Abstract: The present invention relates to a highly contracted artificial fibroin fiber including a modified fibroin, in which a contraction percentage defined by the following equation exceeds 7%.

Abstract: A power transmission device includes: a first pulley; a second pulley having a diameter equal to or larger than a diameter of the first pulley; a belt wound around the first pulley and the second pulley; and a detection unit configured to detect a displacement of the belt in a direction intersecting the surface of the belt. The detection unit is configured to detect the displacement of the belt at a predetermined measuring point. The distance from the border between a portion where the belt and the first pulley are in contact with each other and a portion where the belt and the first pulley are not in contact with each other, to the measuring point is equal to or smaller than the diameter of the first pulley.

Abstract: An injection molding machine includes a belt transmission mechanism (mold opening/closing mechanism, ejector mechanism, screw drive mechanism, injection mechanism) configured to transmit drive force from a driving shaft (driving pulley) to a driven shaft (driven pulley) by means of a belt. The injection molding machine includes: a cover covering part or entirety of the belt; and a sensor attached to the cover and configured to detect an abnormality of the belt.

Abstract: In an injection molding machine including a base, a pivot pin provided on the base, and an injection unit supported by the pivot pin so as to be pivotable relative to the base in a pivoting direction, the injection molding machine is equipped with a rod-shaped member configured to cause the injection unit to pivot in the pivoting direction by pushing the injection unit, and a first support member provided on the base and configured to be screw-engaged with the rod-shaped member.

Abstract: Provided are a support structure whereby the load on a motor drive shaft or bearing can be reduced, and an industrial machine. The support structure according to an embodiment of the present invention comprises a bearing (112) positioned between a motor (102) and a drive pulley (104), and a bearing holder (114) provided to the motor (102). An inner race (120) of the bearing (112) is fixed to the drive pulley (104) so as to be incapable of sliding in the axial direction of a drive shaft (102S), and an outer race (122) of the bearing (112) is allowed to move in the axial direction between the bearing holder (114) and the drive pulley (104).

Abstract: An injection molding machine includes a connection member that connects a nozzle touch mechanism and a fixed platen. The connection member has: an arm part that rises upward from a support frame part on a side of the fixed platen; and a platen connection part that is provided on an upper section of the arm part and serves as a second connection section connected to the fixed platen. The platen connection part has: a connection pin that is fixed to the arm part and extends in a left-right direction coinciding with the width direction of a machine frame; and a rotary member that is fixed to the fixed platen and can rotate around the connection pin, wherein the connection pin is disposed so as to pass through the center axis of a nozzle and include a plane parallel to a mount surface of the machine frame.

Abstract: Provided is an injection molding machine that can reduce variations in the position of a slider with respect to a prescribed position. An injection molding machine of one embodiment comprise: a second injection device as an injection device for injecting a resin to a mold from a direction intersecting an extension direction in which a tie bar extends; a slider that supports the second injection device and slides same along the extension direction with respect to a fixed platen; and an adjuster that is disposed on a side of the fixed platen opposite to side where the mold is disposed, that regulates the slider so that the slider does not slide, with respect to the fixed platen, beyond the prescribed position in a mold opening direction of the mold, and that is capable of adjusting the prescribed position in the extension direction.

Abstract: A support frame of a machine base includes a first element to be joined to the upper or lower end face of a vertical support column of the machine base and extending in the horizontal direction, and a second element spaced from the first element on the opposite side from the support column and extended in the horizontal direction. The end face of the support column joined to the first element is formed with one or more first protrusions which extend to reach the second element and join to it.

Abstract: A drive mechanism for an injection molding machine that causes a movable object to undergo movement includes a driving motor that generates a driving force, a drive pulley connected to the driving motor, a driven pulley connected to the movable object, and a plurality of belts (a wide belt and a narrow belt) of equal length, the belts being arranged in parallel with each other and trained around the drive pulley and the driven pulley.

Abstract: A linear motion mechanism for moving an injection unit in the front-rear direction relative to a machine base supporting the injection unit includes: a pair of first linear guides configured to linearly move the injection unit relative to the machine base; and one or more pairs of second linear guides arranged on the rear side relative to the pair of first linear guides, and configured to linearly move the injection unit relative to the machine base.

Abstract: In an injection molding machine including a base, a pivot pin provided on the base, and an injection unit supported by the pivot pin so as to be pivotable relative to the base in a pivoting direction, the injection molding machine is equipped with a rod-shaped member configured to cause the injection unit to pivot in the pivoting direction by pushing the injection unit, and a first support member provided on the base and configured to be screw-engaged with the rod-shaped member.

Abstract: An injection molding machine includes a belt transmission mechanism (mold opening/closing mechanism, ejector mechanism, screw drive mechanism, injection mechanism) configured to transmit drive force from a driving shaft (driving pulley) to a driven shaft (driven pulley) by means of a belt. The injection molding machine includes: a cover covering part or entirety of the belt; and a sensor attached to the cover and configured to detect an abnormality of the belt.

Abstract: A drive mechanism for an injection molding machine that causes a movable object to undergo movement includes a driving motor that generates a driving force, a drive pulley connected to the driving motor, a driven pulley connected to the movable object, and a plurality of belts (a wide belt and a narrow belt) of equal length, the belts being arranged in parallel with each other and trained around the drive pulley and the driven pulley.

Abstract: A power transmission device includes: a first pulley; a second pulley having a diameter equal to or larger than a diameter of the first pulley; a belt wound around the first pulley and the second pulley; and a detection unit configured to detect a displacement of the belt in a direction intersecting the surface of the belt. The detection unit is configured to detect the displacement of the belt at a predetermined measuring point. The distance from the border between a portion where the belt and the first pulley are in contact with each other and a portion where the belt and the first pulley are not in contact with each other, to the measuring point is equal to or smaller than the diameter of the first pulley.

Abstract: A machine base for an injection molding machine is equipped with an upper frame supporting at least a mold clamping device of the injection molding machine from below, two lower frames supporting the upper frame from below in a state of being in contact with a bottom surface of the upper frame, and a plurality of height adjusting mounts respectively attached to bottom surfaces of the two lower frames and configured to adjust the height of the injection molding machine.

Abstract: A machine base supports at least one of a clamping unit and an injection unit of an injection molding machine from below. The machine base includes an upper frame extended horizontally and configured to support at least one of the clamping unit and the injection unit. The upper frame has a hollow member and a plate member having a concave cross-section, attached to an upper surface of the hollow member. The plate member and the hollow member are formed with a through hole penetrating from an upper surface of the plate member to a hollow portion in the hollow member.

Abstract: A support frame of a machine base includes a first element to be joined to the upper or lower end face of a vertical support column of the machine base and extending in the horizontal direction, and a second element spaced from the first element on the opposite side from the support column and extended in the horizontal direction. The end face of the support column joined to the first element is formed with one or more first protrusions which extend to reach the second element and join to it.

Abstract: A linear motion mechanism for moving an injection unit in the front-rear direction relative to a machine base supporting the injection unit includes: a pair of first linear guides configured to linearly move the injection unit relative to the machine base; and one or more pairs of second linear guides arranged on the rear side relative to the pair of first linear guides, and configured to linearly move the injection unit relative to the machine base.

Abstract: An injection molding machine includes, on a machine base, a mold having a stationary platen, an injection unit having a nozzle for injecting a molten material into the mold, a nozzle touch mechanism for pressing the nozzle against the mold, and a connecting member for connecting the nozzle touch mechanism and the stationary platen. The connecting member has a support base and an arm part, and also has a first connecting part to be connected to the nozzle touch mechanism on the support base, and a second connecting part to be connected to the stationary platen on an upper part of the arm part. The injection molding machine is configured so that a nozzle touch force is transmitted to the nozzle touch mechanism via the stationary platen and the connecting member. The second connecting part of the connecting member is disposed to be rotatable in a direction along a moving direction of the injection unit.

Abstract: An injection molding machine includes a sub injection device configured to inject molten resin into a mold of a clamping device along a direction perpendicular to an opening/closing direction of the mold, a sub machine base configured to support the sub injection device, and a coupling unit provided on a main machine base configured to support a main injection device and the clamping device and couple the main machine base and the sub machine base together. The coupling unit includes a base provided on the main machine base, two fixed blocks fixed to the base, a guide bar bridged in parallel to the opening/closing direction of the mold by the two fixed blocks, and a movable block slidably fitted onto the guide bar. The movable block is connected to the sub machine base.