JP-7856239-B2 - injection molding machine

JP7856239B2JP 7856239 B2JP7856239 B2JP 7856239B2JP-7856239-B2

Inventors

丸本洋嗣

Assignees

住友重機械工業株式会社

Dates

Publication Date: 20260511
Application Date: 20221215

Claims (6)

A screw with a tag having identification information readable by a reader, A drive device that rotates and moves the screw forward and backward, A control device for controlling the aforementioned drive device, Equipped with, The control device controls the movement of the tag to a reading position where the reading device reads the identification information, in an injection molding machine.
The screw is equipped with a cylinder located inside, The screw has a piston that protrudes rearward from inside the cylinder, The tag is attached to the piston, and when the screw is in the forward limit position, the tag is housed inside the cylinder. The injection molding machine according to claim 1, wherein the reading position is located behind the rear end of the cylinder.
The screw is equipped with a cylinder located inside, The screw has a piston that protrudes rearward from inside the cylinder, The tag is attached to the piston, and when the screw is in the forward limit position, the tag is housed inside the cylinder. The cylinder has a through hole or notch that penetrates the screw radially, The injection molding machine according to claim 1, wherein the reading position is a position where the tag faces a through hole or notch in the cylinder.
The drive unit comprises a movable member that transmits the driving force of the drive unit to the screw, and a connecting member that connects the movable member and the screw. The connecting member has a through hole or notch that penetrates the screw in the radial direction, The injection molding machine according to claim 1, wherein the reading position is a position where the tag faces a through hole or notch in the connecting member.
The screw is equipped with a cylinder located inside, The screw has a piston that protrudes rearward from inside the cylinder, The tag is attached to the piston, and when the screw is in its forward limit position, the tag protrudes rearward from the rear end of the cylinder. The injection molding machine according to claim 1, wherein the reading position is located behind the rear end of the cylinder.
The drive unit comprises a movable member that transmits the driving force of the drive unit to the screw, a connecting member that connects the movable member and the screw, and a box that forms a chamber inside in which the connecting operation between the movable member and the screw is performed. The box has an opening into which the worker performing the connection work enters, The injection molding machine according to any one of claims 1 to 5, wherein the reading position is a position in which the tag faces the opening of the box.

Description

This invention relates to an injection molding machine. The injection molding machine described in Patent Document 1 comprises a cylinder, a nozzle provided at the front end of the cylinder, and a screw provided inside the cylinder. When the screw is rotated, pellet-shaped resin is fed forward along the screw's helical groove. As the resin is fed forward, it gradually melts due to the heat from the cylinder. As the molten resin accumulates in front of the screw, the screw is retracted. Then, when the screw is advanced, the liquid resin accumulated in front of the screw is injected from the nozzle. The screw is tagged with identification information. Japanese Patent Publication No. 2018-8424 Figure 1 shows the state of an injection molding machine upon completion of mold opening according to one embodiment.Figure 2 shows the state of an injection molding machine during mold clamping according to one embodiment.Figure 3 is a cross-sectional view showing a first example of an injection device, and is a cross-sectional view showing the state when the screw is in the forward limit position.Figure 4 is a cross-sectional view showing an example of the screw in Figure 3 in a retracted position.Figure 5 is a cross-sectional view showing an example of a movable member and a connecting member.Figure 6 is a cross-sectional view showing a second example of an injection device.Figure 7 is a cross-sectional view showing a third example of an injection device.Figure 8 is a cross-sectional view showing a fourth example of an injection device. The embodiments of the present invention will be described below with reference to the drawings. Note that identical or corresponding components in each drawing are denoted by the same reference numerals, and their descriptions may be omitted. (injection molding machine) Figure 1 shows the state of an injection molding machine when the mold opening is complete according to one embodiment. Figure 2 shows the state of the injection molding machine when the mold is clamped according to one embodiment. In this specification, the X-axis direction, Y-axis direction, and Z-axis direction are perpendicular to each other. The X-axis direction and Y-axis direction represent the horizontal direction, and the Z-axis direction represents the vertical direction. When the mold clamping device 100 is horizontal, the X-axis direction is the mold opening and closing direction, and the Y-axis direction is the width direction of the injection molding machine 10. The negative side in the Y-axis direction is called the operating side, and the positive side in the Y-axis direction is called the non-operating side. As shown in Figures 1 and 2, the injection molding machine 10 includes a clamping device 100 for opening and closing the mold device 800, an ejector device 200 for ejecting the molded product formed in the mold device 800, an injection device 300 for injecting molding material into the mold device 800, a moving device 400 for moving the injection device 300 forward and backward relative to the mold device 800, a control device 700 for controlling each component of the injection molding machine 10, and a frame 900 for supporting each component of the injection molding machine 10. The frame 900 includes a clamping device frame 910 for supporting the clamping device 100 and an injection device frame 920 for supporting the injection device 300. The clamping device frame 910 and the injection device frame 920 are each installed on the floor 2 via leveling adjusters 930. The control device 700 is located in the internal space of the injection device frame 920. The components of the injection molding machine 10 will be described below. (mold clamping device) In describing the mold clamping device 100, the direction of movement of the movable platen 120 when the mold is closed (for example, the positive X-axis direction) is described as forward, and the direction of movement of the movable platen 120 when the mold is open (for example, the negative X-axis direction) is described as backward. The mold clamping device 100 performs mold closing, pressure increasing, mold clamping, pressure release, and mold opening of the mold apparatus 800. The mold apparatus 800 includes a fixed mold 810 and a movable mold 820. The mold clamping device 100 is, for example, horizontal, with the mold opening and closing direction being horizontal. The mold clamping device 100 includes a fixed platen 110 to which a fixed mold 810 is attached, a movable platen 120 to which a movable mold 820 is attached, and a moving mechanism 102 that moves the movable platen 120 relative to the fixed platen 110 in the mold opening and closing direction. The fixed platen 110 is fixed to the mold clamping device frame 910. The fixed mold 810 is attached to the surface of the fixed platen 110 facing the movable platen 120. The movable platen 120 is positioned to move freely in the mold opening and closing direction relative to the mold clamping