JPH03295633A - Foam molding machine - Google Patents

Abstract

PURPOSE:To simplify the piping system on a movable mold structure side and contrive to improve the reliability of the maintenance of piping systems by a method wherein air, steam and cooling water are made selectively chargeable to and dischargeable from a movable side steam chamber, which is provided on a fixed mold structure side, under mold closing condition. CONSTITUTION:A molding material feeding part 34 is provided on a fixed mold structure 3 side so as to feed and fill prefoamed beads. Further, on the fixed mold structure 3 side, the charging system and discharging system of air, steam and cooling water for respective steam chambers are collectively provided. And, when a movable mold structure 7 comes into position closely contacting with the fixed mold structure 3 through the running of a truck 6, the rotation of a motor 11 is stopped. Further, with said close contacting action, the charging pipes 62, 63 and 64 of air, steam and cooling water for moving side steam chamber and pipes to be charged 70, 71 and 72 of air, steam and cooling water are automatically joined and connected to each other through a sealing packing 69 and a discharging pipe 67 for the moving side steam chamber and a pipe to be discharged 73 are also automatically joined and connected to each other through a sealing packing 69. Furthermore, just before the end of the mold closing process, a locking means 15 engages, resulting in keeping the fixed mold structure 3 and the movable mold structure 7 in the state closely contacting with each other until just before the mold opening process starts.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is characterized in that a movable mold structure moves toward and away from a fixed mold structure, and both mold structures each have independent steam chambers. Regarding the foam molding machine.

[Prior Art] Recently, in the field of civil engineering foundation work, when embanking is carried out on soft ground, etc., large styrofoam blocks (as shown in Fig. 9) are used instead of soil at the bottom of the paved surface. Lightweight blocks for embankment) 101 are stacked on the ground 102 and connected to each other, and after applying embankment 103 around the paved surface 104
is being formed. If such a method is adopted, roads, runways, etc. built on soft ground will not suffer long-term subsidence. The lightweight block body 101 for embankment is, for example, a U-shaped cross section as shown in FIG. 10, or an H-shaped cross section as shown in FIG. 11, and the one shown in FIG. , the length L
= 2000mm, width W=1000mm, height H=50
(The size is about 1+++*, and in the case shown in No. 11 [1, the length L = 2000 + am, the width W = 1
000mm and height H=750mm. That is, foam molded products are used that are considerably larger than general foam molded products.

Such large-sized foam molded products have uses other than the above-mentioned lightweight blocks for embankments, such as simple moldings, and the demand for large-sized foam molded products is increasing. Additionally, there is a strong demand for plate-shaped foam molded products made by slicing large rectangular parallelepiped foam molded products (blocks), and it is desired to develop a foam molding machine suitable for molding such large foam molded products. ing.

[Problems to be Solved by the Invention] By the way, conventional foam molding machines for this type of large-sized foam molded products are simply larger versions of the same structure as general-purpose foam molding machines. In other words, the fixed side mold structure side is provided with a supply piping system for air, steam, and cooling water for the fixed side steam chamber, and a discharge (drain) piping system from the fixed side steam chamber, and a movable side mold structure side. Similarly, on the mold structure side, a piping system for supplying air, steam, and cooling water for the movable side steam chamber, and a discharge (drain) piping system from the movable side steam chamber were arranged.

However, if a configuration is adopted in which multiple piping systems are also provided in the movable mold structure as described above, the movable mold structure will travel along with the piping systems as the mold opens and closes. Piping systems are susceptible to repeated deformation, deterioration of strength due to fatigue caused by use over time, tangles, snags, and unexpected damage to the piping system, which poses safety problems. In particular, in foam molding machines for large foam molded products, the mold opening/closing stroke becomes large, and the amount of deformation of the piping system connected to the fully movable mold structure increases, making it difficult to maintain the piping system. There's a problem.

In addition, since a large number of piping systems are connected separately to the fixed mold structure and the movable mold structure, it is disadvantageous in terms of maintenance, and it is an obstacle to consolidating the piping systems. It became.

Therefore, the technical problem to be solved by the present invention is to solve the problems of the above-mentioned prior art, and its purpose is to eliminate the piping system on the movable mold structure side, and to Therefore, it is an object of the present invention to provide a foam molding machine that has high reliability in maintaining the piping system and can consolidate the piping system.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has a structure in which a movable mold structure having a movable mold approaches and separates from a fixed mold structure having a fixed mold. In the foam molding machine, a molding material supply section for supplying and filling pre-expanded particles into a cavity formed when the mold is closed is provided on the fixed side mold structure side, a fixed steam chamber in the fixed mold structure, and Air, steam, and cooling water supply piping systems for the movable side steam chamber in the movable side mold structure and discharge (drain) piping systems for each of the steam chambers are arranged centrally, and the The air, steam, and cooling water supply piping system for the movable side steam chamber and the discharge piping system for the movable side steam chamber, which are disposed on the fixed side mold structure side, are connected to the movable side when the mold is closed. They are configured to be connected to corresponding receiving piping systems disposed in the mold structure via seal packings, respectively.

[Operation] When the mold is closed, that is, the movable mold structure is in close contact with the fixed mold structure, the air and steam for the movable steam chamber provided on the fixed mold structure are , the cooling water supply piping system and the discharge piping system are connected to the corresponding receiving piping system installed in the movable mold structure through seal packings, thereby supplying air and steam to the movable steam chamber. , cooling water can be selectively supplied, and air, steam, and cooling water can be selectively discharged from the movable side steam chamber.

By doing this, there is no need to directly connect the piping system to the movable mold structure that moves forward and backward during mold opening and closing operations.
Therefore, since the movable mold structure does not travel along with the piping system, reliability in maintaining the piping system is increased. In addition, all the piping systems can be arranged in a concentrated manner on the stationary mold structure side, which improves piping space efficiency and facilitates maintenance of the piping system.

[Example] The present invention will be described below with reference to illustrated examples. Although this embodiment is shown as having a mold structure for molding the lightweight block body 101 for embankment having an H-shaped cross section, by changing the shape of the mold,
It is possible to mold large foam molded products of appropriate shapes, such as lightweight blocks for embankments in other shapes, live cages, or blocks in the perfect rectangular parallelepiped shape.

FIG. 1 is a partially simplified front view of a foam molding machine according to this embodiment, and FIG. 2 is a partially simplified right side view thereof.

In FIG. 1, 1 is a base frame fixed to the floor surface, 2 is a control device frame fixedly installed on the base frame 1 and has a control device (not shown) built therein, and 3 is also on the base frame 1. This is a fixed side mold structure fixedly installed through a support frame 4. 5A and 5B are a pair of parallel rails fixedly mounted on the base frame 1 (see FIG. 2), and are provided on the right side of the base frame 1 as shown. Reference numeral 6 denotes a cart that can run on the rails 5, and the cart 6
A movable mold structure 7 is fixedly attached thereto.

The trolley 6 is provided with two pairs of wheels 8A and 8B that engage with the rails 5A and 5B, and as shown in FIG. The wheels 8B are simply rotatably mounted on the other rail 5B. By doing this, rail 5A,
It is designed to alleviate the severe parallelism of 5B. The wheels 8A and 8B that are paired with each other have an axle 9A.
, 9B, and the axles 9A, 9B are rotatably held by bearing means 10 within the truck 6 (the axle 9B side is not shown). As shown in FIG. A motor (for example, an AC motor) 11 is mounted on the top, and the rotation of the motor 11 is connected to a pulley 13 (attached to the one axle 9A via a belt 12).
(FIG. 2), the wheels 8A and 8B rotate, and the carriage 6 and the movable mold structure 7 move forward or backward relative to the fixed mold structure 3. There is. In addition, in FIG. 1, 14 is a shock absorber provided at the most retracted position of the truck 6.

As mentioned above, unlike general-purpose foam molding machines, the foam molding machine of this embodiment has a structure in which there is no tie bar between the fixed mold structure 3 and the movable mold structure 7, and The mold structure 7 side moves forward and backward in a self-propelled manner, that is, opens and closes the mold. Therefore, the mold opening/closing stroke can be set to any desired value, making it possible to handle a wide range of large foam molded products with different thicknesses. In addition, since there are no tie bars, there are no restrictions on the direction in which the product can be taken out, making it extremely easy to take out the product, and mold replacement is also easy.
Become certain. Furthermore, since an operator can easily enter the mold opening space when the mold is open, maintenance and inspection are also facilitated.

The movable mold structure 7 is provided with a plurality of locking means 15 for maintaining the close contact between the fixed mold structure 3 and the movable mold structure 7 when the mold is closed. In this embodiment, as shown in FIG. 3, the locking means 15 is rotatably held on the upper surface of the movable mold structure 7 by a support 16, and is given a clockwise rotational behavior by a spring. a lock piece 17 and a bush-operated electromagnetic actuator 1 capable of pushing up one end 17a of the lock piece 17;
It is equipped with 8. On the other hand, a locked member 19 capable of locking the other end 17b of the lock piece 17 is provided on the upper surface of the stationary mold structure 3. This locked member 1
Reference numeral 9 is made of, for example, a cylindrical member extending in the direction of the front and back of the paper, and is fixed to the stationary mold structure 3 by a support 20 . When the mold is closed, as shown in the third Cffl (a), the lock piece 17 is rotated to the left by the drive of the electromagnetic actuator 18, and the other end 17b is rotated to the locked member 19.
As a result, the fixed mold structure 3 and the movable mold structure 7 are kept in close contact with each other. In addition, just before the mold opening process, the electromagnetic actuator 1
When the power to the electromagnetic actuator 8 is cut off, the operating rod of the electromagnetic actuator 18 is moved to the retracted position by the spring inside itself, and the lock piece 17 is rotated to the right by the force of the spring (not shown), and the lock piece 17 The other end portion 17b is configured to separate from the locked member 19. In addition, Fig. 3 (b
) indicates this unlocked state.

The locking means 15 described above can have any configuration, but
Since the device is for large foam molded products, it is desirable to provide a plurality of devices. In addition, in this embodiment, for simplicity of illustration, it is provided only on the upper surface of the mold structure, but it is not only provided on the upper surface of the mold structure, but also on its side or, in some cases, on its lower surface. It is more desirable to arrange the locking means 15 in a dispersed manner; however, the locking means 15 may be provided in the fixed mold structure 3 and the locked member 19 may be provided in the movable mold structure 7. FIG. 8 shows a modification of the locking means, and the locking means 1 shown in the figure
The locking piece 17' at 5' is driven and controlled by an air cylinder 21 to engage and disengage from the locked member 19''.

As described above, since a plurality of locking means 15 (15') are provided to maintain the close contact between the fixed mold structure 3 and the movable mold structure 7 when the mold is closed, the tie bar Even with a non-contact structure, the mold can be sufficiently closed and kept in close contact with a high degree of reliability against foaming and expanding molded products.

As shown in FIG. 4, the stationary die structure 3 is provided with a stationary die plate 22 that is properly fixed to supporting means, and the stationary die plate 22 is attached to a stationary die frame (a box-shaped frame). )23 is attached. 24 is
The eject member is movable back and forth with respect to the fixed die plate 22 and the fixed mold frame 23, and is driven and controlled by an appropriate drive source such as an air cylinder (not shown). 25 is a first fixed mold plate fixed to the eject member 24; 26 is a second fixed mold plate fixed over the entire inner circumference of the fixed mold frame 23; Known fine slits are formed in the cavity defining surface (the surface in contact with the foamed molded product) of the second stationary mold plate 25,26. As shown in FIG. 4(a), when the eject member 24 is in the retracted position, the fixed mold frame 23. The first fixed mold plate 25 forms a fixed side bottom steam chamber 27, and the fixed mold frame 23. A fixed side side steam chamber 28 is formed by the second fixed mold plate 26.

Also, as shown in FIG. 4, the movable die structure 7 is provided with a movable die plate 29 mounted and fixed on the trolley 6, and the movable die plate 29 is provided with a movable die plate 29. A frame (box-shaped frame) 30 is attached. Reference numeral 31 denotes a movable mold plate fixed to the movable mold frame 30, and a well-known fine slit is also formed in this cavity defining surface (the surface that comes into contact with the foamed molded product).

And a movable mold frame 30. A movable mold plate 31 forms a moving side steam chamber 32. In addition, in FIG. 4(a), 33 indicates each of the mold plates 25, 26.
31 (filling/forming part of the foamed molded product).

As shown in FIG. 1, a molding material supply section 34 is provided above the stationary mold structure 3. As shown in FIG.

Since the cavity 33 has a large volume, a plurality of molding material supply units 34 are installed to uniformly and rapidly fill the pre-expanded particles into the cavity 33. In this embodiment, four molding material supply units 34 are provided. Supply sections 34 are arranged in parallel (FIG. 2). Each molding material supply section 34 is connected to a main supply duct 3 from a silo-shaped pre-foamed grain storage 35, for example.
6. Manifold (branch pipe fitting) 37. Sub supply duct 38
゜Through the suction port 39, the pre-expanded particles are fed to the blower described later.
The pre-expanded particles are sent in by a force of 40, thereby filling the cavity 33 from the molding material supply section 34 with the pre-expanded particles.

Reference numeral 40 denotes a blower installed on the control device frame 2, and the air sent out from the air outlet of the blower 40 is sent to a main air duct 41, a manifold (branch pipe fitting) 42. The molding material is supplied from the sub-air duct 43 to the nozzle pipe section 44 of the molding material supply section 34 .

As shown in FIG. 5, the molding material supply section 34 is provided with a vertical pipe section 45 extending to the cavity 33, and a raw material receiving pipe section 46 extending obliquely upward from the vertical pipe 45. The nozzle pipe $44 is the raw material receiving pipe section 4.
6, and this part has a double pipe structure. The suction port 39 for the pre-expanded grains is provided on the side surface of the end of the raw material receiving pipe section 46 . Further, at the tip of the nozzle pipe portion 44, a check valve (check valve) means for preventing backflow of the pre-expanded grains is provided.In this embodiment, the check valve means 47 is provided with a blower -40 Closes with its own elastic force when there is no air blowing, and opens immediately when air is blowing, for example, soft P
Although the check valve means 47 is constructed of a combination of a plurality of cut plates made of a VC plate or a rubber plate and a backflow prevention wire mesh, the structure of the check valve means 47 is arbitrary. That is, the check valve means 47 is for preventing pre-expanded grains from entering the blower 40 during a blowback process, which will be described later.

When air is blown from the blower 40 to the nozzle pipe part 44, negative pressure is generated by the constricted part of the nozzle pipe part 44 and the constricted part of the raw material receiving pipe part 46 (the M material receiving pipe part 46 is The pre-expanded grains sucked from the suction port 39 pass through the opened check valve means 47 and the raw material receiving pipe section 4.
6. The cavity 33 is supplied and filled through the vertical pipe section 45.

Thus, in this embodiment, the single blower 40 serves as a suction/transport means for the pre-expanded grains from the pre-expanded grain storage 35 to each of the molding material supply sections 34, as well as from the molding material supply section 34 to the cavity. Since it functions as a means for filling the pre-expanded grains into 33, the number of driving sources can be reduced. Moreover, instead of providing a dedicated large hopper near the foam molding machine and supplying the pre-foamed grains from there, the pre-foamed grains storage 35 is provided at a considerable distance from the foam molding machine. Since the pre-expanded particles can be directly drawn in, there is no need to replenish the hopper of each individual molding machine, which greatly reduces the burden on workers when molding large foam products.

In addition, each molding material supply section 34 includes an air cylinder 48.
A plug 50 fixed to the piston rod 49 of the air cylinder 48 is movable up and down within the vertical tube section 45. This air cylinder 4
The plug 50 driven by the blower 40
After filling the cavity 33 with
The pre-foamed particles in the vertical tube part 45 are pushed into the cavity 33, and the entrance of the cavity 33 is closed.

Furthermore, the vertical pipe portion 45 of each molding material supply section 34
are each provided with a compressed air supply port 51.

As shown in FIG. 1, the compressed air sent out from the compressed air supply source (near compressor, etc.) 52 is transferred to the main air duct 53. Manifold (branch pipe fitting) 54. The compressed air is supplied from the auxiliary air duct 55 to the compressed air supply ports 51, respectively. Air supplied from this compressed air supply port 51 to the molding material supply section 34 is used for so-called blowback. After the blower 40 completes filling the cavity 33 with the pre-expanded grains, a blowback process starts before the plug 50 descends, and the pre-expanded grains stuck in the vertical pipe section 45 are removed from the raw material. The plug 5o is pushed back toward the receiving pipe portion 46, and blowback is performed for only a few seconds even after the plug 5o finishes descending. In addition, when the check valve means 47 is provided on the inlet side of the nozzle pipe section 44 (upstream side of the suction port 39), excess pre-expanded grains due to blowback are transferred to the sub-supply duct for the raw material. It will be pushed back to 38.

In this embodiment, as described above, the molding material supply section 34 is provided on the fixed side mold structure 3 side,
A supply system for 1,000 mu bubbles, a conveyance/filling air supply system by the blower 40, and a blowback air supply system by the compressed air supply source 52 are concentrated in the stationary mold structure 3.

In addition to this, in this embodiment, air for each of the steam chambers 27, 28, and 32 described above is provided on the fixed side mold structure 3 side.

The steam, cooling water supply system, and discharge system are arranged centrally, and by doing so, these piping systems to the movable mold structure 7 side can be eliminated, and thus , the movable mold structure 7 side is configured so that it is not necessary to run the piping system one by one.

Next, the air, steam, and cooling water supply system to the steam room described above, as well as the air, steam, and cooling water discharge system from the steam room, are as follows.
This will be explained with reference to FIGS. 6 and 7. Figure 6 is a simplified explanatory view from the front showing the supply system and exhaust system for air, steam, and cooling water, and Figure 7 is a simplified explanatory view from the top showing only the supply system for air, steam, and cooling water. FIG.

As shown in FIGS. 6 and 7, a fixed side bottom steam chamber air supply pipe 56 for the fixed side bottom steam chamber 27 is provided on the fixed side mold structure 3 side. Steam supply piping for fixed side bottom steam chamber 57. Cooling water supply piping 58 for the fixed side bottom steam chamber, air supply piping 59 for the fixed side side steam chamber for the fixed side side steam chamber 28, and steam supply piping 60 for the fixed side side steam chamber.
．． Fixed side side steam chamber cooling water supply piping 61 and movable side steam chamber air supply piping 62 for the movable side steam chamber 32
．． Steam supply piping 63 for the moving side steam room. A moving-side steam chamber cooling water supply pipe 64 is provided. Also, as shown in FIG. 6, on the fixed side mold structure 3 side, a fixed side bottom steam chamber discharge (drain) pipe 65 for the fixed side bottom steam chamber 27 and a fixed side side side steam chamber 28 are provided. Exhaust (drain) piping 66 for the fixed side side steam chamber and movable side steam chamber 3
A discharge (drain) pipe 67 for the moving side steam chamber for the steam chamber 2 is provided. Note that 68 is an electromagnetically driven on/off control valve installed in each supply system piping and discharge system piping.

Air, steam, and cooling water supply piping 5 for the fixed side bottom steam chamber
6, 57, 58 are guided into the fixed side bottom steam chamber 27,
Air is sent to the fixed side bottom steam chamber 27 from an air, steam, and cooling water supply source (not shown).

Selectively supplies steam and cooling water. Moreover, the air, steam, and cooling water in the fixed side bottom steam chamber 27 are selectively discharged from the fixed side bottom steam chamber exhaust pipe 65. Air, steam, and cooling water supply piping 59, 60 for the fixed side side steam chamber.
Reference numeral 61 denotes air (not shown) that passes through the fixed side bottom steam chamber 27 and is guided into the fixed side side steam chamber 28 .

Steam, air, steam delivered from a cooling water supply.

Cooling water is also selectively supplied. Further, the air, steam, and cooling water in the fixed side side steam chamber 28 are also selectively discharged from the fixed side side steam chamber discharge pipe 66 in the same manner.

The moving side steam room air, steam, and cooling water supply piping 62,
63 and 64 extend through the fixed side bottom steam chamber 27 and the fixed side side steam chamber 28 to the end face of the fixed side side steam chamber 28, while on the movable side steam chamber 32 side, a seventh As shown in the figure, each supply pipe 62, 63.6 when the mold is closed.
4 and the air supply pipe 70 and the steam supply pipe 71 . Cooling water receiving pipe 7
2 are provided respectively. Further, as shown in FIG. 6, the movable steam chamber exhaust pipe 67 is externally attached to the stationary mold structure 3 and extends to a position flush with the end surface of the stationary side steam chamber 28. On the other hand, a discharge pipe 73 is provided extending from the moving side steam chamber 32 side, which is connected to the moving side steam chamber discharge pipe 67 via a seal packing 69 when the mold is closed. Therefore, when the mold is closed, the air supply piping 62 for the moving side steam chamber, the air supply receiving piping 70,
Steam supply piping 63 and steam supply receiving piping 7 for the moving side steam room
1. Cooling water pipe 64 for moving side steam room and cooling water receiving pipe 7
2, and the discharge pipe 67 for the moving side steam chamber and the discharge pipe 7
3 are automatically connected by seal packings 69, respectively, and thereby air and steam (not shown) are supplied to the moving side steam chamber 32.

Air, steam, and cooling water sent out from a cooling water supply source are selectively supplied, and air, steam, and cooling water are selectively discharged from the moving side steam chamber 32.

As mentioned above, each steam chamber 27, 28, 32 has an independent air, steam, and cooling water supply system as well as an exhaust (
A drain) system is installed, and by doing this,
Quick for each relatively large steam chamber (27°28.32
It is possible to supply air, steam or cooling water (with good pressure and heat response) and discharge them, and to supply each steam chamber 27, 28, 32 simultaneously or individually selectively. /Discharge operation can be performed.

Furthermore, as mentioned above, on the fixed side mold structure 3 side,
A molding material supply section 34 is provided, and a pre-expanded grain supply system, a conveyance/filling air supply system using a blower 40, and a blowback air supply system using a compressed air supply source 52 are centrally arranged. And on the fixed side mold structure 3 side,
Coupled with the fact that the air, steam, and cooling water supply systems and exhaust systems for each steam chamber 27°28.32 are centrally arranged, the movable mold structure 7 side can be configured without directly connecting the troublesome piping system.

Therefore, since there is no piping system that moves along with the movement of the movable mold structure 7, there is no risk of entanglement or damage to the piping system, resulting in excellent safety. In addition, all the piping systems can be arranged in a concentrated manner on the side of the fixed mold structure 3, which improves piping space efficiency and facilitates maintenance of the piping system.

In FIGS. 1 and 4, reference numeral 74 is a conveyor means that can be raised and lowered, such as a roller conveyor, which assumes a retracted position lowered to the bottom of the mold opening space when the mold is closed, and when the mold is opened and the product is taken out. It rises into the mold opening space to receive the foamed molded product 75.

Next, the operation of the foam molding machine of this embodiment having the above-described configuration will be explained.

First, after taking out the foam molded product 75 molded in the previous cycle, the movable mold structure 7 on the trolley 6 is driven by the rotation of the motor 11 to move together with the trolley 6 from the mold opening position in the mold closing direction. be done. At this point, the conveyor means 74 is in the lowered retracted position.

When the movable mold structure 7 reaches the position where it is in close contact with the fixed mold structure 3 due to the traveling of the cart 6 described above (see FIG.
a)), the rotation of the motor 11 is stopped6, and as the movable mold structure 7 comes into close contact with the stationary mold 3, the air, steam, and cooling water for the movable steam chamber described above are released. The supply pipes 62, 63° 64 and the air, steam, and cooling water supply and receiving pipes 70, 71, 72, and the above-mentioned discharge pipe 67 for the movable side steam chamber and the discharge receiving pipe 73 are connected by seal packings 69, respectively. Automatically combined and connected. Immediately after the end of this mold closing process, the locking means 15 is driven and the locking piece 17 engages with the locked member 19, so that the fixed mold structure 3 and the movable mold structure 7 The state of close contact with the mold is maintained until just before the mold opening process.

Next, the blower 40 is activated, and the pre-expanded particles are supplied and filled into the cavity 33 through the molding material supply section 34 from the suction port 39 of the molding material supply section 34 . In addition, during this filling process, the discharge piping 65, 66.67 from each of the steam chambers 27, 28. You may also encourage (
As the driving source for this intake air, the intake section of the blower 40 can be used. Then, the filling of the cavity 33 is completed, and the pre-expanded particles are transferred to the vertical pipe section 4 of the molding material supply section 34.
The blower 40 is stopped when the amount of water starts to accumulate in the tank 5.

Subsequently, air is supplied from the compressed air supply port 51 to the vertical pipe portion 4.
During this time, the plug 50 is lowered to the surface of the cavity 33 by the drive of the air cylinder 48, and the plug 50 is blown into the cavity 3.
Block 3.

Next, the discharge piping 65 from each steam chamber 27, 28, 32,
Steam is supplied to each steam chamber 27, 28, 32 from each steam chamber steam supply pipe 57, 60, 63 while maintaining the open state of 66, 67 and disconnecting from the intake system. Perform preheating. Next, the discharge pipes 65, 66
．． With one or two of 67 selectively closed,
Steam chambers 27, 28.3 corresponding to the closed discharge pipes
selectively supplying steam only to cavity 3.
Flow heating is performed several times as necessary to heat the raw material that has started to foam in Step 3. After this, all discharge piping 65
, 66.67 are closed, each steam chamber 27, 28.3
Steam is supplied to 2 to heat the entire surface. Through this heating process, the pre-expanded particles are completely expanded and brought into a close contact state.

After the above heating process is completed, each discharge pipe 65°66.6
7 is closed, cooling water is supplied from the steam chamber cooling water supply pipes 58, 61, 64 to each steam chamber 27, 28, .
32 and precooling is performed. Water cooling is performed by supplying cooling water to each steam chamber 27, 28° 32 with each discharge pipe 65, 66° 67 open. Next, with each discharge pipe 65, 66, 67 open, from each steam chamber air supply pipe 56, 59, 62,
Air is supplied to each steam chamber 27, 28, 32, and water is drained by the air, and then the steam chambers are allowed to cool. Note that the above-described cycle of water cooling, drainage, and cooling can be repeated several times as necessary until the surface temperature of the foamed molded product 75 falls to a reference value.

Thereafter, the mold opening process begins, but the locking of the locked member 19 by the locking means 15 is released during this straight bend. In addition, before the actual mold opening, the moving side steam chamber 32
The moving side steam chamber exhaust pipe 67 is closed, and air is sent from the moving side steam chamber air supply pipe 62 only to the moving side steam chamber 32, and the foam molded product 75 is transferred to the fixed side mold structure. Moving side cavity surface separation is performed by pressing against the third side.

Subsequently, the motor 11 is rotated in the opposite direction,
Together with the trolley 6, the movable mold structure 7 starts a mold release operation.

At this time, at the beginning of the mold release operation, that is, until the mold is opened by about 20 mm, for example, the movable side steam chamber exhaust pipe 67 is opened, and the fixed side bottom steam chamber exhaust pipe 65 is closed. Air is delivered from the fixed side bottom steam chamber air supply pipe 56 only to the fixed side bottom steam chamber 27 to separate the foamed molded product 75 from the fixed side cavity surface. Further, in conjunction with the mold release operation of the movable mold structure 7, the eject member 24 described above starts moving forward from the beginning, and the first eject member 24 fixed thereto starts moving forward.
The fixed mold plate 25 also starts moving forward.

Thereafter, for example, in synchronization with the mold opening speed of the movable mold structure 7, the eject member 24 and the first stationary mold plate 25 move forward, and the mold opening/ejecting process progresses. By doing this, the large foam molded product 75 is placed in the fixed mold while being reliably positioned between the movable mold plate 31 and the first fixed mold plate 25 of the movable mold structure 7. The structure 3 can be empty. And the eject member 24
and the first fixed mold plate 25 reach the forward limit position,
Only the movable mold structure 7 further moves to the mold opening limit position, and the foam molded product 75 supported by the first fixed mold plate 25 is positioned in the mold opening space.

After that, the conveyor means 74 is raised to carry the foam molded product 75 (FIG. 4(b)), and then the eject member 24 and the first fixed mold plate 25 are moved back (eject return). ), the foamed molded article 75 is left on the conveyor means 74.

In this state, the conveyor means 74 is rotationally driven in the conveying direction, and the foamed molded product 75 is taken out of the foam molding machine and transferred to a different conveyor means 76, for example, as shown in FIG. By lowering the conveyor means 74,
One cycle of foam molding is completed.

The above-mentioned mold release/ejection operation of the foamed molded product 75 is just one example, and any suitable operation mode may be used depending on the shape of the molded product, the shape of the eject plate for extruding the molded product, etc. Needless to say, it is possible to take

[Effects of the Invention] As described above, according to the present invention, on the fixed side mold structure side,
Supplying pre-expanded particles to the cavity formed when the mold is closed.
A molding material supply for filling and air for the fixed steam chamber in the fixed mold structure as well as the movable steam chamber in the movable mold structure.

Since the steam and cooling water supply piping system and the discharge (drain) piping system for each steam room are centrally arranged,
Direct connection of the piping system to the movable mold structure side can be eliminated,
Therefore, it is possible to provide a foam molding machine that has high reliability in maintaining the piping system and can consolidate the piping system, and has great industrial value.

[Brief explanation of drawings]

1 to 7 relate to one embodiment of the present invention, FIG. 1 is a partially simplified front view of a foam molding machine, FIG. 2 is a partially simplified right side view of a foam molding machine, 3 is an explanatory diagram showing the operation of the locking means, FIG. 4 is an explanatory diagram showing the operation of the mold opening/ejecting operation, FIG. Figure 7 is a simplified explanatory view from the front showing the supply system and discharge system of steam and cooling water. A simplified explanatory diagram seen from a plane showing only the supply system of steam and cooling water, FIG. 8 is an operational explanatory diagram showing the operation of a locking means according to another embodiment of the present invention, and FIG. An explanatory diagram showing how a large block body (lightweight block body for embankment) is used, Figure 1O is a perspective view showing one example of a lightweight block body for embankment, and Figure 11 shows another example of a lightweight block body for embankment. FIG. 3...Fixed side mold structure, 5A, 5B...
...Rail, 6...Dolly, 7...Movable side mold structure, 8A. 8B...Wheel, 9A, 9B...Axle,
lO... Bearing means, 11... Motor,
12...Belt, 13...Pulley, 1
5.15'...Lock means, 16...
・Support, 17.17' ... Lock piece, 18
・・・・・・Electromagnetic actuator, 19.19' ・・・
.... Member to be locked, 2o... Support body, 21
... Air cylinder, 22 ... Fixed die plate, 23 ... Fixed mold frame, 24.
...Eject member, 25...First fixed mold plate, 26...Second fixed mold plate, 27.
...Fixed side bottom steam chamber, 28...Fixed side side steam chamber, 29...Movable die plate, 30
......Movable mold frame, 31...Movable mold plate, 32...Moving side steam chamber, 33...
...Cavity, 34...Molding material supply section, 3
5... Pre-foamed grain storage, 36...
・Main supply duct, 37... Manifold, 38
...Sub supply duct, 39...Suction port, 40...Blower-141...Main air duct, 42...Manifold, 43 ...
... Sub-air duct, 44 ... Nozzle pipe section, 4
5... Vertical pipe section, 46... Raw material receiving pipe section, 47... Check valve means, 48...
... Air cylinder, 49 ... Piston rod, 50 ... Plug, 51 ... Compressed air supply port, 52 ... Compressed air supply source, 53 ...
...Main air duct, 54...Manifold,
55...Sub-air duct, 56...Air supply piping for fixed side bottom steam chamber, 57...Steam supply piping for fixed side bottom steam chamber, 58...・Cooling water supply piping for the fixed side bottom steam chamber, 59... Air supply piping for the fixed side side steam chamber, 60... Steam supply piping for the fixed side side steam chamber, 61... ...Cooling water supply piping for the fixed side side steam chamber, 62...Air supply piping for the moving side steam room, 63...Steam supply piping for the moving side steam room, 64... ... Cooling water supply piping for moving side steam room, 65 ... Discharge piping for fixed side bottom steam room,
66...Fixed side side steam chamber exhaust pipe, 67.
...Discharge piping for the moving side steam room, 68...
On/off control valve, 69...Seal packing,
70... Air supply receiving piping, 71...
Steam supply receiving piping, 72... Cooling water receiving piping,
73... Discharge amount is piping, 74... Conveyor means, 75... Foamed molded product. JI3 diagram Cb) JI5 diagram 94 diagram (σ) (b) me diagram I! Figure 8 <b> Figure 9 Figure 410 @/Figure I

Claims (2)

[Claims] (1) In a foam molding machine in which a movable mold structure having a movable mold comes into contact with and separates from a fixed mold structure having a fixed mold, the mold closing is performed on the fixed mold structure side. a molding material supply unit for supplying and filling the pre-expanded particles into the cavity formed at the time; and air for the fixed steam chamber in the fixed mold structure and the movable steam chamber in the movable mold structure; A foam molding machine characterized in that a steam and cooling water supply piping system and a discharge (drain) piping system for each of the steam chambers are centrally arranged. (2) In claim 1, a supply piping system for air, steam, and cooling water for the movable steam chamber and a discharge piping system for the movable steam chamber disposed on the fixed mold structure side. A foam molding machine characterized in that the system is connected to a corresponding receiving piping system disposed on the movable mold structure through seal packings in the mold closed state.