摘要:
A method wherein the component to be soldered is placed onto the printed circuit board, whereupon the stirrup electrodes of the soldering mechanism are lowered and the terminal legs of the component are pressed against the printed circuit board with a force. After heating the stirrup electrodes for melting the solder, a further advance of the stirrup electrodes ensues for impressing the terminal legs into the molten solder. The formation of a solder layer between terminal legs and printed circuit board subsequently ensues by reducing the force exerted onto the stirrup electrodes and/or by defined retraction of the stirrup electrodes.
摘要:
An apparatus for separating piece goods. The apparatus includes a plurality of piece goods that form a stack. The stack is supported by a stack magazine and stop. The apparatus further includes a pulling-off mechanism for separating and removing the piece goods for the stack by pivotably contacting the stack in a pulsating motion.
摘要:
The apparatus comprises a magazine (M) for the acceptance of the stacked unit load and for offering the unit load in an upper fetching position (A) of the stack, a guide profile (FP) of the magazine (M) that is at least approximately L-shaped in crossection and that is arranged inclined such that the unit load lies against both legs of the guide profile, and a rotor (R) that carries at least one suction grab (SG) that is adjustable in radial direction and swivellably arranged, and a conveyor (F) for the acceptance and further-transport of the separated unit load, whereby magazine (M), rotor (R) and conveyor (F) are aligned such relative to one another in terms of their spatial position that the suction grab (SG) can seize the unit load respectively offered in the fetching position (A) of the magazine (M) and transfer it to the conveyor (F) after a rotation of the rotor(R).
摘要:
An apparatus for separating and transferring flat unit loads such as newspapers, periodicals and other publications is disclosed. The apparatus has a means for accepting a stack of unit loads and for offering the unit loads one-by-one at a fetching position. A drum is arranged rotatable about a longitudinal axis and has a perimeter surface adjacent the fetching position. The drum has at least one suction opening formed in the perimeter surface for seizing the next available unit load from the stack at the fetching position and for holding the unit load to the drum perimeter surface as the drum rotates to an ejection position. A conveyor means is disposed adjacent the ejection position for receiving the separated unit load from the drum and for transporting the unit load away. The apparatus is also suitable for separating and transferring unpackaged newspapers, periodicals, other publications and the like.
摘要:
A transfer apparatus for transferring items from a first conveying device to moving assigned item carriers carried on a second conveying device is disclosed. The item carriers and the second conveying device move in a second transporting direction which is opposite to a first transporting direction of the first conveying device. The transfer apparatus includes a transfer member which includes a continuous circulating conveying belt and a continuous circulating pressure-exerting belt. The transfer member receives items from the first conveying device between the two belts and discharges them through a discharge region to the moving item carriers. The discharge region of the transfer member pivots along the second transporting direction of the item carriers. The transfer member is aligned with the second conveying device so that items are discharged through the discharge region to the assigned item carriers without movement of the discharge region in a direction which would be out of alignment with the second transporting direction.
摘要:
In a soldering device comprising at least one stirrup electrode that is secured to a soldering stirrup holder and is heatable with electrical resistance heating and has two soldering webs lying opposite one another or four soldering webs lying opposite one another in pairs, the working surfaces at the underside of the soldering webs should be capable of being placed exactly parallel onto the soldering location that lies, for example, on a printed circuitboard. This is enabled by a flexible suspension of the soldering stirrup holder which provides a pivot compensation center lying centrally in the plane of the working surfaces. As a result thereof, a reliable contact of the parts to be soldered to one another and to the soldering stirrups is guaranteed.
摘要:
A transfer device is provided which includes a rotating paddle wheel (FR) whose preferably fixedly arranged paddles (F) form pockets (Z) which receive the items (S) arriving on a first conveying device (FE1) and discharge the items onto circulating item carriers (ST) of a second conveying device (FE2), the speed (v1) and the spacing (t1) of the incoming items (S), the circumferential speed (u) and the circumferential spacing (t2) of the paddle wheel (FR) and the speed (v3) and the spacing (t3) of the circulating item carriers (ST) being matched to one another. Direct transportation of the items (S) into the pockets (Z) of the paddle wheel (FR) is made possible by segmenting each of the paddles (F) by a plurality of gaps arranged one behind the other in the axial direction, and by interleaving guided segments of the first conveying device (FE1) into the paddle wheel (FR) in the region of the gaps. The transfer of the items (S) to the pockets (Z) can thus be reliably controlled since an ejection operation which is dependent on shape and mass of the items (S) may be eliminated.
摘要:
A soldering device has two or four stirrup electrodes secured to a soldering stirrup holder and a centrally-arranged suction pipette between the stirrup electrodes for picking up, conveying and placing components onto assigned soldering locations. Sensitive mechanical and electrical parts, particularly machanical guides and electrical contacts are protected against undesired precipitation of soldering vapors that arise during the soldering process. This protection is achieved by an extraction device for solder vapors which includes an annular extraction opening between the suction pipette and the soldering stirrup holder. The extraction opening discharges into an extraction chamber arranged above the soldering stirrup holder and is in communication with at least one extraction port.
摘要:
Apparatus for handling cartons of paperboard and the like has at least two diametrically opposite holders, means for moving the holders in a circular path and means for moving same into and out of unfolded cartons to fix and carry the cartons. The diametrically opposed holders are arranged to be controlled for movement in opposite directions by a common control device.