JPH0719779Y2 - Injection molding machine - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an injection molding machine having an improved spacer mounting mechanism in the injection molding machine.

2. Description of the Related Art In a conventional injection molding machine, when mounting or replacing a mold on the injection molding machine, for example, a moving die plate a as shown in FIG. 2 is used according to the size (thickness) of the mold to be mounted. Between the ram b and the ram b, a four-divided spacer c having a desired thickness selected is suspended by a crane d, and each spacer c is moved to a movable die plate a and a ram b by a spacer through bolt e and a spacer mounting bolt f. It was stuck in between.

[Problems to be solved by the device]

However, at the time of exchanging dies having different thicknesses, spacers c divided into four having a thickness suitable for the dies are arranged between the moving die plate a and the ram b, respectively, and the spacer through bolt e and the spacer mounting bolt e are attached. The work of fixing the movable die plate a and the ram b to each other by f takes a long time for replacement and requires a lot of labor. The present invention was developed in view of the above points, and the purpose thereof is to significantly reduce the spacer replacement time during various mold replacements and to reduce the labor required for spacer replacement. It is to provide an injection molding machine that can be significantly reduced.

[Means for Solving the Problems]

Therefore, the present invention has the following configuration in order to effectively achieve the above object. That is, in an injection molding machine for forming a molded product by filling a molten resin into a mold sandwiched between a movable die plate and a fixed die plate, a hydraulic pressure is applied to a predetermined position on the fixed die plate side surface of the movable die plate. While arranging the clamps, a spacer plate with a predetermined thickness
The movable die plate can be removably attached to the fixed die plate side surface via the hydraulic clamp, and a die engaging groove is provided on the fixed die plate side surface of the spacer plate.

[Action]

With the above configuration, when the spacer is replaced with the replacement of the mold, first lift the already mounted spacer plate with a crane, release the clamp of the hydraulic clamp, and move this spacer plate to another place. Then, lift a new spacer plate with a crane etc., place it on the surface of the moving die plate on the fixed die plate side, and clamp it with the above hydraulic clamp provided at a predetermined position of the moving die plate to easily replace and install the spacer plate. It can be performed. Further, since the mold engaging groove is provided on the surface of the spacer plate on the fixed die plate side, the mold can be easily attached to or removed from the spacer plate by engaging the mold with the mold engaging groove. it can.

【Example】

An embodiment of the present invention will be described below with reference to FIG. The figure shows the essential parts of an injection molding machine 1 according to one embodiment of the present invention, in which 2 is a moving die plate, 3 is a ram, 4 is a spacer plate, and 5 is a hydraulic clamp. More specifically, this injection molding machine 1 is a horizontal injection molding machine, and a metal sandwiched between a movable die plate 2 that is moved by an operating mechanism such as a ram 3 and a fixed die plate (not shown). A mold (not shown) is filled with molten resin to form a molded product. Hydraulic clamps 5 are arranged on the surface 2a of the moving die plate 2 of the injection molding machine 1 on the fixed die plate side at four positions vertically and horizontally at predetermined intervals. The hydraulic clamp 5 is operated so that a predetermined object can be clamped. The spacer plate 4 formed so as to be able to engage with these four hydraulic clamps 5 is selected according to the thickness of the mold when mounting or replacing the mold, and the spacer plate 4 having this desired thickness is selected by the crane. Hanging and moving with die plate 2
Of the spacer plate 4 is lowered along the surface 2a on the fixed die plate side and engaged with the hydraulic clamp 5 described above, and the hydraulic clamp 5 is operated by the control of a hydraulic control mechanism (not shown). The spacer plate 4 can be detachably attached to the fixed die plate side surface 2a of the movable die plate 2 which is sandwiched by the clamps 5. With the above configuration, when the spacer plate 4 is replaced when the desired mold is mounted or when the mold is replaced, for example, when the mold is replaced, first, the spacer plate 4 already mounted is replaced.
The hydraulic clamps 5 are released from the clamps while being locked to the hooks of the crane via the wires. This spacer plate 4 is moved to another place by a crane, a spacer plate 4 of a desired thickness is newly lifted by a crane, and it is moved to the fixed die plate side surface 2a of the moving die plate 2 and provided on this side surface 2a. Locked to the positioning hook. Then, as described above, the spacer plates 4 are sandwiched by the hydraulic clamps 5 and fixed to the surface 2a of the movable die plate 2 on the fixed die plate side. Further, the spacer plate 4 is formed with lateral grooves 4a as mold engaging grooves at predetermined intervals, and another hydraulic clamp (not shown) is engaged with the lateral groove 4a, and a die (not shown) is engaged by this hydraulic clamp. Fix it. In this way, by simply selecting the desired spacer plate 4 suitable for the thickness of the mold, abutting it on the moving die plate 2 and stopping it with the hydraulic clamp 5, the desired spacer plate 4 can be easily attached to the moving die plate 2. Can be installed and removed,
The spacer replacement time of the injection molding machine 1 can be greatly shortened.

[Effect of device]

As is clear from the above description, according to the present invention, the spacer plate having both the die plate function and the spacer function can be easily attached and detached by the hydraulic clamp to attach the spacer plate of the desired thickness to the movable die plate. Can be removed. Therefore, as compared with the conventional mounting and replacement of the spacer, the working time can be significantly shortened, and the labor required for the working can be reduced. Further, since the mold engaging groove is provided on the surface of the spacer plate on the fixed die plate side, the mold can be easily attached to or removed from the spacer plate by engaging the mold with the mold engaging groove. it can.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment according to the present invention, and FIG. 2 is an explanatory view of a conventional example. 1 ... Injection molding machine, 2 ... Moving die plate, 4 ... Spacer plate, 5 ... Hydraulic clamp.

Claims (1)

[Scope of utility model registration request] 1. An injection molding machine for forming a molded product by filling a molten resin into a mold sandwiched between a movable die plate and a fixed die plate, wherein a predetermined surface of the movable die plate on the fixed die plate side is provided. A hydraulic clamp is provided at each position, and a spacer plate having a predetermined thickness can be detachably attached to the surface of the movable die plate on the fixed die plate side through the hydraulic clamp. An injection molding machine characterized in that a die engaging groove is provided on the side surface.