Drying device

Abstract

To provide a highly practical and simple-structured drying device capable of further securing safety, remarkably alleviating the anxiety of a worker during maintenance work and preventing a substrate from being damaged during maintenance work.SOLUTION: There is provided a drying device comprising bodies aligned on left and right sides, the bodies each comprising a body upper part for letting a film-shaped substrate pass through via transfer doorways on left and right sides and a body lower part capable of ascending and descending relative to the body upper part. With the body lower part descending, maintenance work can be carried out. The drying device is configured to comprise a substrate protection support at the transfer doorways or a transfer guide therebetween for preventing a substrate from contacting the edge and the like resulting from descending or hanging-down when the body lower part descends.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a drying device that is provided in a coating device configured to transport a film-shaped object to be coated (substrate) toward a nozzle section that ejects a coating liquid from, for example, a slit-shaped tip discharge hole, and that dries the coating film on the surface of the substrate by transporting the film-shaped substrate after coating through a drying chamber section that has a main body section arranged side by side on the left and right and configured to be heated by hot air or a heater. [Background technology]

[0002] The drying device provided in the coating device transports and passes through the film-like substrate having its surface coated with the coating liquid by the coating device and discharged from the coating device, and dries the coating film on the substrate surface, for example, by hot air or heater heating.

[0003] Such a drying device is configured to comprise a drying chamber section in which multiple main body sections are arranged side by side on the left and right, through which a film-like substrate 2 is transported and passed via transport inlet / outlet sections provided on the left and right, and the opposing transport inlet / outlet sections of these main body sections are connected so as to communicate with each other to form a long drying chamber length. Within each main body section that constitutes this drying chamber section, for example, a number of support rollers are arranged side by side in the horizontal direction, and the film-like substrate is passed over these support rollers. While the film-like substrate is picked up and transported horizontally, the coated surface (coating film) of the substrate is dried using hot air from the hot air blowing section or heat from the heater section, or hot air blowing sections are provided above and below, and the substrate is transported and passed without contact, drying the coated surface (coating film) using a floating drying method.

[0004] In addition, in this type of drying device, each main body part is composed of an upper main body part (lid part) and a lower main body part (fixed main body part), and the upper lid part is raised to open the upper opening of the lower fixed main body part, making it easy to perform paper feeding operations for the film-like substrate and maintenance operations such as inspection, repair, and replacement of the support rollers, hot air blowing part, and hot air exhaust part.

[0005] However, for example, the lid part that can be moved upward to open the upper opening of the fixed main body part at the bottom, even if it is divided into multiple parts and installed side by side, is often heavy because it is equipped with a hot air blowing part and a heater part such as an IR heater to further increase the drying capacity, and since the worker must place his head under this lid part to perform paper threading work or maintenance work, there is a concern about the support strength of the lid part when it is raised to the opening work position. Therefore, a mechanism is required to engage and lock the raised lid part.

[0006] Furthermore, even if, for example, lifting cylinder devices are provided at the four corners of the fixed main body and a lifting guide mechanism that guides this lifting is provided on the frame to ensure support strength, the worker will still be concerned that the lifted lid will fall during work.

[0007] Therefore, in order to solve such problems, the applicant developed a drying device equipped with an open operation position locking mechanism on the frame and lid, which can engage and hold the lid raised relative to the fixed main body in the open operation position, thereby significantly increasing the holding strength. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2014-210228 A Summary of the Invention [Problem to be solved by the invention]

[0009] However, if the lid is lifted horizontally upward to open the upper opening of the fixed main body, this has the advantage that maintenance work can be performed from the rear as well, compared to a configuration in which the lid is opened by rotating it up and down using the rear side as a fulcrum. However, this requires a guide mechanism to lift the lid upward and a frame to accommodate this. In addition, the open operation position lock mechanism that engages and holds the lid in the raised open operation position must be provided in multiple places on the upper part of the frame, requiring additional height and making the structure complex and expensive.

[0010] The present invention has solved these further problems, and is configured to provide a drying device to be installed in an epoch-making coating device which is highly practical and which is capable of preventing damage to the substrate during maintenance work when the lower part of the main body is lowered by providing a support part for protecting the substrate, which prevents the substrate from coming into contact with the edge even if the substrate descends or sags when the lower part of the main body is lowered. The present invention aims to provide a drying device to be installed in an epoch-making coating device which is highly practical and which is capable of preventing damage to the substrate during maintenance work when the lower part of the main body is lowered by providing a support part for protecting the substrate, which prevents the substrate from coming into contact with the edge even if the substrate descends or sags when the lower part of the main body is lowered. [Means for solving the problem]

[0011] The gist of the present invention will now be described with reference to the accompanying drawings.

[0012] The present invention is a drying device in which a film-like substrate 2, which has been coated with a coating liquid by a coating device 1 and is delivered from the coating device 1, is transported and passed through a drying chamber 3, in which a hot air delivery section 4 for delivering hot air for drying the coating liquid applied to the substrate 2, or a heater section for drying the substrate 2, is provided. The drying chamber 3 is configured such that a plurality of main body sections 6 for transporting and passing the film-like substrate 2 through left and right transport inlet / outlet sections 5 are arranged side by side on the left and right, and the main body section 6 comprises an upper main body section 7 for transporting and passing the film-like substrate 2 through the left and right transport inlet / outlet sections 5, and a lower main body section 8 which is provided so as to be freely raised and lowered relative to the upper main body section 7 and which lowers to open the lower part of the upper main body section 7 and open the upper opening, and a plurality of support rollers for supporting the film-like substrate 2 are provided in a spanning state on the lower main body section 8, or a heater section for drying the substrate 2 while drying the substrate 2. The drying apparatus is configured such that the hot air blowing section 4 is supported without contact, and is provided with a lifting device 9 which raises and lowers the lower part 8 of the main body in the vertical direction, and by lowering the lower part of the main body 8 downward by the lifting device 9, the lower part of the upper part of the main body 7 opens, the upper opening of the lower part of the main body 8 opens, and the main body part 6 becomes open, allowing the film-like substrate 2 to be passed through or maintenance work on the support roller or the hot air blowing section 4 to be performed. A conveying guide section 10 is provided between the conveying entrance / exit sections 5 which face each other when the main body parts 6 are arranged side by side, and a substrate protection support section 11 is provided at the conveying entrance / exit section 5 or the conveying guide section 10 to prevent the substrate 2 from descending or hanging down and coming into contact with the edge when the lower part of the main body 8 is lowered.

[0013] The main body 6 relates to the drying device described in claim 1, characterized in that the upper body 7 and the lower body 8 are arranged on top of each other so that they can be freely separated vertically, and when the lower body 8 descends relative to the upper body 7, the lower part of the upper body 7 opens and the upper opening for maintenance work on the lower body 8 opens.

[0014] The drying device according to the present invention is characterized in that the substrate protection support portion 11 is configured to have a substrate protection curved support surface 12, which is a support surface against which the substrate 2 descends or hangs down and comes into contact when the lower portion of the main body 8 descends, and which is a support surface that hangs down and curves downward.

[0015] The drying device relates to the drying device described in claim 3, characterized in that the substrate protection support portion 11 is composed of a plate material against which the substrate 2 descends or hangs down and comes into contact when the lower part of the main body 8 descends, and a part of this plate material constitutes the curved substrate protection support surface 12, and at least this curved substrate protection support surface 12 with which the substrate 2 comes into contact is provided with a protective coating. Effect of the Invention

[0016] Since the present invention is configured as described above, the main body is composed of an upper main body and a lower main body that is arranged below the upper main body so that it can be raised and lowered freely, and by lowering the lower main body, the lower part of the upper main body opens (the upper opening of the lower main body is opened) and the main body is opened, allowing the film-like substrate to be threaded or maintenance work to be done on the support roller or the hot air blowing section. Furthermore, there is no need for a guide mechanism for the lid that is raised or a locking mechanism for engaging and holding the lid and the frame on which it is mounted. This simple configuration further ensures safety and significantly reduces the anxiety of the worker during work. Furthermore, the configuration is provided with a substrate protection support that prevents the substrate from coming into contact with the edge even if it descends or sags when the lower main body is lowered, and this makes it possible to prevent damage to the substrate during maintenance work when the lower main body is lowered, resulting in an extremely practical and epoch-making drying device to be installed on a coating device. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a schematic perspective view illustrating the configuration of one of the main body portions constituting the drying chamber of this embodiment, with the lower body portion lowered relative to the upper body portion. [Diagram 2]FIG. 13 is an explanatory oblique view of the schematic configuration of the other main body portion constituting the drying chamber section of this embodiment, with the lower body portion lowered relative to the upper body portion. [Diagram 3] FIG. 13 is an explanatory front view of the embodiment in which a main body portion on one side and a main body portion on the other side are arranged side by side. [Figure 4] FIG. 13 is an explanatory front view of the embodiment in which the main body portion on one side and the main body portion on the other side are arranged side by side and a plate-shaped support portion for protecting the substrate is inserted and attached. [Diagram 5] FIG. 2 is an explanatory front view of the embodiment in a used state. [Figure 6] FIG. 2 is an enlarged explanatory front view of a main portion of the embodiment in a used state. [Figure 7] FIG. 13 is an explanatory front view during maintenance work in this embodiment in which the hot air blowing of each hot air blowing part is stopped and the lower part of the main body part on one side is lowered. [Figure 8] 13 is an explanatory front view of the main parts during maintenance work in this embodiment in which the hot air blowing of each hot air blowing part is stopped and the lower part of the main body part on one side is lowered. FIG. [Figure 9] 1 is an explanatory perspective view of a plate-shaped substrate protection support portion that is inserted into a transport guide portion installed at the transport entrance / exit portion of this embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] A preferred embodiment of the present invention will be briefly described below with reference to the drawings to illustrate the operation of the present invention.

[0019] For example, a film-like substrate 2 that has been coated by a coating device 1 is conveyed through a drying chamber 3 made up of main bodies 6 of a drying device, whereby the coating film formed on the surface is dried.

[0020] That is, for example, when the coated substrate 2 is taken up and conveyed through a drying chamber 3 consisting of multiple main body parts 6 arranged side by side of the drying device, the coating film on the upper surface is dried by hot air blown out from the hot air blowing section 4 provided in each of the main body parts 6 or by heat from the heater section.

[0021] In such a drying apparatus, the drying chamber section 3 of the present invention is configured by arranging multiple main body sections 6 side by side on the left and right, which transport and pass the film-like substrate 2 that has been coated as described above through the left and right transport entrance / exit sections 5, and each of these main body sections 6 is configured to comprise an upper main body section 7 which transports and passes the film-like substrate 2 through the left and right transport entrance / exit sections 5, and a lower main body section 8 which is freely movable up and down relative to the upper main body section 7 and which, when lowered, opens the lower part of the upper main body section 7 and opens the upper opening.

[0022] In the lower part 8 of the main body 6, for example, a plurality of support rollers for supporting the film-like substrate 2 are arranged in a suspended state, and further, for example, a lower hot air blowing section 4 and a hot air exhaust section are provided. Alternatively, in the case of using a floating drying method as in the following embodiment, instead of support rollers, a lower hot air blowing section 4 is provided for supporting the film-like substrate 2 in a non-contact manner while drying it.

[0023] Therefore, by lowering the lower main body 8 relative to the upper main body 7 by the lifting device 9, the main body 6 is opened, i.e., the lower part of the upper main body 7 is open and the upper opening of the lower main body 8 is opened, allowing the threading of the film-like substrate 2 (paper threading operation) and maintenance work on the support rollers or the hot air blowing section 4 to be performed.

[0024] Therefore, there is no need for a guide mechanism for the lid portion that is raised, or a locking mechanism for engaging and retaining the lid portion with the frame on which it is mounted, resulting in a simple configuration that further ensures safety and significantly reduces the worker's anxiety during work.

[0025] Furthermore, in the present invention, a transport guide section 10 is provided between the transport entrance / exit sections 5 which face each other by arranging the main body sections 6 side by side, and a film-like substrate 2 is transported through the transport entrance / exit section 5 and the transport guide section 10. In this embodiment, a substrate protection support section 11 is provided at the transport entrance / exit section 5 or the transport guide section 10 to prevent the substrate 2 from dropping or sagging down and coming into contact with edges or corners, causing scratches.

[0026] Therefore, when the lower part 8 of the main body is lowered during maintenance work, the base material 2 drops or sags, but since this base material 2 comes into contact with and is supported by the base material protection support part 11, it is possible to prevent the base material 2 from hitting edges or corners and being damaged during maintenance work. EXAMPLES

[0027] A specific embodiment of the present invention will now be described with reference to the drawings.

[0028] In this embodiment, the present invention is applied to a drying device provided in a coating device 1 in which a film-like object to be coated (substrate 2) is pulled out from a take-up roll 14 and transported via a support roller 16 facing a nozzle portion 15 of the coating device 1, a coating liquid is ejected from an ejection hole at the tip of the nozzle portion 15 to coat one side of the film-like substrate 2 supported by the support roller 16, and the coated film-like substrate 2 is then dried by being transported horizontally through a drying chamber portion 3 consisting of multiple main body portions 6 of the drying device arranged side by side, and then wound up around a recovery roll 17.

[0029] That is, the drying device in this embodiment is provided downstream of the film coating device 1 which is configured to coat the upper surface of the substrate 2 with the coating liquid in the form of a film by transporting the film-like substrate 2 facing the nozzle portion 15 toward the nozzle portion 15 while ejecting the coating liquid from the tip discharge hole of the nozzle portion 15, and is configured to transport and dry the film-like substrate 2 which has been coated on its upper surface by the coating device 1.

[0030] Specifically, the drying chamber section 3 is configured with multiple main body sections 6 arranged side by side on the left and right, which transport and pass the film-like substrate 2 through the left and right transport entrance / exit sections 5, and each main body section 6 is configured to include an upper main body section 7 which transports and passes the film-like substrate 2 through the left and right transport entrance / exit sections 5, and a lower main body section 8 which is freely movable up and down relative to the upper main body section 7 and which, when lowered, opens the lower part of the upper main body section 7 and opens the upper opening.

[0031] That is, in this embodiment, the main body 6 is configured such that the upper body 7 and the lower body 8 are arranged on top of each other and can be freely separated vertically, and when the lower body 8 descends relative to the upper body 7, the lower part of the upper body 7 opens, and the upper opening for maintenance work of the lower body 8 opens.

[0032] In this embodiment, a transport entrance / exit section 5 is provided on the left and right sides of the upper part 7 of the main body which is fixed to the installed frame 13 (machine frame), and a hot air blowing section 4 is provided in this upper part of the main body 7, and a heater section is also provided as necessary.

[0033] The lower main body 8, which is raised and lowered by a lifting device 9 (lifting cylinder device) along a lifting guide mechanism provided on a frame 13 relative to the fixed upper main body 7, may have a configuration in which multiple support rollers for supporting the film-like substrate 2 are arranged in a suspended state, but in this embodiment, a floating drying method is used in which the substrate 2 is supported without contact while drying it, and hot air blowing parts 4 are also provided in the lower main body 8 so that they are arranged alternately above and below the hot air blowing part 4 provided on the upper main body 7 and the substrate 2.

[0034] In this embodiment, as described above, the main body 6, which is composed of the upper body 7 and the lower body 8, through which the film-like substrate 2 that has been coated is transported and passed, is connected so that the left and right transport inlet / outlet sections 5 communicate with each other, thereby ensuring a long total drying chamber length.

[0035] Specifically, in this embodiment, the main body portion 6 is arranged side by side on the left and right, so that a box-shaped transport guide portion 10 is provided between the slit-shaped transport entrance / exit portion 5 which faces each other, and the film-shaped substrate 2 is transported through this transport entrance / exit portion 5 and the transport guide portion 10.

[0036] Furthermore, in this embodiment, a box-shaped conveying guide section 10 is attached to the conveying entrance / exit section 5 on one side in an outward protruding state, and its tip is inserted into the conveying entrance / exit section 5 on the other side. The conveying entrance / exit section 5 and the conveying guide section 10 are covered with insulating material, and the main body sections 6 are connected side by side on the left and right sides.

[0037] In this embodiment, a substrate protection support portion 11 is inserted into the bottom of the transport guide portion 10 so that both ends protrude inward through the transport entrance / exit portion 5, in order to prevent the substrate 2 from descending or sagging and coming into contact with edges or corners.

[0038] In addition, in this embodiment, for example, when the hot air output from the hot air output section 4 is stopped, the base material 2 will come into contact with the hot air output section 4 below. In this case, in order to prevent the base material 2 from being scratched, the upper part of the hot air output section 4 is shaped so as not to have edges or corners that may cause damage.

[0039] Furthermore, in this embodiment, when the lower part 8 of the main body descends, the substrate 2 which descends or hangs further is supported by the substrate protection support portion 11 which curves downward from the bottom within the left and right conveying guide portions 10, thereby preventing the substrate 2 from coming into contact with edges or corners.

[0040] Specifically, in this embodiment, the substrate protection support portion 11 is arranged to protrude inward from the transport entrance / exit portion 5 as described above, and the upper surface of this protruding tip portion is made into the substrate protection curved support surface 12, which is the support surface against which the substrate 2 descends or hangs down and makes contact, and which is a support surface that hangs down and curves.

[0041] To explain further, the substrate protection support part 11 in this embodiment is a flat plate material with which the substrate 2 descends or hangs down and comes into contact when the hot air discharge from the hot air discharge part 4 is stopped and when the lower part of the main body 8 descends, and the plate surface of the protruding tip part of this plate material which protrudes slightly from the transport entrance / exit part 5 to the inside of the upper part of the main body 7 is formed into a plate surface that is smoothly curved downwardly, and this is the curved support surface for protecting the substrate 12, and at least this curved support surface for protecting the substrate 12 with which the substrate 2 comes into contact is provided with a protective coating such as a fluororesin coating.

[0042] Therefore, when the lower body 8 is lowered during maintenance work, the base material 2 drops or sags, but this base material 2 comes into contact with and is supported by the curved support surface 12 for protecting the base material of the support part 11 for protecting the base material, thereby preventing the base material 2 from hitting edges or corners and being damaged during maintenance work. Moreover, by simply adjusting and designing the shape, surface characteristics, protruding position, etc. of the support part 11 for protecting the base material, it is possible to easily prevent the base material 2 from being damaged during lowering maintenance work.

[0043] Incidentally, the present invention is not limited to the present embodiment, and the specific configuration of each component can be designed as appropriate. [Explanation of symbols]

[0044] 1 Coating device 2 Base material 3 Drying room 4 Hot air outlet section 5. Transport entrance / exit 6 Main body 7 Top of the unit 8 Bottom of the main unit 9 Lifting device 10. Transport entrance / exit 11 Support for base material protection 12 Curved bearing surface for protecting substrate 13 Frame 14 Winding roll 15 Nozzle section 16 Support roller 17 Recovery Roll

Claims

1. A drying device comprising: a drying chamber section through which a film-like substrate is conveyed and passed after being coated with a coating liquid by a coating device and discharged from the coating device; a hot air delivery section for delivering hot air for drying the coating liquid applied to the substrate; or a heater section for drying the substrate; The drying chamber is configured such that a plurality of main body portions are arranged side by side on the left and right sides, through which the film-shaped base material is transported and passed via left and right transport inlet / outlet portions, The main body includes an upper body portion through which the film-shaped base material is transported and passed through the left and right transport inlet / outlet portions, and a lower body portion that is provided so as to be freely raised and lowered relative to the upper body portion and that opens a lower portion of the upper body portion and an upper opening portion when the lowered portion is lowered. The support rollers for supporting the film-like substrate are provided in a plurality of positions in the lower part of the main body, or the hot air blowing unit for supporting the substrate in a non-contact manner while drying the substrate is provided, The lower part of the main body is provided with a lifting device for lifting the lower part in the vertical direction, By lowering the lower part of the main body downward by the lifting device, the lower part of the upper part of the main body opens, the upper opening of the lower part of the main body opens, and the main body is in an open state, so that the work of threading the film-like base material or the maintenance work of the support roller or the hot air blowing part can be performed, A drying apparatus characterized in that a transport guide section is provided between the transport entrance / exit sections which face each other when the main body sections are arranged side by side on the left and right, and a substrate protection support section is provided at the transport entrance / exit section or the transport guide section to prevent the substrate from descending or sagging into contact with an edge when the lower part of the main body is lowered.

2. The main body portion has a configuration in which the main body upper portion and the main body lower portion are vertically separated and overlapped with each other, The drying device according to claim 1, characterized in that, when the lower part of the main body is lowered relative to the upper part of the main body, the lower part of the upper part of the main body is opened and the upper opening for maintenance work on the lower part of the main body is opened.

3. The drying device described in claim 1, characterized in that the substrate protection support portion is a support surface against which the substrate descends or hangs down and comes into contact when the lower part of the main body descends, and is configured to have a substrate protection curved support surface that hangs down and is curved.

4. The drying device described in claim 3, characterized in that the substrate protection support portion is composed of a plate material into which the substrate descends or hangs when the lower part of the main body descends, a part of the plate material constitutes the curved substrate protection support surface, and at least the curved substrate protection support surface with which the substrate comes into contact is provided with a protective coating.

Images