Adhesive application device, sheet processing device provided with adhesive application device, and image forming device provided with adhesive application device and sheet processing device

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.

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.