U-shaped film making machine

Abstract

The utility model relates to the technical field of film making machines, in particular to a U-shaped film making machine which is sequentially provided with an unwinding station, a film making station, a drying station and a winding station in the conveying direction of a bottom film, the drying station comprises a drying oven, an air inlet assembly and an air exhaust piece, the air inlet assembly and the air exhaust piece are connected with the drying oven, and a drying area is arranged in the drying oven. An area partition plate for dividing the drying area into an upper drying area and a lower drying area in the vertical direction is horizontally arranged in the drying area, the upper end face and the lower end face of the area partition plate are each provided with a plurality of carrier rollers for conveying a bottom film, and the top and the bottom of the drying area are each provided with an air outlet communicated with the air inlet assembly; the drying device has the advantages of being high in space utilization rate, small in occupied area and high in drying efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of film making machines, in particular to a U-shaped film making machine. Background Art

[0002] Oral film is a kind of oral drug preparation. When taking the medicine, the film is placed on the surface of the tongue or under the tongue. Within 10 to 60 seconds, the entire film is completely absorbed by the capillaries or dissolved in the saliva and swallowed. The medication process can be completed quickly without drinking water.

[0003] At present, the preparation of oral film is completed by oral film film making machine. After the pre-treated material liquid enters the film making machine, the film making station makes the material into a uniform film and coats it on the base film, which is then rolled into a finished dry film after multiple drying processes. The applicant has previously applied for a utility model with patent number CN218833173U, which discloses an oral film film making machine, which is provided with an unwinding station for conveying the base film, and a film making station, a drying station, and a winding station for coating the material on the base film are arranged in sequence along the conveying direction of the base film, wherein the drying station includes an upper box body that can be turned over on the frame, a lower box body that is located below the upper box body and fixedly connected to the frame, and a lower box body that is connected to the upper box body. A heater connected to the body and a fan connected to the heater, the lower end surface of the upper box is provided with an air outlet, the upper end surface of the lower box is provided with an exhaust panel opposite to the air outlet, the exhaust panel is provided with rollers for conveying the bottom film, the upper box comprises an oven, an oven cover detachably connected to the oven, a high-efficiency filter and an air distribution plate are provided in the oven, the air distribution plate is arranged between the high-efficiency filter and the oven cover, an air inlet is provided on the oven cover, the air inlet and the heater are connected by a pipe, a suspension for mounting the lower box is provided on the frame, an exhaust duct communicated with the lower box is provided under the suspension, and the film making machine is provided with a first drying station and a second drying station arranged side by side.

[0004] The above-mentioned film-making machine has the following shortcomings during actual use: 1. The first drying station and the second drying station are arranged side by side, and the efficiency of drying the medicine film is too low; 2. When the hot air is blown from the air outlet of the upper box to the lower box, due to the lack of a structure to guide the hot air, the hot air scatters and causes heat loss, further reducing the drying efficiency and energy utilization rate; 3. A high-efficiency filter is installed in the upper box, and a medium-efficiency filter is also connected to the heater. Two filtrations are set, resulting in the wind force blowing to the lower box being too low, thereby affecting the drying efficiency; 4. The two drying stations are distributed side by side, which increases the length of the whole machine, occupies too large an area, and has low space utilization inside the equipment. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a U-shaped film making machine to effectively improve the drying efficiency in view of the deficiencies of the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a U-shaped film making machine, comprising a frame, a unwinding station for conveying a base film is provided on the frame, and a film making station for coating materials on the base film, a drying station and a winding station are sequentially provided along the conveying direction of the base film, characterized in that: the drying station comprises an oven, an air inlet assembly and an exhaust member connected to the oven, a drying zone is provided inside the oven, a detachable zone dividing plate is horizontally arranged in the drying zone, the zone dividing plate divides the drying zone into an upper drying zone and a lower drying zone in a vertical direction, one end of the upper drying zone is a first input end, and the other end is a first output end, one end of the lower drying zone is a second input end, and the other end is a second output end, the first input end and the second output end are located on the same side, the upper end surface and the lower end surface of the zone dividing plate are both provided with a plurality of rollers for conveying the base film, and the top and the bottom of the mounting cavity are both provided with air outlets communicated with the air inlet assembly.

[0007] The utility model with the above-mentioned characteristics: the upper drying area and the lower drying area are equivalent to the first drying station and the second drying station, which are arranged up and down to form two drying areas for drying, with high space utilization and small equipment footprint; the base film enters the first installation cavity from the first base film input end, passes through the first base film output end and then enters the second installation cavity through the second base film input end, the base film material path is U-shaped, and the hot air in the two chambers is superimposed, which improves the drying efficiency.

[0008] A further configuration of the utility model is that two air supply chambers are further provided in the oven, and the two air supply chambers are respectively arranged above and below the drying area; an air inlet pipe connected to the air supply chamber is provided on the outer peripheral surface of the box body; two arc-shaped baffles are provided in the air supply chamber, and the arc-shaped baffles are arranged along the length direction of the box body, one end of which is connected to the side wall of the air supply chamber, and the other end is connected to the air outlet; an arc-shaped guide channel for guiding the dry hot air from the air inlet pipe to the air outlet is formed between the two arc-shaped baffles.

[0009] The utility model with the above characteristics: by arranging an arc baffle in the air supply chamber for conveying dry hot air, the arc guide channel formed by the two arc baffles can guide the direction of the dry hot air, prevent heat loss caused by airflow dispersion, and further improve the drying efficiency.

[0010] A further configuration of the utility model is that a plurality of evenly distributed air inlet holes are provided on the cavity wall of the air supply cavity, and the air inlet holes are communicated with the air inlet pipe.

[0011] The utility model with the above characteristics: the air supply pipe and the air supply cavity are connected by arranging the air supply hole.

[0012] A further configuration of the utility model is that a window for taking out the area dividing plate is provided on one side surface of the oven, and at least two supporting members are provided on the lower end surface of the area dividing plate, and the two supporting members are respectively arranged at both ends of the length direction of the area dividing plate, and the supporting member is L-shaped, one side surface of which is connected to the area dividing plate, and the other side surface is connected to the cavity wall of the drying zone.

[0013] The utility model with the above-mentioned characteristics: in order to ensure that the hot air delivered from the air outlet can be utilized on the bottom film to the maximum extent, the distance between the air outlet and the roller is small, which is not conducive to the installation of the roller on the area dividing plate after being connected to the oven. By setting the area dividing plate to be detachably connected to the oven, it is convenient to independently install the roller on the area dividing plate, and then install the area dividing plate into the oven, which is convenient for assembly and subsequent maintenance.

[0014] A further arrangement of the utility model is: the air inlet assembly is arranged at the back of the frame, including a fan and a heating filter box, the heating filter box includes an upper box body with a filtering function and a lower box body with a heating function, one side of the lower box body is provided with a first connecting pipe connected to the fan, and the other side is provided with a second connecting pipe, one side of the upper box body is provided with a third connecting pipe that can be connected to the second connecting pipe through a pipeline, and the other side is provided with a fourth connecting pipe connected to the oven.

[0015] The utility model with the above characteristics: the wind in the fan is first heated and then filtered, and finally transported to the oven, so that the hot air after treatment meets the laboratory use standards; the filtering function and the heating function are integrated in the heating filter box, which is different from the heater and the medium-efficiency filter that are separately arranged in the prior art, and can effectively improve the assembly efficiency and make the layout on the back of the frame neater and clearer; only the filtering device is arranged in the air inlet component, and the filtering device in the oven is eliminated, so as to reduce the hot air loss, ensure that the air volume blown to the bottom film is large enough, and improve the drying efficiency.

[0016] The utility model is further configured as follows: a drying buffer zone is further provided in the oven, the drying buffer zone is located at the side of the drying zone, two exhaust passages are provided on the cavity wall of the drying buffer zone, the two exhaust passages are respectively connected to the upper drying zone and the lower drying zone, an exhaust pipe connected to the drying buffer zone is provided on the outer peripheral surface of the oven, and the exhaust pipe is connected to the exhaust member.

[0017] The utility model with the above characteristics: by setting an exhaust channel, the solvent gas such as ethanol, ethyl acetate, water vapor and the like generated during drying in the drying zone can be discharged in time, so that the dry hot air can better contact the material film on the surface of the bottom film, thereby improving the drying efficiency, and can reduce the surface temperature of the oven and improve safety; by setting a drying buffer zone, it is used to guide the circulation direction of the dry hot air. At the same time, since the temperature settings of the upper drying zone and the lower drying zone are different, a buffer zone, namely the drying buffer zone, is required.

[0018] A further configuration of the utility model is that: a plurality of evenly distributed strip-shaped air outlet grilles are provided on the air outlet.

[0019] The utility model with the above characteristics: by arranging a plurality of uniformly distributed strip-shaped air outlet grilles on the air outlet, the hot air is divided into a plurality of uniform heat flows, and the heat flows are evenly blown to the bottom film, thereby ensuring the drying quality.

[0020] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of an embodiment of the utility model.

[0022] Figure 2 It is a rear view of an embodiment of the utility model.

[0023] Figure 3 It is a structural schematic diagram of a drying station in an embodiment of the utility model.

[0024] Figure 4 It is a schematic structural diagram of an oven according to an embodiment of the utility model.

[0025] Figure 5 It is a schematic structural diagram of the area dividing plate and the rollers according to an embodiment of the utility model.

[0026] Figure 6 It is a cross-sectional view of an oven according to an embodiment of the present utility model.

[0027] Figure 7 This is a front view of a heating filter box according to an embodiment of the utility model.

[0028] Figure 8 This is a schematic structural diagram of a heating filter box according to an embodiment of the utility model. Implementation

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0030] like Figure 1-8 The U-shaped film making machine shown in the figure comprises a frame g, on which is provided an unwinding station a for conveying a base film, and along the conveying direction of the base film, there are sequentially provided a film making station b for coating the material on the base film, a drying station c, a composite film unwinding station d, a composite station e and a winding station f.

[0031] The drying station c comprises an oven 1, an air inlet assembly and an exhaust member 15 connected to the oven 1, a drying zone 11 is arranged inside the oven 1, a detachable zone partition plate 2 is horizontally arranged in the drying zone 11, and the zone partition plate 2 divides the drying zone 11 into an upper drying zone 111 and a lower drying zone 112 in a vertical direction, a drying buffer zone 12 is also arranged in the oven 1, the drying buffer zone 12 is located on the side of the drying zone 11, two exhaust channels 121 are arranged on the cavity wall of the drying buffer zone 12, and the two exhaust channels 121 are respectively connected to the upper drying zone 111 and the lower drying zone 112, an exhaust pipe 3 connected to the drying buffer zone 12 is arranged on the outer peripheral surface of the oven 1, and the exhaust pipe 3 is connected to the exhaust member 15. In the present embodiment, the exhaust member 15 is a fan, one end of the upper drying zone 111 is a first input end 1111, and the other end is a first output end 1112, and the lower drying zone 112 is connected to the upper drying zone 111. One end of the drying zone 112 is a second input end 1121, and the other end is a second output end 1122. The first input end 1111 and the second output end 1122 are located on the same side. An input slot 1113 for bottom film input is provided at the first input end 1111. An exhaust passage 121 communicated with the upper drying zone 111 can be used for bottom film output at the same time. The exhaust passage 121 communicated with the lower drying zone 112 can be used for bottom film input. An output slot 1123 for bottom film output is provided at the second input end 1121. A plurality of roller frames 4 for conveying bottom film distributed along the length direction of the regional dividing plate 2 are provided on the upper end face and the lower end face. Rollers 5 are installed on the roller frames 4. The bottom film is U-shaped in the oven. Air outlets 6 for conveying hot air are provided at the top and the bottom of the drying zone 11. A plurality of evenly distributed strip air outlet grilles 61 are provided on the air outlet 6.

[0032] Two air supply chambers 13 are further provided in the oven 1. The two air supply chambers 13 are respectively arranged above and below the drying area 11. An air inlet pipe 7 connected to the air supply chamber 13 is provided on the outer peripheral surface of the box body 1. Two arc-shaped baffles 8 are provided in the air supply chamber 13. The arc-shaped baffles 8 are arranged along the length direction of the box body 1, one end of which is connected to the cavity wall of the air supply chamber 13, and the other end is connected to the air outlet 6. A number of evenly distributed air supply holes 131 are provided on the cavity wall of the air supply chamber 13. The air supply holes 131 are connected to the air inlet pipe 7. An arc-shaped guide channel 81 for guiding hot air from the air inlet pipe 7 to the air outlet 6 is formed between the two arc-shaped baffles 8.

[0033] A window 14 for taking out the area dividing plate 2 is provided on one side surface of the oven 1, and at least two supporting members 9 are provided on the lower end surface of the area dividing plate 2. In the present embodiment, four supporting members 9 are provided, which are arranged in pairs at both ends of the length direction of the area dividing plate 2. The supporting member 9 is L-shaped, one side of which is connected to the area dividing plate 2, and the other side is connected to the cavity wall of the drying zone 11.

[0034] The air inlet assembly 10 is arranged on the back of the frame g, including a fan 101 and a heating filter box 102. The heating filter box 102 includes an upper box body 1021 with a filtering function and a lower box body 1022 with a heating function. One side of the lower box body 1022 is provided with a first connecting pipe 1023 connected to the fan 101, and the other side is provided with a second connecting pipe 1024. One side of the upper box body 1021 is provided with a third connecting pipe 1025 that can be connected to the second connecting pipe 1024 through a pipeline, and the other side is provided with a fourth connecting pipe 1026 connected to the air inlet pipe 7.

[0035] In the actual production process, the base film is transported from the unwinding station to the film making station, drying station, compounding device and winding station in sequence. The material enters the film making station from the material trough and is coated on the base film under the processing of the film making station. The base film coated with the material enters the drying station. The base film moves in a U-shape in the oven. The hot air processed by the air supply component enters the oven through the air inlet pipe and is blown to the base film from the air outlet to dry it. The dried base film enters the compounding station. When it is necessary to compound the film on the material, the film material roll is placed on the compound film unwinding station. Under the processing of the compounding station, the upper film is compounded on the material. When compounding the film is not required, the base film directly enters the winding station.

Claims

1. A U-shaped film making machine, comprising a frame, wherein the frame is provided with an unwinding station for conveying a bottom film, and a film making station for coating a material on the bottom film, a drying station, and a winding station are sequentially provided along the conveying direction of the bottom film. Features: The drying station includes an oven, an air inlet assembly and an exhaust piece connected to the oven, a drying area is provided inside the oven, a detachable area dividing plate is horizontally arranged in the drying area, the area dividing plate divides the drying area into an upper drying area and a lower drying area in a vertical direction, one end of the upper drying area is a first input end, and the other end is a first output end, one end of the lower drying area is a second input end, and the other end is a second output end, the first input end and the second output end are located on the same side, the upper end surface and the lower end surface of the area dividing plate are provided with a plurality of rollers for conveying the bottom film, and the top and the bottom of the drying area are provided with air outlets connected to the air inlet assembly.

2. A U-shaped film making machine according to claim 1, Features: The oven is further provided with two air supply chambers, which are respectively arranged above and below the drying area. An air inlet pipe connected to the air supply chamber is provided on the outer peripheral surface of the oven. Two arc-shaped baffles are provided in the air supply chamber. The arc-shaped baffles are arranged along the length direction of the box body, one end of which is connected to the side wall of the air supply chamber, and the other end is connected to the air outlet. An arc-shaped guide channel for guiding the dry hot air from the air inlet pipe to the air outlet is formed between the two arc-shaped baffles.

3. A U-shaped film making machine according to claim 2, Features: A plurality of evenly distributed air inlet holes are arranged on the cavity wall of the air supply cavity, and the air inlet holes are communicated with the air inlet pipe.

4. A U-shaped film making machine according to claim 1 or 2, Features: A window for taking out the zone dividing plate is provided on one side surface of the oven, and at least two supporting members are provided on the lower end surface of the zone dividing plate. The two supporting members are respectively arranged at the two ends of the zone dividing plate in the length direction. The supporting member is L-shaped, one side surface of which is connected to the zone dividing plate, and the other side surface is connected to the cavity wall of the drying zone.

5. A U-shaped film making machine according to claim 1 or 2, Features: The air inlet assembly is arranged on the back of the frame, and includes a fan and a heating filter box. The heating filter box includes an upper box body with a filtering function and a lower box body with a heating function. One side of the lower box body is provided with a first connecting pipe connected to the fan, and the other side is provided with a second connecting pipe. One side of the upper box body is provided with a third connecting pipe that can be connected to the second connecting pipe through a pipeline, and the other side is provided with a fourth connecting pipe connected to the oven.

6. A U-shaped film making machine according to claim 1 or 2, Features: A drying buffer zone is also provided in the oven, and the drying buffer zone is located on the side of the drying zone. Two exhaust passages are provided on the cavity wall of the drying buffer zone, and the two exhaust passages are respectively connected to the upper drying zone and the lower drying zone. An exhaust pipe connected to the drying buffer zone is provided on the outer peripheral surface of the oven, and the exhaust pipe is connected to the exhaust member.

7. A U-shaped film making machine according to claim 1 or 2, Features: The air outlet is provided with a plurality of evenly distributed strip-shaped air outlet grilles.

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