CN115972463B - Polyimide film tape casting production device and application method thereof - Google Patents
Polyimide film tape casting production device and application method thereof Download PDFInfo
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- CN115972463B CN115972463B CN202310268074.2A CN202310268074A CN115972463B CN 115972463 B CN115972463 B CN 115972463B CN 202310268074 A CN202310268074 A CN 202310268074A CN 115972463 B CN115972463 B CN 115972463B
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Abstract
The invention relates to the technical field of polyimide film production, in particular to a polyimide film tape casting production device and a use method thereof, wherein the polyimide film tape casting production device comprises a tape casting drying box, the front end of the tape casting drying box is provided with an output opening, and the polyimide film tape casting production device further comprises: the horizontal conveying frame is horizontally arranged in the casting drying box, and circulating conveying wheels are arranged at the front end and the rear end of the horizontal conveying frame. When the resin coated on the surface of the casting base band is conveyed, the upper side and the lower side of the casting drying box are respectively provided with a hot air drying structure for heating, an air inlet fan conveys hot air into the casting drying box for heating and drying the resin, meanwhile, the back surface of the casting base band is attached with a base band heating plate, and the casting base band can be heated through a central heating block and the base band heating plate, so that the surface of the polyimide film and the surface contacted with the base band are simultaneously heated and dried, the drying temperature is kept consistent, and the drying production quality of the polyimide film is improved.
Description
Technical Field
The invention relates to the technical field of polyimide film production, in particular to a polyimide film tape casting production device and a use method thereof.
Background
Polyimide is one of the organic polymer materials with the best comprehensive performance, and polyimide film is the most common material for preparing polyimide, when the polyimide film is produced, polyamide resin flows down from a hopper, is scraped and coated on a special base belt by a scraper with a certain thickness, is peeled off from the base belt after drying and solidification to form a film of green belt, and is peeled off and sent into a stretcher to finally imidize to form a film, and in the film forming production process, the most important is the drying process, and the drying temperature and stability determine the quality of the finally produced polyimide film.
The patent with the application number of CN202123092514.9 discloses a polyimide film drying device with high drying efficiency, which comprises a drying box, wherein conveying mechanisms are arranged at two sides in the drying box, conveying steel belts which correspondingly move from left to right are correspondingly arranged on the conveying mechanisms at two sides, and polyimide films formed by casting through a casting machine are arranged on the conveying steel belts; an upper air inlet is arranged on the left side of the upper end of the drying box. Still set up open space between the conveying steel band of upper and lower two-layer in the stoving incasement in this device, install the closed shell in the open space, the closed shell upper end sets up down the air inlet, and the lower air inlet is upwards aimed at conveying steel band, the combined design of blowing from top to bottom for drying efficiency greatly increased, polyimide film also peels off more easily, produces the quality and also correspondingly improves.
However, the existing polyimide film tape casting and drying production equipment is only provided with a hot air drying structure, when the polyimide film is conveyed and dried on a base band, hot air can only directly act on the surface of the polyimide film, only the surface of the polyamide film can be dried and heated, the polyimide film with a thinner thickness can also keep the drying temperature of the surface and the surface of the contact base band consistent, but the drying temperature of the surface of the polyimide film with a thicker thickness and the drying temperature of the surface of the contact base band can not be kept consistent, so that the drying efficiency of the outer side and the drying efficiency of the inner side are different, and further, the polyimide film is wrinkled easily, and the drying production quality of the polyimide film is affected.
Disclosure of Invention
Accordingly, the present invention is directed to a polyimide film casting and drying apparatus and a method for using the same, which solves the problems that the drying temperature of the polyimide film surface and the surface contacting the base band cannot be kept consistent and the drying production quality of the polyimide film is affected due to the hot air drying in the conventional polyimide film casting and drying production equipment.
Based on the above object, the present invention provides a polyimide film casting production device, which comprises a casting drying box, wherein the front end of the casting drying box is provided with an output opening, and the polyimide film casting production device is characterized by further comprising:
the horizontal conveying frame is horizontally arranged in the casting drying box, the front end and the rear end of the horizontal conveying frame are provided with circulating conveying wheels, the middle of each circulating conveying wheel is provided with a conveying motor, the outer side of each circulating conveying wheel is provided with a casting base band, and the casting base bands rotate through the circulating conveying wheels to drive the casting base bands to circularly surround the horizontal conveying frame;
the conveying hopper is arranged at the front end of the casting base band, a conveying opening is formed in the bottom of the conveying hopper, a film forming scraper is arranged at the rear side of the conveying hopper, and the film forming scraper and the casting base band are arranged in parallel;
the central heating blocks are arranged in the middle of the horizontal conveying frame, a plurality of central heating pipes are uniformly arranged along the horizontal center direction of the horizontal conveying frame, horizontal heating pipes are arranged in the middle of the central heating blocks, base band heating plates are symmetrically arranged on the upper side and the lower side of the central heating blocks, and the outer side surfaces of the base band heating plates are mutually attached to the inner side surfaces of the casting base bands;
the air inlet is arranged at the rear end of the upper side surface and the front end of the lower side surface of the curtain coating drying box, an air inlet fan is arranged in the middle of the air inlet, a heat exchange fin is arranged at the inner side of the air inlet fan, a hot air heating pipe is arranged in the middle of the heat exchange fin, air outlets are formed in the front end of the upper side surface and the rear end of the lower side surface of the curtain coating drying box, and an air exhaust fan is arranged in the middle of the air outlet;
the base band heating plate is connected with the embedded heat conducting grooves arranged on the central heating block in a sliding manner through the embedded heat conducting blocks, the embedded heat conducting blocks and the central heating block are mutually matched in size and mutually attached, and a buffer spring is arranged in the middle of the embedded heat conducting grooves;
the middle of the central heating block is horizontally provided with a horizontal heating sleeve, the horizontal heating pipes are nested and slidingly arranged on the inner side of the horizontal heating sleeve, the horizontal heating pipes are mutually attached and connected with the central heating block through the horizontal heating sleeve, the outer ends of the horizontal heating pipes are fixedly provided with synchronous adjusting frames, the outer sides of the synchronous adjusting frames are provided with horizontal racks, the outer sides of the horizontal racks are provided with translation gears in a meshed manner, and the middle of the translation gears is provided with a translation motor;
the surface of the outer side of the base band heating plate is uniformly provided with a plurality of lubrication holes, a conveying cavity is formed in the base band heating plate, a conveying hose is connected to the outer side of the conveying cavity, and the conveying hose is communicated with the lubrication holes through the conveying cavity;
the rear side of the baseband heating plate is provided with a lubrication scraping plate, the lubrication scraping plate is mutually attached to the inner side surface of the casting baseband, the middle of the lubrication scraping plate is provided with a lubrication diversion trench, the bottom of the lubrication diversion trench is connected with a circulation pipeline, the outer end of the circulation pipeline is connected with a lubrication storage bin, the middle of the lubrication storage bin is provided with a lubrication conveying pump, and the conveying hose is mutually connected with the lubrication storage bin through the lubrication conveying pump;
the outside of the air outlet is connected with a backflow pipeline, the front end of the upper side surface and the rear end of the lower side surface of the casting and drying box are respectively provided with an air outlet, the air outlets arranged at the front end of the upper side surface of the casting and drying box are mutually communicated with the air inlets arranged at the front end of the lower side surface of the casting and drying box through the backflow pipeline, and the air outlets arranged at the rear end of the lower side surface of the casting and drying box are mutually communicated with the air inlets arranged at the rear end of the upper side surface of the casting and drying box through the backflow pipeline;
the horizontal conveying frame is characterized in that horizontal circulating frames are arranged on the upper side and the lower side of the horizontal conveying frame in parallel, a plurality of circulating fans are uniformly distributed in the middle of the horizontal circulating frames, an adjusting rotating shaft is arranged in the middle of each circulating fan, each circulating fan is connected with the horizontal circulating frame in a rotating mode through the corresponding adjusting rotating shaft, the axial center line of the corresponding adjusting rotating shaft is perpendicular to the horizontal center line of the corresponding horizontal circulating frame, rotating shaft motors are arranged at the shaft ends of the corresponding adjusting rotating shafts, and the circulating fans on the upper side and the lower side of the corresponding horizontal conveying frame are reversely arranged.
Further, both ends all are provided with the regulation slider about the film forming scraper, the outside of regulation slider is provided with vertical support frame, the centre of vertical support frame is provided with vertical spout, the film forming scraper pass through the regulation slider with vertical spout sliding connection that vertical support frame set up, the vertical central line of vertical spout with the lateral surface mutually perpendicular of tape casting baseband, the centre of regulation slider is provided with the adjusting screw sleeve, the centre of vertical spout is provided with adjusting screw, the regulating screw passes through the adjusting screw sleeve with adjusting screw interconnect, adjusting screw's axle head is provided with accommodate motor.
Further, the middle level of film forming scraper is provided with horizontal spout, the middle gomphosis slip of horizontal spout is provided with the connection slider, the centre of connection slider is provided with locking knob, the front side symmetry of film forming scraper is provided with limit baffle, limit baffle with mutually perpendicular sets up between the film forming scraper, the vertical lift spout that is provided with in the middle of limit baffle's the rear end, limit baffle passes through the lift spout with connection slider sliding connection, limit baffle's front end is provided with the slope stock guide.
The application method of the polyimide film casting production device comprises the following steps:
the method comprises the steps of conveying and storing a certain amount of polyamide resin through a conveying hopper, conveying the polyamide resin to the surface of a casting base band below along a conveying opening at the bottom of the conveying hopper in the conveying hopper, circularly surrounding the casting base band around a horizontal conveying frame through circular conveying wheels, coating the polyamide resin on the casting base band through a film forming scraper in a certain thickness in a scraping mode, conveying the casting base band around the horizontal conveying frame, conveying air into a casting drying box through an air inlet fan in the conveying process, heating heat exchange fins on the inner side of the air inlet fan through a middle hot air heating pipe, heating the air into hot air after passing through the heat exchange fins, conveying the hot air to the inside of the casting drying box to heat and dry the resin on the casting base band, conveying the hot air along the casting drying box, discharging the hot air through an air outlet fan, attaching a base band on the back face of the casting base band, heating the base band through a horizontal heating pipe in a central heating block, heating the central heating block and the base band, heating the casting base band in a sliding mode with the base band, heating the polyimide film and drying the resin contacted with the casting base band, and drying the polyimide film, and the base band, and the film forming film and the film forming and drying the base band.
The invention has the beneficial effects that: from the above, it can be seen that the polyimide film casting production device provided by the invention is characterized in that the polyamic acid resin is conveyed to the casting base belt which is circularly surrounded by the horizontal conveying frame through the conveying hopper, then the casting base belt is coated on the casting base belt in a scraping manner by a film forming scraper with a certain thickness, then the casting base belt is conveyed around the horizontal conveying frame, in the conveying process, the upper side and the lower side of the casting drying box are both provided with hot air drying structures, hot air is conveyed into the casting drying box through the air inlet fan to heat and dry the resin, meanwhile, the back of the casting base belt is attached with the base belt heating plate, and the casting base belt can be heated through the central heating block and the base belt heating plate, so that the surface of the polyimide film and the surface of the contact base belt are heated and dried at the same time, the consistency of the drying temperature is maintained, the drying production quality of the polyimide film is improved, the resin is dried, solidified into a film and separated from the casting base belt, and the processing production is completed through the conveying opening.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a longitudinal cross-sectional structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the front side structure of an embodiment of the present invention;
FIG. 3 is a schematic view of a rear structure of an embodiment of the present invention;
fig. 4 is a schematic view showing a partial structure of a casting drying box according to an embodiment of the present invention;
FIG. 5 is a schematic view of a horizontal carrier according to an embodiment of the present invention;
FIG. 6 is a schematic view of the inside structure of a horizontal carrier according to an embodiment of the present invention;
FIG. 7 is a schematic view showing the internal structure of a central heating block according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a central heating block according to an embodiment of the present invention;
FIG. 9 is a schematic view of a base band heating plate according to an embodiment of the present invention;
FIG. 10 is a schematic view of a conveying hopper according to an embodiment of the present invention;
FIG. 11 is a schematic view showing a structure of a film forming blade according to an embodiment of the present invention
FIG. 12 is a schematic view of a limit stop according to an embodiment of the invention
Fig. 13 is a schematic structural view of a horizontal circulation frame according to an embodiment of the present invention.
Marked in the figure as:
1. a casting drying box; 101. an output opening; 102. an extension conveying roller; 103. a horizontal carriage; 104. circulation a conveying wheel; 105. a conveying motor; 106. casting a base band; 2. a conveying hopper; 201. a delivery opening; 202. a limit baffle; 203. tilting the stock guide; 204. lifting sliding grooves; 205. the connecting slide block; 206. a locking knob; 3. a film forming scraper; 301. a horizontal chute; 302. an adjusting slide block; 303. adjusting the screw sleeve; 304. a vertical support frame; 305. a vertical chute; 306. adjusting a screw; 307. adjusting a motor; 4. a central heating block; 401. embedding the heat conducting groove; 402. a horizontal heating jacket; 403. a horizontal heating pipe; 404. a synchronous adjusting frame; 405. a horizontal rack; 406. a translation gear; 407. a translation motor; 5. a base band heating plate; 501. embedding the heat conducting block; 502. a buffer spring; 503. a lubrication opening; 504. a conveying cavity; 505. a conveying hose; 6. a lubrication scraper; 601. a lubrication diversion trench; 602. a circulation pipe; 603. a lubrication storage bin; 604. a lubrication delivery pump; 7. an air inlet; 701. an air inlet fan; 702. a heat exchange fin; 703. a hot air heating pipe; 704. an air outlet; 705. an exhaust fan; 706. a return line; 8. a horizontal circulation rack; 801. a circulating fan; 802. adjusting the rotating shaft; 803. a rotating shaft motor.
Detailed Description
The present invention will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, a polyimide film casting production apparatus includes a casting and drying box 1, an output opening 101 is provided at a front end of the casting and drying box 1, and further includes:
the horizontal conveying frame 103 is horizontally arranged in the casting drying box 1, the front end and the rear end of the horizontal conveying frame 103 are provided with circulating conveying wheels 104, the middle of each circulating conveying wheel 104 is provided with a conveying motor 105, the outer side of each circulating conveying wheel 104 is provided with a casting baseband 106, and the casting baseband 106 is driven to circularly surround the horizontal conveying frame 103 through the rotation of the circulating conveying wheels 104;
a conveying hopper 2 arranged at the front end of the casting baseband 106, a conveying opening 201 is arranged at the bottom of the conveying hopper 2, a film forming scraper 3 is arranged at the rear side of the conveying hopper 2, and the film forming scraper 3 and the casting baseband 106 are arranged in parallel;
the center heating blocks 4 are arranged in the middle of the horizontal conveying frame 103, a plurality of center heating pipes 403 are uniformly arranged along the horizontal center direction of the horizontal conveying frame 103, the center heating blocks 4 are provided with horizontal heating pipes 403 in the middle, the upper side and the lower side of the center heating blocks 4 are symmetrically provided with base band heating plates 5, and the outer side surfaces of the base band heating plates 5 are mutually attached to the inner side surfaces of the casting base bands 106;
the air inlet 7 is arranged at the rear end of the upper side surface and the front end of the lower side surface of the casting and drying box 1, the air inlet 701 is arranged in the middle of the air inlet 7, the heat exchange fins 702 are arranged at the inner side of the air inlet 701, the hot air heating pipes 703 are arranged in the middle of the heat exchange fins 702, the air outlets 704 are arranged at the front end of the upper side surface and the rear end of the lower side surface of the casting and drying box 1, and the air exhaust fan 705 is arranged in the middle of the air outlets 704.
In the embodiment, the device conveys and stores a certain amount of the polyamide resin through the conveying hopper 2, then the polyamide resin in the conveying hopper 2 is conveyed to the surface of the lower casting base belt 106 along the conveying opening 201 at the bottom of the conveying hopper 2, the casting base belt 106 is circularly and circularly driven to surround the horizontal conveying frame 103 through the circulating conveying wheel 104, so that the polyamide resin is coated on the casting base belt 106 in a scraping manner with a certain thickness through the film forming scraper 3 arranged at the rear side of the conveying hopper 2, then the casting base belt 106 is conveyed around the horizontal conveying frame 103, in the conveying process, the upper side and the lower side of the casting drying box 1 are respectively provided with a hot air drying structure, air is conveyed into the casting drying box 1 through the air inlet fan 701, the heat exchange fins 702 at the inner side of the air inlet fan 701 are heated through the middle heating pipes 703, the air is heated into hot air after passing through the heat exchange fins 702, the hot air is conveyed into the inside the casting drying box 1, the resin on the casting baseband 106 is heated and dried, then hot air is conveyed along the casting drying box 1, and is discharged by an exhaust fan 705 of an air outlet 704, meanwhile, the back of the casting baseband 106 is attached with a baseband heating plate 5, the casting baseband 106 is made of heat conducting materials, the horizontal heating pipe 403 in the central heating block 4 can heat the central heating block 4 and the baseband heating plate 5, and further heat the casting baseband 106 which is mutually and slidably attached with the baseband heating plate 5, so that the resin contacted with the casting baseband 106 can be heated and dried, thereby the surface of the polyimide film and the surface contacted with the baseband are simultaneously heated and dried, so that the consistency of drying temperature is maintained, the drying production quality of the polyimide film is improved, the resin is dried and solidified into a film and is mutually separated from the casting baseband 106, the processing production is completed by guiding and conveying the extension conveying roller 102 arranged in an output opening 101, and the device is provided with a plurality of central heating blocks 4 and a baseband heating plate 5 so as to independently adjust the heating temperature of each position, and the device is more convenient and flexible in use.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, preferably, the upper and lower sides of the central heating block 4 are both provided with a jogged heat conducting groove 401, the inner side of the base band heating plate 5 is provided with a jogged heat conducting block 501, the base band heating plate 5 is connected with the jogged heat conducting groove 401 provided by the central heating block 4 in a sliding manner through the jogged heat conducting block 501, the jogged heat conducting block 501 and the central heating block 4 are matched in size and are mutually attached, the middle of the jogged heat conducting groove 401 is provided with a buffer spring 502, the middle of the central heating block 4 is horizontally provided with a horizontal heating sleeve 402, the horizontal heating pipe 403 is nested and slidingly arranged on the inner side of the horizontal heating sleeve 402, the horizontal heating pipe 403 is mutually attached and connected with the central heating block 4 through the horizontal heating sleeve 402, the outer end of the horizontal heating pipe 403 is fixedly provided with a synchronous adjusting frame 404, the outside of the synchronous adjusting frame 404 is provided with a horizontal rack 405, the outside of the horizontal rack 405 is meshed with a translation gear 406, the middle of the translation gear 406 is provided with a translation motor 407, the device heats the central heating block 4 and the baseband heating plate 5 through the horizontal heating pipe 403, and further heats the casting baseband 106 which is mutually in sliding fit with the baseband heating plate 5, thereby being capable of heating and drying the resin contacted with the casting baseband 106, simultaneously heating and drying the surface of the polyimide film and the surface contacted with the baseband, being convenient for maintaining the consistency of drying temperature, the baseband heating plate 5 and the central heating block 4 are in floating connection, the baseband heating plate 5 and the baseband heating plate 5 are mutually in sliding connection through the jogged heat conducting groove 401 which is arranged between the jogged heat conducting block 501 and the central heating block 4, simultaneously the baseband heating plate 5 and the casting baseband heating plate 106 can be pushed to be mutually in mutual fit through the buffer spring 502, the casting baseband 106 and the baseband heating plate 5 are mutually contacted and slid, avoid its to block, also be convenient for carry out heat conduction, and the baseband hot plate 5 of both sides about center heating piece 4 can heat simultaneously, center heating piece 4 then heats through horizontal heating pipe 403, and horizontal heating pipe 403 is connected through horizontal heating cover 402 and the mutual nested slip laminating of center heating piece 4, translation motor 407 can drive synchronous adjustment frame 404 translation through translation gear 406 and horizontal rack 405, and then drive all horizontal heating pipes 403 synchronous slip that connect on it through synchronous adjustment frame 404, with the length of adjusting horizontal heating pipe 403 and being located horizontal heating cover 402 inside, and then the area of contact between horizontal heating pipe 403 and the horizontal heating cover 402 is adjusted, thereby can carry out fast adjustment to the heating temperature, in order to adjust according to the production demand, more convenient and flexible during the use.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, preferably, the outer side surface of the base tape heating plate 5 is uniformly provided with a plurality of lubrication holes 503, the inside of the base tape heating plate 5 is provided with a conveying cavity 504, the outside of the conveying cavity 504 is connected with a conveying hose 505, the conveying hose 505 is communicated with the lubrication holes 503 through the conveying cavity 504, the rear side of the base tape heating plate 5 is provided with a lubrication scraper 6, the lubrication scraper 6 is mutually attached to the inner side surface of the casting base tape 106, the middle of the lubrication scraper 6 is provided with a lubrication guide groove 601, the bottom of the lubrication guide groove 601 is connected with a circulation pipeline 602, the outer end of the circulation pipeline 602 is connected with a lubrication storage bin 603, the middle of the lubrication storage bin 603 is provided with a lubrication conveying pump 604, the conveying hose 505 is mutually connected with the lubrication storage bin 603 through the lubrication pump 604, the device heats the center heating block 4 and the base band heating plate 5 through the horizontal heating pipe 403, and further heats the casting base band 106 which is mutually and slidably attached to the base band heating plate 5, so that the resin contacted with the casting base band 106 can be heated and dried, the polyimide film surface and the surface contacted with the base band are simultaneously heated and dried, so as to maintain the consistency of drying temperature, and the base band heating plate 5 and the casting base band 106 are mutually and slidably attached to each other, so that the heat conduction lubricating oil in the lubrication storage bin 603 can be conveyed to the conveying cavity 504 in the base band heating plate 5 through the lubrication conveying pump 604 and the conveying hose 505 and conveyed between the base band heating plate 5 and the casting base band 106 through the lubrication opening 503, so that the base band heating plate 5 and the casting base band 106 are lubricated, and smooth sliding and heat conduction of the base band heating plate 5 and the casting base band 106 are maintained, avoid baseband hot plate 5 and tape casting baseband 106 to produce wearing and tearing, be favorable to improving the stability of heating and the reliability of device, and baseband hot plate 5 is provided with lubricated scraper blade 6 around horizontal conveying frame 103 circulation movement, the rear side of baseband hot plate 5 can strike off the unnecessary heat conduction lubricating oil that baseband hot plate 5 back was stained with through lubricated scraper blade 6, avoid its drip overflow to cause the pollution, and the heat conduction lubricating oil of striking off flows back into lubricated storage bin 603 by circulation pipeline 602 after the collection of lubricated guiding gutter 601 to the circulation use heat conduction lubricating oil.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10 and fig. 13, preferably, a backflow pipeline 706 is connected and arranged at the outer side of the air outlet 704, the air outlet 704 is arranged at the front end of the upper side surface and the rear end of the lower side surface of the casting drying box 1, the air outlet 704 arranged at the front end of the upper side surface of the casting drying box 1 is mutually communicated with the air inlet 7 arranged at the front end of the lower side surface of the casting drying box 1 through the backflow pipeline 706, the air outlet 704 arranged at the rear end of the lower side surface of the casting drying box 1 is mutually communicated with the air inlet 7 arranged at the rear end of the upper side surface of the casting drying box 1 through the backflow pipeline 706, a horizontal circulating frame 8 is arranged at the upper side and lower side of the horizontal conveying frame 103 in parallel, a plurality of circulating fans 801 are uniformly arranged in the middle of the horizontal circulating frame 8, an adjusting rotating shaft 802 is arranged in the middle of the circulating fan 801, the circulating fan 801 is rotationally connected with the horizontal circulating frame 8 through the adjusting rotating shaft 802, the axial center line of the adjusting rotating shaft 802 is mutually perpendicular to the horizontal center line of the horizontal circulating frame 8, a rotating shaft motor 803 is arranged at the shaft end of the adjusting rotating shaft 802, the circulating fans 801 on the upper side and the lower side of the horizontal conveying frame 103 are reversely arranged, the device conveys scraped resin through the casting base band 106, in the conveying process, air is conveyed into the casting drying box 1 through the air inlet fan 701, the heat exchange fins 702 on the inner side of the air inlet fan 701 are heated through a middle hot air heating pipe 703, the air is heated into hot air after passing through the heat exchange fins 702, and is conveyed into the casting drying box 1 to heat and dry the resin on the casting base band 106, then the hot air is conveyed along the casting drying box 1 and is discharged through an air exhaust fan 705 of the air outlet 704, the air outlet 704 arranged at the front end of the upper side of the casting drying box 1 is mutually communicated with the air inlet 7 arranged at the front end of the lower side of the casting drying box 1 through the backflow pipeline 706, the air outlet 704 arranged at the rear end of the lower side of the casting drying box 1 is mutually communicated with the air inlet 7 arranged at the rear end of the upper side of the casting drying box 1 through the backflow pipeline 706, so that hot air with certain heat can be recovered, a circulating structure is formed, certain energy consumption is reduced, meanwhile, the horizontal circulating frame 8 is arranged in the casting drying box 1, a plurality of circulating fans 801 are uniformly distributed in the middle level of the horizontal circulating frame 8, hot air entering the inside of the casting drying box 1 can be conveyed along the horizontal direction through the circulating fans 801, so that the hot air can be in more full contact with the casting base belt 106, the hot air conveying direction of the upper side and the lower side is opposite to the conveying direction of the casting base belt 106, the circulating fans 801 can be driven by the rotating shaft motor 802 to rotate by the rotating adjusting angle, more hot air can be directly onto the casting base belt 106 when the circulating fans 801 are inclined downwards, the heating temperature is improved, and the heating is more convenient to be adjusted according to the requirement.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, preferably, the left and right ends of the film forming scraper 3 are all provided with an adjusting slide block 302, the outside of the adjusting slide block 302 is provided with a vertical supporting frame 304, the middle of the vertical supporting frame 304 is provided with a vertical sliding groove 305 arranged by the adjusting slide block 302 and the vertical supporting frame 304, the vertical center line of the vertical sliding groove 305 is mutually perpendicular to the outer side surface of the casting base belt 106, the middle of the adjusting slide block 302 is provided with an adjusting screw sleeve 303, the middle of the vertical sliding groove 305 is provided with an adjusting screw 306, the adjusting slide block 302 is mutually connected with the adjusting screw 306 through the adjusting screw sleeve 303, the shaft end of the adjusting screw 306 is provided with an adjusting motor 307, the device scrapes and coats resin on the casting base belt 106 with a certain thickness through the film forming scraper 3, the film forming scraper 3 is connected with the vertical sliding groove 305 arranged by the adjusting slide block 302, the adjusting motor 307 can drive the adjusting slide block 302 to move up and down along the vertical sliding groove 305 through the adjusting screw 306 and the adjusting screw sleeve 303, further the film forming scraper 3 moves up and down along the vertical sliding groove 305, the thickness of the film forming scraper 3 is further flexible, the film forming base belt is not convenient to produce the film, and the film is more flexible, and the film can be produced, and the film with the film can be more flexible, and has a thickness and has a better film thickness and a better film thickness.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11 and fig. 12, preferably, the middle level of the film forming scraper 3 is provided with a horizontal chute 301, the middle embedded sliding of the horizontal chute 301 is provided with a connecting slide block 205, the middle of the connecting slide block 205 is provided with a locking knob 206, the front side of the film forming scraper 3 is symmetrically provided with a limit baffle 202, the limit baffle 202 and the film forming scraper 3 are mutually perpendicular, the middle of the rear end of the limit baffle 202 is vertically provided with a lifting chute 204, the limit baffle 202 is in sliding connection with the connecting slide block 205 through the lifting chute 204, the front end of the limit baffle 202 is provided with an inclined guide plate 203, the device scrapes and coats resin on the tape 106 with a certain thickness through the film forming scraper 3, the thickness of the produced polyimide film can be adjusted through moving the film forming scraper 3 up and down, two sides of the resin are limited through the limit baffle 202, the polyamide resin in the conveying hopper 2 is conveyed to the surface of the lower tape 106 along the conveying opening 201 at the bottom of the conveying hopper 2, the limit baffle 202 can be more convenient to connect the limit baffle 202 with the horizontal chute 202 through the inclined guide plate 203, the limit baffle 202, the width can be more flexible and the limit baffle can be more convenient to be connected with the horizontal chute 301, the limit baffle can be more convenient to produce the film, and the film can be more convenient to be more connected with the limit slide and more flexible film, and more difficult to be produced.
When in use, firstly, the device is regulated according to production requirements, the regulating motor 307 can drive the regulating slide block 302 to move up and down along the vertical chute 305 through the regulating screw 306 and the regulating screw sleeve 303, and then the film forming scraper 3 is driven to move up and down, so as to regulate the distance between the bottom edge of the film forming scraper 3 and the surface of the casting base belt 106, to produce polyimide films with required thickness, then the locking knob 206 is unscrewed, the limit baffle 202 is horizontally slid and regulated to a required distance, the locking knob 206 is screwed and locked, to produce polyimide films with required width, then resin is put into the conveying hopper 2, the polyamide acid resin in the conveying hopper 2 is conveyed to the surface of the casting base belt 106 below along the conveying opening 201 at the bottom of the conveying hopper 2, meanwhile, the conveying motor 105 drives the circulating conveying wheel 104 to rotate so as to drive the circulating conveying wheel 104 to circulate around the horizontal conveying frame 103, the resin is coated on the casting base band 106 by a film forming scraper 3 in a certain thickness in a scraping way, then the casting base band 106 is conveyed around a horizontal conveying frame 103, in the conveying process, air is conveyed into the casting drying box 1 by an air inlet fan 701, a heat exchange fin 702 at the inner side of the air inlet fan 701 is heated by a hot air heating pipe 703 in the middle, the air is heated into hot air after passing through the heat exchange fin 702, and is conveyed into the casting drying box 1 to heat and dry the resin on the casting base band 106, then the hot air is conveyed along the casting drying box 1, a plurality of circulating fans 801 enable the hot air entering the casting drying box 1 to be conveyed along the horizontal direction, so that the hot air is more fully contacted with the casting base band 106, and finally discharged by an air exhaust fan 705 of an air outlet 704, meanwhile, the back of the casting base band 106 is attached with a base band heating plate 5, the casting base band 106 is made of heat conducting material and passes through the horizontal heating pipe 403 in a central heating block 4, the heating center heating block 4 and the base band heating plate 5 are heated, and then the casting base band 106 which is mutually and slidably attached to the base band heating plate 5 is heated, so that resin contacted with the casting base band 106 is heated and dried, the surface of the polyimide film and the surface contacted with the base band are simultaneously heated and dried, the drying temperature is kept consistent, the drying production quality of the polyimide film is improved, the resin is dried, solidified into a film and separated from the casting base band 106, and the film is conveyed out from the output opening 101 to finish processing production.
The application method of the polyimide film casting production device comprises the following steps: the transfer hopper 2 is used for transferring and storing a certain amount of the polyamide resin, the polyamide resin in the transfer hopper 2 is transferred to the surface of the lower casting base belt 106 along the transfer opening 201 at the bottom of the transfer hopper 2, the casting base belt 106 is driven to circularly encircle around the horizontal transfer frame 103 by the rotation of the circulating transfer wheel 104, the polyamide resin is coated on the casting base belt 106 in a scraping and pressing mode through the film forming scraper 3 with a certain thickness, then the casting base belt 106 is transferred around the horizontal transfer frame 103, in the transfer process, the air inlet fan 701 is used for transferring air into the casting drying box 1, the heat exchange fins 702 at the inner side of the air inlet fan 701 are heated by the middle hot air heating pipe 703, the air is heated into hot air after passing through the heat exchange fins 702, the resin on the casting baseband 106 is heated and dried by conveying the resin into the casting drying box 1, then hot air is conveyed along the casting drying box 1 and is discharged by an exhaust fan 705 of an air outlet 704, meanwhile, the back of the casting baseband 106 is attached with a baseband heating plate 5, the casting baseband 106 which is attached with the baseband heating plate 5 in a sliding manner is heated by a horizontal heating pipe 403 in a central heating block 4, the central heating block 4 and the baseband heating plate 5 are heated, and then the resin contacted with the casting baseband 106 is heated and dried by heating, so that the polyimide film surface and the contact baseband surface are simultaneously heated and dried, then the resin is dried and solidified into a film and separated from the casting baseband 106, and the film is conveyed out from an output opening 101 to finish processing production.
According to the polyimide film casting production device provided by the invention, the polyamide resin is conveyed to the casting base belt 106 which circularly surrounds the horizontal conveying frame 103 through the conveying hopper 2, then the casting base belt 106 is coated on the casting base belt 106 through the film forming scraper 3 in a scraping and pressing mode with a certain thickness, then the casting base belt 106 is conveyed around the horizontal conveying frame 103, in the conveying process, the upper side and the lower side of the casting drying box 1 are respectively provided with a hot air drying structure, hot air is conveyed into the casting drying box 1 through the air inlet fan 701 to heat and dry the resin, meanwhile, the back surface of the casting base belt 106 is attached with the base belt heating plate 5, and the casting base belt 106 can be heated through the central heating block 4 and the base belt heating plate 5, so that the surface of the polyimide film and the surface of the contact base belt are heated and dried at the same time, the consistency of the drying temperature is maintained, the drying production quality of the polyimide film is improved, the resin is dried and solidified into films and separated from the casting base belt 106, and the processing production is finished through the conveying of the output opening 101.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the invention (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the 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 omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.
Claims (4)
1. The utility model provides a polyimide film tape casting apparatus for producing, including tape casting stoving case (1), the front end of tape casting stoving case (1) is provided with output opening (101), its characterized in that still includes:
the horizontal conveying frame (103) is horizontally arranged in the casting drying box (1), circulating conveying wheels (104) are arranged at the front end and the rear end of the horizontal conveying frame (103), a conveying motor (105) is arranged in the middle of the circulating conveying wheels (104), a casting baseband (106) is arranged on the outer side of the circulating conveying wheels (104), and the casting baseband (106) rotates and drives to circularly encircle the horizontal conveying frame (103) through the circulating conveying wheels (104);
the conveying hopper (2) is arranged at the front end of the casting baseband (106), a conveying opening (201) is formed in the bottom of the conveying hopper (2), a film forming scraper (3) is arranged at the rear side of the conveying hopper (2), and the film forming scraper (3) and the casting baseband (106) are arranged in parallel;
the center heating blocks (4) are arranged in the middle of the horizontal conveying frame (103), a plurality of center heating pipes (403) are uniformly arranged in the horizontal center direction of the horizontal conveying frame (103), the center of each center heating block (4) is provided with a horizontal heating pipe, the upper side and the lower side of each center heating block (4) are symmetrically provided with a base band heating plate (5), and the outer side faces of the base band heating plates (5) are mutually attached to the inner side faces of the casting base bands (106);
the air inlet (7) is formed in the rear end of the upper side face and the front end of the lower side face of the casting drying box (1), an air inlet fan (701) is arranged in the middle of the air inlet (7), a heat exchange fin (702) is arranged on the inner side of the air inlet fan (701), a hot air heating pipe (703) is arranged in the middle of the heat exchange fin (702), air outlets (704) are formed in the front end of the upper side face and the rear end of the lower side face of the casting drying box (1), and an air exhaust fan (705) is arranged in the middle of the air outlets (704);
the base band heating device is characterized in that the upper side surface and the lower side surface of the central heating block (4) are respectively provided with a jogged heat conducting groove (401), the inner side surface of the base band heating plate (5) is provided with a jogged heat conducting block (501), the base band heating plate (5) is connected with the jogged heat conducting grooves (401) arranged on the central heating block (4) in a sliding mode through the jogged heat conducting blocks (501), the jogged heat conducting blocks (501) and the central heating block (4) are mutually matched in size and are mutually attached, and a buffer spring (502) is arranged in the middle of each jogged heat conducting groove (401);
the middle of the central heating block (4) is horizontally provided with a horizontal heating sleeve (402), the horizontal heating pipe (403) is nested and slidingly arranged on the inner side of the horizontal heating sleeve (402), the horizontal heating pipe (403) is mutually attached and connected with the central heating block (4) through the horizontal heating sleeve (402), the outer end of the horizontal heating pipe (403) is fixedly provided with a synchronous adjusting frame (404), the outer side of the synchronous adjusting frame (404) is provided with a horizontal rack (405), the outer side of the horizontal rack (405) is provided with a translation gear (406) in a meshed mode, and the middle of the translation gear (406) is provided with a translation motor (407);
the base band heating plate (5) is characterized in that a plurality of lubrication holes (503) are uniformly formed in the outer side surface of the base band heating plate (5), a conveying cavity (504) is formed in the base band heating plate (5), a conveying hose (505) is connected to the outer side of the conveying cavity (504), and the conveying hose (505) is communicated with the lubrication holes (503) through the conveying cavity (504);
the back side of baseband hot plate (5) is provided with lubrication scraper blade (6), lubrication scraper blade (6) with the medial surface of curtain coating baseband (106) laminating each other, the centre of lubrication scraper blade (6) is provided with lubrication guiding gutter (601), the bottom connection of lubrication guiding gutter (601) is provided with circulation pipeline (602), the outer end connection of circulation pipeline (602) is provided with lubrication storage storehouse (603), the centre of lubrication storage storehouse (603) is provided with lubrication delivery pump (604), delivery hose (505) through lubrication delivery pump (604) with lubrication storage storehouse (603) interconnect;
the outside connection of air outlet (704) is provided with backflow pipeline (706), upper side front end and downside rear end of casting stoving case (1) all are provided with air outlet (704), air outlet (704) that upper side front end set up of casting stoving case (1) are through backflow pipeline (706) with air intake (7) that downside front end set up of casting stoving case (1) are intercommunication each other, air outlet (704) that downside rear end set up of casting stoving case (1) are through backflow pipeline (706) with air intake (7) that upside rear end set up of casting stoving case (1) are intercommunication each other;
the horizontal conveying frame is characterized in that horizontal circulating frames (8) are arranged on the upper side and the lower side of the horizontal conveying frame (103) in parallel, a plurality of circulating fans (801) are uniformly distributed in the middle of the horizontal circulating frames (8), an adjusting rotating shaft (802) is arranged in the middle of each circulating fan (801), each circulating fan (801) is rotatably connected with the corresponding horizontal circulating frame (8) through the corresponding adjusting rotating shaft (802), the axial center line of each adjusting rotating shaft (802) is mutually perpendicular to the horizontal center line of each horizontal circulating frame (8), rotating shaft motors (803) are arranged at the shaft ends of the corresponding adjusting rotating shafts (802), and the circulating fans (801) on the upper side and the lower side of each horizontal conveying frame (103) are reversely arranged.
2. The polyimide film casting production device according to claim 1, wherein the left end and the right end of the film forming scraper (3) are respectively provided with an adjusting slide block (302), the outer side of the adjusting slide block (302) is provided with a vertical supporting frame (304), the middle of the vertical supporting frame (304) is provided with a vertical sliding groove (305), the film forming scraper (3) is in sliding connection with the vertical sliding groove (305) arranged on the vertical supporting frame (304) through the adjusting slide block (302), the vertical center line of the vertical sliding groove (305) is mutually perpendicular to the outer side surface of the casting base belt (106), the middle of the adjusting slide block (302) is provided with an adjusting screw sleeve (303), the middle of the vertical sliding groove (305) is provided with an adjusting screw (306), the adjusting slide block (302) is mutually connected with the adjusting screw (306), and the shaft end of the adjusting screw (306) is provided with an adjusting motor (307).
3. The polyimide film casting production device according to claim 1, wherein a horizontal chute (301) is horizontally arranged in the middle of the film forming scraper (3), a connecting sliding block (205) is arranged in the middle of the horizontal chute (301) in a jogged sliding manner, a locking knob (206) is arranged in the middle of the connecting sliding block (205), limit baffles (202) are symmetrically arranged on the front side of the film forming scraper (3), the limit baffles (202) are mutually perpendicular to the film forming scraper (3), a lifting chute (204) is vertically arranged in the middle of the rear end of the limit baffles (202), the limit baffles (202) are in sliding connection with the connecting sliding block (205) through the lifting chute (204), and an inclined guide plate (203) is arranged at the front end of the limit baffles (202).
4. A method of using the polyimide film casting apparatus according to any one of claims 1 to 3, comprising the steps of:
the method comprises the steps of conveying and storing a certain amount of polyamide resin through a conveying hopper (2), conveying the polyamide resin in the conveying hopper (2) to the surface of a tape casting base band (106) below along a conveying opening (201) at the bottom of the conveying hopper (2), circularly surrounding a horizontal conveying frame (103) through a circulating conveying wheel (104) in a rotating driving mode, scraping and coating the polyamide resin on the tape casting base band (106) through a film forming scraper (3) at a certain thickness, conveying the tape casting base band (106) around the horizontal conveying frame (103), conveying air into a tape casting drying box (1) through an air inlet fan (701) in the conveying process, heating a heat exchange fin (702) at the inner side of the air inlet fan (701) through a middle heating pipe (703), heating the air into hot air after passing through the heat exchange fin (702), conveying the tape casting base band (106) to the inside the tape casting drying box (1) to heat the resin on the tape casting base band (106), conveying the hot air along the tape casting base band drying box (1), discharging the hot air through an air outlet fan (705) at a certain thickness, discharging the air outlet fan (705) to the tape casting base band (106) around the horizontal conveying frame (103), heating a base band (5), and simultaneously heating a base band (5) in a heating plate (5) in a sliding mode, and a heating center (4), thereby heating and drying the resin contacted with the casting base band (106), so that the polyimide film surface and the surface contacted with the base band are simultaneously heated and dried, then the resin is dried and solidified into a film and separated from the casting base band (106), and the film is conveyed out from the output opening (101) to finish processing production.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310268074.2A CN115972463B (en) | 2023-03-20 | 2023-03-20 | Polyimide film tape casting production device and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310268074.2A CN115972463B (en) | 2023-03-20 | 2023-03-20 | Polyimide film tape casting production device and application method thereof |
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| CN115972463B true CN115972463B (en) | 2023-06-16 |
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|---|---|---|---|---|
| EP0260674A2 (en) * | 1986-09-19 | 1988-03-23 | E.I. Du Pont De Nemours And Company | Free surface casting method |
| US5147966A (en) * | 1990-07-31 | 1992-09-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Polyimide molding powder, coating, adhesive and matrix resin |
| CN211030919U (en) * | 2019-11-22 | 2020-07-17 | 浙江德龙科技有限公司 | Air inlet circulation assembly of casting machine |
| CN217169359U (en) * | 2021-12-24 | 2022-08-12 | 浙江中科玖源新材料有限公司 | Oven for uniformly curing polyimide film |
| CN217196564U (en) * | 2022-03-18 | 2022-08-16 | 营口福昌塑料制品有限公司 | Casting machine with dry unloading mechanism for plastic bag production |
| CN115534190A (en) * | 2022-11-30 | 2022-12-30 | 山东欧亚高分子材料有限公司 | Uniform polyimide film drying device and using method thereof |
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2023
- 2023-03-20 CN CN202310268074.2A patent/CN115972463B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0260674A2 (en) * | 1986-09-19 | 1988-03-23 | E.I. Du Pont De Nemours And Company | Free surface casting method |
| US5147966A (en) * | 1990-07-31 | 1992-09-15 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Polyimide molding powder, coating, adhesive and matrix resin |
| CN211030919U (en) * | 2019-11-22 | 2020-07-17 | 浙江德龙科技有限公司 | Air inlet circulation assembly of casting machine |
| CN217169359U (en) * | 2021-12-24 | 2022-08-12 | 浙江中科玖源新材料有限公司 | Oven for uniformly curing polyimide film |
| CN217196564U (en) * | 2022-03-18 | 2022-08-16 | 营口福昌塑料制品有限公司 | Casting machine with dry unloading mechanism for plastic bag production |
| CN115534190A (en) * | 2022-11-30 | 2022-12-30 | 山东欧亚高分子材料有限公司 | Uniform polyimide film drying device and using method thereof |
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| CN115972463A (en) | 2023-04-18 |
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