摘要:
An apparatus for automatically mounting an electronic device having a plurality of leads on a printed circuit board, by inserting the leads into mount holes of the printed circuit board. A plurality of extension pins are connected straight to the leads to hold the leads of the electronic device. The extension pins are inserted into the mount holes, while the connection between the extension pins and the leads is maintained. The extension pins are then removed from an opposite side of the printed circuit board, thus guiding and inserting the tips of the leads into the mount holes.
摘要:
Apparatus for automatically inserting parallel leads of electronic components into openings in a printed circuit board having an improved lead holding and guiding assembly. The improved lead holding and guiding assembly is associated with the frame of the apparatus and includes a guiding member mounted for rotation about an axis of rotation which extends in the x-direction, i.e., in the direction of a line which is orthogonal to both of the parallel leads, and for longitudinal movement in the z-direction, i.e., in the direction which is perpendicular to the orthogonal plane which contains the orthogonally extending line. The holding and guiding assembly further includes a pair of holding members disposed at respective sides of the guiding members such that the side surfaces of the end portion of the guiding member and the respective inner side surfaces of the holding members constitute lead holding and guiding portions. The holding members are mounted for rotation relative to the guiding member about respective axes of rotation so that the lead holding and guiding portions can be opened and closed as the holding members are rotated.
摘要:
An apparatus for trimming and securing parallel lead electronic components inserted in a printed circuit substrate is provided. The apparatus includes a selectively rotatable driving assembly selectively displaceable towards an electronic component inserted into a printed circuit substrate, a lead bending assembly mounted on the driving assembly for bending the leads, and a cutting assembly mounted on the bending assembly for cutting the leads, the bending and cutting assemblies actuated by displacement of the driving assembly. The apparatus may include a sub-assembly for disposal of chips removed from the leads during cutting and a detection sub-assembly for detecting the presence of an inserted electronic component.
摘要:
An insert sub-assembly of an insert device of a machine for processing and inserting parallel lead electronic components from an electronic component web carrier into lead receiving openings in a printed circuit board includes a first slider device slidably mounted on a frame. A driver mounted on the frame drives the first slider device. A second slider device slidably mounted on the frame cooperates with movement of the first slider device and includes a lead holding and guiding device for holding and guiding an electronic component and a push bar for displacing the component from a predetermined position to an inserted position under the control of the lead holding and guiding device. A feed device mounted on the frame is driven by an intermittent drive to feed the electronic component web carrier intermittently, pitch by pitch. A cutter separates one electronic component from the electronic component web carrier fed by the feed device. A transfer device includes a reciprocating unit for producing reciprocative movements between the cutter and the lead holding and guiding device and an electronic component holding device for holding a lead of the electronic component to be separated by the cutter and transferring the component to the lead holding and guiding device after such component has been separated by the cutter.
摘要:
An electronic component selection and supply apparatus for use in an automatic electronic component inserting machine for automatically inserting electronic components of irregular shapes which are unsuitable for taping, such as electrolytic capacitors, power transistors and variable resistors, into a printed circuit board includes selection and supply apparatus for selecting an electronic component at a first position and supplying the selected component to a second position, the apparatus including electronic component sequence apparatus for selecting a predetermined electronic component which includes a device for vertically holding a plurality of electronic component magazines accommodating the electronic components at predetermined positions in a stacked state, and chuck apparatus for receiving the predetermined electronic component selected by the electronic component sequence apparatus and for supplying the electronic component to the second position.
摘要:
Apparatus for supplying and transferring electronic components includes a plurality of pallets each for receiving and holding one electronic component. An endless conveying mechanism conveys the pallets in and intermittent fashion on a substantially horizontal plane. A supply unit mechanism selectively supplies electronic components to the pallets.
摘要:
Herein disclosed is an electric discharge machine, by which, after the machining operation of a workpiece by an electrode has reached a predetermined position, the machining operation is further accomplished while rocking the electrode in a plane generally normal to the feeding direction of the workpiece for the machining operation. The workpiece has its respective portion uniformly machined by effecting the machining operation accompanied by the rocking motions for a preset period, e.g., either for a predetermined time period or a predetermined number of the rocking motions so that the precision of the finishing operation can be improved.
摘要:
An electrical discharge machine control device which controls the displacement of the relative positions of a machining electrode and a workpiece so that the relative positions of the electrode and workpiece are changed not only in the main direction in which the workpiece is machined with the electrode but also in a plane perpendicular to the Z-axis without rotating the electrode while a predetermined machining discharge gap is maintained between the electrode and the workpiece. The relative displacement in the perpendicular plane is displayed at an enlarged scale on an X-Y display device which may be a cathode-ray tube with the center of the displacement maintained at a predetermined origin point. An optical encoder detects the movement in the X-Y plane to provide a detection signal. The detection signal is applied through reversible counters to the horizontal and vertical deflection amplifiers of the display device.
摘要:
A fixing device is provided with first and second fixing members each having an elastic member, a heater for heating at least one of the first and second fixing members and a controller. The first and second fixing members are abutted against each other so that the elastic members contact with each other. A sheet carrying an image of a developer is passed between the first and second fixing members, whereby the developer is fixed onto the sheet. The controller corrects fixing conditions including a fixing speed and a fixing temperature in accordance with an integrated energizing time that is an integrated value of an energizing time of the heater.
摘要:
An induction heating fixing device is disclosed which is provided with a conducting sleeve, a coil for causing the sleeve to generate an induced current, and a high-frequency power source for feeding a high-frequency wave to the coil. This fixing device detects the switching cycle of the high-frequency power source and the electric power injected into the sleeve and, based on the detected switching cycle and the detected electric power, controls the amount of electric current to be fed from the high-frequency power source to the coil.