JP3457564B2 - Method for producing pulp molded article and molding machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding method and a molding machine capable of easily transferring a molding between two molds.

[0002]

2. Description of the Related Art In the production of a molded body, the molded body is molded in a mold in a mold closed state, the mold is then opened, and the molded body is molded using an external handling device. A method is used in which a molded body that is taken out and is taken out is secondarily processed by a separate mold. However, it is not easy to take out a molded product having poor mechanical strength and poor formability from a mold by using an external handling device and subjecting the molded product to secondary processing by a separate mold. Further, if an external handling device is used, there is a risk that the molded product and the die for secondary processing may be misaligned.
Furthermore, in order to insert an external handling device between the split molds that have been opened, it is necessary to increase the mold opening amount, which is one of the causes of increasing the size of the molding machine and lengthening the manufacturing cycle.

Therefore, it is an object of the present invention to provide a molding method and a molding machine capable of easily transferring a molding which is difficult to handle between two molds. Another object of the present invention is to provide a method for manufacturing a molded body and a molding machine in which a molded product and a mold do not shift in position and the molding machine can be further downsized and the manufacturing cycle can be shortened.

[0004]

SUMMARY OF THE INVENTION According to the present invention, after molding a water-containing pulp mold compact in a first mold consisting of a pair of split molds, the compact is molded into one of the split molds by a predetermined means. and mold opening a pair of該割type under the holding state, is moved and one of the split mold of the first mold, and at the same time in the same direction to one of the split mold of the second mold comprising a pair of split molds One of the first mold
Square the該割type, are moved to the second mold other split mold and a position opposed to, closed one該割type first mold and the other mold and該割type of the second mold The molded body is loaded into the inside of the mold, and under the mold closed state, the holding state of the molded body in one of the split molds of the first mold is released, and the molded body is moved to the second mold by a predetermined means. after holding the mold in the other of the split mold, mold opening to pass the molded article from one該割type first mold to the other該割type second mold, the second mold One of the split molds and the other split mold of the second mold are closed, the above-mentioned molded body is loaded into them, and the molded body is subjected to predetermined secondary processing under this mold closed state. A method of manufacturing a pulp mold molded body, wherein the secondary processing is to insert an expandable / contractible hollow core into the molded body loaded in a second mold, and then The present invention provides a method for producing a pulp mold molded body, which comprises: expanding the molded body, and pressing the molded body against the inner surface of the cavity of the second mold by the expanded core to dehydrate the molded body under pressure and heat. Has been achieved.

Further, according to the present invention, as a molding machine preferably used in the above-mentioned manufacturing method, a first mold and a second mold composed of a pair of split molds are provided, and one split mold in each of the molds is The split platen is fixed on the same surface of the slide platen capable of reciprocating in the width direction and the other split molds of both molds are fixed on the same surface of the movable platen. The two split dies fixed to the slide platen and the second split plate fixed to the movable platen are capable of reciprocating in a direction orthogonal to a split surface of the split dies fixed to the slide platen.
The split molds of the molds are respectively provided with means for holding the molded body, and the split molds of the first mold fixed to the slide platen and the second molds fixed to the movable platen are provided by the movement of the slide platen. type have been made to enable mold closing, mold opening split mold and is the opposite and above the reciprocating motion of the, mold closing,
First mold fixed to the slide platen by mold opening
The molded product held in the split mold is fixed on the movable platen.
A molding machine adapted to be delivered to a split mold of a specified second mold .

The present invention also provides, as another molding machine preferably used in the above-mentioned manufacturing method, a first molding consisting of a pair of split molds.
A rotary platen that includes a mold and a second mold, and one split mold in each of the molds has a rotation axis in the height direction of the split mold and that can rotate in the forward and reverse directions about the rotation axis. The split molds are fixed so that their back surfaces face each other, and the other split mold in the first mold and the other split mold in the second mold reciprocate in a direction orthogonal to the direction of the rotation axis of the rotary platen. The movable platens are respectively fixed to movable movable platens, and the movable platens are arranged at positions facing each other with the rotary platen interposed therebetween. The split mold of the first mold fixed to the rotary platen and the split mold Second fixed to movable platen
The split molds of the molds are respectively provided with means for holding the molded body, and by the rotation of the rotary platen, the split molds of the first mold and the second mold fixed to the movable platen are fixed to the rotary platen. The present invention provides a molding machine in which a split mold of a mold is opposed and the mold can be closed and opened by the reciprocating motion.

In the present invention, the term "secondary processing" is to be interpreted in its broadest sense with respect to subjecting a molded body to some processing. Examples of secondary processing include pressurizing and heating dehydration of a molded body in the production of a pulp mold molded body described later, filling of contents and coating of the inner wall of the molded body in the production of a plastic blow molded body.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described based on its preferred embodiments with reference to the drawings. 1 to 6
FIG. 1 shows a schematic view of a method for manufacturing a pulp mold molded body as a first embodiment of the present invention and a preferable molding machine used therefor as seen from above.

As shown in FIGS. 1 to 6, the molding machine 1 used in the manufacturing method of the present embodiment comprises a first mold 10 composed of a pair of split molds A and B and a pair of split molds C and D. The second mold 20 is provided. The first mold 10 is configured such that a cavity having a shape corresponding to the outer shape of the molded body to be molded is formed by bringing the split surfaces of the split molds A and B into contact with each other and closing the mold. The same applies to the second mold 20, and a cavity having the same shape as the above-mentioned cavity is formed by closing the split molds C and D. The split molds C and D of the second mold 20 are provided with heating means such as a heater so that they can be heated to a predetermined temperature. The concave shape on the inner surface of the split mold A and the concave shape on the inner surface of the split mold C are the same, and the concave shape on the inner surface of the split mold B and the concave shape on the inner surface of the split mold D are also the same. In a state where the split dies A and B of the first die 10 and the split dies C and D of the second die 20 are closed, the mouth portion 1 leading to the cavity is provided above the respective dies 10 and 20.
1, 21 are formed.

FIG. 1 (b) shows a schematic view of the split mold A in the first mold 10 as seen from its dividing surface. The split mold A is provided with a plurality of communication holes 12 that communicate with the cavity from the outer surface thereof. Each communication hole is connected to a suction means (not shown). Although not shown in the drawings, similar communication holes are provided in the split mold B of the first mold and the split molds C and D of the second mold 20, and the communication holes are connected to the suction means. The inner surfaces of the split molds A and B are each covered with a net (not shown) having a mesh of a predetermined size. In the molding machine 1 of the present embodiment, the split molds A to D include a molded body holding means that also functions as a dehydrating means for the molded body. This holding means is composed of a communication hole and a suction means.

One of the mold halves A and C of both molds 10 and 20 is fixed on the same surface of the slide platen 30. The split molds A and C are fixed to the slide platen 30 at their back sides so that their height direction is parallel to the height direction of the slide platen 30. The slide platen 30 has a surface opposite to the fixed surfaces of the split molds A and C slidably fixed to the inner surface of the first side plate 31 through a sliding means such as a bearing, and thus the split mold A , C
It is made possible to reciprocate in the width direction.

The other split molds B and D in the two molds 10 and 20 are two movable platens 32 and 33, respectively.
Are separately fixed on the same side of the. The split molds B and D have their back surfaces fixed to the movable platens 32 and 33, respectively. The interval between the split molds B and D is the same as the interval between the split molds A and C fixed to the slide platen 30. Thus, the split surface of split mold A and the split surface of split mold B face each other, and the split surface of split mold C and the split surface of split mold D also face each other. Each movable platen 32,
33 is supported by a pair of tie bars 34 and 35, respectively. Both ends of each of the tie bars 34 and 35 have the above-mentioned first side plate 31 and the side plate 31.
It is fixed to a second side plate 38 which is erected so as to face.

Hydraulic cylinders 36 and 37 are attached to the outer surface of the second side plate 38. The tip ends of the piston rods 36 'and 37' of the hydraulic cylinders 36 and 37 are fixed to the surfaces of the movable platens 32 and 33 opposite to the fixed surfaces of the split dies B and D, respectively. When the hydraulic cylinders 36 and 37 operate, the movable platen 3
2, 33 move along the tie bars 34, 35, whereby the split molds B, D are allowed to reciprocate in the direction orthogonal to the split surfaces of the split molds A, C fixed to the slide platen 30. There is. By the molding machine 1 having such a configuration, the split molds A and B of the first mold 10 can be closed and opened. Similarly, the split molds C and D of the second mold 20 are closed.
The mold can be opened.

In the molding machine 1 of this embodiment,
By the movement of the slide platen 30, the split mold A of the first mold 10 fixed to the slide platen 30 and the split mold D of the second mold fixed to the movable platen face each other, and the mold can be closed and opened. It is done by this, from the first mold to the second
It is possible to transfer the molded body to the mold while holding the molded body in the split mold.

A method of producing a pulp mold molded body using the molding machine 1 thus constructed will be described together with the operation of the molding machine 1. First, as shown in FIG. 1A, the slide platen 30 is moved to a position shown in FIG. Next, the hydraulic cylinders 36 and 37 are operated to push out the split dies B and D, and the split dies B and A are closed, and the split dies D and C are closed. At the start of operation, nothing is loaded inside the first and second molds 10 and 20. During operation, the first mold 1
Nothing is loaded inside 0, but inside the second mold 20, a molded body 39 molded in the first mold 10 and having a high water content is loaded. For the sake of convenience, the following description will be given while the molding machine 1 is in operation.

Next, a pulp slurry supply pipe (not shown)
Is lowered from above the first die 10 and the tip thereof is set to the mouth portion 1
Connect to 1. Under this condition, the injection pump (not shown) is operated to inject the pulp slurry into the cavity of the first mold 10 from the pulp slurry supply source (not shown). Simultaneously with the injection of pulp slurry, the split molds A and B are sucked from the outside through the communication holes of the split molds A and B to reduce the pressure in the cavity. This sucks water in the pulp slurry and deposits pulp fibers on the inner surface of the cavity. When a predetermined amount of pulp slurry is injected into the cavity, the injection of pulp slurry is stopped and the inside of the cavity is sucked and dehydrated. As a result, pulp fibers are deposited on the inner surface of the cavity of the first mold 10 to form a water-containing molded body. Since the molded body molded in this manner has a high water content, the first mold 10 is opened and taken out from the cavity by using an external handling device, and the next process (secondary processing process) is performed. Migrating is very difficult.
However, as will be described later, in the present invention, the first mold 1
Since the molded body can be transferred from 0 to the second mold 20 while the molded body is held in the split mold, the secondary processing of such a molded body having poor handleability can be easily performed. it can.

While the molded body is molded by the first mold 10, the molded body 39 loaded in the second mold 20 is subjected to secondary processing. The secondary processing in this embodiment is pressure heating dehydration of the molded body. In order to carry out this pressure heating dehydration, first, while the split molds C and D are heated to a predetermined temperature, a core (not shown) which is elastic, expandable and contractible, and hollow is It is lowered from above the die 20 and inserted into the cavity of the second die 20 through the mouth portion 21. The core is inflated like a balloon in the cavity of the second mold 20 to press the water-containing molded body 39 against the inner surface of the cavity, thereby imparting the inner surface shape of the cavity and pressing the molded body. Used to dehydrate. The core is made of urethane, fluorine-based rubber, silicone-based rubber or elastomer having excellent tensile strength, impact resilience and elasticity.

Next, a pressurized fluid is supplied from a supply source (not shown) of the pressurized fluid into the core to expand the core. The shape of the expanded core is similar to the shape of the cavity of the second mold 20. The molded body 39 loaded in the second mold 20 is pressed against the inner surface of the cavity by the expanded core, the inner surface shape of the cavity is transferred to the molded body 39, and the pressurized heating dehydration proceeds. By performing this secondary processing step (pressure dehydration step), the molded body 39 is pressed against the inner surface of the cavity of the second mold 20, so that the shape of the inner surface of the cavity is complicated. However, the shape of the inner surface of the cavity is accurately transferred to the molded body 39. Moreover, unlike the conventional manufacturing method, there is no need to use a bonding step, and thus the obtained molded body does not have joints and thick portions due to bonding. As a result, the strength of the obtained molded product is increased and the appearance impression is improved. By the above-mentioned operation, the secondary processed compact is obtained. As the pressurized fluid used to expand the core, for example, compressed air (heating air), oil (heating oil), and various other liquids are used. The pressure for supplying the pressurized fluid is 0.
It is preferably set to 01 to 5 MPa, particularly 0.1 to 3 MPa.

When the molded body is molded in the first mold 10 and the pressurized heat dehydration of the molded body is completed in the second mold 20, the pulp slurry supply pipe (not shown) is raised to raise the first mold 10. Away from. Along with this, the second mold 2
At 0, the pressurized fluid in the core is removed, the core is contracted, and the core is further raised to move the cavity 2 of the second mold 20.
Take out from inside 3.

Next, only the split mold A in the first mold 10 is suctioned to hold the molded body in the split mold A. Along with this, only the split mold C in the second mold 20 is sucked,
The molding obtained by dehydration under pressure is held in the split mold C. Under this condition, the hydraulic cylinders 36 and 37 are operated to pull back the split molds B and D as shown in FIG. 2, the split mold B and the split mold A are opened, and the split mold D and the split mold C are opened. Open the mold.
As a result, as shown in the same figure, the vertical half of the molded body 39 molded by the first mold 10 is held in the split mold A. Further, the vertical half of the molded body 40 obtained by being heated and dehydrated under pressure by the second mold 20 is also held in the split mold C.

With the molded bodies 39 and 40 held in the split molds A and C, the slide platen 30 is moved in the direction indicated by the arrow in FIG. Move to the position before moving. As a result, the split surface of the split die A and the split surface of the split die D of the second mold 20 face each other. As a result of the movement of the slide platen 30, the split mold C holding the molded body 40 obtained by being heated and dehydrated under pressure moves to the line of the next step (for example, the product discharging step) as shown in the figure.

With the split die A of the first die 10 and the split die D of the second die 20 facing each other, as shown in FIG. 4, the hydraulic cylinder 37 is operated to push out the split die D. The split mold D and the split mold A are closed and the molded body 39 is loaded inside them. Under this mold closed state, suction in the split mold A is stopped and the holding state of the molded body 39 is released. At the same time, the split mold D is sucked to hold the molded body 39 in the split mold D. During this operation, the product take-out arm 41 having suction means is brought close to the molded body 40 held in the split mold C moved to the next process line.

Next, the hydraulic cylinder 37 is operated to pull back the split mold D, and the split mold A and the split mold D in the mold closed state are opened. As described above, the molded body 39 is no longer held by the split mold A, but is held by the split mold D, so that the molded body 39 moves to the split mold D side when the mold is opened. In this way, the transfer of the molded body 39 from the split mold A to the split mold D is completed. During this operation, the suction part of the product take-out arm 41 is
The molded body 40 held in the split mold C is brought into contact with the molded body 40,
Hold by adsorption. At the same time, suction in the split mold C is stopped and the holding state of the molded body 40 is released. Next, the product takeout arm 41 is separated from the split mold C, and the molded body 40 is taken out of the split mold C and discharged to the next step.

After completion of the above delivery, as shown in FIG. 6, the slide platen 30 is returned to the state before the movement, and the split mold A in which the holding state of the molded body 39 is released is returned to the position before the movement. Face split mold B. Along with this, the molded body 40
The split mold C that has been taken out is returned to the position before the movement, and is opposed to the split mold D that holds the molded body 39. Next, the hydraulic cylinders 36 and 37 are operated to push out the split dies B and D, and the split dies B and A are closed. At the same time, the split mold D and the split mold C are closed, the molded body 39 is loaded inside them, and the state shown in FIG. 1 is restored. After that, the above-described operation is repeated.

According to the above embodiment, no mechanical deformation force is applied to the molded body, and unnecessary deformation does not occur. Further, there is no risk of misalignment between the molded product and the mold, which is likely to occur when an external handling device is used.
Further, compared with the case where an external handling device is used, the mold opening amount can be reduced, the molding machine can be downsized, and the number of steps can be reduced to shorten the manufacturing cycle.

Next, second and third embodiments of the present invention will be described with reference to FIGS. 7 and 8. Regarding the second and third embodiments, only the points that differ from the first embodiment will be described, and for points that are not particularly described, the detailed description of the first embodiment will be applied as appropriate. Further, in FIGS. 7 and 8, the same members as those in FIGS. 1 to 6 are denoted by the same reference numerals.

The molding machine 1 of the second embodiment shown in FIGS. 7A and 7B is a tandem molding machine. Figure 7 (a)
Corresponds to the state shown in FIG. 1 in the first embodiment, and FIG. 7B corresponds to the state shown in FIG. Also, FIG. 7 (b)
The state indicated by the dotted line in (1) corresponds to the state shown in FIG.
The molding machine 1 of the present embodiment includes a first mold 10 and a second mold 20.
2 pairs are provided respectively, and two molded bodies can be molded and secondary processed in one cycle. Also in the molding machine 1 of the present embodiment, the slide platen 3
By moving 0, 30 ', the slide platen 30,
The split mold A of the first mold 10 fixed to 30 'and the split mold D of the second mold fixed to the movable platens 33 and 33' face each other and are movable with respect to the slide platens 30 and 30 '. The molds can be closed and opened by reciprocating the platens 33, 33 ', which allows the molded product to be delivered from the first mold to the second mold in a split mold. Can be done under conditions.

As in the first embodiment, the split mold A of the first mold 10 and the split mold C of the second mold 20 are fixed to the slide platen, respectively. However, in this embodiment, two slide platens 30, 30 'are used,
One split mold A and one split mold C on one slide platen 30
, And the other split mold A and split mold C are fixed to the other slide platen 30 '. Further, the two split molds A are arranged on the slide platens 30, 3 so that their rear surfaces face each other.
It is fixed at 0 '. The same applies to the two split molds C. The slide platens 30 and 30 'are slidably fixed to the movable plate 42 through sliding means such as bearings so that they can reciprocate in the width direction of the split molds A and C.

Split molds B, B of the first mold 10 are fixed to movable platens 32, 32 ', respectively. Similarly second
The split molds D, D of the mold 20 are fixed to the movable platens 33, 33 ', respectively. One end of the movable platen 32, 33 has a second end on the surface opposite to the fixed surface of the split molds B, D.
Link mechanism 4 fixed to the side plates 38, 38
The other ends of 3, 44 are fixed. Both link mechanisms 43,
The fulcrums of 44 are fixed to the support member 44a. The movable platen 32 and the fixed plate 42 are supported by a pair of tie bars 34. Similarly, the movable platen 33 is supported by a tie bar 35.
The fixed plate 42 is also supported by the tie bar 35. Both ends of each tie bar 34, 35 have a movable platen 3
It is fixed to 2 ', 33' and the second side plates 38, 38. Thereby, the movable platens 32, 3
2 ', 33, 33' are reciprocally movable along the tie bars 34, 35. The fixed plate 42 and the support members 44a of the link mechanisms 43 and 44 are in a fixed state.

The mold closing and mold opening operations in the molding machine 1 of this embodiment will be described. The link mechanisms 43 and 44 in a contracted state are expanded by a predetermined means and fixed to the movable platens 32 and 33. The molds B and D approach the split molds A and C fixed to the slide platen 30, and finally the molds are closed. At the same time, the movable platens 32 'and 33' that operate in conjunction with the operation of the link mechanisms 43 and 44 move in the direction of the slide platen 30 ', and the split molds B and D fixed to these platens are moved to the slide platen 30. '
The split molds A and C fixed to are approached, and finally the mold is closed. The second scan which in conjunction with the expansion and contraction of the link mechanism 43, 44 is one end of the link mechanism 43 and 44 are fixed
The ride plates 38, 38 also move. The mold opening operation is the opposite.

FIG. 8 shows the molding machine 1 of the third embodiment, and is a view corresponding to FIG. 2 in the first embodiment. In the molding machine 1 of the present embodiment, the first mold 10
The split mold A and the split mold C of the second mold 20 are fixed to the rotary platen so that the back surfaces of both split molds face each other. Specifically, the split mold A is fixed to the rotary platen 45, and the split mold C is fixed to the rotary platen 45 ′. The surfaces of the rotary platens 45 and 45 'opposite to the split mold fixing surface are fixed to the facing surfaces of the prismatic rotating body 46, respectively. The rotating body 46 has a rotating shaft 47 in the height direction of the split molds A and C, and is erected on a base plate 48 so as to be rotatable in the forward and reverse directions around the rotating shaft 47.

The split mold B of the first mold 10 is a movable platen 3.
It is fixed to 3 ', and the split mold D of the second mold 20 is fixed to the movable platen 33. Each movable platen 33, 3
3'is arranged at a position facing each other by 180 ° with the rotary body 46 to which the rotary platens 45, 45 'are fixed sandwiching. As a result, the split mold A and the split mold B face each other, and the split mold C and the split mold D face each other, so that the mold can be closed and opened.
The other end of the link mechanism 44, whose one end is fixed to the second side plate 38, is fixed to the surface of the movable platen 33 opposite to the fixed surface of the split mold D. Movable platen 33
The base plate 48 is supported by the pair of tie bars 34. Both ends of each tie bar 34 are fixed to the movable platen 33 ′ and the second side plate 38. Further, the base plate 48 and the support member 44a of the link mechanism 44 are in a fixed state. As a result, the split molds D and B fixed to the movable platens 33 and 33 'can reciprocate along the tie bars 34 in the direction orthogonal to the direction of the rotation axis. In the present embodiment, unlike the first embodiment, the second mold 20 is opened while the molded body 40 that has been secondarily processed in the second mold 20 is held by the split mold D. Be seen.

[0033] In the molding machine 1 of this embodiment, all of the split mold A~D as in the first and second embodiment is provided with a holding means.

In the molding machine 1 of this embodiment, the rotary platen 4 is used to transfer the molded product from the first mold to the second mold.
It is performed by rotating 5,45 '. That is, the rotating body 46 that fixes the rotating platen 45 is changed from the state shown in FIG.
By rotating 0 degrees, the split mold A fixed to the rotary platen 45 faces the split mold D fixed to the movable platen 33. Next, the link mechanism 44 operates, the split mold D fixed to the movable platen 33 approaches the split mold A, and finally the mold is closed (at the same time, the split mold B fixed to the movable platen 33 ′ is closed. Will be closed with the split mold C). Then, the molded body 39 is transferred from the split mold A to the split mold D under the mold closed state. The secondary-processed compact 40 held by the split mold D is discharged to the next step by a predetermined means while the rotary platen 45 is rotating.

The mold closing in the molding machine 1 of the present embodiment
The mold opening operation is similar to that of the molding machine according to the second embodiment.

The present invention is not limited to the above embodiment . An example
For example , in each of the above-mentioned molding machines , for example, a plastic molded body can be a molding target. In this case, a molten resin parison is inserted into the cavity of the first mold 10 and air is blown into the parison to form a blow molded body .

Further, in the first embodiment, the split molds B and D are fixed to the fixed platen instead of being fixed to the movable platen, and the slide platen 30 is reciprocated relative to the fixed platen. The mold closing / mold opening operation may be performed.

The discharge of the secondary processed compact 40 to the next step is not limited to the case of the above-mentioned embodiment, and after the secondary mold 20 is subjected to the secondary process, the compact 40 is formed by a predetermined means. In the state in which 40 is held in one of the split molds C and D of the second mold 20, the split molds C and D are opened, and from this mold opening until the split molds C and D are closed next. You can go between them.

Further, in the present invention, after the secondary processing step in the second mold, one or more processing steps are further performed using one or more molds, and the transfer of the molded product between the respective steps is performed as described above. You can go.

In the first and second embodiments, the movable platens 32, 33 (32 ', 33') are separate bodies, but instead of this, an integral movable platen may be used.

[0041]

Industrial Applicability According to the present invention, there is provided a molding method and a molding machine capable of subjecting a molded body to secondary processing while maintaining the state during molding. Therefore, the molded body produced according to the present invention is not subjected to mechanical deformation force,
No unnecessary deformation has occurred. In addition, there is no risk of misalignment between the molded product and the mold, which is likely to occur when an external handling device is used. Further, compared with the case where an external handling device is used, the mold opening amount can be reduced, the molding machine can be downsized, and the number of steps can be reduced to shorten the manufacturing cycle.

[Brief description of drawings]

FIG. 1 is a schematic view of a preferable molding machine used in the method for producing a pulp mold molded body according to the first embodiment of the present invention, as seen from the upper surface.

FIG. 2 is a schematic view showing a state where the first and second molds of the molding machine shown in FIG. 1 are opened.

FIG. 3 is a schematic diagram showing a state where a split die A of the first die of the molding machine shown in FIG. 1 faces a split die D of the second die.

FIG. 4 is a schematic diagram showing a state where a split mold A of a first mold and a split mold D of a second mold of the molding machine shown in FIG. 1 are closed.

5 is a split mold A of the first mold of the molding machine shown in FIG.
It is a schematic diagram which shows the state which the molded object was handed over to the split mold D of a 2nd metal mold.

FIG. 6 is a schematic view showing a state before the first and second molds of the molding machine shown in FIG. 1 are closed.

FIG. 7 is a schematic view of a molding machine according to a second embodiment of the present invention seen from above, and FIG. 7A is a schematic view of the first embodiment.
7B, and FIG. 7B corresponds to FIG.

FIG. 8 is a schematic view (corresponding to FIG. 2) of the molding machine according to the third embodiment of the present invention as viewed from above.

[Explanation of symbols]

1 molding machine 10 First mold 20 Second mold 39 molded body 40 Molded product A, B, C, D split type

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 7-16945 (JP, A) US Patent 2961043 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) D21J 1 / 00-7/00 B29C 33/00-33/76 B29C 49/00-53/84

Claims (6)

(57) [Claims] 1. A method of molding a water-containing pulp molded body in a first mold comprising a pair of split molds, and then holding the molded body in one of the split molds by a predetermined means. The split mold is opened, and the split mold of one of the first molds and a second split mold composed of a pair of split molds are opened.
Move one of the mold halves at the same time in the same direction to
One of該割type 1 die, the second is moved to the other split mold position opposite to the mold, the other該割type one該割type and a second mold of the first mold The mold is closed and the above-mentioned molded body is loaded into them, and under this mold-closed state, the holding state of the molded body in one of the split molds of the first mold is released and the molded body is subjected to a predetermined means. by after held in the second mold in the other of the split mold, mold opening to pass the molded article from one該割type first mold to the other該割type second mold, One of the split molds of the second mold and the other split mold of the second mold are closed, and the above-mentioned molded body is loaded inside them, and under the mold closed state, a predetermined two A method for producing a pulp mold molded body which is subjected to the following processing, wherein the secondary processing is a core that is expandable and contractible and hollow,
It is inserted into the molded body loaded in the second mold, then the core is expanded, and the expanded core presses the molded body against the inner surface of the cavity of the second mold to press the molded body. A method for producing a pulp mold molded body, which comprises heating and dehydrating. 2. One of the second molds after the split mold of one of the first molds and the split mold of one of the second molds whose holding state has been released are simultaneously returned to the position before movement. with the split mold and in closed other types a pair of the split mold of the first mold with the split mold and the mold closes the second die, subjected to the secondary processing in the second mold The method for producing a pulp mold molded body according to claim 1, wherein the molded body is molded in a first mold. 3. The pair of the second molds is held under a state in which the molded body is held in any one of the second molds by a predetermined means after the molded body is subjected to the secondary processing. The split mold is opened, and the holding state of the molded product is released during any of the period from this mold opening until the pair of split molds of the second mold is closed. The method for producing a pulp mold molded body according to claim 1 or 2, wherein the pulp molded body is discharged. 4. A slide platen comprising a first mold and a second mold composed of a pair of split molds, one split mold of each of the molds being the same slide platen capable of reciprocating movement in the width direction of the split molds. And the other split molds of both molds are fixed on the same surface of the movable platen, and the movable platen is orthogonal to the split surface of the split mold fixed to the slide platen. The two split molds fixed to the slide platen and the split molds of the second mold fixed to the movable platen are respectively provided with means for holding a molded body, By the movement of the slide platen, the split mold of the first mold fixed to the slide platen and the split mold of the second mold fixed to the movable platen face each other, and the mold is closed / opened by the reciprocating motion. Possible It made that are, mold closed-type Open
Of the first mold fixed to the slide platen by
The molded body held in the mold is fixed to the movable platen.
The molding machine is designed to be delivered to the split mold of the second mold. 5. A device fixed to the slide platen.
Two split molds and a second mold fixed to the movable platen.
The split molds are each equipped with holding means by suction of the molded body.
The molding machine according to claim 4. 6. A first mold and a second mold composed of a pair of split molds, one split mold of each of the molds having a rotation axis in a height direction of the split mold, and the rotation. A back plate of both split molds is fixed to a rotary platen capable of rotating in the forward and reverse directions about an axis, and the other split mold of the first mold and the other split mold of the second mold are Each of the movable platens is fixed to a separate movable platen capable of reciprocating motion in a direction orthogonal to the direction of the rotation axis of the rotary platen, and the movable platens are arranged at opposite positions with the rotary platen interposed therebetween. The split mold of the first mold fixed to the mold and the split mold of the second mold fixed to the movable platen are respectively provided with means for holding a molded body, and the rotary platen is rotated to rotate the rotary platen. Fixed mold of the first mold and the above Molding machine and the second mold split mold which is fixed to the platen has been made possible mold closing, mold opening by facing and the reciprocating motion.