 603 is provided with a lifting piston 604 in a nested sliding manner, a lifting push rod 605 is arranged above the lifting piston 604, and the lifting push rod 605 is fixedly connected with the suspension support frame 503.
In this embodiment, the apparatus uses the closed drying chamber 102 inside the horizontal drying chamber 1 as the drying space of the polyimide film, the polyimide film can be horizontally conveyed and stretched along the closed drying chamber 102, a plurality of fixed suspension frames 5 are arranged in the unit heating chamber 4 arranged on the upper side of the closed drying chamber 102, a suspension support 503 and an electric heating pipe 506 installed on the suspension support 503 are arranged below each fixed suspension frame 5 of the fixed suspension frames 5, the electric heating pipe 506 can heat and dry the film conveyed horizontally below, the fixed suspension frames 5, the suspension support 503 and the electric heating pipe 506 installed on the suspension support 503 are all horizontally arranged along the conveying direction of the film, and the suspension support 503 is connected with the fixed suspension frame 5 through a balance spring 504, so that the suspension support 503 can move up and down to adjust the height, namely the distance between the electric heating pipe and the film below, thereby being capable of adjusting the position of the electric heating pipe 506 from the middle to each position of two sides, carrying out zoned heating adjustment on each position, adjusting and reducing the transverse temperature difference, improving the drying and heating uniformity, ensuring that the heating temperature at each position of the film is the same, being beneficial to maintaining the balance of the imidization degree at each position of the film, further improving the production quality of the polyimide film, wherein a horizontal detection pipe 6 is correspondingly arranged below each suspension support frame 503, liquid is filled in the horizontal detection pipe 6, and the liquid can expand or contract when the temperature rises or falls, thereby being capable of pushing the lifting piston 604 in the vertical lifting pipe 603 to move up and down, when the temperature of the horizontal detection pipe 6 is higher, the lifting piston 604 and the lifting mandril 605 are pushed to move up, further driving the suspension support frame 503 to move up, and prolonging the distance between the electric heating pipe 506 and the film, the temperature is reduced, and the lift piston 604 and the lift ejector pin 605 can move downwards when the temperature of the horizontal detection tube 6 is lower, and then drive the suspension support frame 503 to move downwards, so that the distance between the electric heating tube 506 and the film is shortened, the temperature is raised, thereby forming an automatic dynamic adjusting mechanism, and facilitating the automatic control of the heating temperature of each position, so as to keep the temperature constant and improve the drying uniformity, more convenient and faster during use, and meanwhile, the fixed suspension frame 5 is slidably connected with the transverse guide rail 403 through the transverse sliding groove 502, so that the fixed suspension frame 5 can horizontally slide, and further facilitating the adjustment of the density of the electric heating tube 506 of each position in the horizontal direction according to the heating requirement, so as to achieve different heating temperature intervals, or facilitate the keeping the drying heating temperature constant of the central position and both sides.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, preferably, vertical guide rods 501 are disposed in parallel at the front and rear ends of the fixed suspension frame 5, guide sliding sleeves 505 are disposed at the front and rear ends of the suspension support frame 503, the suspension support frame 503 is slidably connected to the vertical guide rods 501 through the guide sliding sleeves 505, the vertical center line of the vertical lifting tube 603 is perpendicular to the horizontal center line of the horizontal detection tube 6, the vertical center line of the vertical lifting tube 603 is parallel to the vertical center line of the vertical guide rods 501, the device heats and dries the polyimide film horizontally conveyed below through a plurality of electric heating tubes 506 arranged in the unit heating box 4, the suspension support frame 503 is slidably connected to the vertical guide rods 501 through the guide sliding sleeves 505, and the horizontal detection tube 6 correspondingly disposed below the electric heating tubes 506 is heated, expands or contracts through cooling by liquid filled inside, pushes the lifting piston 604 in the vertical lifting tube 603 to move up and down, so as to drive the suspension support frame 503 to move up and down, the heating distance between the electric heating tubes 506 and the film is adjusted, thereby forming a dynamic adjustment mechanism for automatically adjusting the heating temperature of the heating position, and reducing the heating temperature, thereby increasing the heating uniformity.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, optionally, a flexible air bag 404 is disposed between adjacent fixed suspension frames 5, the adjacent fixed suspension frames 5 are connected to each other through the flexible air bag 404, an electromagnetic air valve 405 is disposed in the middle of the flexible air bag 404, an inflation hose 406 is disposed outside the electromagnetic air valve 405, an inflation adjusting pump 407 is disposed at an outer end of the inflation hose 406, the flexible air bag 404 is expanded and contracted through inflation to push the connected fixed suspension frames 5 to move horizontally away from or close to each other, the device drives the electric heating pipe 506 to move up and down through the suspension support frame 503, the heating distance between the electric heating pipe 506 and the film is adjusted, the heating temperature at each position is controlled to reduce the transverse temperature difference uniformity, the heating temperature at each position is increased, the heating temperature at each position of the film is the same, the fixed suspension frames 5 are slidably connected to the transverse guide rail 403 through the transverse chutes 502, the adjacent fixed suspension frames 5 are connected to each other through the flexible air bag 404, the flexible air bags 404 can be expanded and contracted to push the connected fixed suspension frames 5 to move horizontally away from or close to each other, so as to adjust the heating temperature at each position of the heating pipe, and to maintain the heating temperature at each position of the heating area.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, optionally, horizontal guide rails 103 are symmetrically and parallelly disposed on the left and right sides of the closed drying bin 102, a horizontal center line of the horizontal guide rail 103 is parallel to a horizontal center line of the closed drying bin 102, a plurality of unit heating boxes 4 are arranged along a direction of the horizontal center line of the closed drying bin 102, guide carriages 401 are connected to the left and right sides of the unit heating boxes 4, a guide chute 402 is disposed in the middle of the guide carriage 401, the guide carriage 401 is slidably connected to the horizontal guide rail 103 through the guide chute 402, a plurality of friction translation wheels 104 are uniformly arranged in the middle of the horizontal guide rail 103, the friction translation wheels 104 are rotatably connected to the horizontal guide rail 103, axial center lines of the friction wheels 104 are perpendicular to the horizontal center line of the horizontal guide rail 103, the outer side wheel surface of the translational friction wheel 104 is contacted with the inner side surface of the guide sliding groove 402, the end of the shaft end of the translational friction wheel 104 is provided with a translational motor 105, the device drives the electric heating pipe 506 to move up and down through a suspension support frame 503 in the unit heating box 4, the heating distance between the electric heating pipe 506 and the film is adjusted, the heating temperature of each position is controlled, the transverse temperature difference is adjusted and reduced, the drying and heating uniformity is improved, the heating temperature of each position of the film is the same, a plurality of electric heating pipes 506 are arranged in each unit heating box 4, a plurality of unit heating boxes 4 are arranged in the closed drying bin 102, so that each unit heating box 4 can form a heating unit, the plurality of unit heating boxes 4 are connected with the horizontal guide rail 103 through the guide sliding frames 401 on two sides, and the guide sliding frames 401 are connected with the horizontal guide rail 103 through the guide sliding groove 402, thereby unit heating cabinet 4 can be followed horizontal guide 103 horizontal slip, and the centre of horizontal guide 103 evenly arranges and is provided with a plurality of translation friction pulley 104, every translation friction pulley 104 all can rotate through translation motor 105 solitary control, with through translation friction pulley 104 drive unit heating cabinet 4 along horizontal guide 103 horizontal slip adjusting position, thereby can adjust whole closed stoving storehouse 102 in, the position and the interval of unit heating cabinet 4, and then adjust heating density and position, thereby can adjust according to actual heating stoving demand, it is more nimble convenient during the use.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, optionally, the front and rear ends of the closed drying bin 102 are provided with adjusting openings 2, the middle of the adjusting opening 2 is symmetrically embedded with a closed cover plate 202, the middle of the closed cover plate 202 is provided with a connecting rotating shaft 201, the symmetrically arranged closed cover plates 202 are respectively and mutually rotatably connected with the left and right side edges of the adjusting opening 2 through the connecting rotating shaft 201, the inner side surface of the closed cover plate 202 is provided with an extending guide rail 203, the outer side of the connecting rotating shaft 201 is provided with a limiting fixture block 204, the closed cover plate 202 is kept to be opened at a maximum angle of ninety degrees through the limiting fixture block 204 when being rotatably opened along the connecting rotating shaft 201, at this time, the extending guide rail 203 arranged on the inner side surface of the closed cover plate 202 and the corresponding horizontal guide rail 103 are positioned on the same straight line, the guide carriage 401 is mutually and slidably connected with the extending guide rail 203 through the guide chute 402, the device continuously heats the film by arranging a plurality of electric heating pipes 506 in the unit heating boxes 4, a plurality of unit heating boxes 4 are arranged in the closed drying bin 102, each unit heating box 4 can form a heating unit, the unit heating boxes 4 can horizontally slide along the horizontal guide rail 103 to adjust the position and the distance, further the heating density and the position are adjusted to adjust according to the actual heating and drying requirements, the front end and the rear end of the closed drying bin 102 are respectively provided with an adjusting opening 2, the adjusting openings 2 are positioned above the material inlet and outlet 101, the adjusting openings 2 are kept closed by the closed cover plate 202 which is symmetrically rotated and opened, the maximum opening angle of the closed cover plate 202 is kept to be ninety degrees by the limiting fixture block 204 when the closed cover plate is rotated and opened along the connecting rotating shaft 201, and at the moment, the extension guide rail 203 arranged on the inner side surface of the closed cover plate 202 and the corresponding horizontal guide rail 103 are positioned on the same straight line, therefore, the unit heating boxes 4 inside the closed drying bin 102 can horizontally slide along the horizontal guide rail 103 to the extension guide rail 203, so that the unit heating boxes 4 can be conveniently taken out in a sliding manner, or the unit heating boxes 4 can be conveniently placed in a sliding manner, the number of the unit heating boxes 4 can be conveniently adjusted as required, and the use is more flexible and convenient.
As shown in fig. 1, 2, 3, 4, 5, 6 and 11, preferably, a plurality of horizontal air distribution plates 3 are horizontally and uniformly arranged at the lower side of the closed drying bin 102, the upper surfaces of the horizontal air distribution plates 3 are parallel to the horizontal central line of the closed drying bin 102, a conical air distribution pipe 301 is connected and arranged below the horizontal air distribution plates 3, a plurality of vertical air exhaust holes 302 are uniformly arranged in the middle of the horizontal air distribution plates 3 in a penetrating manner, the conical air distribution pipe 301 is communicated with the closed drying bin 102 through the vertical air exhaust holes 302, a plurality of horizontal air inlets 303 are horizontally and uniformly arranged at the left and right sides of the closed drying bin 102, a horizontal fan 304 is arranged in the middle of the horizontal air inlets 303, a backflow air pipe 305 is connected to the outer side of the horizontal air inlets 303, the conical air distribution pipe 301 is communicated with the horizontal air inlets 303 through the backflow air pipe 305, the device uses the closed drying bin 102 inside the horizontal drying bin 1 as a polyimide film drying space, the polyimide film can be horizontally conveyed and stretched along the closed drying bin 102, a plurality of electric heating pipes 506 are arranged in a unit heating box 4 arranged on the upper side of the closed drying bin 102 to heat and dry the polyimide film horizontally conveyed below, a plurality of horizontal air distribution plates 3 are evenly arranged on the lower side of the closed drying bin 102, a horizontal fan 304 can pump air in the horizontal drying bin 1 into a backflow air pipe 305 and convey the air to the horizontal air distribution plates 3 through a conical air distribution pipe 301, and then the air is vertically blown out upwards through vertical air exhaust holes 302 on the horizontal air distribution plates 3, so that circulating air flow from the center to two sides is formed inside the closed drying bin 102, the temperature of each position inside the closed drying bin 102 is kept uniform and constant more stably, and meanwhile, the air blown out vertically upwards through the vertical air exhaust holes 302 on the horizontal air distribution plates 3 can perform one-pass on the conveyed film The lifting of deciding, avoid the film to receive the effect of gravity tenesmus, it is inhomogeneous to lead to the heating that film and electric heating pipe 506 distance are inhomogeneous to cause, still be provided with temperature sensor in the middle of the 3 horizontal grid plates simultaneously, temperature sensor and the mutual electric connection of the horizontal fan 304 that corresponds 3 both sides of horizontal grid plates, can real time control horizontal fan 304 through temperature sensor data, in order to blow off the air current size through horizontal fan 304, adjust film and electric heating pipe 506 distance, and then be convenient for adjust according to actual temperature, be favorable to keeping the constancy of temperature of each position of film heating stoving.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 12, preferably, a plurality of side heating barrels 7 are further symmetrically and parallelly disposed on the left and right sides of the closed drying bin 102, the side heating barrels 7 are disposed below the horizontal guide rail 103 in parallel, a plurality of side heating barrels 7 are uniformly arranged along the horizontal center line direction of the closed drying bin 102, side electric heating tubes 704 are disposed in the middle of the side heating barrels 7, annular guide rails 701 are disposed at the front and rear ends of the side heating barrels 7, arc baffles 702 are symmetrically disposed at the upper and lower sides of the side heating barrels 7, the front and rear ends of the arc baffles 702 are slidably connected with the annular guide rails 701, arc racks 703 are disposed in the middle of the front and rear ends of the arc baffles 702, adjusting gears 705 are disposed in the middle of the upper and lower sides of the annular guide rails 701, the arc racks 703 are engaged with the adjusting gears 705, and adjusting motors 706 are disposed at the axial ends of the adjusting gears 705, the device uses a closed drying bin 102 in a horizontal drying box 1 as a drying space of a polyimide film, the polyimide film can be horizontally conveyed and stretched along the closed drying bin 102, a plurality of electric heating pipes 506 are arranged in a unit heating box 4 arranged at the upper side of the closed drying bin 102 to heat and dry the polyimide film horizontally conveyed below, a plurality of side heating cylinders 7 are symmetrically arranged at the left side and the right side of the closed drying bin 102 in parallel, and side electric heating pipes 704 arranged in the side heating cylinders 7 can heat the edges of the conveyed film to provide auxiliary heating in the edge direction, so that the temperature of the center and the temperature of the two sides of the closed drying bin 102 are prevented from being greatly deviated, the transverse temperature difference is adjusted and reduced, the drying and heating uniformity is improved, the heating temperature of the film is the same at all positions, and the imidization degree balance of the film is favorably maintained, further, the production quality of the polyimide film is improved, arc-shaped baffles 702 are symmetrically arranged on the side heating cylinder 7, the arc-shaped baffles 702 are positioned on one side close to the center of the closed drying bin 102 and can shield the side electric heating tubes 704, the adjusting motor 706 can drive the arc-shaped baffles 702 to slide along the annular guide rail 701 through the adjusting gear 705 and the arc-shaped rack 703, and therefore the side electric heating tubes 704 can be separated from each other when the upper arc-shaped baffle 702 and the lower arc-shaped baffle 702 are electrified or the side electric heating tubes 704 can be shielded by being folded with each other, the area of the inner side of the side electric heating tubes 704 which directly irradiate is adjusted, the heating degree and the temperature of the side electric heating tubes are adjusted, and the polyimide film is more convenient and flexible to use.
When the device is used, firstly, the device is connected with corresponding equipment and installed, then a polyimide film is horizontally conveyed into the closed drying bin 102 in the horizontal drying box 1 from the material inlet and outlet 101, the polyimide film can be horizontally conveyed and stretched along the closed drying bin 102, then the electric heating pipe 506 in the unit heating box 4 heats and dries the film horizontally conveyed below, the electric heating pipe 506 heats the film synchronously and also heats the horizontal detection pipe 6 below the electric heating pipe 506, the horizontal detection pipe 6 is filled with liquid such as alcohol and water, when the temperature of the liquid rises or falls, the liquid expands or contracts to push the lifting piston 604 in the vertical lifting pipe 603 to move up and down, when the temperature of the horizontal detection pipe 6 is higher, the lifting piston 604 and the lifting ejector rod 605 are pushed to move up, and further the suspension support frame 503 is driven to move up, so that the distance between the electric heating pipe 506 and the film is lengthened, when the temperature is lowered and the temperature of the horizontal detection tube 6 is lower, the lifting piston 604 and the lifting mandril 605 will move downwards to drive the suspension support frame 503 to move downwards, so that the distance between the electric heating tube 506 and the film is shortened, the temperature is raised to form an automatic dynamic adjusting mechanism, the suspension support frame 503 can move up and down to adjust the height, the heating adjustment of each position is carried out in a subarea way, the transverse temperature difference is adjusted and reduced, the drying and heating uniformity is improved, the heating temperature of each position of the film is the same, the imidization degree of each position of the film is maintained to be balanced, meanwhile, the fixed suspension frame 5 can horizontally slide, the density of the electric heating tube 506 at each position in the horizontal direction is adjusted according to the heating requirement, so as to achieve different heating temperature intervals, the central position and the drying and the heating temperature at both sides are kept constant, and simultaneously, the horizontal fan 304 pumps the air in the horizontal drying box 1 into the return air duct 305, the film is conveyed to the horizontal air distribution plate 3 through the conical air distribution pipe 301, and then is blown out vertically and upwards through the vertical air exhaust holes 302 on the horizontal air distribution plate 3, so that circulating air flow from the center to the two sides is formed inside the closed drying bin 102, the conveyed film is lifted to a certain degree through the vertical air flow, the film is prevented from falling and bending under the action of gravity, uneven heating caused by uneven distance between the film and the electric heating pipe 506 is caused, the edge of the conveyed film can be heated through the side electric heating pipe 704 arranged in the side heating cylinder 7, auxiliary heating in the edge direction is provided, large deviation between the temperature of the center and the temperature of the two sides of the closed drying bin 102 is avoided, the transverse temperature difference is reduced through adjustment, and the drying and heating uniformity is improved.
The use method of the uniform polyimide film drying device comprises the following steps:
a polyimide film is horizontally conveyed into a closed drying bin 102 in a horizontal drying box 1 from a material inlet and outlet 101, the polyimide film is horizontally conveyed and stretched along the closed drying bin 102, then an electric heating pipe 506 in a unit heating box 4 heats and dries the film horizontally conveyed below, the electric heating pipe 506 can also synchronously heat a horizontal detection pipe 6 below the electric heating pipe when heating the film, the liquid filled in the horizontal detection pipe 6 can expand or contract when the temperature rises or falls to push a lifting piston 604 in a vertical lifting pipe 603 to move up and down, when the temperature of the horizontal detection pipe 6 is higher, the lifting piston 604 and a lifting ejector rod 605 are pushed to move up, and then a suspension support frame 503 is driven to move up, so that the distance between the electric heating pipe 506 and the film is lengthened, and the temperature is reduced, when the temperature of the horizontal detection tube 6 is lower, the lifting piston 604 and the lifting top rod 605 move downwards to drive the suspension support frame 503 to move downwards, so that the distance between the electric heating tube 506 and the film is shortened, the temperature is raised to form an automatic dynamic adjusting mechanism, the suspension support frame 503 moves up and down to adjust the height, each position is subjected to zoned heating adjustment, the transverse temperature difference is adjusted and reduced, the drying and heating uniformity is improved, the heating temperature of each position of the film is the same, the imidization degree of each position of the film is kept balanced, meanwhile, the fixed suspension frame 5 can horizontally slide, the density of the electric heating tube 506 at each position in the horizontal direction is adjusted according to the heating requirement, so that different heating temperature intervals are achieved, and the drying and heating temperature of the central position and the two sides is kept constant.
The polyimide film uniform drying device provided by the invention takes the closed drying bin 102 in the horizontal drying bin 1 as the drying space of the polyimide film, the polyimide film can be horizontally conveyed and stretched along the closed drying bin 102, a plurality of electric heating pipes 506 are arranged in the unit heating box 4 arranged at the upper side of the closed drying bin 102 to heat and dry the polyimide film horizontally conveyed below, the electric heating pipes 506 are arranged on the suspension support 503, the suspension support 503 can move up and down to adjust the height, namely the distance between the electric heating pipes and the film below, so that the positions of the electric heating pipes 506 at all positions from the middle to two sides can be adjusted, the heating adjustment of each position is divided, the transverse temperature difference is adjusted and reduced, the drying and heating uniformity is improved, the heating temperature of all positions of the film is the same, and the equalization of the imidization degree of all positions of the film is favorably maintained, further improving the production quality of the polyimide film, the horizontal detection tube 6 is correspondingly arranged below each suspension support frame 503, the horizontal detection tube 6 is filled with liquid, the liquid expands or contracts when the temperature rises or falls, so that the lifting piston 604 in the vertical lifting tube 603 can be pushed to move up and down, when the temperature of the horizontal detection tube 6 is higher, the lifting piston 604 and the lifting ejector rod 605 are pushed to move up, so that the suspension support frame 503 is driven to move up, the distance between the electric heating tube 506 and the film is lengthened, the temperature is reduced, when the temperature of the horizontal detection tube 6 is lower, the lifting piston 604 and the lifting ejector rod 605 move down, so that the suspension support frame 503 is driven to move down, the distance between the electric heating tube 506 and the film is shortened, the temperature is increased, thereby forming an automatic dynamic adjusting mechanism, and being convenient for automatically controlling the heating temperature of each position, the drying uniformity is improved by keeping the temperature constant, and the drying device is more convenient and faster to use.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.