Abstract: A mold clamping device includes a first fixed member to which a stationary mold is to be attached; a first movable member to which a movable mold is to be attached; a second movable member configured to move together with the first movable member; a second fixed member provided between the first movable member and the second movable member; a mold clamping force generating mechanism configured to generate a mold clamping force due to an electromagnetic force between the second movable member and the second fixed member; and a mold clamping force amplifying mechanism configured to amplify the mold clamping force generated by the mold clamping force generating mechanism.

Abstract: A mold clamping device includes a first fixed member to which a stationary mold is to be attached; a first movable member to which a movable mold is to be attached; a second movable member configured to move together with the first movable member; a second fixed member provided between the first movable member and the second movable member; a mold clamping force generating mechanism configured to generate a mold clamping force due to an electromagnetic force between the second movable member and the second fixed member; and a mold clamping force amplifying mechanism configured to amplify the mold clamping force generated by the mold clamping force generating mechanism.

Abstract: An electronic circuit unit electrically connected to a motherboard via a terminal soldered on a lower surface of a circuit board is provided, wherein the terminal has a bridge connection portion disposed on an upper surface of the circuit board, a first lead portion extending downwardly from one end of the bridge connection portion so as to be inserted through a first through-hole of the circuit board, and a second lead portion extending downwardly longer than the first lead portion from the other end of the bridge connection portion so as to be inserted through a second through-hole of the circuit board, the terminal having a bent form, and wherein the first lead portion is soldered on the lower surface of the circuit board, and the second lead portion is inserted into a terminal installation hole of the motherboard when the electronic circuit unit is mounted on the motherboard.

Abstract: A division circuit includes: a signal input/output terminal to and from which two signals, that is, a first signal using a first frequency band and a second signal using a second frequency band higher than the first frequency band, are input and output; a first low-pass filter which does not pass the second signal and passes the first signal; a first high-pass filter which is formed such that a plurality of serial resonant circuits set at different resonant frequencies, respectively, is cascaded in parallel and which does not pass the first signal and passes the second signal; and a division point connecting one end of the first low-pass filter to one end of the first high-pass filter between the signal input/output terminal, the first low-pass filter, and the first high-pass filter. In the plurality of series resonant circuits, a first serial resonant circuit is located from the division point.

Abstract: An injection molding machine has a motor (31) provided with a brake unit (34). The brake unit (34) generates a braking torque greater than or equal to a maximum torque that the motor (31) is capable of generating. Thereby, the rotation of an output shaft (32) of the motor (31) is stopped. Therefore, at the time of stopping driving of a drive part and performing a predetermined operation, it is possible to stop a driven part from moving suddenly.

Abstract: An injection apparatus has a cylinder member having a feed opening (215) formed at a predetermined position; an injection member disposed within the cylinder member in a manner capable of advancing and retreating; a molding-material feed apparatus which attached to the feed opening (215) and feeds a molding material into the cylinder member through the feed opening (215); and thermoelectric cooling elements (261) to (264) disposed at predetermined positions around the feed opening (215). Since the thermoelectric cooling elements (261) to (264) are disposed at the predetermined positions around the feed opening (215), temperature around the feed opening (215) can be brought to an appropriate value, and the response of temperature control can be enhanced.

Abstract: An object is to provide a motor-driven injection molding machine in which responsibility of a member-to-be-driven can be enhanced, as well as a molding method using the same. The motor-driven injection molding machine includes a member-to-be-driven; a motor for operating the member-to-be-driven; and a motion direction conversion portion disposed between the motor and the member-to-be-driven and adapted to convert to a linear motion a rotational motion of rotation generated by driving the motor. In the motor, the ratio of the stacking length of a magnet of a rotor (56) to the inside diameter of a stator (57) is 3 or more. In this case, since, in the motor, the ratio of the stacking length of the magnet of the rotor (56) to the inside diameter of the stator (57) is 3 or more, responsibility of the member-to-be-driven can be sufficiently enhanced.

Abstract: An object is to provide a motor-driven injection molding machine in which responsibility of a member-to-be-driven can be enhanced, as well as a molding method using the same. The motor-driven injection molding machine includes a member-to-be-driven; a motor for operating the member-to-be-driven; and a motion direction conversion portion disposed between the motor and the member-to-be-driven and adapted to convert to a linear motion a rotational motion of rotation generated by driving the motor. In the motor, the ratio of the stacking length of a magnet of a rotor (56) to the inside diameter of a stator (57) is 3 or more. In this case, since, in the motor, the ratio of the stacking length of the magnet of the rotor (56) to the inside diameter of the stator (57) is 3 or more, responsibility of the member-to-be-driven can be sufficiently enhanced.

Abstract: The object is to provide a drive apparatus for an injection molding machine which can increase the responsiveness of acceleration at the time of start-up of a driven portion. It has a driven portion, a transmission shaft which has a screw shaft portion and an output shaft portion and which is connected to the driven portion so as to be able to rotate with respect thereto and which can advance and retract, a nut which threadingly engages the screw shaft portion, a motor frame which is mounted on a motor mounting frame, a rotor which is mounted on the output shaft portion, and a stator which is mounted on the motor frame. A rotor is mounted on the output shaft portion of the transmission shaft, so the inner diameter of the stator can be reduced by that amount, and the outer diameter of the rotor can be decreased.

Abstract: A drive apparatus for an injection molding machine comprises a drive means, a rotation transmission shaft, a screw shaft, a nut and a driven member. The rotation transmission shaft is connected to the drive means and rotated by the drive means. The screw shaft is rectilinearly movably disposed, surrounds the rotation transmission shaft, and engages with an outer cylindrical surface of the rotation transmission shaft on an inner cylindrical surface of the screw shaft. The nut is threadably engaged with the screw shaft. The driven member is disposed on the screw shaft. In this apparatus, the rotation generated by the drive means is transmitted to the screw shaft and the screw shaft is advanced and retracted not to rotate the nut. Therefore, the inertia of the drive apparatus becomes small and the response of mold opening/closing becomes rapid when the drive mean is driven.

Abstract: A product ejecting apparatus for an injection molding machine includes: a first drive unit; a first transmission unit connected to the first drive unit, wherein a rotation of the first drive unit results in a rotation of the first transmission unit; a second drive unit; a second transmission unit connected to the second drive unit, wherein a rotation of the second drive unit causes a rotation of the second transmission unit; an ejector pin configured to reciprocate based upon a motion of the first transmission unit; and a working member connected to the second transmission unit, wherein a movement of the second transmission unit results in reciprocating movement of the working member. The first drive unit is operated so as to cause the first transmission member to reciprocate, thereby causing the ejector pin to reciprocate. The second drive unit is operated so as to cause the second transmission member to reciprocate, thereby causing the working member to reciprocate.

Abstract: A radiating structure of an electronic circuit unit comprising a circuit board, on which a plurality of circuit parts including a heater element are mounted, and a radiating plate of an aluminum material supporting the circuit board, the circuit board and the radiating plate being beforehand fixed together by the eyelets or the like, in which state cream solder is applied on predetermined portions of the circuit board to make reflow solder, thereby filling solder into through-holes provided in the circuit board to bring the circuit board into contact with the radiating plate. When the radiating structure thus constructed is adopted, the solder filled into the through-holes heightens degree of adhesion between the circuit board and the radiating plate, so that heat of the heater element can be efficiently radiated outside through the radiating plate from the circuit board.

Abstract: A product ejecting apparatus for an injection molding machine includes: a first drive unit; a first transmission unit connected to the first drive unit, wherein a rotation of the first drive unit results in a rotation of the first transmission unit; a second drive unit; a second transmission unit connected to the second drive unit, wherein a rotation of the second drive unit causes a rotation of the second transmission unit; an ejector pin configured to reciprocate based upon a motion of the first transmission unit; and a working member connected to the second transmission unit, wherein a movement of the second transmission unit results in reciprocating movement of the working member. The first drive unit is operated so as to cause the first transmission member to reciprocate, thereby causing the ejector pin to reciprocate. The second drive unit is operated so as to cause the second transmission member to reciprocate, thereby causing the working member to reciprocate.

Abstract: A drive apparatus for an injection molding machine comprises a drive means, a rotation transmission shaft, a screw shaft, a nut and a driven member. The rotation transmission shaft is connected to the drive means and rotated by the drive means. The screw shaft is rectilinearly movably disposed, surrounds the rotation transmission shaft, and engages with an outer cylindrical surface of the rotation transmission shaft on an inner cylindrical surface of the screw shaft. The nut is threadably engaged with the screw shaft. The driven member is disposed on the screw shaft. In this apparatus, the rotation generated by the drive means is transmitted to the screw shaft and the screw shaft is advanced and retracted not to rotate the nut. Therefore, the inertia of the drive apparatus becomes small and the response of mold opening/closing becomes rapid when the drive mean is driven.