JPH082807Y2 - Sheet conveyance guide device with liquid applied on one side - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a sheet conveyance guide device having a liquid material applied to one side thereof.

[Prior Art] Generally, when manufacturing a magnetic tape, as shown in FIG. 5, one side of a base film 2 fed from a feeding roll 1 is coated with a magnetic recording liquid containing magnetic powder by a coating machine 3. Further, after uniformizing the film thickness of the magnetic recording liquid on the base film 2 and orienting so as to align the orientation of the needle-shaped magnetic powder, it is dried by the dryer 4 and then wound into a roll. It has become. In FIG. 5, reference numeral 5 is a guide roll for receiving the base film 2 being conveyed.

[Problems to be Solved by the Invention] However, in the conventional case, the guide roll 5 cannot receive the coating surface of the base film 2 coated with the magnetic recording liquid to guide the conveyance.
As shown in the drawing, the surface of the base film 2 on which the magnetic recording liquid is not applied is faced downward, supported by the guide rolls 5 and conveyed in a straight line while being introduced into the dryer 4 to be dried. Is the current situation. Therefore, the dryer 4
Requires a length for the magnetic recording liquid on the base film 2 to be sufficiently dried as the furnace length, resulting in a large shape, a large installation area occupancy rate, and space saving and compact size in recent years. It is an obstacle to achieving

Therefore, in view of the above circumstances, the present invention can be conveyed while meandering without receiving the liquid-coated surface of the sheet in various kinds of processing such as drying processing, and even if the sheet is meandered, it can be conveyed on one side. It is an object of the present invention to provide a sheet conveyance guide device in which a liquid substance is applied to one side of the sheet, which can be conveyed without damaging the liquid substance applied to the sheet, and can also be downsized in various apparatuses.

"Means and Actions for Solving the Problems" The present invention has been made to achieve the above-mentioned object. An endless belt made of a magnetic material is provided between a main feed roll and a magnet roll by a magnetic force of the magnet roll. The endless belt is rotated while being held in a U-shape, and at this time, the surface of the sheet on which the liquid substance is not applied is adsorbed to and held by the U-shaped inner surface of the endless belt through the perforations of the endless belt by a suction device. The sheet is guided along with the rotation of the belt.

[Embodiment] An embodiment in which the sheet conveyance guide device having a liquid material coated on one surface according to the present invention is used for manufacturing a magnetic recording medium will be described below with reference to the drawings. In FIG. 1, 11 is a feeding roll around which the base film 12 is wound, 13 is a take-up roll on which the base film 12 is wound after a magnetic recording layer is laminated and various treatments are applied, and further dried. It is a roll. The base film 12 delivered from the delivery roll 11 is introduced into the coating machine 14, and the magnetic powder and the base film 12 are applied to one surface of the base film 12 in the coating machine 14.
A magnetic recording liquid containing a binder or the like for sticking is applied. The base film 12 may be made of various materials such as paper, in addition to the synthetic resin film such as polyester. After the magnetic recording liquid is applied, the base film 12 is oriented by an orienting device so as to make the coating thickness of the magnetic recording liquid uniform with a smoother and further align the orientation of the needle-like magnetic powder contained in the magnetic recording liquid. Then, it is sent to the dryer 15. The dryer 15 has a proper number of guide rolls 16 and the transport guide device 17 of the present invention arranged in a zigzag manner, while transporting the base film 12 coated with the magnetic recording liquid on one side in a meandering manner. The magnetic recording liquid is dried. When the base film 12 is transported in a meandering manner in the dryer 15, the magnetic recording liquid applied to one surface of the base film 12 comes into contact with the guide roll and is peeled from the base film 12 so as not to be wiped off.
17 receives the base film 12 and guides the transportation. The transport guide device 17 is, as shown in FIG.
Main feed rolls 18 and 19 are rotatably arranged at appropriate intervals. One of the main feed rolls 19 has a rotary shaft 19a.
Is connected to the drive shaft 20a of the motor 20. At this time, it goes without saying that the drive shaft 20a of the motor 20 can be connected by appropriately interposing a speed reducer. The other main feed roll 18 is supported on the frame so as to freely rotate. Engagement protrusions 18b and 19b that fit into feed holes 22 formed in rows at both ends of an endless belt 21 to be described later are provided at both ends of the surfaces of the main feed rolls 18 and 19, respectively. The endless belt 21 has a large number of intake holes 21 in an area that does not extend beyond the adsorption area that receives the base film 12.
a is pierced and is wound around the main feed rolls 18 and 19 so as to form a U shape, but the inner surface of the endless belt 21, which is the feed side of the U-shaped concave side base film 12, is The material is made of a magnetic material, for example, stainless steel exhibiting magnetism so as to be held by the magnetic force of an appropriate number of magnet rolls 23. The magnet roll 23 is rotatably supported by the frame. On the return side of the endless belt 21 wound in a U-shape between the main feed rolls 18 and 19, a guide roll 24 having no ordinary magnet guides the rotation of the endless belt 21. It is sufficient to carry out the U-shaped endless belt 21 around the main feed rolls 18 and 19 and a suitable number of magnet rolls 23 without the above. Each magnet roll 23 has a third
As shown in the figure, a plurality of ferromagnetic plates 26 are fixedly mounted on the rotating shaft 25 at regular intervals in the axial direction, and the polarities of the surface between the ferromagnetic plates 26 are N pole and S pole. , The ring-shaped magnets 27 are attached so as to alternately appear as N pole and S pole. Further, a non-magnetic shell 28 is attached so as to cover each magnet 27 and the ferromagnetic plate 26. The shell 28 uses a non-magnetic thin plate such as stainless steel as an exterior material.
It should be thin enough to allow the magnetic force of 27 to pass through, and to have sufficient mechanical strength. Further, as shown in FIG. 4, it is desirable that the magnet rolls 23 be arranged in a zigzag pattern so that the magnets 27 do not overlap each other at the same position and are not adjacent to each other. The reason for arranging them in a zigzag manner is that the magnetic force of the magnet 27 becomes maximum at the position of the ferromagnetic plate 26 and becomes minimum at the boundary between the two poles of the magnet 27.
By adsorbing and holding the endless belt 21 in a zigzag manner at the position of the maximum magnetic force of the magnet 27 without adsorbing and holding the same position with respect to the feeding direction, the entire endless belt 21 can be held in a well-balanced manner. Moreover, the zigzag arrangement as described above, the endless belt by the magnet 27
It is also possible to prevent the inner surface of the endless belt from being scratched in a striped pattern due to the imbalance of the adsorption coercive force of 21. On the other hand, as shown in FIG. 2, the return side of the endless belt 21 is covered with a duct 29. The duct 29 has an exhaust port 30 and connects the exhaust port 30 to a suction device. The suction device used is generally widely used.
In FIG. 1, 31 is a guide roll for receiving one surface of the base frame 12 not coated with the magnetic recording liquid. The engagement projections 18b and 19b and the feed hole 22 shown in FIG.
Is not necessarily provided, and the endless belt 21 does not inadvertently shift its position in the axial direction of the main feed rolls 18 and 19 and the magnet roll 23.
If it can be rotated by 19 rotations, it need not be provided.
In addition to the engaging projections 18b and 19b and the feed hole 22, flanges are provided at both ends of the main feed rolls 18 and 19 to receive the endless belt 21 between the flanges so as not to be displaced in the axial direction. It is also possible to use other forms such as rotating by rotating.

Then, as shown in FIG. 1, after coating the magnetic recording liquid on the one side of the base film 12 by the coating machine 14, the coating thickness of the magnetic recording liquid is made uniform by a smoother, and the magnetic recording liquid in the magnetic recording liquid is further aligned by the aligning device. The acicular magnetic powders are oriented so as to be aligned, and then introduced into the dryer 15. In the dryer 15, the guide film 16 and the transfer guide device 17 dry the base film 12 coated with the magnetic recording liquid on one surface thereof in a meandering manner as described above. In other words, the base film 12
First, the one side not coated with the magnetic recording liquid is the guide roll.
It is supported by 16 and fed to the lower conveyance guide device 17. In the transport guide device 17, the main feed roll shown in FIG.
19 is rotated at the same peripheral speed as the conveying speed of the base film 12 by the motor 20, and the endless belt 21 is moved to the conveying speed of the base film 12 by the engagement between the engaging protrusion 19b of the main feed roll 19 and the feed hole 22. Rotate at the same speed. Since the endless belt 21 is made of a magnetic material, the feed side of the base film 12 is attracted by the magnetic force of a large number of magnet rolls 23 to rotate while being held in a U-shape.
The return side of the endless belt 21 is supported by a guide roll 24 and rotates. On the other hand, since the suction between the main feed rolls 18 and 19 is sucked by the suction device, the concave feed side of the endless belt 21 is sucked through the suction holes 21a of the endless belt 21 so that the magnetic force of the base film 12 is reduced. One side of the recording liquid which has not been applied is adsorbed and conveyed as the endless belt 21 rotates. Therefore, the endless belt 21 can receive and send out the base film 12 without any contact with the surface of the base film 12 coated with the magnetic recording liquid. Therefore, by combining a plurality of guide rolls 16 and conveyance guide devices 17, as shown in FIG. 1, the base film 12 having the magnetic recording liquid applied on one side can be conveyed in a meandering manner, Moreover, since the roll does not come into contact with the magnetic recording liquid of the base film 12 even by such a meandering conveyance, the magnetic recording liquid is not peeled off by contact with the roll, wiped or dropped.

The transport guide device 17 according to the present invention can be applied not only to the guide of the base film 12 at the time of manufacturing the magnetic recording medium, but also to the one that transports and guides various sheets having various liquids applied on one side. Of course.

[Advantage of Invention] As described above, according to the sheet conveyance guide device of one aspect of the present invention in which a liquid material is applied, it is possible to change the direction of the sheet toward the surface on which the liquid material is applied and convey the sheet. It is possible to guide the direction change without touching one side of the sheet coated with the liquid material, so that the liquid material coated on one side of the sheet is not damaged such as falling off. If you use multiple combinations of transport guide devices,
Since the sheet coated with the liquid material on one side can be conveyed in a meandering shape, it is expected that the apparatus for carrying out the processing such as drying while being conveyed can be downsized, which is advantageous in use.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example in which the sheet conveying guide device of one embodiment of the present invention in which a liquid material is applied to a sheet is applied to a drying line in a manufacturing process of a magnetic recording medium, and FIG. FIG. 3 is a perspective view showing the structure, FIG. 3 is a cross-sectional view of the magnet roll, FIG. 4 is a perspective view showing the arrangement relationship of the magnet rolls, and FIG. 5 is a structure diagram showing the manufacturing process of the conventional magnetic recording medium. 12 …… Base film, 14 …… Applicator 15 …… Dryer 17 …… Transport guide device 18,19 …… Main feed roll 21 …… Endless belt 21a …… Intake hole 23 …… Magnet roll 29 …… Duct, 30 ... Exhaust port

Claims (1)

[Scope of utility model registration request] 1. A large number of U-shaped magnet rolls are arranged between rotating main feed rolls arranged at appropriate intervals, and the main feed roll and the magnet rolls are made of a magnetic material and are in a liquid state of a sheet. Characterized in that it comprises a suction device that hangs a porous endless belt that receives one surface on the side opposite to the surface on which the quality is applied, and that sucks the sheet on the endless belt between the main feed rolls in the direction to adsorb it. A sheet conveyance guide device whose one side is coated with a liquid material.