Abstract: A drive mechanism is interposed between two members to make the members move relatively with respect to each other. At least one of the two members is guided to move linearly. The drive mechanism comprises: cam followers that are rotatably supported on one of the two members, that are arranged in the linear moving direction, and that are spaced from each other; and a cam that is rotatably supported on the other one of the two members and that is provided in its circumference with a cam groove in which the cam followers engage, the rotation axis of the cam being arranged in the direction of the linear moving direction. The two members are made to move relatively with respect to each other by driving the cam to rotate and making the cam followers engage successively in the cam groove and move in the direction of the rotation axis.

Abstract: A method and an apparatus for manufacturing tablets of moist powder which is produced by adding an additive agent such as an excipient or a binder to medical ingredients, further adding a solvent such as water, ethanol or the like, and kneading the mixture.

Abstract: A material feeding apparatus has gripper apparatuses which perform clamping and unclamping operations of a material by means of a stationary gripper and a movable gripper, and a sliding block which can support the first gripper apparatus and oscillate in a transfer direction of the material. These members are respectively driven by first, second and third cams which are fixed to an input shaft. In order to closely attach transfer members interposed between the first cam performing a forwarding operation of the material and the sliding block to each other, a spring which always urges the sliding block in a returning direction is provided. Accordingly, it is possible to remove a play between the transfer members and perform a feeding operation at a high speed and a high accuracy. Therefore, it is possible to obtain a material feeding apparatus which can transfer and supply the material at a high speed and a high accuracy.

Abstract: A motion conversion apparatus having a torque compensation device which is operable to cancel a fluctuation torque, acting on an input shaft due to an inertia load and a fluctuation torque acting on the input shaft due to a frictional load. The motion conversion apparatus converts a continuous rotational motion of the input shaft into a predetermined-type motion of an output shaft through a transmission cam device with the torque compensation device comprising a cam connected to the input shaft, a cam follower, and a resilient force-producing device pressing the cam follower against the cam.

Abstract: A fluctuation torque cancellation apparatus which positively cancels a torque fluctuation developing on an input shaft or an output shaft of a motion conversion apparatus for converting a continuous rotational motion of the input shaft into a predetermined-type rotational motion, such as intermittent rotational motions of the output shaft, and includes a torque compensation cam, fixedly mounted on a rotation shaft for rotation therewith and has a cam surface, formed on a peripheral surface which reciprocally moves a slider in a cylinder while rotating a cam follower and with a coil spring, mounted within the cylinder, being compressed and expanded, so that the magnitude of pressing force of the cam follower against the torque compensation cam is varied, thereby cancelling a fluctuation torque applied to the rotation shaft, thus effecting a torque compensation for the motion conversion apparatus and including a source of pressurized air supplied to an air chamber in the cylinder to selectively vary the pressin

Abstract: There is disclosed a mechanical pressing machine in which an unbalanced inertia force, produced during reciprocal movement of a slider, is canceled without producing deflection in the whole of the pressing machine, thereby enhancing dynamic precision. The slider, slidably mounted at a lower portion of a frame, is connected to a dynamic balancer, slidably mounted at an upper portion of the frame, by link mechanisms. A press cam, having a cam surface in contact with cam followers mounted respectively on the slider and the dynamic balancer, is fixedly mounted on a cam shaft. Dynamic balancer cams, each having a cam surface in contact with cam followers mounted respectively on interconnecting points of the link mechanisms, is fixedly mounted on the cam shaft. The dynamic balancer is driven to move in a direction opposite to a direction of movement of the slider, so that an unbalanced inertia force, produced in the moving slider, is canceled by an oppositely-directed inertia force produced in the dynamic balancer.

Abstract: A method and an apparatus for manufacturing tablets of moist powder which is produced by adding an additive agent such as an excipient or a binder to medical ingredients, further adding a solvent such as water, ethanol or the like, and kneading the mixture.

Abstract: A material feeding apparatus intermittently feeds a material having a relatively large width at high speed with high accuracy, whereby adjustment of the apparatus and the die maintenance can be readily performed, and the material will not be easily damaged. The material feeding apparatus includes a pair of gripper feeds which are provided on both the right and left sides of a press machine and actuated synchronously.

Abstract: It is an object of the present invention to realize a method and an apparatus for efficiently mass-producing tablets of high mechanical strength, accuracy and quality which are so excellent in solubility and collapsibility that they can be easily taken by persons of advanced ages and infants. By using a turn table and endless belt means to which a number of dies are connected, a part of which turn table contacts with the endless belt means, the turn table and the endless belt means being adapted to relatively move with respect to each other, receptacles are formed by pressing plastic polymer film in mold cavities of the dies. Moist powder supplied from a hopper into filling holes of the turn table is pressurizingly filled in the receptacles by means of a filling and pressurizing device in the region where the turn table is laid above the endless belt means.

Abstract: In a mechanical pressing machine, a torque compensation plate cam is mounted on one end of a crankshaft, and a cam follower mounted on a distal end of a piston rod of a resilient force-producing device is held in pressing contact with the torque compensation plate cam so as to cancel a load fluctuation produced on the crankshaft. The resilient force-producing device employs a compression coil spring or an air spring. The crankshaft may be of the dual type, in which case a slider is supported by two connecting rods. With this construction, a periodic inertial load fluctuation, repeatedly produced for every revolution during the operation of the mechanical press, is compensated for by the system for reserving energy, and hence is cancelled, thereby balancing the energy, so that variations in rotation of the crankshaft are eliminated, thereby reducing vibrations and noises.

Abstract: In a mechanical pressing machine, a flywheel is fixedly mounted on an input shaft, and a drive cam plate is fixedly mounted on the input shaft intermediate opposite ends thereof, and a torque compensation plate cam is mounted on the other end of the input shaft. A cam follower mounted on a distal end of a piston rod of a resilient force-producing device is held in pressing contact with the torque compensation plate cam so as to cancel a load fluctuation produced on the input shaft. The resilient force-producing device employs a compression coil spring or an air spring. With this construction, a periodic inertial load fluctuation, repeatedly produced for every revolution during the operation of the mechanical press, is compensated for by the system for reserving energy, and hence is canceled, thereby balancing the energy, so that variations in rotation of the input shaft are eliminated, thereby reducing vibrations and noises.

Abstract: There is disclosed a mechanical pressing machine utilizing a crankshaft, in which an unbalanced inertia force produced during a reciprocal movement of a slider is canceled without producing a flexure in the whole of the pressing machine, thereby enhancing a dynamic precision. A balance weight, which is equivalent in weight to the slider vertically slidably supported on a frame, is slidably mounted on an upper portion of the slider for vertical sliding movement. The slider is driven through a first crankshaft and a connecting rod, and at the same time the balance weight is driven in a direction opposite to the direction of movement of the slider through a first gear fixedly mounted on the first crankshaft, a second gear, an intermediate shaft, flexible couplings, a second crankshaft and a connecting rod. As a result, an inertia force produced in the slider is canceled by an oppositely-directed inertia force of the balance weight.

Abstract: There is disclosed a mechanical pressing machine utilizing a rotation cam, in which an unbalanced inertia force, produced during a reciprocal movement of a slider, is canceled in a slider system without producing a large flexure in the whole of the pressing machine, thereby enhancing a dynamic precision. The slider and a balance weight are mounted respectively on an upper portion and a lower portion of a frame for vertical sliding movement. The slider and the balance weight are connected through links to a pair of sliding blocks which are reciprocally movable in opposite horizontal directions through a rib cam. With this arrangement, the slider and the balance weight are reciprocally moved vertically in opposite directions, respectively, so that an inertia force of the slider is canceled in the slider system.

Abstract: There is disclosed a mechanical pressing machine of the general-purpose type which has advantages of a crank press, a knuckle press and a cam press. The pressing machine includes a slider which is mounted on a frame for vertical sliding movement, and has an upper press die mounted on a lower surface thereof, a pair of sliding blocks mounted respectively on right and left side portions of the frame for horizontal sliding movement, a pair of right and left connecting rods which are rotatably connected at their one ends to the sliding blocks, respectively, and are rotatably connected at their other ends to the slider, an input shaft which is rotatably mounted on the frame, and is connected at its one end to a flywheel, and a rib cam mounted on the other end portion of the input shaft, the rib cam having a peripheral portion held between cam followers and a roller follower, mounted on each of the pair of sliding blocks, so as to reciprocally move the pair of sliding blocks right and left in a symmetrical manner.

Abstract: A support apparatus for a coil material supply device includes first and second arms pivotally mounted at their proximal end portions on a frame by respective pins, a third arm which has distal end portions of the first and second arms pivotally supported thereon by respective pins, and also has the coil material supply device mounted on an upper end thereof, first and second length adjustment devices for adjusting the lengths of the first and second arms, respectively, and a rotating device for pivotally moving the first arm to adjust the angle of pivotal movement of the first arm. With this construction, the position of the coil material supply device with respect to an intermittent feed device of a mechanical press can be freely adjusted to set the optimum feed condition.

Abstract: A coil material supply apparatus is provided between an uncoiler for unwinding a coil material (or a leveler for flattening the unwound coil material) and an intermittent feed device of a mechanical press. This apparatus includes a pair of feed rollers for feeding the coil material upwardly, a servo motor for driving the feed rollers, position sensors for detecting the amount of a loop of the coil material, and a controller responsive to a detection signal from the position sensors for controlling the rotation of the servomotor to control the loop to an optimum amount. With this apparatus, the fluttering of the coil material is reduced even when a high-speed operation is effected, and the load on the intermittent feed device is reduced, and the length of the pressing line or length of coil material feeding path can be reduced.

Abstract: There is disclosed apparatus for reforming a work material into a flat configuration. A pair of first and second sprockets are mounted respectively on a drive shaft and a driven shaft disposed parallel relation to each other, the pair of sprockets being rotatable at the same speed. A first endless belt includes a plurality of first reforming rolls rotatably supported at their opposite ends by opposed first endless chains. A second endless belt includes a plurality of second reforming rolls rotatably supported at their opposite ends by opposed second endless chains. The first and second sprockets are engaged respectively with the first and second reforming rolls to move the first and second endless belts, respectively, and the first and second reforming rolls are brought into frictional rolling engagement respectively with opposed first and second support plates provided respectively in the first and second endless belts.