JP6000434B2 - Drying equipment - Google Patents

Description

  The present invention relates to a drying apparatus that dries a long thin sheet (hereinafter referred to as a workpiece) such as a continuous film or foil by hot air blown from a hot air nozzle onto the surface of the workpiece while being conveyed by a conveyance roller.

  Conventionally, as shown in FIG. 8, a continuous thin film (such as a foil) or a thin sheet (hereinafter referred to as a workpiece) W is conveyed by a conveying roller 220 through a drying furnace 210 while the surface of the workpiece W is heated with hot air. A drying apparatus 200 that continuously dries with hot air blown from a nozzle 230 is known (see Patent Document 1). The workpiece W is wound around a winding roller 20 and a feeding roller 30 arranged outside the drying furnace 210, and the workpiece W is continuously fed out from the feeding roller 30 by rotating the winding roller 20. While being conveyed, the sheet is conveyed on the conveying roller 220.

JP 2010-2222090 A

  In such a drying apparatus 200, the workpiece W is pressed against the conveyance roller 220 by the hot air blown out from the hot air nozzle 230, thereby suppressing the fluttering of the workpiece W.

  Here, the hot air nozzle 230 is disposed immediately above the conveying roller 220 in order to reliably suppress the occurrence of fluttering of the workpiece W. Further, the hot air nozzle 230 can be brought as close as possible to the conveying roller 220 in order to secure the wind speed for pressing the work W. That is, the distance D between the hot air nozzle 230 and the transport roller 220 is set to be as short as possible. For this reason, a narrow gap between the hot air nozzle 230 and the transport roller 220 is used when the work W is manually passed through the drying furnace 210 (hereinafter referred to as foil-feeding) before the drying apparatus 200 is operated. It was troublesome to let work W pass through.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a drying apparatus that can easily perform a foil passing operation through a narrow gap between a hot air nozzle and a conveying roller.

  The drying device of the present invention includes a transport roller, a hot air nozzle, a hot air box, and a duct. The conveyance roller conveys a long sheet-shaped workpiece. The hot air nozzle is disposed immediately above the conveying roller and blows hot air toward the workpiece. The hot air box is disposed above the conveying roller, and the hot air box is provided with a hot air nozzle. Further, the hot air box can be flipped up on the other end side with the axial end of the conveying roller as a base point. The duct is erected on one end side in the axial direction of the transport roller, and hot air flows through the duct.

  In the drying apparatus, the hot air box includes a cylindrical suction port protruding from one end side in the axial direction of the transport roller, and the suction port has a long slot shape in the workpiece transport direction. And the width | variety of the suction inlet in a conveyance direction is larger than the width | variety of the hot air nozzle in a conveyance direction. In addition, the duct includes an exhaust port larger than the suction port at a location facing the suction port.

  In the specific configuration of the drying apparatus, a plurality of hot air nozzles are arranged side by side in the workpiece conveyance direction, and all the hot air nozzles face downward from the position of the suction port in a plan view from the axial direction of the conveyance roller. It extends to.

  In another specific configuration of the drying apparatus, the drying apparatus includes a sheet-like packing projecting into the exhaust port on the entire periphery of the exhaust port.

  In still another specific configuration of the drying apparatus, the hot air nozzle is provided such that the position of the hot air nozzle can be changed with respect to the hot air box. Specifically, the hot air box further includes a tube opening that is provided on the lower surface of the hot air box and into which the hot air nozzle is inserted, and a bolt that attaches the hot air nozzle to the tube opening. The tube opening has a long hole extending vertically, and the bolt is inserted through the long hole.

  According to the present invention, it is possible to easily perform a foil passing operation through a narrow gap between the hot air nozzle and the transport roller.

It is a sectional side view which shows schematic structure of the drying apparatus which concerns on one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is an enlarged view around a drying furnace in FIG. 2. It is a front view of a nozzle unit. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4. It is sectional drawing of the drying furnace explaining the operation | work which performs positioning of a hot air nozzle, and foil passing of a workpiece | work. It is a figure explaining the positioning operation | work of a hot air nozzle. It is a sectional side view which shows schematic structure of the conventional drying apparatus.

  Below, the structure of the drying apparatus which concerns on embodiment of this invention is demonstrated with reference to FIGS. The drying apparatus 100 according to the present embodiment blows the surface of the workpiece W from the hot air nozzle 142 while conveying a long thin sheet (hereinafter referred to as a workpiece) W such as a continuous film or foil by the conveyance roller 150. It is dried by hot air.

  As shown in FIGS. 1 and 2, the drying apparatus 100 of the present embodiment includes a casing 110, a duct 120, a blower 130, nozzle units 140 </ b> A, 140 </ b> B, 140 </ b> C, and a plurality (six in this embodiment). The conveyance roller 150 is provided.

  The housing 110 accommodates the duct 120, the blower 130, the nozzle units 140 </ b> A, 140 </ b> B, 140 </ b> C, and the plurality of transport rollers 150. A drying furnace 112 is defined above the housing 110. The drying furnace 112 includes an openable / closable lid 111. Specifically, as shown in FIG. 3, the lid 111 can be flipped up (rotated) around a hinge 116 attached to the top surface of the casing 110, and the lid 111 can be flipped up to dry the oven. The side surface of 112 is opened wide and opened.

  The duct 120 includes an intake duct 121, a first air supply duct 122, three second air supply ducts 123A to 123C, a third air supply duct 124, and a fourth air supply duct 125. The intake duct 121 and the first to third air supply ducts 122 to 124 are disposed below the drying furnace 112. The fourth air supply duct 125 is disposed on one end side in the axial direction of the conveying roller 150 (direction orthogonal to the conveying direction of the workpiece W), and constitutes the back side surface (left side surface in FIG. 3) of the drying furnace 112. .

  The intake duct 121 is connected to a hot air supply device 300 installed outside the housing 110. The hot air supply device 300 includes at least a heater 50, a blower 60, and a duct 70. The duct 70 and the intake duct 121 are connected via the flexible pipe 40. The hot air supply device 300 sends air (hot air) heated by the heater 50 to the intake duct 121 through the duct 70 by the blower 60.

  The first, third, and fourth air supply ducts 122, 124, and 125 extend in the conveyance direction of the workpiece W and are disposed horizontally. The three second air supply ducts 123A to 123C are arranged vertically. As shown about the 2nd duct 123C in FIG. 2, the downstream part of 2nd air supply duct 123A-123C is changing the direction horizontally, and is expanding. The second air supply ducts 123 </ b> A to 123 </ b> C are connected to the body portions of the first and third air supply ducts 122 and 124. A filter 160 that removes dust from hot air is provided at a connection portion between the second air supply ducts 123 </ b> A to 123 </ b> C and the third air supply duct 124. In the present embodiment, a HEPA filter is used as an example of the filter 160. The fourth air supply duct 125 has a narrower flow path than the third air supply duct 124 and is provided so as to rise from the top surface of the third air supply duct 124.

  A blower 130 is provided between the intake duct 121 and the first air supply duct 122. The blowing capacity (air volume) of the blower 130 has sufficient capacity to send hot air to the nozzle units 140 </ b> A to 140 </ b> C through the air supply ducts 122 to 125 and blow out from the hot air nozzle 142. In this embodiment, a centrifugal fan is used as an example of the blower 130.

  The plurality of transport rollers 150 are arranged horizontally at equal intervals. As shown in FIG. 3, a pair of frame plates 113 </ b> A and 113 </ b> B are erected on the bottom surface of the drying furnace 112 so as to face each other in a direction orthogonal to the conveyance direction of the workpiece W. Each transport roller 150 is supported by these frame plates 113A and 113B so as to be rotatable about its axis.

  Although not shown, the work W is wound around a take-up roller and a feed roller arranged outside the housing 110, and the work W is sent out by rotating the take-up roller. It is conveyed on the conveying roller 150 while being continuously sent out from the roller.

  Each nozzle unit 140 </ b> A to 140 </ b> C is disposed over the two transport rollers 150. The nozzle units 140 </ b> A to 140 </ b> C are respectively provided at upstream, midstream, and downstream positions in the conveyance direction of the workpiece W. As shown in FIG. 3, the nozzle units 140 </ b> A to 140 </ b> C include a hot air box 141 and a hot air nozzle 142.

  As shown in FIG. 5, the hot air box 141 has a rectangular parallelepiped shape that is long in the conveyance direction of the workpiece W. As shown in FIG. 3, the hot air box 141 is provided at the top surface thereof so as to be rotatable using a hinge 115 attached to the back side surface of the drying furnace 112. As a result, as shown by the broken line in FIG. 3, the hot air box 141 can be flipped up at the other end side from the axial one end side (upper left in FIG. 3) of the transport roller 150. As shown in FIG. 4, the hot air box 141 is provided with a cylindrical suction port 1411 protruding from one axial side surface of the transport roller 150. The suction port 1411 has a long shape in the longitudinal direction of the hot air box 141 (the conveyance direction of the workpiece W) so that hot air can be taken into the hot air box 141 efficiently.

  As shown in FIG. 3, the fourth air supply duct 125 is formed with an exhaust port 1251 that opens larger than the suction port 1411 at a location facing the suction port 1411. A sheet-like packing 127 that protrudes into the exhaust port 1251 is attached to the entire periphery of the exhaust port 1251, and the suction port 1411 and the exhaust port 1251 are hermetically sealed by pressing the tip of the suction port 1411 against the packing 127. To be connected to. According to this connection structure, when the hot air box 141 is flipped up, it is easy to remove the connection parts.

  The packing 127 can be formed of various rubbers and resins. The material of the packing 127 is selected according to the environment to which the packing 127 is exposed according to the conditions for using the drying device 100. In particular, it is preferably formed of fluororubber, silicone rubber or fluororesin having excellent heat resistance.

  Although the packing 127 is slightly bent toward the fourth air supply duct 125 when the suction port 1411 is pressed against the packing 127, the inside of the fourth air supply duct 125 is heated by the hot air sent from the fourth air supply duct 125. Since the pressure is positive as compared with that in 141, a force in a direction to cancel the deflection acts, and the airtightness of the connecting portion is maintained when the drying apparatus 100 is in operation.

  As shown in FIGS. 4 and 5, two cylindrical ports 1412 having a rectangular parallelepiped shape that is long in the axial direction of the conveying roller 150 are provided on the lower surface of the hot air box 141 so as to be aligned in the conveying direction of the workpiece W. The tube port 1412 is located immediately above the conveying roller 150 (see FIG. 1). A pair of elongated holes 1413 and 1413 extending vertically are passed through the cylindrical port 1412 at both ends in the axial direction of the conveying roller 150.

  As shown in FIG. 5, the hot air nozzle 142 has a substantially rectangular parallelepiped shape having a size corresponding to the cylindrical port 1412, and a tapered portion is formed at the lower portion of the surface facing the workpiece W in the conveying direction. In the hot air nozzle 142, a round hole 1423 passes through a surface that faces the workpiece W in the conveyance direction at a location corresponding to the long hole 1413. The hot air nozzle 142 is attached to the tube port 1412 of the hot air box 141 using a bolt 143 inserted through the long hole 1413 and the round hole 1423 and a nut 144 fitted into the bolt 143. Thereby, the hot air nozzle 142 can be moved up and down with respect to the hot air box 141 within the range of the long hole 1413, and the position thereof can be changed.

  A suction port 1421 is opened on the top surface of the hot air nozzle 142. A slit-like discharge port 1422 extending in the axial direction of the conveying roller 150 is formed at the lower end of the hot air nozzle 142 (that is, the tip of the tapered portion). The hot air nozzle 142 takes in the hot air introduced into the hot air box 141 from the suction port 1421 and blows it out from the discharge port 1422 toward the work W. With this hot air, the workpiece W conveyed by the conveying roller 150 can be dried.

  Next, operations for positioning the hot air nozzle 142 and passing the workpiece W through the drying apparatus 100 configured as described above will be described with reference to FIGS. 6 and 7.

  First, as shown in FIG. 6A, after opening the lid 111 and opening the drying furnace 112, the nozzle units 140A to 140C are flipped up. At this time, the hot air nozzle 142 can be easily retracted from the transport roller 150 by holding the hot air box 141 having a certain size. Then, as shown in FIG. 7A, ring-shaped jigs 10 are mounted on the peripheral surfaces of both end portions of all the conveyance rollers 150. In the present embodiment, the jig 10 is composed of two semicircular parts 11 and 12 that can be divided. A countersink hole is formed in one part and a tap hole is formed in the other part so as to penetrate at right angles to the joint surfaces of the parts 11 and 12. When the parts 11 and 12 are joined, the joining surfaces of the parts 11 and 12 are combined and held as a ring, and a bolt is inserted from the counterbore side and screwed into the tap.

  Next, as shown in FIG. 6B, the nozzle units 140A to 140C are returned to their original positions. Then, as shown in FIG. 7B, the positions of all the hot air nozzles 142 are changed, and positioning is performed at such a height that the tip of the nozzles abuts against the jig 10. Thereby, the space | interval of the hot air nozzle 142 and the conveyance roller 150 can be adjusted easily.

  Next, as shown in FIG. 6C, the nozzle units 140A to 140C are flipped up again, and the jig 10 is removed.

  Next, as shown in FIG. 6D, the workpiece W is threaded in a state where the nozzle units 140A to 140C are flipped up. At this time, since the hot air nozzle 142 is retracted from the transport roller 150, the gap between the hot air nozzle 142 and the transport roller 150 is increased, and thus foil passing can be easily performed.

  Finally, as shown in FIG. 6E, after the nozzle units 140A to 140C are returned to the lower position, the lid 111 is closed and the drying furnace 112 is closed. At this time, since the distance between the hot air nozzle 142 and the transport roller 150 is already adjusted, the distance between all the hot air nozzles 142 and the transport roller 150 is the same.

  The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above-described embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

W ... Work 10 ... Jig 100 ... Drying device 112 ... Drying furnace 120 ... Duct 127 ... Packing 130 ... Blowers 140A, 140B, 140C ... Nozzle unit 141 ... Hot air box 142 ... Hot air nozzle 143 ... Bolt 150 ... Conveying roller 300 ... Hot air Supply device 1251 ... Exhaust port 1411 ... Suction port 1412 ... Cylinder port 1413 ... Elongated hole

Claims (5)

A transport roller for transporting a long sheet-shaped workpiece;
A hot air nozzle that is disposed directly above the conveying roller and blows hot air toward the workpiece;
A hot air box disposed above the transport roller and provided with the hot air nozzle, the hot air box having the other end side flipped up from one end side in the axial direction of the transport roller;
A duct that is erected on one end side in the axial direction of the transport roller and through which the hot air flows;
Have
The hot air box includes a cylindrical suction port protruding from one end side in the axial direction of the transport roller, and the suction port has a long slot shape in the transport direction of the workpiece, and the suction port in the transport direction Is larger than the width of the hot air nozzle in the transport direction,
The said duct is a drying apparatus provided with the exhaust port larger than the said suction port in the location facing the said suction port. A plurality of the hot air nozzles are arranged side by side in the transport direction,
2. The drying device according to claim 1, wherein each of the hot air nozzles extends downward from a position of the suction port in a plan view from the axial direction of the transport roller.   The drying apparatus according to claim 1, further comprising a sheet-like packing projecting into the exhaust port on the entire periphery of the exhaust port.   The said hot air nozzle is a drying apparatus as described in any one of Claims 1-3 provided so that a position change was possible with respect to the said hot air box. The hot air box is further provided with the tube opening projecting on the lower surface thereof and the hot air nozzle inserted therein, and a bolt for attaching the hot air nozzle to the tube opening,
The tube opening has a long hole extending vertically,
The drying device according to claim 4, wherein the bolt is inserted through the elongated hole.

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