FIELD: process engineering.
SUBSTANCE: proposed device comprises drive to feed items toward envelope, vacuum drum with surface to engage with and transfer envelope to item, and inclined element. Said element is connected with drum and has flat surface tangential to said drum. Said surfaces serves to support envelope front. In compliance with second version, device comprises vacuum source to continuously generate negative pressure at said surface. Envelope filling device comprises first end engaged with paper reel feed and device to make sheets thereof. Besides, proposed device comprises component to fit separate sheets into envelope. Automatic device comprises aforesaid sheets fitter, vacuum drum, inclined element connected with said drum and provided with flat surface tangential to said drum. Method of inserting comprises feeding the item to inserting section, applying negative pressure to envelope, displacing revolving surface, and supporting envelope front by relatively stationary surface. Envelope processing device comprises frame structure and support plate arranged at said frame. Said support plate has flat surface to support pile of envelopes in vertical direction and pressure-sensitive lever. Said lever is mounted on aforesaid frame and has sensitive surface directed across support plate. Pressure-sensitive lever may turn in response to pressure applied by envelope and is located relative to support plate so as to allow first envelope front to extend beyond said sensitive surface. Envelope processing device comprises device to feed items to envelope from envelope pile, vacuum drum and inclined element connected therewith. Proposed method of processing envelopes comprise feeding item to inserting section, applying negative pressure to envelope, displacing revolving surface, applying first force to envelope pile, engaging first envelope with moving surface, turning said moving surface in response to first force and applying second force to said envelope pile. In compliance with second version, envelope pile is displaced to envelope feed position, detecting pressure at front envelope at feed position, and control over displacement in response to said detection.
EFFECT: higher efficiency and quality.
29 cl, 13 dwg
