The present disclosure prevents load from being produced in an injection molding machine. The control device for an injection molding machine according to one embodiment of the present disclosure has a determining part that is configured to determine, based on information detected in accordance with a movement of a measurement motor provided in the injection molding machine, whether or not an operation of removing or attaching a screw that rotates in accordance with the measurement motor has been performed.

A plasticizing device includes: a flat screw that has a groove forming surface on which a spiral first groove is formed, and that rotates; a barrel that has a facing surface facing the groove forming surface and that includes a communication hole through which a plasticizing material flows; a heater that heats resin pellets; and a screw case that accommodates the flat screw and that includes a passage port through which the resin pellets pass toward the flat screw, in which the flat screw has a first side surface on which a first supply port for supplying the resin pellets to the first groove is formed and a second side surface formed on a side farther from the barrel than the first side surface, and a first distance, which is a shortest distance between the first side surface and the screw case, is larger than a second distance, which is a shortest distance between the second side surface and the screw case.

In a configuration in which a guide member that guides an intermediate member to be slidably movable is provided on an upper surface of side support plates, a bending buffer portion is provided in a first region of the side support plates which is located more outward than a part of the side support plates on which the guide member is provided. The bending buffer portion is configured to be bent and deformed easier than a second region of the side support plates in which the guide member is provided.

Injection unit (3) comprises: cylinder (32); screw (33) at least a part of which is housed in cylinder (32) and that is rotatable and movable in an axial direction of cylinder (32); drive shaft (42) that drives screw (33); connecting shaft (41) that connects screw (33) and drive shaft (42); and support member (52) that is located between screw (33) and drive shaft (42), that allows connecting shaft (41) to rotate and move axially, and that supports connecting shaft (41) at least in the vertical direction.

Provided are a molding screw and an FBI molding machine using the same for manufacturing resin molded articles for reduced manufacturing variation with use of a resin powder, an additive, and a mixture material constituted by an inorganic material or an organic material. The molding screw can include a feeding portion for feeding a molding material, a compressing portion, and a metering portion that extend continuously from the feeding portion. The feeding portion and the compressing portion each can be provided with a spiral flight. The flight of the compressing portion can include multiple sub flights that extend in a spiral manner in a screw axis direction. The sub flights can each have a polygonal shape with rounded corner portions, and are arranged such that the corner portions are shifted by a set angle with respect to the screw axis.

In order to calculate a ball screw abrasion amount of an injection-axis ball screw or a mold-clamping-axis ball screw, a position of a ball nut fitted to the ball screw is photographed by a camera installed in an injection molding machine. Then, if the photographed position of the ball nut is found, as a result of analysis of an image captured by the camera, to be deviated from the position of the ball nut when a ball screw has no abrasion, it is determined that the ball screw is abraded.

Disclosed are a power time sequence conversion method and device for manufacturing products in batches. A common power is sequentially coupled with power input ends of a plurality of execution mechanisms in different time periods, so as to provide in time order a plurality of power drives required during a batch manufacturing process of products, or provide power drives in different forms such as movements and forces to the same execution mechanism in a relaying manner in two adjacent time periods. A change gear capable of rotation and revolution is sequentially meshed with a plurality of tail end driving gears in different time periods, wherein the tail end driving gears are uniformly distributed in the circumferential direction and serve as power outputs, the revolution of the change gear is braked after each meshing to achieve the power drive of a certain execution mechanism in batch manufacturing of the products, and meanwhile, power drives in different forms such as movements and forces are provided to the same execution mechanism in a relaying manner through a torque converter. Compared with the conventional batch manufacturing of products where a plurality of independent power drives are required, the present invention has remarkable characteristics in low cost, low energy consumption, high reliability, good stability and the like.

A drive mechanism of an injection molding machine includes a position adjustment part capable of adjusting a relative position between a rear plate and a motor fixing member. The position adjustment part includes a plurality of screw holes formed in the motor fixing member, a plurality of bolts threadedly engaged with these screw holes, and an abutting part that abuts on these bolts. These bolts are rotated to abut on the abutting part, so that the relative position between the rear plate and the motor fixing member can be adjusted.

The application relates to a plasticizing unit with a cylinder and a screw that is rotatably mounted in the cylinder and has a screw section which is designed as a shearing section and in which a blocking web encircling the screw core in a helical manner and a main screw thread enclosed by the blocking web are provided. A shearing web runs in the main screw thread parallel to the blocking web at a lower height than the blocking web. In this manner, two screw threads are produced which run parallel to each other and are separated by the shearing web. The threads are designed in the form of wave screw threads. Each wave screw thread is equipped with one or more wave peaks with a surface which is designed in the form of a plateau and forms a wave peak shearing surface, wherein the wave peak shearing surface is located at the same height as the surface of the shearing web in the region. The shearing web surface section which lies in the region of a wave peak shearing surface constitutes a shearing web sharing surface. A wave peak shearing surface and a shearing web shearing surface together form a total shearing surface. A specified total shearing surface together with the inner wall of the cylinder forms a shearing gap in accordance with a shearing gap size specified for the total shearing surface.

A production plant includes an injection unit suitable for forming processes, and the injection unit includes a barrel and an injection actuator, a hydraulic system for moving the injection actuator, an safety device configured to output an access signal when access detecting a person accessing the production plant and/or a possibility of a person accessing the production plant, and an electronic control unit to operate the hydraulic system in a production mode and in a safety mode. The control unit is configured to switch from the production mode to the safety mode when the access safety device outputs the access signal, and is configured to operate the hydraulic system in the safety mode such that the hydraulic system at least partially, preferably completely, counteracts an axial movement of the injection actuator caused directly or indirectly by an action of a molding compound present in the barrel on the injection actuator.