TWI653424B - Dryer - Google Patents

Abstract

The dryer is provided with a drying box, a conveying device, a guide device, and a hot air supply device. The hot air supply device includes a fan for sucking air in the drying room, a heater for heating the air sucked by the fan, and a fan with the fan. A hot air supply duct connected to the exhaust port, the hot air supply duct includes: an outdoor duct disposed outside the drying chamber and extending in the vertical direction; and an indoor duct disposed inside the drying chamber and extending in the vertical direction, outdoor The upper end portion of the duct is connected to the upper end portion of the indoor duct, and the lower end portion of the outdoor duct is connected to the lower end portion of the indoor duct. The indoor duct is formed with a plurality of ejection holes for spraying the hot air supplied into the indoor duct into the drying room. The ejection hole is formed at a position facing the belt-shaped member.

Description

Dryer

The present invention relates to a dryer for drying a belt-shaped member, for example.

As a conventional dryer, there is known a device including: a drying box having a drying chamber inside; a plurality of air passages having a plurality of air ejection holes provided in the drying chamber in a vertical direction; and a hot air supply The device includes a blower and a heating device, and supplies heated air to one end of the air passage, sucks out air in the drying chamber, passes the belt-shaped member between the air passages, and alternately passes the belt-shaped member in the drying chamber. The upper region and the lower region are conveyed while moving (for example, refer to Patent Document 1). Prior Art Literature Patent Literature Patent Literature 1: China Utility Model Registration No. 201202023

However, in the dryer described in Patent Document 1, the heated air is supplied into the drying chamber from one end in the up-down direction of the air passage, so the amount of heated air supplied to the upper and lower regions of the drying chamber changes. The results are uneven and the drying time is prolonged.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a dryer capable of equalizing the amount of heated air supplied to an upper region and a lower region of a drying chamber, thereby drying the belt-shaped member in a short time.

The above object of the present invention is achieved by the following structure.

(1) A dryer for conveying and drying a fiber-shaped belt-shaped member, the dryer being provided with: a drying box having a drying chamber through which the belt-shaped member passes; and a conveying device for conveying the belt-shaped member; The guide device is arranged in the drying room to guide the conveyance of the belt-shaped member; and the hot air supply device sucks the air in the drying room and supplies the heated air into the drying room. The hot air supply device includes: A fan for sucking air in the drying room, a heater for heating the air sucked by the fan, and a hot air supply duct connected to the exhaust port of the fan. The hot air supply duct includes: Outdoor ducts extending in the up-down direction; and indoor ducts extending in the up-and-down direction arranged inside the drying chamber. The upper end of the outdoor duct is connected to the upper end of the indoor duct, and the lower end of the outdoor duct is connected to the lower end of the indoor duct. The indoor duct is formed with a plurality of ejection holes for ejecting the hot air supplied into the indoor duct into the drying chamber. In the belt-shaped member into a position facing.

(2) In the dryer described in (1), the guide device includes a plurality of upper guide rollers arranged in a left-right direction in an upper region of the drying chamber, and arranged in a left-right direction in a lower region of the drying chamber. The plurality of lower guide rollers, the belt-like member are alternately wound around at least one upper guide roller and at least one lower guide roller, and are conveyed so as to alternately move in an upper region and a lower region of the drying chamber.

(3) In the dryer described in (2), the indoor ducts of the hot air supply duct are arranged at predetermined intervals in the left-right direction of the drying chamber, and the belt-shaped member passes between the left-right adjacent indoor ducts.

(4) In the dryer described in (3), the indoor duct is a tubular member having a rectangular cross section, and the ejection holes are arranged at predetermined intervals in the longitudinal direction of the indoor duct.

(5) In the dryer according to any one of (1) to (4), the conveying device includes a first feeding device arranged on an upstream side of the drying box, and a second feeding device arranged on a downstream side of the drying box. The feeding speed of the feeding device and the second feeding device is set to a speed higher than the feeding speed of the first feeding device.

(6) In the dryer described in (5), a tension measuring device for measuring the tension of the belt-shaped member is arranged between the first feeding device and the second feeding device. Effect of the invention

According to the present invention, there is provided a drying box having a drying chamber through which a belt-shaped member passes, a conveying device for conveying the belt-shaped member, and a guide device disposed in the drying chamber to convey the belt-shaped member. A guide; and a hot air supply device that sucks air in the drying room and supplies heated air into the drying room. The hot air supply device includes a fan for sucking air in the drying room, and air sucked by the fan. A heater for heating and a hot air supply duct connected to an exhaust port of a fan, the hot air supply duct includes an outdoor duct disposed outside the drying chamber and extending in the up-down direction; and an inner duct disposed inside the drying chamber, An indoor duct extending in the up-down direction, an upper end of the outdoor duct is connected to an upper end of the indoor duct, a lower end of the outdoor duct is connected to a lower end of the indoor duct, and a plurality of indoor ducts are formed to be supplied to the indoor duct. The hot air inside is blown out into the discharge hole in the drying chamber. The discharge hole is formed at a position facing the belt-shaped member, so that the Hot air (heated air) in the upper region and the lower region of the drying chamber fed by the feeding volume of the like, the belt-shaped member in a short time drying.

Hereinafter, one embodiment of the dryer according to the present invention will be described in detail based on the drawings. In addition, in the following description, the upper side is set to the upper side with respect to the paper surface of FIG. 1, the lower side is set to the lower side with respect to the paper surface of FIG. 1, and the front side is set to the front side with respect to the paper surface of FIG. 1, The rear side is set to the back side with respect to the paper surface of FIG. 1, the left side is set to the left side with respect to the paper surface of FIG. 1, and the right side is set to the right side with respect to the paper surface of FIG. 1. The left-right direction also refers to the width direction. In addition, the upstream side and the downstream side are based on the conveyance direction of the belt-shaped member, the right side is the upstream side, and the left side is the downstream side.

The dryer 10 according to the present embodiment is used for conveying and drying a fiber-shaped belt-shaped member T, and as shown in FIGS. 1 and 2, it includes a drying box 20 having a drying chamber 21 through which the belt-shaped member T is passed. A conveying device 30 for conveying the belt-shaped member T; a guide device 40 disposed in the drying chamber 21 to guide the conveyance of the belt-shaped member T; and a hot air supply device 50 for sucking the inside of the drying chamber 21 The heated air is supplied to the drying chamber 21. In the dryer 10, the hot air supply device 50 is used to fill the drying chamber 21 with high-temperature air, and the belt-shaped member T is passed through the drying chamber 21, thereby heating and drying the belt-shaped member T containing moisture. The fiber-like belt-shaped member T is, for example, a fastener tape of a slide fastener.

The drying box 20 is a quadrangular box-shaped body, and includes: an introduction port 22 formed on the upper portion of the right side to introduce the belt-shaped member T into the drying chamber 21; The strip-shaped member T leads from the inside of the drying chamber 21 to an outlet 23.

The conveying device 30 includes a first feeding device 31 disposed on the upstream side (right side in FIG. 1) of the drying box 20, and a second feeding device 32 disposed on the downstream side (left side in FIG. 1) of the drying box 20; and A tension measuring device 33 arranged between the first feeding device 31 and the second feeding device 32 to measure the tension of the belt-shaped member T. According to the example of the figure, the tension measuring device 33 is arranged between the first feeding device 31 and the drying box 20. The tension measuring device 33 may be disposed between the drying box 20 and the second feeding device 32. The first and second feeding devices 31 and 32 include drive rollers 31 a and 32 a and pressure rollers 31 b and 32 b, respectively, and convey the belt-shaped member T with the belt-shaped member T sandwiched therebetween. Then, by setting the conveying speed V2 of the second feeding device 32 to a speed equal to or higher than the conveying speed V1 of the first feeding device 31, tension is applied to the belt-shaped member T. As this setting method, first, the belt-shaped member T is conveyed by the first feeding device 31 and the second feeding device 32 at a predetermined conveying speed. Next, the conveying speed V1 of the first feeding device 31 is determined. Next, the tension measuring device 33 measures the tension applied to the belt-like member T during transportation. Then, based on the measurement value measured by the tension measuring device 33, control is performed such that the conveyance speed V2 of the second feed device 32 becomes a speed equal to or higher than the conveyance speed V1 of the first feed device 31. Thereby, the belt-shaped member T is conveyed by the first feeding device 31 and the second feeding device 32 in a state where a predetermined tension is applied.

The tension measurement device 33 includes a measurement roller 33 a that is in contact with the belt-shaped member T during transportation, and a sensor (not shown) for measuring a load applied from the belt-shaped member T to the measurement roller 33 a. Based on the load applied to the measurement roller 33a, the tension applied to the belt-shaped member T is measured. In addition, according to the illustrated example, the tension measuring device 33 further includes a first guide roller 33b disposed upstream of the belt-shaped member T in the conveyance direction of the measurement roller 33a, and a conveyance direction of the belt-shaped member T disposed in the measurement roller 33a. The second guide roller 33c on the downstream side. Each of the guide rollers 33b and 33c guides the conveyance of the belt-shaped member T so that the belt-shaped member T is wound around a predetermined range around the measurement roller 33a.

As shown in FIG. 1, the guide device 40 includes a plurality of upper guide rollers 41 arranged in the left-right direction in an upper area in the drying chamber 21, and a plurality of guide rollers 41 arranged in a left-right direction in a lower area in the drying chamber 21. Person lower side guide roller 42. According to the example shown in the figure, each of the upper guide roller 41 and the lower guide roller 42 is arranged six. The belt-shaped member T is wound around at least one lower guide roller 42 and at least one upper guide roller 41 after being wound around the upper guide roller 41 provided closest to the inlet 22. According to the illustrated example, the belt-shaped members T are alternately wound around two lower guide rollers 42 and two upper guide rollers 41. Finally, it is wound around the upper guide roller 41 provided closest to the guide outlet 23. Therefore, the belt-shaped member T introduced into the drying chamber 21 from the introduction port 22 is conveyed so as to alternately move in the upper region and the lower region of the drying chamber 21.

In addition, the upper and lower guide rollers 41 and 42 are connected to the drying box 20 such that a portion (hereinafter, also referred to as a "upward and downward transport portion") Ta of the belt-shaped member T wound around them is extended. The bottom faces are arranged vertically. That is, the up-and-down conveyance parts Ta are arranged in parallel in the left-right direction of the drying chamber 21. The space between the adjacent vertical conveying portions Ta can be increased by alternately winding the belt-shaped member T around two or more lower guide rollers 42 and two or more upper guide rollers 41. Thereby, a space for arranging the indoor duct 62 of the hot-air supply duct 60 described later can be secured between the adjacent vertical conveying portions Ta.

As shown in FIG. 2, the hot air supply device 50 includes an air intake duct 51 connected to the upper surface of the drying box 20, and an air intake duct 51 connected to a downstream end of the air intake duct 51 for sucking air in the drying chamber 21. Fan 52; a heater (heat exchanger) 53 provided in the suction duct 51 and heating the air sucked by the fan 52; a branch duct 54 connected to the exhaust port of the fan 52; and a branch duct 54 Connected hot air supply duct 60.

The hot-air supply duct 60 includes an outdoor duct 61 disposed in the drying chamber 21 and extending in the vertical direction, and an indoor duct 62 disposed in the drying chamber 21 and extending in the vertical direction. The upper end of the outdoor duct 61 is connected to the upper end of the indoor duct 62, and the lower end of the outdoor duct 61 is connected to the lower end of the indoor duct 62. Therefore, the hot air supply duct 60 is formed in a ring shape. Further, the branch duct 54 is connected to a central portion in the vertical direction of the outdoor duct 61.

The plurality of indoor ducts 62 are arranged at predetermined intervals in the left-right direction of the drying chamber 21. According to the example of the figure, five indoor ducts 62 are arranged. The plurality of indoor ducts 62 are arranged in the vertical direction, respectively, and are arranged between the vertical transport portions Ta of the belt-shaped members T arranged in parallel. That is, the indoor duct 62 and the vertical-direction conveyance portion Ta of the belt-shaped member T are arranged in parallel with each other. The belt-shaped member T is conveyed so as to pass between the left and right adjacent indoor ducts 62.

As shown in FIGS. 3 and 4, the indoor duct 62 is a tubular member having a rectangular cross section, and a plurality of ejection holes 63 are formed on the left and right sides for ejecting hot air supplied into the indoor duct 62 into the drying chamber 21. . Since the cross section of the indoor duct 62 is rectangular, one side (for example, the rear surface) of the indoor duct 62 can be easily brought into surface contact with the inner wall surface of the drying box 20 or a frame (not shown) arranged in the drying chamber 21. Next, the indoor duct 62 is fixed by welding or screwing. In addition, as shown in FIG. 3, the ejection holes 63 are formed in a direction orthogonal to the longitudinal direction of the indoor duct 62, and are arranged at predetermined intervals in the longitudinal direction of the indoor duct 62. Therefore, since the discharge hole 63 is formed at a position facing the belt-shaped member T, the hot air sprayed from the discharge hole 63 is sprayed onto the belt-shaped member T. Thereby, the belt-shaped member T can be dried in a short time. The number of the ejection holes 63 is arbitrary.

In the dryer 10 configured as described above, the fan 52 is driven, the air in the drying chamber 21 is sucked by the suction duct 51, the sucked air is heated by the heater 53, and the heated air is passed through a plurality of hot winds. The supply duct 60 is supplied into the drying chamber 21. That is, the air in the dryer 10 circulates between the drying chamber 21 and the heater 53.

In addition, after the hot air supplied to the hot air supply duct 60 is divided into the upper and lower parts by the outdoor duct 61, the hot air is supplied from the upper end side part of the indoor duct 62 toward the central part in the vertical direction, and is supplied from the lower end side part of the indoor duct 62 toward the central part in the vertical direction. . At this time, the hot air is ejected from the ejection hole 63 of the indoor duct 62 into the drying chamber 21. As a result, the amount of hot air sprayed from the spray holes 63 arranged near the upper end of the indoor duct 62 and the amount of hot air sprayed from the spray holes 63 arranged near the lower end of the indoor duct 62 are kept constant. Therefore, the hot air is evenly supplied to the upper region and the lower region of the drying chamber 21.

In addition, as shown in FIG. 1, the dehydrator 11 is disposed on the upstream side of the belt-shaped member T in the conveying direction of the first feeding device 31 of the conveying device 30. The dehydrator 11 removes a part of the moisture contained in the belt-shaped member T before the belt-shaped member T is introduced into the drying chamber 21 of the dryer 10. The dehydrator 11 includes a vacuum pump 12, a suction member 14 connected to the vacuum pump 12 via a cyclone separator 13, and a drainage tank 15 connected to the cyclone separator 13. The suction member 14 is in contact with the belt-like member T during transportation. Driven by the vacuum pump 12, the suction member 14 sucks moisture contained in the belt-shaped member T. The extracted moisture is sent to the cyclone separator 13. The cyclone separator 13 separates the moisture from the gas sucked out with the moisture, and discharges the moisture to the drainage tank 15.

As described above, according to the dryer 10 of the present embodiment, the hot air supply device 50 includes the fan 52 for sucking air in the drying chamber 21, and the heater 53 for heating the air sucked by the fan 52. And a hot-air supply duct 60 connected to the exhaust port of the fan 52, the hot-air supply duct 60 includes an outdoor duct 61 disposed outside the drying chamber 21 and extending in the vertical direction; The indoor duct 62 extending in the up-down direction, the upper end of the outdoor duct 61 is connected to the upper end of the indoor duct 62, the lower end of the outdoor duct 61 is connected to the lower end of the indoor duct 62, and a plurality of purposes are formed in the indoor duct 62. In the ejection holes 63 for ejecting the hot air supplied into the indoor duct 62 into the drying chamber 21, the ejection holes 63 are formed at positions facing the belt-shaped member T, so that it can be supplied to the upper and lower regions of the drying chamber 21. The supply amount of hot air is equalized, and the belt-shaped member can be dried in a short time.

In addition, according to the dryer 10 of the present embodiment, the belt-shaped member T is alternately wound around at least one upper guide roller 41 and at least one lower guide roller 42 while alternately in the upper region and the lower region of the drying chamber 21 It is conveyed while moving, so that the long belt-shaped member T can be dried with a space-saving device.

In addition, according to the dryer 10 of this embodiment, the indoor ducts 62 of the hot air supply duct 60 are arranged at predetermined intervals in the left-right direction of the drying chamber 21 because the belt-shaped member T passes between the left-right adjacent indoor ducts 62. Therefore, the belt-shaped member T can be efficiently dried in its longitudinal direction.

In addition, according to the dryer 10 of this embodiment, since the conveying speed V2 of the second feeding device 32 is set faster than the conveying speed V1 of the first feeding device 31, the belt-shaped member T can be conveyed without slackening. .

Moreover, according to the dryer 10 of this embodiment, since the tension measuring device 33 for measuring the tension | tensile_strength of the belt-shaped member T is arrange | positioned between the 1st feeding device 31 and the 2nd feeding device 32, it is possible to make the belt-shaped member T The tension is the specified value.

The present invention is not limited to the configuration exemplified in the above embodiment, and can be appropriately changed without departing from the gist of the present invention.

For example, as shown in FIG. 5, the ejection holes 63 formed in the indoor duct 62 adjacent to the left and right may be arranged so as to be staggered in the longitudinal direction of the indoor duct 62. As a result, hot air is alternately sprayed from the left and right adjacent indoor ducts 62 onto the belt-shaped member T during transportation.

As shown in FIG. 6, the belt-shaped members T may be alternately wound around one upper guide roller 41 and two lower guide rollers 42. Thereby, the belt-shaped member T is conveyed between the left and right adjacent indoor ducts 62 so as to reciprocate in the upper region and the lower region of the drying chamber 21.

10: Dryer 11: Dehydrator 12: Vacuum pump 13: Cyclone separator 14: Suction member 15: Drain tank 20: Drying box 21: Drying chamber 22: Inlet 23: Outlet 30: Conveyor 31: First inlet Feeding devices 31a, 32a: driving rollers 31b, 32b: pressure roller 32: second feeding device 33: tension measuring device 33a: measuring roller 33b: first guide roller 33c: second guide roller 40: guide device 41: upper side Guide roller 42: Lower guide roller 50: Hot air supply device 51: Suction duct 52: Fan 53: Heater 54: Branch duct 60: Hot air supply duct 61: Outdoor duct 62: Indoor duct 63: Ejection hole T: Band shape Component Ta: Upward and downward conveying part

FIG. 1 is a schematic front view for explaining an embodiment of a dryer according to the present invention. Fig. 2 is a schematic left side view of the dryer shown in Fig. 1. FIG. 3 is a schematic cross-sectional view for explaining a discharge hole of the indoor duct shown in FIG. 2. FIG. 4 is a cross-sectional view of the indoor catheter shown in FIG. 3. FIG. 5 is a schematic cross-sectional view for explaining a case where the ejection holes of the indoor ducts adjacent to the left and right are shifted from each other in the longitudinal direction of the indoor duct. 6 is a schematic front view for explaining a case where a belt-shaped member is alternately wound around one upper guide roller and two lower guide rollers.

Claims (6)

A dryer (10) for conveying and drying a fiber-shaped belt-shaped member (T), the dryer (10) comprising a drying box (20) having a belt-shaped member ( T) the drying chamber (21) passing through; the conveying device (30) for conveying the belt-shaped member (T); the guide device (40), which is arranged in the drying chamber (21), The belt-shaped member (T) is guided and conveyed; and a hot air supply device (50) sucks air in the drying chamber (21) and supplies heated air into the drying chamber (21). The hot air supply device (50) includes a fan (52) for sucking air in the drying chamber (21), and a heater (for heating the air sucked by the fan (52)) 53), and a hot air supply duct (60) connected to an exhaust port of the fan (52), the hot air supply duct (60) comprising: An outdoor duct (61) extending in a direction; and an indoor duct (62) extending in the up-down direction arranged inside the drying chamber (21), and an upper end portion of the outdoor duct (61) and the chamber An upper end portion of the duct (62) is connected, a lower end portion of the outdoor duct (61) is connected to a lower end portion of the indoor duct (62), and a plurality of indoor ducts (62) are formed to be supplied to The hot air in the indoor duct (62) is sprayed to a spray hole (63) in the drying chamber (21), and the spray hole (63) is formed at a position facing the belt-shaped member (T). According to the dryer (10) according to item 1 of the scope of patent application, the guide device (40) includes a plurality of upper guide rollers (in an upper region in the drying chamber (21)) arranged in a left-right direction. 41) and a plurality of lower guide rollers (42) arranged in a left-right direction in a lower area in the drying chamber (21), and the belt-shaped members (T) are alternately wound around at least one The upper guide roller (41) and at least one of the lower guide rollers (42) are conveyed so as to alternately move in an upper region and a lower region of the drying chamber (21). According to the dryer (10) according to item 2 of the scope of patent application, the indoor duct (62) of the hot air supply duct (60) is arranged at a predetermined interval in the left-right direction of the drying chamber (21). The belt-shaped member (T) passes between the left and right adjacent indoor ducts (62). According to the dryer (10) according to item 3 of the scope of patent application, the indoor duct (62) is a tubular member having a rectangular cross section, and the ejection hole (63) is in the length direction of the indoor duct (62) They are arranged at predetermined intervals. According to the dryer (10) according to any one of claims 1 to 4, the conveying device (30) includes a first feed disposed on an upstream side of the drying box (20). A device (31) and a second feeding device (32) arranged on the downstream side of the drying box (20), the conveying speed (V2) of the second feeding device (32) being set to the first Speed higher than the conveying speed (V1) of the feeding device (31). According to the dryer (10) according to item 5 of the scope of patent application, between the first feeding device (31) and the second feeding device (32), a belt-shaped member ( T) Tension measuring device (33).