Abstract: A single layer color film packaging machine includes a supplying system having pair of upright supporters, a cross bar mounted between the two upright supporters, a plurality of rods extending downwardly from the cross bar, two guide rods mounted between the two upright supporters, a film feeding device having a primary frame on which is installed a sealing cutter, an arm extending from the primary frame for mounting a roll of film which has an end extending through between two rollers, a sealing cutter mounted inside the primary frame and a cutter driven by a pneumatic cylinder, a rear end of a chain of the continuous feeding device extending to a rear side of the cutter, a fixing board fixedly mounted by leading rods, and two guiding racks being mounted at two sides of the conveyor belt for transmitting articles, a shrinking device including a furnace the interior of which is partitioned into an upper chamber and a hot shrinking chamber, and a motor being mounted on a top of the furnace for driving an impel

Abstract: A film feeding device for a single layer color film packaging machine includes a primary frame on which is installed a sealing cutter, an arm extending from the primary frame for mounting a roll of film which has an end extending through between two first rollers, one of the rollers being driven by an electric motor, a secondary frame mounted on one side of the primary frame, a micro-switch installed on the secondary frame, a movable rod movably mounted on the secondary frame so that when a packaging film is pulled upwardly by articles, the movable rod will be moved upwardly to leave the micro-switch thereby turning on a first electric motor to drive the first rollers to feed a predetermined length of the packaging film for packaging the articles, another end of the packaging film under the primary frame being moved by second rollers driven by a second electric motor, the articles being fed by a conveyor belt onto a platform and then wrapped by the packaging film.

Abstract: A continuous feeding device for a single color film packaging machine includes a pair of chains mounted at two sides above a conveyor belt, the chains being engaged with a plurality of gears, a plurality of a linking rods equidistantly mounted between the two chains, two first sensors disposed close to an outer side of one of the chains for detecting the lining rods, a platform installed at an end of the conveyor belt, an electric motor mounted beside the conveyor belt and being drivingly connected with an axle on which are fixedly mounted two of the gears engaged with the chains, and two second sensors each mounted close to an outer side of a respective one of the chains, the two second sensors being aligned with each other, whereby the articles can be continuously packaged thus increasing the efficiency.

Abstract: The present invention relates to a packing, sealing and cutting machine for plastic film comprising a film-delivery device mounted with a film tension adjusting button and a rolling needle delivery shaft such that the film is provided with a plurality of holes during the delivering of the film. A separation rod and an electrostatic elimination rod are provided along the path of the delivering of the film so that the delivery of the film is smooth. The front delivery seat is positioned by a teethed rack to adjust the movement of the packed object. The sealing and cutting knife driving device drive the vertical and horizontal knife to seal and to cut the film after an object is packed.

Abstract: A sensing circuit for detecting data stored in a memory cell of an EEPROM by current detecting method is disclosed. The sensing circuit includes a constant current source supplying circuit for supplying a constant current. A loading circuit generates a current the same as the constant current generated by the current source supplying circuit when the memory cell sends out a logic low state signal, so that the data accessing speed during reading the data stored in the memory cell is increased.

Abstract: A packing machine is equipped with an improved hole punching device and an adjustable sealing mechanism. The hole punching device is equipped with a roller shaft having a number of spaced grooves for respectively housing a number of corresponding seats on which punching needles are secured so as to make a roll of film continually delivered for packing purpose to be punched with air passage holes; and an adjustable L-shaped locking device is fixed to the underside of a delivery set so as to make the delivery set easily adjusted and positioned in practical operation in proper alignment with the sealing mechanism. A piston connected sealing mechanism making the same opened and closed repeatedly can be adjusted of the opening extent by way of a wheel controlled screw rod with which the piston is engaged so as to permit articles of different sizes to be accommodated with readiness.

Abstract: A device for raising voltage comprises a first element for providing a first output pin with a voltage raise in response to a first voltage change at a first input pin, and for providing a second output pin with a voltage raise in response to a second voltage change at a second input pin; and a second element for driving, when the voltage at the first output pin becomes higher than the voltage at the second output pin due to the first voltage change at the first input pin, the second output pin to maintain a voltage keeping pace with the voltage at the first output pin, and for driving, when the voltage at the second output pin becomes higher than the voltage at the first output pin due to the second voltage change at the second input pin, the first output pin to maintain a voltage keeping pace with the voltage at the second output pin.

Abstract: An apparatus for page mode programming of an EEPROM cell array applications is described. The apparatus comprises a control gate potential control means and a bit line potential control means. The control gate potential control means is connected to the control gate of the EEPROM cell to select the potential for the control gate of the EEPROM cell, while the bit line potential control means is connected to the bit line of the EEPROM cell to select the potential for the bit line. A bit line of the EEPROM cell is first selected by a bit line control signal, then a control gate control signal determines whether provides the high voltage to the control gate of the EEPROM cell.

Abstract: An automatic packing and sealing machine comprising a front conveyor set, a fast locating device for quickly adjusting and locating the front conveyor set and a sensing device for sensing an article passing therethrough. The sensing device employs a close contact block and a shade board connected therewith. The close contact block is upward swung by the passing article to make the shade board shade a close contact switch so as to actuate a sealing blade for sealing operation. An auxiliary film-pulling device is used to pull the plastic film so as to avoid that an excessively high article cannot be actually clamped by a clamping device and the plastic film packing the article loosen therefrom or the sealing portion is crimped. An elevator device is used to adjust the level of the sealing blade seat to suit various heights of the packed articles. The sealing blade has an arch joint portion which will not thrust the plastic film during the sealing operation.

Abstract: An antomatic packing and sealing apparatus, wherein a plastic film drum with plastic film is placed on a first roller shaft and a second roller shaft and between two adjusting sleeve members freely slidably fitted on the second roller shaft, whereby the placement of the plastic film is easy and the position thereof is adjustable. A substantially U-shaped stretching lever is disposed for forcing open the plastic film against the attaching force so as to facilitate the transferring and packing of the plastic film. A blowing tube is diagonally fixed on a frame body under a front conveying belt assembly, whereby an operator is able to blow diagonally inwardly into the plastic film to expand the same permit an article on the front conveying belt assembly to be packed closer to a film-sealing position so as to save material and make the package more impacted.