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:
A device for cutting lead wires of an electronic circuit element mounted on a printed circuit board into a desired length and for bending the lead wires to be close to the bottom surface of the printed circuit board is capable of dealing with an electronic circuit element having three lead wires as well as that having two lead wires. The device comprises a fixed block having a stationary blade which has two side holes and a central hole formed therethrough, a pair of side levers having laterally movable blade members which are slidable on the surface of the stationary blade to cut and bend lead wires inserted through the side holes of the stationary blade, and a central lever having a movable blade member which are slidable on the surface of the statonary blade to cut and bend a lead wire inserted through the central hole of the stationary blade.
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.
摘要:
In a fixing apparatus having a flexible metal fixing sleeve provided around a holder, which holds a coil inside, and heated by induction current of the coil, and a pressure roller that pinches the fixing sleeve between it and the holder by pressing on the holder, the following relation is satisfied:(F1+F2)/F3.gtoreq.1.7where symbols F1, F2 and F3 represent respectively during recording paper feeding: a drive force transmitted from the pressure roller to the fixing sleeve via recording paper in the region where the recording paper passes through; a drive force transmitted from the pressure roller directly to the fixing sleeve in the region where the recording paper does not pass through; and a friction resistance force generated between the inner surface of the fixing sleeve and the outer surface of the holder.
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 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:
The heat fixing device includes a heating roller and a pressure roller disposed in contact with the heating roller, the heating roller includes a base member and a surface layer, and the surface layer has a surface resistivity of 1×1016 &OHgr; or lower, and a residual elongation percentage of 3% or lower. By this arrangement, charging of the heating roller can be prevented so that the recording medium can be prevented from being curled around the heating roller.