JP4264881B2 - Device for applying adhesive to the core - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adhesive for a winding core in which a liquid adhesive for adhering the leading end of the belt-like sheet is applied to a portion of the winding core that is mounted on the winding device of the belt-like sheet facing the touch roller for a required length. It is related with a grant apparatus.
[0002]
[Prior art]
In the belt-sheet take-up device, when the winding roll is completed by winding a predetermined amount of the belt-like sheet around the core, the winding is stopped, and after the belt-like sheet connected to the winding roll is cut, Remove the take-up roll from the take-up device, attach a new core to the take-up device instead, and bond the tip of the belt-like sheet remaining in the take-up device to the new core before resuming the take-up operation. It is common to do.
[0003]
Conventionally, as a device for applying an adhesive to the core, an adhesive for bonding the leading end of the belt-like sheet to the core is used to automatically supply the core to the core chuck of the winding device. Some of the core supply mechanisms include a brush made of a sponge-like porous material so as to correspond to two locations in the longitudinal direction of the core. This device for applying an adhesive to a core applies an adhesive so as to make one round of the outer peripheral surface of the core by rotating the core by pressing a brush against two locations in the longitudinal direction of the core. To do. The core coated with this adhesive is supplied and mounted on a winding device by a core supply mechanism (Japanese Patent Laid-Open No. 10-35959). However, brushes tend to clog due to the dryness of the adhesive, and frequent maintenance is required. Further, when this adhesive application device is used, the belt-like sheet is bonded at two locations in the longitudinal direction of the winding core, so that immediately after the winding starts, the winding tension is concentrated on the belt-bonding portion, and the belt-like sheet is wrinkled. It tends to occur and the take-up roll tends to be defective.
[0004]
Therefore, in order to prevent wrinkles from occurring in the belt-like sheet immediately after the start of winding, and to minimize the waste of the adhesive-applied portion of the belt-like sheet when the belt-like sheet is rewound from the take-up roll. It is desirable to apply to the entire length of the core with a certain width. In order to automate the work of bonding the leading end of the belt-like sheet to the outer peripheral surface of the winding core, it is desirable to apply an adhesive to the portion of the winding core mounted on the winding device that faces the touch roller. That is, if an adhesive is applied to the part of the core attached to the winding device that faces the touch roller, when the new core is placed at the winding start position, the adhesive application part of the new core is It is pressed against the tip of the belt-like sheet held on the touch roller and automatically bonded.
[0005]
Conventionally, as an apparatus for applying an adhesive to a winding core that applies a predetermined length with a certain width in the longitudinal direction of the winding core, a gluing mechanism in which an application roller is provided on the top of the glue pan is wound by a glue pan driving mechanism. While moving in the longitudinal direction of the core, the application roller is lifted together with the glue pan by the driving means and the application roller is pressed against the lower surface of the winding core to rotate the application roller, and the application roller rotates the glue pan. Is applied to the lower surface of the core (utility model registration No. 2577041).
[0006]
[Problems to be solved by the invention]
However, this apparatus for applying an adhesive to the core causes the following problems. That is, since the adhesive can be applied only to the lower surface of the core mounted on the winding device, the core is not rotated after the adhesive is applied in order to face the adhesive-applied portion of the core to the touch roller. It takes time and effort. Also, since the application roller is raised and lowered together with the glue pan and pressed against the core, the application roller cannot be moved up and down quickly, and if the moving speed in the longitudinal direction of the core is increased, the application of the adhesive to the core starts. Since the position and the application stop position are inaccurate, and the application of the adhesive tends to be uncertain, the application speed cannot be increased.
[0007]
In view of this, the present invention provides a relatively fast and accurate liquid adhesive for adhering the leading end of the belt-like sheet to the required length of the portion of the winding core that is mounted on the belt winding device that faces the touch roller. It is an object to provide an apparatus for applying an adhesive to a core that can be applied to the core.
[0008]
[Means for Solving the Problems]
The present invention comprises a glue applicator movably mounted on a support bar provided in parallel with a winding core, and a reciprocating drive mechanism capable of reciprocating the glue applicator along the support bar; A gluing device, a container for storing an adhesive, a support member having one end directed to the core and the other end inserted from above into the container, and an outer periphery of the core attached to one end of the support member An application roller capable of rolling on the surface in the longitudinal direction of the core, a guide pulley attached to the other end of the support member, a pair of intermediate pulleys attached near the corner of the support member, and the guide pulley An endless belt hung on the guide pulley, the intermediate pulley and the application pulley for supplying the adhesive placed in the container so as to be immersed to the outer peripheral surface of the application roller, and a core of the application roller Press on the outer surface of the timely Of order, characterized in that assumed and a reciprocating mechanism of the support member.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic plan view for explaining the entire apparatus for applying an adhesive to a core according to an embodiment of the present invention, FIG. 2 is a schematic front view of the apparatus for applying an adhesive to the core shown in FIG. FIG. 3 is a schematic side view of the apparatus for applying an adhesive to the core shown in FIG. The adhesive application device 1 applies a liquid adhesive G for adhering the leading end of the belt-like sheet to a portion facing the touch roller 3 of the winding core C that is mounted on the winding device 2 of the belt-like sheet S for a required length. A pasting device 5 movably mounted on a support bar 4 provided parallel to the core C, and a reciprocating drive mechanism 6 capable of reciprocating the pasting device 5 along the support bar 4. Prepare.
[0010]
In the case of this embodiment, the belt-like sheet S is obtained by dividing a wide belt-like sheet into a required width while rewinding it in a sheet division winding device, and the winding device 2 is arranged at the front and rear in the sheet division winding device. It is one of the winding apparatuses currently used. The winding device 2 mounts the winding core C for each belt-like sheet S on each pair of winding arms 7 so as to be aligned on the same central axis, and rotates the winding core C by a winding motor 8. A plurality of belt-like sheets S supplied from upstream can be simultaneously wound around each core C, and the touch roller 3 is wound around the core C during the winding operation. While making it contact with the winding roll formed of the sheet | seat S, the space | interval of the winding core C and the touch roller 3 can be adjusted automatically according to the increase in the winding roll radius. When the winding roll is completed, the winding motor 8 is stopped and the supply of the belt-like sheet S to the winding device 2 is stopped, the belt-like sheet S is cut in the width direction, and the winding roll is removed from the winding arm 7. After the new winding core C is mounted on the winding arm 7, the new winding core C and the touch roller are brought close to each other as shown in FIG.
[0011]
4 is a plan view of the pasting device, and FIG. 5 is a cross-sectional view of the cross section along the cutting line BB in FIG. The gluing device 5 includes a container 11 in which the adhesive G is put, a bowl-shaped support member 12 having one end directed to the core C and the other end inserted into the container 11 from above, and one end of the support member 12. The application roller 13 that can be rolled on the outer peripheral surface of the core C in the longitudinal direction of the core, the guide pulley 14 that is attached to the other end of the support member 12, and the support member 12 near the corner of the back. The guide pulley 14, the intermediate pulley 15, and the application pulley 13 for supplying the pair of attached intermediate pulleys 15 and the adhesive G placed in the container 11 so that the guide pulley 14 is immersed to the outer peripheral surface of the application roller 13. And an advancing / retreating mechanism 17 of the support member 12 for pressing the application roller 13 against the outer peripheral surface of the winding core C in a timely manner.
[0012]
The advance / retreat mechanism 17 includes a movable arm 18 that holds the support member 12 toward the core C so as to be able to advance and retract, and a fluid pressure cylinder device 19 for driving the movable arm 18. The movable arm 18 is attached to a shaft 21 fixed to the base 20 of the glue applicator 5 so as to be swingable about the shaft 21, and the cylinder 19 b of the fluid pressure cylinder device 19 is attached to the base 20 via a bracket 19 c. The support member 12 is fixed to one end of the movable arm 18, and the piston rod 19a of the fluid pressure cylinder device 19 is connected to the other end of the movable arm 18 by a known connector 19d.
[0013]
A pressure fluid is received from a hose (not shown) accommodated in a flexible duct 22a for moving the piston rod 19a of the fluid pressure cylinder device 19 forward and backward while the glue applier 5 moves along the support bar 4. An electromagnetic switching valve 22 is attached to the base 20, the electromagnetic switching valve 22 and the fluid pressure cylinder device 12 are connected by a conduit (not shown), and an electric signal is transmitted through an electric wire (not shown) accommodated in the duct 22a. Is sent to the electromagnetic switching valve 22 to enable the switching operation.
[0014]
When the piston rod 19a of the fluid pressure cylinder device 19 is retracted, the movable arm 18 turns about the shaft 21 in the direction indicated by the arrow A2 in FIG. 4, and the coating roller 13 is wound as shown by the solid line in FIG. Press against the lead C. When the fluid pressure cylinder device 19 is advanced from the piston rod 19a, the movable arm 18 turns in the direction opposite to the direction indicated by the arrow A2 in FIG. 4, and the application roller 13 is wound as shown by the chain line in FIG. Retreat from lead C.
[0015]
The application roller 13 has an outer peripheral surface, that is, a roller surface, having a width corresponding to the application width of the adhesive G so that the adhesive G can be applied to the outer peripheral surface of the core C with a predetermined width. Here, a rubber ring 12a is attached to the roller surface of the application roller 13 in order to increase the frictional force with the core C. The endless belt 16 may be made of a material having a high coefficient of friction, such as rubber, without attaching the rubber ring 12a, and the endless belt 16 may be brought into direct contact with the core C on the application roller 13. .
[0016]
As shown in FIG. 2, the reciprocating drive mechanism 6 includes a pulley 23 and a pulley 24 provided in the vicinity of both ends of the support bar 4, a pulley 20 and a pulley 24 that are parallel to each other, and both ends at the base 20 of the gluing device 5. And a motor 26 that can selectively rotate one pulley 23 in both forward and reverse directions. The base 20 is movably mounted on a guide member 4a provided on the support bar 4, and the motor 26 is activated when the adhesive is applied to rotate the pulley 23 in the clockwise direction in FIG. When the support bar 4 moves from the standby position on the pulley 23 side to the movement limit on the pulley 24 side, the pulley 23 is driven to rotate counterclockwise, and stops when the glue applicator 5 returns to the standby position again.
[0017]
The container 11 is attached to the base 20 and can store, for example, vinyl acetate glue, starch glue, or other suitable viscous liquid as the adhesive G. In order to prevent the container 11 from interfering with the support member 12 moving toward the winding core C, the upper end of the container 11 is opened, and the space between the lower portion of the support member 12 inserted into the container 11 and the wall surface of the container 11 is opened. Is open enough.
[0018]
In this apparatus 1 for applying an adhesive to a winding core, when an adhesive that is relatively easy to dry is used, the strip sheet winding device is suspended from the start of winding to the completion of the winding roll. In order to prevent the adhesive G on the application roller 13 from being dried and the application to the first core C from being uncertain, for example, the moving application roller 13 is engaged as shown in FIG. An engagement body 27 having a predetermined length is provided along the traveling path near the standby position of the glue applicator 5 so that they can be combined. The engaging body 27 has a base portion 27 a fixed to the support bar 4 and is formed so as not to hinder the travel of the gluing device 5.
[0019]
Further, in order to adjust the amount of the adhesive G supplied to the application roller 13 by the circulation of the endless belt 16, a scraper 28 for scraping off the unnecessary adhesive G attached to the endless belt 16 is provided on the support member 12. It is installed.
[0020]
Also, during the winding operation, the glue applicator 5 is below the adhesive application position shown in FIG. 3 where the roller surface of the application roller 12 approaches the application portion of the adhesive G on the outer peripheral surface of the core C. In order to be able to retreat to a retreat position that does not interfere with the take-up roll of the belt-like sheet, the support bar 4 is provided so as to be movable up and down.
[0021]
In order to apply the adhesive G for a required length to the part of the core C facing the touch roller 3 by the adhesive applying device 1 to the core configured as described above, the glue applicator 5 is shown in FIG. As shown in FIG. 3, the support bar 4 is disposed at the adhesive application position, and the application roller 12 is retracted to the position indicated by the chain line in FIG. 4 and glued in the direction indicated by the arrow A1 in FIG. The device 5 is caused to travel along the support bar 4 by the reciprocating drive mechanism 6. When the application roller 13 reaches the position where the adhesive application to the core C starts, the fluid pressure cylinder device 19 is operated to press the application roller 13 against the core C as shown in FIG. Then, the endless belt 16 or the application roller 13 hung on the application roller 13 and the application roller 13 rotate on the outer peripheral surface of the core C in the direction shown by the arrow A3 by the frictional force between the application roller 13 and the arrow A1. The adhesive G adhering to the outer peripheral surface of the application roller 13 adheres to the outer peripheral surface of the core C and the endless belt 16 circulates. 11 is continuously supplied to the outer peripheral surface of the coating roller 13.
[0022]
Thereafter, when the application roller 13 comes to a position where the adhesive application to the core C is stopped, the fluid pressure cylinder device 19 is operated in the direction in which the piston rod 19a advances to swing the movable arm 18 to apply the application roller. 13 is retracted to the position indicated by the chain line in FIG.
[0023]
In the case of the adhesive application device 1 of this embodiment, since the engagement body 27 is provided, when the adhesive G that is easy to dry is used, it is moved by the fluid pressure cylinder device 19 immediately after the glue applicator 5 starts running. The arm 18 is driven to press the application roller 13 against the engagement body 27. Then, as in the case of pressing against the core C, the application roller 13 moves while rotating on the engaging surface of the engaging body 27, the endless belt 16 circulates, and the paste applicator 5 faces the core C. The new adhesive G in the container 11 is supplied to the outer peripheral surface of the coating roller 13 by the endless belt 16 until reaching the position. In order to eliminate the need for the advancement / retraction mechanism 17 to advance the application roller 13, the engaging body 27 may be disposed so as to engage with the application roller 13 in the retracted position.
[0024]
The apparatus for applying an adhesive to the winding core of the present invention is not limited to a winding apparatus that simultaneously winds a plurality of belt-like sheets around each winding core supported by each pair of winding arms as shown in FIG. The present invention may be applied to a winding device that winds up each of the cores that are passed through one common winding shaft, or a winding device that winds up one belt-like sheet around one winding core. Further, the support bar 4 may be arranged below the position shown in FIG. 3 and the paste applicator 5 may be arranged at the height shown in FIG.
[0025]
【The invention's effect】
According to the present invention, even if the touch roller is disposed beside the core, the adhesive in the container is applied by the coating roller attached to the support member and the endless belt hung on the pair of intermediate rollers and the guide roller. Since the application roller can be replenished, the application roller can reliably apply the adhesive to the portion of the core facing the touch roller. In addition, when the application roller is pressed against the core, there is no need to move the container containing the adhesive in the direction of pressing the core together with the application roller, so that the application roller can be moved forward and backward in a short time. The adhesive can be accurately applied to the core even when the moving speed of the glue applicator increases. Therefore, it is possible to obtain an apparatus for applying an adhesive to a winding core that can accurately and reliably apply an adhesive to a portion of the winding core mounted on the belt-shaped sheet winding device facing the touch roller in a short time. it can.
[0026]
Further, by providing an engagement body disposed along the travel path near the standby position of the glue applicator so that the application roller can be engaged, for example, on the application roller on which the adhesive is waiting during the winding operation. Even if it is relatively easy to dry, the adhesive can be accurately and reliably applied to the core from the beginning.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of an apparatus for applying an adhesive to a winding core according to the present invention.
FIG. 2 is a schematic front view of the adhesive application device shown in FIG.
FIG. 3 is a schematic side view of the adhesive application device shown in FIG. 2;
FIG. 4 is a plan view of a pasting device.
5 is a cross-sectional view of the cross section along the cutting line BB in FIG.
FIG. 6 is a side view of a pasting device and an engagement body.
[Explanation of symbols]
C Winding core S Band-like sheet G Adhesive 1 Adhesive applying device 2 to the winding core Winding device 3 Touch roller 4 Support bar 5 Gluing device 6 Reciprocating drive mechanism 7 Winding arm 8 Winding motor 11 Container 12 Support member 13 Application roller 14 Guide pulley 15 Intermediate pulley 16 Endless belt 17 Advance / retract mechanism 18 Movable arm 19 Fluid pressure cylinder device 20 Base 21 Shaft body 22 Switching valve 23 Pulley 24 Pulley 25 Belt 26 Motor 27 Engagement body

Claims (2)

This is an apparatus for applying an adhesive to a winding core that applies a liquid adhesive for adhering the leading end of the belt-like sheet to a portion of the winding core that is mounted on the winding device of the belt-like sheet that faces the touch roller for a required length. A pasting device movably mounted on a support bar provided in parallel to the winding core, and a reciprocating drive mechanism capable of reciprocating the pasting device along the support bar; An outer peripheral surface of the winding core attached to one end of the supporting member, a supporting member in which one end is directed to the winding core and the other end is inserted into the container from above. The guide roller is immersed in a coating roller that can roll in the longitudinal direction of the core, a guide pulley attached to the other end of the support member, a pair of intermediate pulleys attached near the corner of the support member, and the guide pulley. So that the adhesive placed in the container To be supplied to the outer peripheral surface of use roller, and an endless belt hung on the guide pulley and the intermediate pulley and the coating pulley, for pressing timely the coating roller to the outer peripheral surface of the core, the support member An apparatus for applying an adhesive to a winding core, characterized by comprising an advance / retreat mechanism.   The apparatus for applying an adhesive to a winding core according to claim 1, further comprising an engaging body disposed along a traveling path near a standby position of the glue applicator so that the application roller can be engaged.

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