Plural bonding units with shifted timing
An adhesive application device that applies an adhesive onto each of sequentially conveyed paper sheets, includes: a device frame; a bonding member that delivers the adhesive for bonding the paper sheets to each other; a plurality of bonding units that is arranged in a sheet width direction and each has the bonding member; a support member that supports the bonding units on the device frame so as to be movable between a bonding position at which each bonding unit presses its bonding member to apply the adhesive onto the paper sheet and a separated position separated from the bonding position; and a moving member that moves the plurality of bonding units to the bonding position with timing shifted. Thus, it is possible to move the bonding units with a smaller drive force than in a case where the bonding units are moved simultaneously.
1. An adhesive application device that applies an adhesive onto each of sequentially conveyed paper sheets, comprising:
a device frame;
a bonding member that delivers the adhesive for bonding the paper sheets to each other;
a plurality of bonding units that are arranged in a sheet width direction and each have the bonding member;
a support member that supports the bonding units on the device frame so as to be movable between a bonding position at which each bonding unit presses its bonding member to apply the adhesive onto the paper sheet and a separated position separated from the bonding position; and
a moving member that moves the plurality of bonding units to the bonding position with timing shifted.
2. The adhesive application device according to claim 1 , wherein
the plurality of bonding units each have a plurality of bonding members arranged in parallel in the sheet width direction.
3. The adhesive application device according to claim 2 , wherein
the bonding member includes a transfer tape having the adhesive on a tape base material,
the application of the adhesive onto the paper sheet is achieved by movement of the transfer tape to the bonding position, and
a new adhesive surface of the transfer tape is delivered in conjunction with the movement of the transfer tape to the bonding position.
4. The adhesive application device according to claim 1 , wherein
the moving member realizes the movement between the bonding and separated positions by a cam member reciprocated on a back side of the bonding units, and
the timing of the movement of the bonding units to the bonding position is shifted by a shape of the cam member.
5. The adhesive application device according to claim 1 , wherein
the moving member includes a cam member reciprocated in a direction crossing a moving direction of the bonding units to move the bonding units while shifting the timing of movement therebetween and a cam follower provided in each bonding unit so as to be engaged with the cam member, and
the cam member is reciprocated to sequentially move the bonding units between the bonding and separated positions.
6. The adhesive application device according to claim 5 , wherein
the cam member has such a shape as to allow the cam member to continue pressing the bonding units at the bonding position even after movement.
7. The adhesive application device according to claim 1 , wherein
the moving member includes a cam member connected to a drive member reciprocated in a direction crossing a moving direction of the bonding units and a cam engaging member one side of which is engaged with the cam member and the other side of which is connected to the bonding unit so as to transmit the reciprocating motion of the cam member to the bonding unit as a moving motion thereof, and
an elastic member for increasing a pressing force against the paper sheet at the bonding position is interposed between the cam engaging member and bonding unit.
8. The adhesive application device according to claim 7 , wherein
the bonding unit has a plurality of rod members extending in the moving direction of the bonding unit,
some of the rod members slidably support the support member, and the remaining rod members slidably support the cam engaging member, and
a compression spring is interposed between the cam engaging member and bonding unit as an elastic member.
9. The adhesive application device according to claim 8 , wherein
the cam member has a plurality of cam grooves in a reciprocating direction thereof, into which the cam engaging member is fitted, and
the cam grooves are different in phase from each other so as to shift the pressing timing of the bonding member between the bonding units.
10. The adhesive application device according to claim 1 , wherein
the moving member includes a cam member reciprocated in a direction crossing a moving direction of the bonding units and having a cam groove and a cam follower member, one end of which is connected to the cam groove and the other end of which is connected to each bonding unit, configured to convert the reciprocating motion of the cam member into a moving motion of the bonding unit, wherein
a plurality of rod members for supporting the bonding unit are provided so as to guide the bonding unit slid in conjunction with the movement of the cam member; and
a compression spring is wound around each of the rod members between the bonding unit and cam follower so as to allow the bonding unit to press the paper sheet.
11. A sheet processing device comprising:
a carry-in path along which a paper sheet is carried in;
a stacker section that stores the paper sheet conveyed along the carry-in path;
an adhesive application device that is disposed in the stacker section and applies an adhesive onto paper sheets to be sequentially stored in the stacker section to generate a paper sheet bundle; and
a folding section that folds the paper sheet bundle, wherein
the adhesive application device has a configuration as claimed in claim 1 .
12. An image forming device comprising:
image forming means for forming an image onto sequentially conveyed paper sheets; and
a sheet processing device that applies predetermined processing to the paper sheets conveyed from the image forming means, wherein
the sheet processing device has a configuration as claimed in claim 11 .
13. An adhesive application device that applies an adhesive onto each of sequentially conveyed paper sheets, comprising:
a device frame;
a bonding member that delivers the adhesive for bonding the paper sheets to each other;
a plurality of bonding units that are arranged in a sheet width direction and each have the bonding member;
a support member that supports the bonding units on the device frame so as to be movable between a bonding position at which each bonding unit presses its bonding member to apply the adhesive onto the paper sheet and a separated position separated from the bonding position;
a moving member that moves the plurality of bonding units to the bonding position with timing shifted; and
a sheet regulating member that is provided adjacent to the bonding unit and configured to regulate a position of the paper sheet on a platen in conjunction with movement of the bonding unit on a side that reaches first the bonding position.
14. The adhesive application device according to claim 13 , wherein
the regulating member is supported by the device frame so as to be movable between a pressing position at which it presses the paper sheet and a retreat position separated from the paper sheet, the regulating member being configured to be released from engagement with the bonding unit in the course of movement of the bonding unit toward the bonding position to allow regulation of the paper sheet while pressing the same.
15. The adhesive application device according to claim 13 , wherein
the bonding member includes a transfer tape having the adhesive on a tape base material,
the application of the adhesive onto the paper sheet is achieved by movement of the transfer tape to the bonding position, and
a new adhesive surface of the transfer tape is delivered in conjunction with the movement of the transfer tape to the bonding position.
16. The adhesive application device according to claim 13 , wherein
the regulating member is movably provided so as to press the paper sheet at a portion between the bonding members.
17. The adhesive application device according to claim 13 , wherein
the regulating member is movably provided so as to press a sheet side edge portion at both sides of the bonding members.
18. The adhesive application device according to claim 13 , wherein
the regulating member is movably provided so as to press the paper sheet at a portion between the bonding members and at both sides of the bonding members.
19. An adhesive application device that applies an adhesive onto each of paper sheets sequentially conveyed on a platen, comprising:
a device frame;
a bonding member that applies the adhesive on the paper sheet;
a plurality of bonding units that each support a plurality of the bonding members as a group in a sheet width direction;
a support member that supports, on the device frame, the bonding unit allowing the bonding member to apply the adhesive onto the paper sheet and to be moved between a bonding position at which it presses the paper sheet and a separated position separated from the paper sheet and allowing passage of the paper sheet;
a cam member that is connected to a drive member reciprocated in a direction crossing a moving direction of the bonding unit and having a cam groove;
a cam follower member, one end of which is connected to the cam groove and the other end of which is connected to each bonding unit, that is configured to convert the reciprocating motion of the cam member into a moving motion of the bonding unit;
a plurality of rod members that each support the bonding unit so as to allow the bonding unit to be slidably moved by the cam member; and
a sheet pressing member that is provided adjacent to the bonding unit and configured to be movable between a pressing position at which it presses the paper sheet on the platen for regulation and a retreat position retreated upward from the pressing position and to be biased to the pressing position by an elastic member,
the sheet pressing member that is interlocked with the movement of the bonding unit so as to move the sheet pressing member to the pressing position before the movement of the bonding member to the bonding position.
20. The adhesive application device according to claim 19 , wherein
the sheet pressing member is supported by the device frame so as to be movable between a pressing position at which it presses the paper sheet and a retreat position separated from the paper sheet, the regulating member being configured to be released from engagement with the bonding unit in the course of movement of the bonding unit toward the bonding position to allow regulation of the paper sheet while being biased by the elastic member.