JP2022175840A - Paper passing mechanism of heating dryer - Google Patents

Abstract

To provide a paper passing mechanism of heating dryer capable of easily making a sheet-like object pass thorough a transfer path in a heating chamber in a short period of time.SOLUTION: A pair of endless annular cables 42 are each turnably installed along a meandering transfer path 6 at a position in the vicinity of either side-edge of the sheet-like object via a plurality of guide wheels 41. The guide wheels 41 are pivotally supported in the vicinity of a plurality of corresponding turning guides. An inlet guide wheel 48 is provided in the vicinity of an inlet 8 formed on a side wall 3 of a heating chamber 2. An outlet guide wheel 49 is provided in the vicinity of an outlet 9 formed on the other of the side wall of the heating chamber. A fastener 30 for fastening the front end of the sheet-like object extends between the annular cables on both sides of the transfer path. When the annular cables 42 are rotatably driven, a sheet-like object W whose front end is fastened by the fastener 30 is allowed to pass through the meandering transfer path 6.SELECTED DRAWING: Figure 4

Description

The present invention provides a heat drying apparatus that heats and dries a sheet-like material while conveying it in a conveying path in a heating chamber. It relates to the paper feeding mechanism of the device.

After applying printing or coating to the surface of the continuous sheet-like material, for example, in order to dry it, or to perform annealing of the formed sheet-like material, the sheet-like material is heated while being conveyed in a heating chamber. A heat drying apparatus for drying a sheet is known, for example, from Patent Document 1 below.

In the heat drying apparatus of Patent Document 1, a heating unit such as an electric heater is arranged in a heating chamber, and a plurality of guide rollers and dancer rollers are installed in the vicinity of the heating unit so as to move the sheet material in a substantially meandering manner. is placed in the heating chamber to form a conveying path. The sheet introduced into the heating chamber passes through a plurality of guide rollers and dancer rollers, and is heated and dried while moving along a substantially meandering conveying path.

JP 2014-219114 A

When the heat drying is started, or when the sheet is cut in the middle, the sheet is set through the meandering conveying path in the heating chamber. By work, the sheet-like material is passed through a meandering conveying path and set.

For this reason, the work of manually passing the sheet through the meandering conveying path is complicated and time consuming, and when the temperature of the heating chamber is high, it is necessary to wait until the inside of the heating chamber cools down for safety. Therefore, conventionally, there has been a demand for a paper feeding mechanism for a heat drying apparatus that can easily feed a sheet in a short period of time.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems and to provide a paper passing mechanism of a heating drying apparatus that can easily pass a sheet through a conveying path in a heating chamber in a short time.

The paper passing mechanism of the heat drying apparatus according to the present invention includes:
In the heating chamber provided with the heating means, a plurality of turn-back guide portions are provided at upper and lower positions in the heating chamber, and the continuous sheet-like material introduced into the heating chamber is meandered by the plurality of turn-back guides. In the paper passing mechanism of the heating and drying device, wherein the meandering conveying path for passing the part is disposed in the heating chamber,
Along the meandering conveying path, two endless ring-shaped ropes are rotatably laid via a plurality of guide wheels at positions near both side edges of the sheet-like article, and the guide wheels are: An inlet guide wheel is provided in the vicinity of the inlet provided on the side wall of the heating chamber, and an outlet is provided in the vicinity of the outlet provided on the other side wall of the heating chamber. A guide wheel is provided, a stop jig for stopping the tip of the sheet-like material is provided across the annular ropes on both sides, a driving means is connected to at least one of the guide wheels,
The circular cable is driven to rotate by the driving means, and the sheet-like material whose leading end portion is fixed to the fixing jig is passed along the meandering conveying path.

It should be noted that the above-mentioned paper passing means passing the sheet-like material through the conveying path of the heat drying device, and the sheet-like material is a continuous thin synthetic resin sheet or film, or a sheet or film that is printed or painted. These include a long sheet-like material subjected to the above process, a flexible circuit board, and a display switch substrate such as a panel display switch.

The paper feeding mechanism of this heat drying apparatus is such that when heat drying of the sheet is started or when the sheet is cut in the middle, the leading edge of the sheet to be set is first pushed to both sides at the entrance. is stopped by a fixing jig provided on the annular rope, and the driving means is driven to rotate the annular rope in the movement direction of the sheet-like object. As a result, the leading edge of the sheet held by the fixing jig of the annular cable enters the heating chamber from the inlet, passes through the guide wheels of the plurality of folding guides in order, and the sheet travels along the meandering conveying path. move on. Then, the leading edge of the sheet conveyed to the exit is removed from the fixing jig, and the sheet is conveyed from the entrance to the exit through the meandering conveying path.

In this manner, the sheet can be passed through the meandering conveying path in the heating chamber and set very easily in a short time. In addition, since the operator does not need to enter the heating chamber when setting the sheet, the sheet can be set safely and quickly even when the temperature inside the heating chamber is high.

Here, in the paper passing mechanism, the folding guide portion is provided with a blow-out pipe for floating, and a large number of blow-out holes are provided in the outer peripheral curved surface of the blow-out pipe for floating, and air is blown out from the blow-out holes, causing the above-mentioned The sheet can be folded back and guided in a non-contact manner.

Further, in the sheet passing mechanism, a guide roller is rotatably supported by the folding guide section, and a guide ring of the annular cable is supported coaxially with the guide roller. can be done.

Further, in the above-mentioned paper feeding mechanism, the above-mentioned fixing jig is connected by a long clamping bar that spans between the two annular ropes, and a long movable clamping piece is provided on the clamping bar. It may be rotatably pivotally supported, and the sheet-like object may be pinched between the movable pinching piece and the pinching bar.

Further, in the above-mentioned paper threading mechanism, the above-mentioned fixing jig is connected so that a long mounting rod spans between the two annular ropes, a clip is fixed on the mounting rod, and the clip is It is possible to adopt a configuration in which the sheet-shaped material is sandwiched between the two.

According to the paper threading mechanism of the heating and drying apparatus of the present invention, the end of the sheet inserted from the entrance of the heating chamber is stopped by the fixing jig of the paper threading mechanism, and the guide wheel is rotationally driven to easily and in a short time. , the sheet can be passed through the meandering conveying path in the heating chamber.

1 is a front view of a heat drying device showing an embodiment of the present invention; FIG. It is a right side view of the same heating drying apparatus. It is a top view of the state which removed the upper cover of the same heating drying apparatus. 3 is an enlarged cross-sectional view along IV-IV of FIG. 2; FIG. It is a perspective view of a stop jig. It is a perspective view which shows the fixing jig of other embodiment. FIG. 5 is a cross-sectional view showing a paper passing mechanism of a heat drying apparatus of another embodiment;

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, the housing 1 of the heat drying apparatus is formed in a vertically long rectangular parallelepiped shape, and the side wall 3 of the housing 1 is provided with an inlet 8 for introducing a sheet-like material on one side. An outlet 9 is provided on the other side. A front door 4 is attached to the front part of the housing 1 .

As shown in FIG. 4, a heating chamber 2 is provided in a housing 1, and a meandering conveying path 6 is provided in the heating chamber 2 for meanderingly passing a sheet-like material. A sheet passing mechanism 40 , which will be described later, is arranged along the meandering conveying path 6 from the entrance 8 to the exit 9 so that the sheet passes through.

A plurality of folding guides 10 are provided in the meandering conveying path 6 at upper and lower positions in the heating chamber 2 so as to meander and move the sheet-like material. Blow-out pipes 16 and 17 for floating are provided below and inside the entrance 8 and the exit 9 for guiding the sheet-like material to the inside or leading it out.

The turn-back guide section 10 is composed of levitation blowout pipes 16, 17 at the entrance and exit, two levitation blowout guides 14, 15 at the upper position, and three levitation blowout pipes 11, 12, 13 at the lower position. . The lifting blow pipes 11 to 17 of the turn-back guide portion 10 form a meandering conveying path 6 in which the sheet-like material meanders, floats from the pipes, and is conveyed in a non-contact manner. A driving device for moving the sheet is driven by a winding machine or the like provided outside.

The levitation blowing pipes 11 to 17 are provided with a large number of holes in the lower outer peripheral surface of the pipe, and an air supply duct from the blower 7 is connected to the end of the pipe. Air supplied from the blower 7 is blown out from holes provided on the circumferential surface of the pipe. The levitation blowing pipes 11 to 17 are formed in a semi-cylindrical shape or a quarter-cylindrical shape, and a large number of holes are drilled in the circumference surface thereof, and air is blown out from the holes to the outer circumference and passes through the outer circumference of the pipe. While floating and guiding the sheet-like material to be folded, the folded part is passed.

In this way, the blow-out pipes 11 to 17 for surfacing are arranged at the upper portion, the lower portion, and the entrance/exit of the folded guide portion 10, so that when the sheet-like material passes through the folded guide portion 10, it is separated from the pipes. to avoid contact between the sheet and the pipe.

As shown in FIG. 4, plate-like heating means 20 are provided in the heating chamber 2 vertically at intervals. The heating means 20 consists of a first heater plate 21, a second heater plate 22, a third heater plate 23, a fourth heater plate 24, and a fifth heater plate 25. , and the second heater plate 22 is vertically attached directly below the levitation blowing pipe 13 . Similarly, the third heater plate 23 is attached just above the levitation blow-out pipe 12, the fourth heater plate 24 is attached just below the levitation blow-out pipe 15, and the fifth heater plate 25 is attached to the levitation blow-out pipe. It is mounted vertically just above the pipe 13 .

For the first heater plate 21, the second heater plate 22, the third heater plate 23, the fourth heater plate 24, and the fifth heater plate 25, for example, a carbon heater, a graphite heater, a sheathed heater, a ceramic heater, or the like is used. A far-infrared panel heater, a PTC sheet heater, or the like can be used. For example, when using a graphite heater with a graphite carbon sheet heating element for the heater plate, it can be easily formed into a plate shape, and its surface is coated with graphite or the like for black treatment to generate heat and dissipate heat. You can increase the effect.

In this way, the folded guide portion is arranged such that the upper two floating blow-out pipes 14, 15 and the lower three floating blow-out pipes 11, 12, 13 are alternately shifted in vertical position. As shown in FIG. 4, 10 forms a vertically meandering meandering conveying path 6 for the sheet material moving in the heating chamber 2 . Heating means 20, that is, a first heater plate 21, a second heater plate 22, a third heater plate 23, a fourth heater plate 24, and a fifth heater plate 25 are arranged on both sides of the straight portion of the meandering conveying path 6. be.

With this configuration, the meandering transport path 6 can move a very long sheet-like material into the heating chamber 2 while keeping it there for a sufficient time necessary for drying. Further, as a result, the housing 1 having the heating chamber 2 can be made very compact, and the space for installing the device can be greatly reduced. Furthermore, the heating means 20 are arranged close to both sides of the straight portion of the sheet moving on the meandering conveying path 6, and heat and dry the sheet efficiently with less power consumption.

4 and 5, the paper passing mechanism 40 for passing the sheet through the meandering conveying path 6 at the start of heat drying or the like has two annular ropes 42 on both sides of the meandering conveying path 6. It is laid along both sides from the entrance 8 to the exit 9, and between the annular ropes 42 on both sides, a fixing jig 30 for stopping the sheet-like material is attached. The two annular cords 42 are made of endless chains, wires, etc., and are laid over a large number of guide wheels 41 such as sprockets, pulleys and guide rollers.

As shown in FIG. 4, the guide wheels 41 of the paper passing mechanism 40 are arranged in the vicinity of the floating blow-off pipes 11 to 17. Further, an entrance guide wheel 48 is provided at the entrance 8, and an exit guide wheel 49 is provided at the entrance 8. is provided at the outlet 9 . An entry guide wheel 48 is positioned within the entry 8 to advance the stop 30 of the loop 42 to the entry 8; , is placed in the outlet 9 .

The guide wheel 41 , the inlet guide wheel 48 and the outlet guide wheel 49 at each position are provided by rotatably supporting a sprocket or the like, and are supported on both sides of the meandering transport path 6 . When the two annular ropes 42 are chains, the guide wheels 41 are sprockets, and when wires are used for the annular ropes 42, the guide wheels 41 are pulleys and guide rollers. A driving means 43 using, for example, an electric motor is connected to any one pair of guide wheels 41, and the guide wheels 41 are rotationally driven by the driving means 43, and the annular cable 42 is rotationally driven at a low speed. As the driving means 43, a manual rotating machine for manually rotating a crank or the like can be used in addition to the electric motor.

As shown in FIG. 5, the fixing jig 30 for fixing the tip of the sheet-like material is attached by spanning between the ring-shaped cords 42 on both sides. The fixing jig 30 in the example of FIG. is pivotally supported so as to be openable and closable. The tip of the sheet W is held between the holding bar 31 and the movable holding piece 32 . As shown in FIG. 4, a plurality of such fixing jigs 30 can be mounted on the annular rope 42 with appropriate intervals.

FIG. 6 shows another embodiment of a stop jig 30A. The fixing jig 30A is attached by extending one mounting rod 33 (square rod) between the annular ropes 42 on both sides. The distal end portion is configured to be clamped by a clip 34 . Alternatively, as a simple fixing jig, a double-sided adhesive tape may be adhered onto the mounting rod, and the tip of the sheet W may be adhered onto the double-sided adhesive tape.

Next, the operation of the paper passing mechanism of the heat drying apparatus having the above configuration will be described. The sheet-like material W to be dried or heat-treated is a continuous thin synthetic resin sheet or film, or a long sheet-like material printed or painted on a sheet or film, a flexible circuit board, and a panel display switch. or a continuous metal foil or synthetic resin sheet that is subjected to annealing.

A continuous sheet-like material W is wound around an unwinder (not shown). Prior to the start of the heat drying process, the leading end of the sheet W is pulled out from the unwinder and inserted into the heating chamber 2 from the entrance 8 of the heat drying apparatus as shown in FIG. The tip is fixed to the fixing jig 30 . At this time, the position of the fixing jig 30 of the paper passing mechanism 40 is moved to the position of the entrance 8 by driving the driving means 43 and stopped. In this state, the leading end of the sheet W is clamped by the clamping jig 30, and the driving means 43 is driven to rotate the guide wheel 41, thereby rotating the annular cable 42 in the direction of the arrow in FIG. move.

At this time, the front end of the sheet-like material W is inserted from the entrance 8 with the surface such as the printed surface facing upward due to the rotational driving of the ring-shaped cable 42, and proceeds downward from the levitation blow-out pipe 16 of the entrance 8 to the bottom. Turn back the turn-back guide portion 10 of the blow-out pipe 11 for surfacing on the side and advance upward. As a result, the sheet W is hung from the floating blow-out pipe 16 to the lower floating blow-out pipe 11 .

Further, the guide wheel 41 and the annular cable 42 of the paper passing mechanism 40 are driven to rotate, so that the leading edge of the sheet W held by the holding jig 30 rises and reaches the upper blow-out pipe 14 for floating. , and then go down. Then, the sheet-like material W reaches the blow-off pipe 12 for floating on the lower side, folds there, and advances upward. Next, the sheet-like object W reaches the blow-out pipe 15 for floating on the upper side, folds there, and advances downward.

Further, the leading end of the sheet-like material W stopped by the fixing jig 30 reaches the lower surface blow-out pipe 13 for surfacing, folds there, advances upward, and finally reaches a position near the exit 9 for surfacing. It passes over the blowout pipe 17 and is led out from the outlet 9 .

As described above, at the start of drying by heating, the sheet-like material W passes through the floating blow-off pipes 11 to 17 of the turn-back guide section 10 in the heating chamber 2 by the operation of the paper passing mechanism 40, and is conveyed along the meandering conveying path 6. It is easily set through The leading end of the sheet W drawn out from the outlet 9 is connected to a winder (not shown).

As described above, even in the meandering conveying path 6 in the heating chamber 2, the sheet W can be passed through the floating blow-out pipes 11 to 17 of the turn-back guide portion 10 of the meandering conveying path 6 very easily and in a short time. Paper can be easily set. In addition, since the worker does not need to enter the heating chamber 2 when setting the sheet W, the sheet W can be set safely and quickly even when the temperature inside the heating chamber 2 is high. .

FIG. 7 shows a paper feeding mechanism of a heat drying apparatus according to another embodiment. As shown in FIG. 7, in this heat drying apparatus, guide rollers 64 and 65 are arranged at an upper position as a folding guide portion 60 for the sheet-like material W in a heating chamber 52 of a housing 51. 63 is arranged at the lower position, and guide rollers 66 and 67 are arranged near the inlet 58 and the outlet 59 .

As shown in FIG. 7, upper guide rollers 64 and 65 and lower guide rollers 61 to 63 form a meandering conveying path 56 for the sheet W. guide rollers 61 to 67, and meanders up and down as shown in FIG. Guide rollers 61 to 66 are rotatably supported at respective positions.

Further, a large-diameter guide wheel 71 of the paper passing mechanism 70 is rotatably supported coaxially with the guide rollers 61 to 65 arranged in the folding guide portion 60 . In addition to the guide wheels 71, eight small guide wheels 73 of the paper passing mechanism 70 are arranged near the entrance, near the exit, and in the upper part of the heating chamber 52, and are rotatably supported.

These guide wheels 71 and small guide wheels 73 are arranged one by one on both sides of the meandering transport path 56 in a side view of the housing 51 . Annular ropes 72 are laid over the guide wheels 71 and the small guide wheels 73 on both sides, and a fixing jig 80 as shown in FIG. 5 or 6 is connected between the annular ropes 72 on both sides, The leading edge of the sheet-like material W is clamped and stopped by the fixing jig 80 . The two annular ropes 72 are made of endless wires or the like, and are laid over a plurality of guide wheels 71 and small guide wheels 73 such as pulleys and guide rollers.

A drive means using, for example, an electric motor is connected to any one pair of guide wheels 71 or small guide wheels 73, the guide wheels 71 and the like are rotationally driven by the drive means, and the annular cable 72 is rotationally driven at a low speed. be. In addition to the electric motor, a manual rotating machine that manually rotates a crank or the like can be used as the driving means. The heating chamber 52 has a structure in which hot air generated by a hot air generator (not shown) is sent into the heating chamber 52 by a blower to heat the inside.

Next, the operation of the paper feeding mechanism of the heat drying apparatus having the above configuration will be described. Prior to starting the heat drying process, the leading end of the sheet W is pulled out from the unwinder and inserted into the heating chamber 52 from the entrance 58 of the heat drying apparatus as shown in FIG. At this time, the position of the stopper jig 80 of the paper passing mechanism 70 is moved to the position of the entrance 8 by driving the driving means and stopped.

In this state, the leading end of the sheet W is clamped by the clamping jig 80, and the driving means is driven to rotate the annular cable 72 in the direction of the arrow in FIG. At this time, the fixing jig 80 that has stopped the leading end of the sheet W enters the inside from the entrance 8, and moves from the small guide wheel 73 near the guide roller 66 to the guide wheel 71 coaxial with the guide roller 61 below. proceed to As a result, the sheet-like material W is passed from the guide roller 66 to the guide roller 61 and advanced.

Furthermore, the stopping jig 80 is turned upward from the guide wheel 71 coaxial with the guide roller 61 and advanced to the guide ring 71 coaxial with the guide roller 64 at the upper position. It folds downward from the guide wheel 71 coaxial with , advances to the guide wheel 71 coaxial with the guide roller 62 at the lower position, and folds the guide wheel 71 upward. As a result, the sheet-like material W passes through the guide roller 61, the guide roller 64, and is hooked on the guide roller 62 to advance.

In this manner, the leading edge of the sheet W passes through the guide rollers 65 and 63, passes through the guide roller 67 near the exit 59, and is delivered from the exit 59 to the outside. Thus, the sheet-like material W is passed over the guide rollers 61 to 67 along the meandering conveying path 56 inside the heating chamber 52 . In this state, the driving of the guide wheels of the paper passing mechanism 70 is stopped, the leading end of the sheet-like material W appearing at the exit 59 is pulled and connected to a winder (not shown), and heating of the heating chamber 52 is started. . Hot air is supplied into the heating chamber 52 and drying by heating is performed in the heating chamber 52 .

1 Case 2 Heating Chamber 3 Side Wall 4 Front Door 6 Meandering Conveying Path 7 Blower 8 Inlet 9 Outlet 10 Folding Guide Part 11 Blowout Pipe for Surfacing 12 Blowout Pipe for Surfacing 13 Blowout Pipe for Surfacing 14 Blowout Pipe for Surfacing 15 Blowout Pipe for Surfacing REFERENCE SIGNS LIST 16 Levitating blow pipe 17 Levitating blow pipe 20 Heating means 21 First heater plate 22 Second heater plate 23 Third heater plate 24 Fourth heater plate 25 Fifth heater plate 30 Fixing jig 31 Clamping bar 32 Movable clamping piece 33 Mounting bar 34 Clip 40 Paper threading mechanism 41 Guide wheel 42 Annular rope 43 Driving means 48 Entrance guide wheel 49 Exit guide wheel 51 Case 52 Heating chamber 56 Meandering conveying path 58 Entrance 59 Exit 60 Folding guide part 61 Guide roller 62 Guide roller 64 guide roller 65 guide roller 66 guide roller 67 guide roller 70 paper passing mechanism 71 guide wheel 72 annular cord 73 small guide wheel 80 stop jig

Claims (5)

In the heating chamber provided with the heating means, a plurality of turn-back guide portions are provided at upper and lower positions in the heating chamber, and the continuous sheet-like material introduced into the heating chamber is meandered by the plurality of turn-back guides. In the paper passing mechanism of the heating and drying device, wherein the meandering conveying path for passing the part is disposed in the heating chamber,
Along the meandering conveying path, two endless ring-shaped ropes are rotatably laid via a plurality of guide wheels at positions near both side edges of the sheet-like article, and the guide wheels are: An inlet guide wheel is provided in the vicinity of the inlet provided on the side wall of the heating chamber, and an outlet is provided in the vicinity of the outlet provided on the other side wall of the heating chamber. A guide wheel is provided, a stop jig for stopping the tip of the sheet-like material is provided across the annular ropes on both sides, a driving means is connected to at least one of the guide wheels,
A paper feeding mechanism for a heating and drying apparatus, characterized in that the circular cable is rotationally driven by the driving means, and the sheet-like material whose leading end portion is fixed to the fixing jig is passed along the meandering conveying path. . A blowout pipe for surfacing is provided in the folded guide portion, and a large number of blowout holes are provided in the outer peripheral curved surface of the blowout pipe for surfacing, and the blowout pipe for surfacing blows air from the blowout holes, 2. A paper feeding mechanism for a heat drying apparatus according to claim 1, wherein the sheet-like material is folded back and guided in a non-contact manner. 2. The drying method according to claim 1, wherein a guide roller is rotatably supported on said turn-back guide portion, and said guide ring of said annular cable is supported coaxially with said guide roller. Paper threading mechanism of the device. The fixing jig is connected by a long clamping rod that bridges between the two annular ropes, and a long movable clamping piece is rotatably supported on the clamping rod. 2. A paper feeding mechanism for a heat drying apparatus according to claim 1, wherein the sheet material is held between the holding piece and the holding bar. The fixing jig is characterized in that a long mounting rod is connected by spanning between the two annular ropes, a clip is fixed on the mounting rod, and the clip clamps the sheet-like object. 2. The paper feeding mechanism of the heat drying apparatus according to claim 1.

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