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Carton flap folding and sealing machine

  • US 5,772,568 A
  • Filed: 06/17/1997
  • Issued: 06/30/1998
  • Est. Priority Date: 06/17/1997
  • Status: Expired due to Fees
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Product Citations
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Petitions
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Forward Citations
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Assignment
First Claim
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1. A carton flap folding and sealing machine comprising a separator, a conveyor, a first folding device, a second folding device, a third folding device, and a sealing device combined together;

  • said separator having a position stand, a lift table, a roller unit, two clamp strips, a transmitting device and a linear scale combined together;

    said position stand having casters at bottom ends, a first air cylinder fixed at a proper location for controlling said lift table in its movement, a sensor fixed on an upper side edge, several roller units fixed between two opposite walls of said lift table, a reduction motor fixed at a proper location to move said roller units, said two clamp strips fixed on said lift table and moved inward and outward by said transmitting device;

    said transmitting device having two slide bars between two opposite walls below said roller units, a slide block respectively fixed on two ends of each said slide bar, a first and a second fix plate respectively connected on said two slide blocks, an upright support rod respectively fixed with said first and said second fix plate and between two roller units and having an upper end fixed firmly with each said clamp strip, a second air cylinder fixed on a side wall of said lift table and having its piston rod end respectively fixed with said first and said second fix plate, a first chain having its one end fixed on an outer side of said first fix plate and extending around a first guide wheel and having it through to an other side of the first fix plate and then having its other end fixed on an inner side of said second fix plate, a second chain having its one end fixed on an inner side of said first fix plate, a cover closing on an outer side of said transmitting device, said first and said second fix plate moving nearer to or farther from each other by means of said two chains controlled by operation of said second air cylinder, and said linear scale fixed on a side wall of said lift table and beside said transmitting device and between said two fix plates for measuring width of a carton;

    said conveyor having castors at bottom ends, a plurality of rollers, two opposite clamp strips located on said rollers in relative locations to said folding devices, two front opposite posts and two rear opposite posts disposed to stand at two opposite sides of said conveyor, said first folding device located between said front posts, said second folding device located between said rear posts, a first sensor, a second sensor, a third sensor, a fourth sensor, a fifth sensor and a sixth sensor each fixed on a side edge of said conveyor and respectively facing said first folding device, said second folding device and said third folding device;

    said first folding device having a hollow case fixed under a horizontal beam fixed between upper ends of said two front posts, said hollow case having a sloped guide surface on a front side and a sloped position surface of a large curve extending further down from said guide surface, said hollow case having a hollow interior, a third air cylinder fixed in said hollow interior at a lower portion, said third air cylinder having its piston rod end connected with a revolving head, said revolving head connected with a swing plate for swinging a front flap of a carton;

    said second folding device having a swing position means and a swing pressing means, said swing position means having a slanting support rod fixed on said upper beam of said front posts and extending slantingly down, a sloped plate fixed with a lower end of said slanting support rod, a fourth air cylinder pivotally disposed on said sloped plate and having its piston rod end connected with a first swing arm to let said first swing arm to swing in a curved route, said swing pressing means having a crank-shaped arm pivotally fixed on an upper end of said hollow interior of said hollow case, a fifth air cylinder pivotally fixed in said hollow case and having its piston rod end pivotally connected with said crank-shaped arm to adjust a swing angle of said crank-shaped arm, a second swing arm having its inner end pivotally connected with an outer end of said crank-shaped arm and swung to change its angle by a sixth air cylinder pivotally connected on said crank-shaped arm having its piston rod end pivotally connected with an intermediate portion of said second swing arm;

    said third folding device having two opposite clamp guide rods adjustable in moving nearer to or farther from each other to swing upward two side flaps of a carton and folding inward by its sloped pressing portion as the carton moves forward, said two clamp guide rods respectively having its inner end fixed with a sleeve fitted around a rod, a screw respectively screwing tightly each said sleeve for handling said same rods to move nearer to or farther from each other;

    said sealing device having two pairs of an upper base and a lower base facing each other, said upper base and said lower base respectively having a tape support frame for hanging a glue tape thereon, and a roller unit for spreading said tape in a flat condition, and a adjusting unit respectively fixed on said upper base and said lower base so as to adjust the position of said two bases, one of said two tapes immediately taking place of the other tape in case the latter is used up without in interruption of sealing operation.

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