JPS5942617B2 - expanded polystyrene molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a polystyrene foam molding machine in which complicated piping such as a rubber hose is removed from a mold mounting frame on the movable side.

Expanded polystyrene molding machines are equipped with a large number of complicated piping systems to supply steam for heating and foaming, cooling water for mold cooling, etc. In particular, the piping for the mold on the movable side is made of flexible pipes such as rubber hoses. Since it is necessary to do this, the appearance is seriously damaged, and it takes time and effort to replace the mold, and there are various disadvantages such as the joints at the connecting parts are easily bent and damaged, and are prone to failure due to heavy wear.

The present invention was completed with the aim of providing a foamed polystyrene molding machine that does not have the above-mentioned drawbacks.As shown in the illustrated embodiment, a fixed platen 2 is installed on one side of a base 1. A steam supply pipe body 3 and a drainage pipe body 3 are horizontally inserted into the upper and lower parts of the plate, and a plurality of guide rods 5 stretched between the fixed plate 2 and the fixed die plate 4 are inserted. is hollow chamber 6
, 6 are attached to the upper and lower side frames so that the movable die plate 7 can move forward and backward, and the connecting pipes 8, 8, which are connected to the back surfaces of the hollow chambers 6, 6, are slid into the pipe bodies 3, 3. The mold mounting frame 10 is movably inserted into the mold mounting frame 10, and communication ports 9, 9 are provided on the front surfaces of the hollow chambers 6, 6, and the communication ports 9, 9 are attached to the front surface of the movable die plate 7. It is characterized in that the chamber 11 and the drainage receiving seat 11 are connected to each other.

In addition, 12 in the figure is a sealing mechanism for ensuring proper sealing between the tube bodies 3, ``3 and the connecting tubes 8, 8, and as shown in FIG. An annular groove 13 is provided on the inner surface of each section, and V-packings 14 whose outer peripheral edges are pressed against the connecting pipe 8 are fitted into the annular grooves 13 with their two-pronged openings facing rearward. 1? closes the back opening of the mold mounting frame 10 and creates a chamber 2 in the back of the mold 16'.
A box-shaped joint 1 is attached to a back plate part 10 forming a box-shaped joint 1.
? A fountain pipe "19," which distributes cooling water to the back of the mold 16 through a water supply pipe 18 connected through the steam distribution chamber 1;
1 and a large number of small holes are arranged on the inner wall surface of the drainage receiving seat 11.

In addition, the hollow chamber "6, 6, the steam distribution chamber 11, the drainage catch 11
The size of the hollow chamber 6 is not particularly limited.
, 7'6 may be made equal to the cross-sectional area of the connecting pipes 8, 8.

With this configuration, the fixed die 22 is attached to the fixed die plate 4 via the die attachment frame 15, and the die 22 on the fixed side is attached to the front of the die attachment frame 10 attached to the front of the movable die plate 7. Install the mold 16 on the movable side,
By driving the cylinder 20 that moves the movable die plate 7 forward and backward, the mold 16 on the movable side is moved forward and backward along the guide rod 5 stretched between the fixed platen 2 and the fixed die plate 4. Foamed polystyrene is produced through a series of steps: aligning the molds 16 and 22, supplying raw materials to the cavities 16 and 22 of the molds 16 and 22, clamping the mold, heating the mold with steam, cooling the mold with cold water, and opening the mold. Molding is carried out in the same manner as in conventional foamed polystyrene molding machines of this type, but the present invention provides a special mechanism for supplying steam and draining cooling water, thereby making it easier to attach the movable die plate 7 and the mold. The feature is that piping made of flexible tubes such as rubber hoses that were always required to be provided on the side of the frame 10 is eliminated, which improves the appearance and at the same time simplifies the work of housing the molds.

That is, a steam supply tube 3 and a drainage tube 3 made of a hard material are horizontally inserted into the upper and lower parts of a fixed platen 2 installed on one side of the base 1. Since the pipe body 3 is connected to the steam supply machine and the pipe body 3 is connected to the drain groove and left Δ, the hollow chambers 6, 6 of the movable die plate 7 and the pipe bodies 3, 3 are connected. are connected by connecting pipes 8, 8 made of a hard material that are slidably inserted into the pipe bodies 3, 3 even while the movable die plate 7 moves forward and backward. 3, the steam for mold heating is supplied from the steam supply machine through the connecting pipe 8, the hollow chamber 6 of the movable die plate 7, the communication port 9, the steam distribution chamber 11 of the mold mounting frame 10, and the steam distribution chamber 11. The mold 1 passes through the small hole 19 and the chamber 21 formed at the back of the mold 16.
The water used for cooling the mold 16 is sent to the back side of the mold 16, and the water is sent to the chamber 21, the small hole 19 of the drainage chamber 11 of the mold mounting frame 10, and the drainage chamber.
'1
1. The water is drained into the drainage ditch through the communication port 9, the hollow chamber 6 of the town moving die plate 7, the connecting pipe 8, and the pipe body 3.

Moreover, since rubber hoses for steam supply or drainage are not connected to the sides of the movable die plate 7 or the mold mounting frame 10, the appearance is good, and the movable die plate 7 can be moved smoothly. Since there is no need to remove the rubber hoses each time the mold mounting frame 10 is removed from the movable die plate 7 each time the mold is replaced, the mold replacement work is simplified and the connecting parts are damaged and malfunctions occur. This makes it durable for a long time. Therefore, the present invention brings a great deal to the industry by eliminating the drawbacks of conventional expanded polystyrene molding machines of this type.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway front view of the main part. 1: Base, 2: Fixed plate, 3, 3: Pipe body, 4: Fixed die plate, 5: Guide rod, 6, 6: Hollow chamber, 7: 11
1iT dynamic die plate, 8, 8: connection pipe, 9, 9: communication port, 10: mold mounting frame, 11: steam distribution chamber, '11: drainage receiving chamber.

Claims (1)

[Claims] 1. A fixed platen 2 is installed on one side of the base 1, and a steam supply pipe 3 and a drainage pipe 3' are horizontally inserted into the upper and lower parts of the fixed platen 2. A plurality of guide rods 5 stretched between the die plate 2 and the fixed die plate 4 have hollow chambers 6, 6.
Connecting pipes 8, 8' connected to the back surfaces of the hollow chambers 6, 6' are inserted into the tube bodies 3, 3' by attaching movable die plates 7, which are provided on the upper and lower side frames, so as to be able to move forward and backward. Insert freely into the
Further, communication ports 9, 9' are provided on the front surfaces of the hollow chambers 6, 6', and the communication ports 9, 9' are connected to the steam distribution chamber 11 of the mold mounting frame 10 attached to the front surface of the movable die plate 7. A foamed polystyrene molding machine characterized by communicating with a drainage receiving chamber 11'.