JPH0542946B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a foam resin molding device for simplifying the mounting of a molding die in a molding machine for manufacturing foam resin products such as foamed polystyrene molded products. It is.

[Conventional technology]

Generally, in the production of styrofoam molded products, expandable thermoplastic resin particles (hereinafter referred to as beads) are pre-foamed using an open/close mold, or they are filled into a cavity in a closed mold without pre-foaming, and then steamed. Usually, the material is injected and molded under heat, then cooled, the mold is opened, and the mold is released and then dried.

In this conventional foam molding machine, molds are provided in a movable steam chamber and a fixed steam chamber, and the molds are operated to control the distance between the two molds to obtain a predetermined foaming pressure. , open the abutting surfaces of the movable side steam chamber and the stationary side steam chamber where both molds are located, that is, the parting surface, and attach and remove the molding molds from each parting surface. Before starting the manufacturing process, the mold is manually attached, taking into account the shape and thickness of the mold.

[Problem that the invention seeks to solve]

Therefore, in conventional molding operations, the setting position must be adjusted manually, which is complicated and time-consuming, and moreover, it requires a space to open the parting surface and handle it, increasing the installation area of the entire device. There were some problems, and the process of opening the mold delayed workability, which was not satisfactory.

The present invention aims to accurately eliminate these conventional drawbacks, and allows the mold replacement operation to be performed from one direction on the opposite side of the parting surface without opening the parting surface. The purpose of the present invention is to provide a foam molding device with a simple configuration and compact form, which can significantly shorten adjustment time, be easy to handle, and perform highly safe preparation work for foamed polystyrene molding.

[Means for solving problems]

The present invention involves forming a cavity in the mold under a pressurized state by arranging male molds, female molds, or molding molds of female molds facing each other so as to be openable and closable, and filling the cavity with a raw material and heating and foaming it. A support plate is provided on the side opposite to the parting surface of the mold to be fitted into the steam chamber of the mold on one of the fixed sides, and a clamp frame is provided in contact with the support plate. This foamed resin molding apparatus is characterized in that it is provided with a machine frame that is arranged so as to be able to come into contact with and be taken away from it, and also that a machine frame is provided so that a clamper that is pressed and supported by a clamp frame can be freely engaged and detached.

[Effect]

In this foamed polystyrene molding apparatus, when raw materials (beads) are filled into the cavities 3 in the molding molds 1 and 2 and heated, a molded product is formed by the steam pressure and foaming gas pressure of the beads. It is possible to adjust the opening and closing operations of the molding die by controlling the moving drive unit, and to perform the opening and closing operations of the molding die optimally under ideal conditions, thereby making it possible to manufacture styrofoam molded products safely and efficiently. When adjusting the attachment and detachment of the molding molds, the clamper 5 is rotated to remove the molds from the clamp frame 4 without opening the abutting surfaces of the molding molds, that is, the parting surfaces, and the molds are removed from the opening 13 ₁ of the machine frame 13. After pulling out the clamp frame 4 and separating the support plate 12 from the steam chamber 11 and taking out the mold 1, remove the fixing bolts 2 of the mold 2 located further back.
The molding die 2 can be easily attached and detached from the steam chamber 22 by removing the molding die 2 from the steam chamber 22, and the replacement and setting work of the molding molds 1 and 2 can be carried out efficiently and safely from one direction on the opposite side from the parting surface. .

〔Example〕

In an embodiment of the present invention, a female mold 1 is provided in a steam chamber 11 on a fixed side, and a male mold 2 provided in a steam chamber 22 on a movable side is slidably opposed to the female mold 1. In the example of FIG. 1, a drive unit, for example a drive cylinder or motor (not shown),
A cavity 3 is formed in the mold under a pressurized state by disposing male mold, female mold, or molding molds 1 and 2 of female molds facing each other so as to be openable and closable, and the cavity 3 is filled with raw material and heated and foamed. The steam chamber 1 of the mold 1 on one of the fixed sides
A support plate 12 to be fitted into the mold is provided on the side opposite to the parting surface of the mold.
This is a foamed resin molding apparatus in which a clamp frame 4 that abuts on the machine frame 13 is disposed so as to be able to come into contact with and be separated from the machine frame 13, and a clamper 5 that is pressed and supported by the clamp frame 4 is provided on a machine frame 13 so as to be able to be freely engaged and detached.

The clamp frame 4 is a hollow cylindrical body with a flange portion 4 ₁ on the outer periphery, and is removably fitted into the opening 13 ₁ of the machine frame 13, and is pressed at a plurality of locations with a clamper 5. It is designed so that it can become established. And the clamper 5 is
A lever piece with both ends is rotatably and detachably attached to the machine frame 13 using a lock bolt 15, and a spherical washer ₅₁ is interposed therebetween. The support plate 12 is a rectangular plate that serves as a lid for sealing the opening of the steam chamber 11, and is clamped between the clamp frame 4 and the opening surface of the steam chamber 11 so that it can be fixed by pressure contact. ing.

In the figure, 1 ₁ is a female flange portion that can be attached to and detached from the molding die 1 using mounting screws 6 . 2 ₁ is a support plate for the male mold that can be attached to and removed from the molding die 2 with screws 7, 8 is a sealing member such as an O-ring, 9 is a parting surface, 1
0 is a moving frame, and 16 is a guide piece for positioning.

In addition, in the molding molds 1 and 2, the steam chamber 2 on the movable side including the movable frame 10 is closed before the mold closing is completed.
2, the molding die 2 is switched from high-speed mold closing to low-speed mold closing, and the mold closing completion position. When the mold stops closing or does not reach a predetermined position within a certain period of time, the position where the activation signal is issued to open the mold and drop the narrowed product, and the timing to push the product into the female mold with an eject pin etc. The eject position is the control position, the chain position is where you switch from low speed mold opening to high speed mold opening just before the mold opening is completed, and the mold opening completion position.In the case of a product with particularly poor mold release, there is a The mold is opened by the interval, closed again, and opened again to attach the product to the female mold and set the position to control the mold opening interval when performing catch ball-like mold release to make it easier to release the mold by ejecting. be driven.

In any case, male and female molding molds 1 and 2
When molding is performed in a mold by placing them facing each other so that they can be opened and closed, data on the completion of mold closing, cracking, ejection, and mold opening is detected by an analog sensor and inputted as an analog signal to determine the distance between the two molding molds. /D converter converts it into a digital signal, compares it with internal fixed data in a data processing unit, controls the driving unit such as a cylinder or motor that moves the mold, and adjusts the opening/closing operation of the mold. It is designed to do so.

In the specific example shown in FIG. 2, the molding die 1 is
A spacer 14 is used to attach the support plate 12 to the
The cavity 3 formed by the molding molds 1 and 2 can be arbitrarily set.

〔Effect of the invention〕

The present invention provides a support plate that is fitted into the steam chamber of one of the fixed molds to form a product by filling a cavity in the mold with a raw material and heating and foaming the material. A clamp frame is provided on the side opposite to the parting surface of the support plate and is attached to the support plate so that it can be attached to and detached from the machine frame, and a clamper that is pressed and supported by the clamp frame is detachably attached to the machine frame. Mold removal and adjustment can be done from one direction without opening the parting surface of the mold, which greatly reduces the time required for mold replacement and setting adjustment, and allows work to be done using a large space. Therefore, it is easy to handle and highly safe, and the preparation work for molding is simplified, and the adjustment of the molding mold is extremely reliable.The internal molding situation inside the mold can be accurately grasped and operated without any deviation, and the setting conditions can be changed. The number of man-hours involved is also easy and can be done quickly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a longitudinal sectional view of another embodiment. 1, 2...Molding mold, 1 ₁ ...Flange part, 2 ₁
... Plate, 3 ... Cavity, 4 ... Clamp frame, 4 ₁ ... Flange section, 5 ... Clamper, 6, 7 ... Mounting screw, 8 ... Seal member, 9
... Parting surface, 10 ... Moving frame, 1
1, 22...Steam chamber, 12...Support plate, 1
3... Machine frame, 13 ₁ ... Opening, 14...
...Spacer, 15...Clamp lock bolt.

Claims (1)

[Scope of Claims] 1. Molding molds 1 and 2 of a male mold, a female mold, or female molds are disposed facing each other so as to be freely openable and closable, and a cavity 3 is formed in the mold under a holding pressure state. In a device that molds a product by filling raw materials and heating and foaming them, a support plate 12 that is fitted into the steam chamber 11 of the molding mold 1 on one of the fixed sides is placed on the side opposite to the parting surface of the mold. The machine frame 1 is equipped with a clamp frame 4 that is in contact with the support plate 12 so as to be detachable, and a clamper 5 that is pressed and supported by the clamp frame 4 is detachably attached to the machine frame 1.
3. A foamed resin molding device characterized by being provided in 3. 2. The clamp frame 4 is a hollow cylindrical body having a flange portion 4 ₁ on the outer periphery, and is fitted into the opening 13 ₁ of the machine frame 13 so as to be freely insertable and removable. molding equipment. 3. The clamper 5 is rotatably and detachably attached to the machine frame 13 using a lever piece with both ends using a lock bolt 15, and a spherical washer ₅₁ is interposed therebetween. The molding apparatus according to scope 1 or 2. 4. Any one of claims 1 to 3, wherein the support plate 12 is a rectangular plate that serves as a lid for sealing the opening of the steam chamber 11, and is held between the clamp frame 4. Molding equipment as described in one section.