Resources Contact Us Home
Fabrication of box parts from plastic material

Image Number 12 for United States Patent #3977307.

Box parts such as box bottoms and box lids are fabricated from notched blanks of plastic sheet material.Relatively large boxes can be fabricated and the blank feed mechanism is actuated by a crank mechanism that runs at twice the speed of a main, one revolution per cycle drive shaft. An extension blank pusher can be added to produce smaller boxes. The tab folders have solvent applicators formed as grooved metal bars associated with a centralized solvent delivery and recovery system. The transverse folding dies are heated with a flexible, rope-like heating element to facilitate changes in die length. The feeding apparatus includes cam operated, vacuum cup lifter arm assemblies which lift the top blank from a stack and present it to vacuum cups on the feed pushers. These assemblies are longitudinally adjustable. The anvils that cooperate with the tab folders have heated bodies, but their clamp surfaces are insulated from the bodies.

  Recently Added Patents
Interest point detection
Three-dimensional holographic display using active shutter
Reception circuit and signal reception method
Pharmaceutical combination of pazopanib and topotecan to treat neuroblastoma, osteosarcoma, and rhabdomyosarcoma in a human
Imaging apparatus, control method thereof, and program
Double diffused metal oxide semiconductor device and manufacturing method thereof
Use of endogenous promoters in genetic engineering of Nannochloropsis gaditana
  Randomly Featured Patents
Multiple bale pick-up sweep
Nuclear magnetic resonance methods and apparatus
Display apparatus
Adjustable setting block assembly
Optical reader having apparatus for discrimination between dither-matrix and non-dither-matrix reading areas, and/or means for determining light emitter drive power values by using reference r
Method and apparatus for heat treatment in a fluidized bed
Putter golf club head
Solid state monolithic switching device
Amplification of HIV-1 sequences for detection of sequences associated with drug-resistance mutations
Pressure relief means for industrial vacuum