JP4726356B2 - Molded mold - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drying mold for drying a wet molded body molded by a pulp mold method, a drying method for the molded body using the same, and a set of drying molds.
[0002]
[Prior art and problems to be solved by the invention]
When drying a molded body in a wet state formed by the pulp mold method, usually, a housing portion of the molded body having an exhaust hole communicating with the outside, and a butting portion extending outside the peripheral edge portion of the housing portion In addition, a drying mold of a pulp mold molded body provided with a heating means for heating the housing portion is used. The container is heated by the heating means in a state where the molded body is pressed against the container, the molded body is heated by heat conduction through the container, and the moisture in the molded body is evaporated to form the exhaust hole. More steam is discharged outside to dry. As a conventional technique related to such a dry mold, for example, there is an apparatus for producing a paper-molded product described in JP-A-6-158599.
[0003]
By the way, when hundreds to thousands of molded bodies are continuously dried using the above-described drying mold, droplets containing a precipitation component contained in the slurry used at the time of making the molded body are generated from the inside. When pressed, the dies are squeezed out and dried in a heated mold to become a solid, gradually staying in the vicinity of the peripheral edge of the container and the inner edge of the butting surface, and if this is left to continue and repeatedly dry, The deposited component is burnt, and the burned deposited component adheres to the outer surface of the molded body in a wet state that is subsequently subjected to drying, and the ratio of sticking to the surface of the molded body after drying becomes high. there were. In order to reduce the ratio of such defective products, the drying mold must be frequently cleaned, and production efficiency has to be lowered.
[0004]
Accordingly, an object of the present invention is to reduce the generation of defective products even when drying is repeated, and to provide a molded product drying mold that can efficiently produce a molded product, a method for drying a molded product using the molded product, And providing a set of dry molds.
[0005]
[Means for Solving the Problems]
The present invention, in a dry mold of a molded body comprising a housing portion of a molded body in a wet state molded by a pulp mold method, and a butting surface extending outside the peripheral edge of the housing portion,
A hole or an aggregate groove is formed on the abutting surface, and a communication groove communicating with the hole or the aggregate groove and the accommodating portion is formed, and the hole or the aggregate groove is formed inside the dry mold. The object is achieved by providing a dry mold for a molded body, characterized in that a flow passage for suction and discharge communicating with the outside is formed.
[0006]
Further, the present invention is a method of drying a molded body using the drying mold of the molded body of the present invention,
After accommodating the molded body in a wet state in the housing portion, the housing portion is heated while sucking negative pressure through the flow passage to dry the molded body, and steam emitted from the molded body is passed through the flow passage. The object is achieved by providing a method for drying the discharged molded product.
[0007]
In addition, the present invention is provided with an accommodating portion of a wet molded body molded by a pulp mold method, and an abutting surface extending outside the peripheral edge of the accommodating portion, and each of the butting surfaces is abutted against each other In a set of dry molds used
A hole or a collecting groove is formed in the abutting surface in one of the drying molds, and a flow passage is formed in the drying mold so as to communicate with the hole or the collecting groove and the outside.
A communication groove communicating with the hole or the aggregation groove and the accommodating portion is formed on the butting surface of any of the dry molds,
A set of drying molds, wherein a suction discharge path is formed in which the communication groove, the hole or the aggregation groove, and the flow passage are communicated with each other when the abutting surfaces are abutted with each other. By providing the above, the above object is achieved.
[0008]
Further, the present invention is a dry body of a molded body used in the set of drying molds according to the present invention, wherein a storage portion of a molded body in a wet state formed by a pulp mold method, and a peripheral portion of the storage portion And a butting surface extending outside,
The object is achieved by providing a dry mold for a molded body in which a hole or a collective groove is formed on the abutting surface and a flow passage communicating with the hole or the collective groove and the outside is formed inside the dry mold. Is achieved.
[0009]
Further, the present invention is a dry body of a molded body used in the set of drying molds according to the present invention, wherein a storage portion of a molded body in a wet state formed by a pulp mold method, and a peripheral portion of the storage portion And a butting surface extending outside,
The object is achieved by providing a dry mold of a molded body in which a communication groove that communicates with the housing portion and the hole or the aggregation groove in the corresponding other dry mold is formed on the abutting surface. It is.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on preferred embodiments with reference to the drawings.
[0011]
1 and 2 show a first embodiment of a dry mold (hereinafter also simply referred to as a dry mold) of a molded article of the present invention. In the figure, reference numeral 1 denotes a dry type.
[0012]
The drying mold 1 of the present embodiment includes a housing portion 2 of a wet molded body molded by a pulp mold method (wet papermaking method), and a butting surface 3 extending outside the peripheral edge of the housing portion 2. It is a drying mold for a bottle-shaped molded body having a closed neck.
[0013]
The drying mold 1 according to the present embodiment includes a rectangular parallelepiped metal block 10 having the housing portion 2 and the butting surface 3, and a metal back plate 11 fixed to the back surface of the block 10. In addition, a longitudinal groove 100 that forms a ventilation path 6 and an exhaust path 21 to be described later is formed on the back surface of the block 10.
[0014]
In the accommodating portion 2, longitudinally extending exhaust slits 20 are formed at predetermined intervals, and each slit 20 communicates with an exhaust passage 21 that communicates with the outside.
As shown in FIG. 2, the cross section of the slit 20 is formed so as to gradually expand toward the back plate 11 from the viewpoint of suppressing clogging of pulp fibers through the slit 20 and facilitating maintenance.
[0015]
The shape (width and length) of the slit 20 and the opening area ratio of the slit 20 in the housing part 2 are in terms of the balance between easy escape of steam and thermal conductivity, ease of maintenance, and securing the strength of the housing part. Can be determined as appropriate.
[0016]
The exhaust passage 21 is formed by the longitudinal groove 100 and the back plate 11 of the block 10. The exhaust passage 21 is connected to a pipe line (not shown) leading to a negative pressure source (not shown) so that steam emitted from the molded body being dried can be sucked and exhausted to the outside through the slit 20 and the exhaust passage 21. It has become.
[0017]
On the butting surface 3, a collecting groove 4 is formed so as to surround the housing portion 2, and a communication groove 5 communicating with the collecting groove 4 and the housing portion 2 is formed. Also, a flow path 6 for suction and discharge that communicates with the collecting groove 4 and the outside is formed inside the drying mold 1. The flow path 6 is connected to a conduit (not shown) that leads to a negative pressure source (not shown). And when it matches with a corresponding dry type | mold, the vapor | steam emitted from a molded object during drying can be sucked and exhausted outside through the discharge path 7 formed by the communication groove 5, the aggregation groove 4, and the flow path 6. Yes. In addition, since the suction force acts on the abutting surface during drying as described above, the retention of the droplets containing the precipitation component can be suppressed at the peripheral edge of the storage portion 2 and the inner edges of the abutting surfaces 3 and 3 ′. Yes.
[0018]
The distance L (see FIG. 3) from the peripheral edge of the housing portion 2 to the inner edge of the collecting groove 4 is a balance between the strength of the outer edge of the housing portion and the area where scorch adheres, and the delivery from the papermaking mold. From the point of making it more reliable, it is preferable that it is 1.0-20 mm, and it is more preferable that it is 2-10 mm. Further, the width W (see FIG. 3A) of the aggregation groove 4 is preferably 5 to 30 mm, and preferably 10 to 20 mm, from the viewpoint of ensuring the amount of burnt accumulation and the strength of the butted surface. It is more preferable. Further, the depth D (see FIG. 3 (a)) of the aggregation groove 4 is preferably 1 to 10 mm from the viewpoint of securing the amount of burnt accumulation and increasing the amount of heat, and is 2 to 5 mm. More preferably.
[0019]
The width w of the communication groove 5 (see FIG. 3B) is 0. from the viewpoint of leaving no groove marks on the resulting molded body and maintaining the drying efficiency and the discharge efficiency of the droplets. It is preferable that it is 05-5 mm, and it is more preferable that it is 0.1-0.5 mm. In addition, the depth d (see FIG. 3B) of the communication groove 5 is preferably 0.02 to 20 mm in view of the balance between the discharge efficiency of the droplets and the prevention of heat quantity. More preferably, the thickness is 0.05 to 10 mm.
The communication groove 5 is preferably formed with grooves 50 and 51 having appropriate widths depending on the formation location, as in the drying mold 1 of the present embodiment, from the viewpoint of efficient discharge of the precipitate. From the viewpoint of processing efficiency, grooves having the same width can be formed.
[0020]
The flow path 6 for suction and exhaust is formed of a flow path 60 extending in the thickness direction inside the block 10 and a flow path 61 formed by the longitudinal groove 100 and the back plate 11 of the block 10. The flow passage 60 is formed so as to gradually increase in diameter toward the back plate 11 from the viewpoint of suppressing clogging of the precipitated components and facilitating maintenance.
[0021]
The back plate 11 is formed with three through holes 110 along the longitudinal direction thereof, and a predetermined heating means, for example, a heating element (not shown) such as an electric heater can be inserted into the through hole 110. It has been.
[0022]
Next, a set of drying molds according to the present invention will be described as a preferred embodiment based on the embodiment using the drying mold 1 with reference to FIG. In FIG. 4, the symbol S indicates a set of dry molds. A drying mold (the other drying mold) 1 ′ used in the present embodiment that is paired with the drying mold (one drying mold) 1 includes the aggregation groove 4, the communication groove 5, and the flow path 6. Since it is a dry type | mold which has the structure similar to the dry type | mold 1 except for it, the same code | symbol is attached | subjected about the part which is common in the dry type | mold 1, and the description is abbreviate | omitted. Therefore, the description of the above embodiment is appropriately applied to portions that are not particularly described.
[0023]
As shown in FIG. 4, the set of drying molds S of the present embodiment includes the communication grooves 5, the aggregation grooves 4, and the abutting grooves 3, 3 ′ when the butting surfaces 3, 3 ′ of the drying dies 1, 1 ′ are butted together. A suction / discharge path 7 in which the flow path 6 is communicated is formed.
[0024]
In a set of drying molds S of the present embodiment, the heat from the heating means is efficiently transmitted to the wet molded body through the inner surface of the housing portion 2 and the drying proceeds. During this time, the moisture contained in the molded body is discharged as vapor through the slits 20, the exhaust passage 21, and the suction and discharge passages 7, the collecting grooves 4 and the flow passages 6. In addition, a suction force acts on the peripheral edge of the container 2 and the inner edges of the butting surfaces 3 and 3 ′ through the circulation groove 5 and the aggregation groove 4, so that liquid droplets containing a precipitation component may stay. Absent.
[0025]
Further, when the molded body is dried in the pair of drying molds S of the present embodiment, the flow grooves 5, the aggregation grooves 4 and the flow paths 6 forming the suction / discharge paths 7 are formed only in the drying mold 1. Therefore, when the molded product to be dried is transferred to and from the papermaking mold (not shown), the drying mold 1 is placed at a fixed position, and the drying mold 1 ′ is movable, and the drying mold 1 The wet molded body is sucked under a negative pressure through the slit 20 and the exhaust passage 21, received from the papermaking mold, and then dried as it is with the drying mold 1.
[0026]
Next, the drying method of the present invention will be described as a preferred embodiment based on the embodiment using the drying molds 1 and 1 ′ (see FIG. 4) with reference to FIG. In FIG. 5, for the sake of simplicity, the structure and shape of the drying dies 1, 1 ′ are simplified.
[0027]
First, as shown to Fig.5 (a), predetermined | prescribed pulp mold is carried out in the cavity formed by the accommodating parts 2 and 2 by mutually abutting butting surfaces 3 and 3 'of drying type | molds 1 and 1'. The wet compact 8 molded by the molding method is accommodated. When the molded body 8 is accommodated, the drying mold 1 is placed at a fixed position, the drying mold 1 ′ is movable, and the wet molded body is negatively pressured through the slit 20 and the exhaust passage 21 of the drying mold 1 ′. It is preferable to suck it and receive it from a papermaking mold (not shown) and store it as it is with the drying mold 1.
[0028]
And the accommodating part 2 is heated to predetermined temperature with the said heat generating body distribute | arranged to the said back board 11, attracting | sucking a negative pressure inside the cavity through the said flow path 61 (refer FIG. 4) of the said flow path 6. FIG. The suction through the flow passage 61 is preferably −5 to −95 kPa, and more preferably −20 to −80 kPa, from the viewpoint of drying efficiency. In this way, drying is performed while suctioning the inside of the cavity under negative pressure, so that the moisture contained in the molded body is vapor, and the flow groove 5 that forms the slit 20, the exhaust path 21, and the suction / discharge path 7, is consolidated. It is discharged to the outside through the groove 4 and the flow passage 6. In addition, a suction force acts on the peripheral edge of the container 2 and the inner edges of the butting surfaces 3 and 3 ′ through the circulation groove 5 and the aggregation groove 4, so that liquid droplets containing a precipitation component may stay. Instead, they are collected in the collecting groove 4 and discharged to the outside or solidified in the collecting groove 4.
[0029]
The molded body 8 uses a papermaking mold in which a predetermined pulp fiber slurry is used as a raw material and a set of split molds is assembled to form a cavity, and the cavity inner surface is covered with a predetermined papermaking net in the cavity. While supplying the slurry by pressure injection at a predetermined pressure, negative pressure is sucked from the outside of the papermaking mold to form a predetermined pulp fiber laminate on the inner surface of the cavity, and after the slurry pressure injection, the inside of the pulp fiber laminate Preferably, compressed air is injected under pressure and dehydrated to a predetermined moisture content.
[0030]
Next, as shown in FIG. 5 (b), a hollow bag-shaped core 9 is inserted into the molded body 8. The core 9 preferably has elasticity and can be expanded and contracted. The core 9 is preferably formed of urethane, fluorine rubber, silicone rubber, elastomer, or the like excellent in tensile strength, impact resilience, stretchability, and the like.
[0031]
Next, as shown in FIG. 5 (c), pressurized fluid is supplied into the core 9 to expand the core 9, and the molded body 8 in a wet state is expanded by the expanded core 9 to the inner surface of the housing portion 2. Press to. The molded body 8 is pressed against the inner surface of the housing portion 2 by the expanded core 9, and heat from the heating means is efficiently transmitted through the housing portion 2, so that the molded body 8 is dried, and the housing portion 2. The inner surface shape is transferred to the molded body 8. In this way, since the molded body 8 is pressed against the housing portion 2 from the inside of the molded body 8 to the outside, the molded body 8 is dried with high drying efficiency even if the inner surface shape of the housing portion 2 is complicated. And the inner surface shape of the accommodating part 2 is transcribe | transferred to the molded object 8 with sufficient precision. Furthermore, by setting the forming slit 20 on the inner surface of the housing portion 2 in the above-described range, even after being pressed by the core 9, it becomes difficult for the marks of the slit 20 to be left on the dried molded body 8. As the pressurized fluid used for expanding the core 9, for example, compressed air (heated air), oil (heated oil), and other various liquids are used. Moreover, it is preferable that the pressure which supplies a pressurized fluid is 0.01-5 Mpa, especially 0.1-3 Mpa.
[0032]
When the molded body 8 is sufficiently dried to a predetermined moisture content, the suction through the flow passage 61 is stopped, and the pressurized fluid in the core 9 is removed as shown in FIG. Reduce. Next, the reduced core 9 is taken out from the molded body 8, and both the dry dies 1, 1 'are opened to take out the molded body.
[0033]
The molded body 8 formed in this way has no trace of slits and is smooth and finished with high dimensional accuracy.
[0034]
As described above, according to the drying mold 1 of the present embodiment, the method of drying a molded body using the drying mold 1, and the set of drying molds S, the occurrence of defective products can be kept low even when drying is repeated. The molded body can be produced efficiently.
[0035]
FIG. 6 to FIG. 8 show another embodiment of a set of drying molds according to the present invention and a drying mold of a molded body used therefor. In these drawings, parts common to the drying mold 1 of the embodiment are given the same reference numerals, and descriptions thereof are omitted. Therefore, the description of the above embodiment is appropriately applied to portions that are not particularly described.
[0036]
A set of dry molds S ′ shown in FIG. 6 is formed by abutting the dry mold (one dry mold) 1 and the dry mold (the other dry mold) 1 ′. On the butting surface 3 ′ of the drying mold 1 ′, a communication groove 5 ′ that communicates with the housing portion 2 ′ is formed so as to communicate with the aggregation groove 4 of the drying mold 1. Then, when the drying dies 1, 1 ′ are butted against each other at the butting surfaces 3, 3 ′, the suction groove 7, which is connected to the communication groove 5 and / or 5 ′, the aggregation groove 4, and the flow path 6. "Is formed.
[0037]
The communication groove 5 ′ is preferably formed at a position that does not oppose the communication groove of the dry mold 1 ′ from the viewpoint that the traces of the groove are not left on the molded body as much as possible. From a point, it is preferable to form in the position which opposes. When the communication grooves 5 and 5 ′ are opposed to each other, the total depth of both the communication grooves 5 and 5 ′ is preferably within a range of the depth d of the communication groove 5 (see FIG. 3A). .
[0038]
In the case where the molded body is dried in the set of drying molds S ′ of the present embodiment, the drying mold 1 is fixed when the molded body for drying is transferred to and from the papermaking mold (not shown). The dry mold 1 ′ is movable while being placed at a position, and the wet molded body is sucked under a negative pressure through the slit 20 and the exhaust passage 21 of the dry mold 1 ′ and received from the papermaking mold. And can be dried.
[0039]
According to the set of drying molds S ′ of the present embodiment, the same effects as those of the set of drying molds S in the above embodiment can be obtained, the processing time of the mold can be shortened, and the amount of mold heat can be increased.
[0040]
A set of drying molds S ′ shown in FIG. 7 is formed by abutting a drying mold (one drying mold) 1 ′ and a drying mold (the other drying mold) 1 ″. Drying Aggregating grooves 4 ′ and 4 ″ are intermittently formed on the abutting surfaces 3 ′ and 3 ″ of the molds 1 ′ and 1 ″ so as to surround the accommodating portion 2 so as not to face each other. The dry mold 1′1 ″ is formed in the same manner as the dry mold 1 except that the aggregation grooves 4, ′, 4 ″ are intermittently formed so as not to face each other. Then, when the butted surfaces 3 ′ and 3 ″ are abutted with each other, the communication groove 5 ′, the aggregation groove 4 ′, and the suction / discharge path 7 ′ in which the flow path 6 ′ is communicated and the communication groove 5 ″, the aggregation groove 4 "and the flow passage 6" communicate with each other, and a suction discharge path 7 "is formed.
[0041]
According to the set of dry molds S ′ of this embodiment, the same effect as that of the set of dry molds S of the above embodiment can be obtained, and the heat quantity of the mold can be increased while maintaining sufficient discharge efficiency. The temperature drop is small and the drying efficiency can be increased.
[0042]
A set of drying molds S ′ shown in FIG. 8 is formed by abutting a drying mold (one drying mold) 1 ′ and a drying mold (the other drying mold) 1 ″. The mold 1 ′ is one in which the communication groove 5 is not formed in the dry mold 1, and the butting surface 3 ″ of the dry mold 1 ″ communicates with the housing portion 2 and is abutted with the dry mold 1 ′. A communication groove 5 ″ communicating with the aggregation groove 4 is formed. The form (width, depth) of the communication groove 5 ″ is formed in the same manner as the communication groove 5. When the butted surfaces 3 ′ and 3 ″ are abutted against each other, the communication groove 5 ″ and the aggregation groove are formed. 4 and a suction / discharge path 7 'communicating with the flow path 6 are formed.
[0043]
In the case of drying the molded body in the set of drying molds S ′ of this embodiment, for example, when the molded body for drying is transferred to and from a papermaking mold (not shown), the drying mold 1 ′ is used. Is placed in a fixed position, and the drying mold 1 ″ is movable, and the wet compact is sucked through the slit 20 and the exhaust passage 21 of the drying mold 1 ″ to be received from the papermaking mold and is directly dried. Drying can be carried out against 1 '.
[0044]
According to the set of dry molds S ′ of the present embodiment, the same effect as that of the set of dry molds S in the above embodiment can be obtained. High drying efficiency can be obtained. In addition, the processing time and processing cost can be reduced.
[0045]
The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
[0046]
For example, in the above-described embodiment, the aggregation groove 4 is formed on the abutting surface 3 of the drying mold 1, but instead of the aggregation groove 4, holes of a predetermined form are formed at predetermined intervals and communicated with the holes. The flow path 6 may be formed, and a communication groove communicating with the housing portion may be formed on the abutting surface so as to communicate with the hole.
[0047]
For example, the form of the dry-type container can be appropriately changed according to the shape of the molded body to be dried. In addition, it is preferable to form the slit 20 as in the above-described embodiment in the housing portion, but the form from the housing portion to a predetermined depth is the same slit-like opening shape and then gradually expands as it approaches the exhaust passage. It is also possible to form the exhaust holes other than the slits or the exhaust holes in a form other than the slits so as to communicate with the exhaust path.
[0048]
In addition, the drying mold of the present invention is preferably composed of the block 10 and the back plate 11 as in the drying mold 1 of the above embodiment. However, the drying mold is formed only by the block and the heating means is arranged inside the block. It can also be. Further, the groove 100 is formed on the back surface of the block 10 and the flow path 61 is formed by the groove and the back plate 11. However, the flow path leading to the flow path 60 is directly drilled in the block 10. You can also
[0049]
Moreover, the dry mold of the molded body of the present invention is applied to the dry mold of the molded body used in a set of dry molds configured by abutting a pair of split molds as in the dry mold S of the above embodiment. However, the present invention can also be applied to a dry mold of a molded body used in a set of dry molds formed by abutting three or more split molds (dry molds).
Further, according to the present invention, for example, the mouth and neck portion of the molded body and the accommodating portion of the body portion are configured by abutting two or more split molds, and the accommodating portion at the bottom of the molded body is configured by one split mold. In addition, the present invention can also be applied to a dry mold of a molded body that is used in a set of dry molds that are configured by abutting split molds having storage portions that partially store the molded body.
[0050]
Further, in the dry mold and the set of dry molds of the present invention, as in the dry molds 1 and 1 'of the above-described embodiment, when the corresponding molds are brought into contact with each other, a housing portion for the molded body is formed. Although preferably applied to a so-called split mold, the present invention can also be applied to a female mold in a dry mold in the form of a so-called male-female mold used for the production of a pulp mold product, and a set of male and female molds.
[0051]
【The invention's effect】
According to the present invention, the occurrence of defective products can be kept low even when drying is repeated, and a molded product can be produced efficiently.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing an embodiment of a dry mold of a molded body of the present invention.
2 is a cross-sectional end view taken along the line AA in FIG. 1; FIG.
FIG. 3 is an enlarged view of a main part in the drying mold of the embodiment, (a) is an enlarged cross-sectional view showing dimensions of the communication groove and the aggregation groove, and (b) is a dimension of the communication groove and the aggregation groove. It is an enlarged plan view to represent.
FIG. 4 is a cut end view schematically showing a set of drying molds of the present invention.
5A and 5B are process diagrams schematically showing a method for drying a molded body according to the present invention, in which FIG. 5A shows a state in which the molded body is accommodated, and FIG. 5B shows a state in which a core is inserted. It is a figure, (c) is a figure which shows the press state by a core, (d) is a figure which shows a mold release state.
FIG. 6 is a cut end view schematically showing another embodiment of a set of drying molds according to the present invention.
FIG. 7 is a cut end view schematically showing another embodiment of a set of drying molds according to the present invention.
FIG. 8 is a cut end view schematically showing another embodiment of a set of drying molds according to the present invention.
[Explanation of symbols]
1, 1 ', 1 "Drying mold 2 Molded part 3, 3', 3" Butting surface 4, 4 ', 4 "Aggregation groove 5, 5', 5" Communication groove 6, 6 ', 6 "Distribution Path 7, 7 ', 7 "discharge path 8 compact S, S' a set of drying molds

Claims (6)

In a dry mold of a molded body provided with a housing part of a wet molded body molded by a pulp mold method and a butting surface extending outside the peripheral edge of the housing part,
A hole or an aggregated groove is formed on the abutting surface so as to surround the accommodating part, and a communicating groove that communicates with the hole or the aggregated groove and the accommodating part is formed. In addition, a flow path for suction and discharge leading to the hole or the aggregation groove and the outside is formed,
The flow passage gradually increases in diameter from the butted surface side toward the outside,
A drying mold for a molded body, wherein a suction discharge path is formed in which the communication groove, the hole or the aggregation groove, and the flow path are communicated . A method for drying a molded body using the drying mold of the molded body according to claim 1,
After accommodating the molded body in a wet state in the housing portion, the housing portion is heated while sucking negative pressure through the suction / discharge passage to dry the molded body, and the vapor emitted from the molded body is sucked and discharged. A method for drying molded bodies discharged through a road . A set of a container that is formed by a pulp mold method and includes a housing portion of a wet molded body and a butting surface that extends outside the peripheral edge of the housing portion, and is used by butting each butting surface. In the dry mold,
A hole or an aggregate groove is formed on the butting surface of one of the dry molds so as to surround the accommodating portion, and a flow passage communicating with the hole or the aggregate groove and the outside is formed inside the dry mold. And
The flow passage gradually increases in diameter from the butted surface side toward the outside,
A communication groove communicating with the hole or the aggregation groove and the accommodating portion is formed on the butting surface of any of the dry molds,
A set of drying molds, wherein a suction discharge path is formed in which the communication groove, the hole or the aggregation groove, and the flow passage are communicated with each other when the abutting surfaces are abutted with each other. . Another butting hole or another collecting groove is formed on the butting surface of the other drying mold so as not to face the hole or the collecting groove in one drying mold and so as to surround the housing portion. And another flow passage communicating with the other hole or the other collecting groove and the outside is formed inside the dry mold,
The flow passage gradually increases in diameter from the butted surface side toward the outside,
Another communication groove that communicates with the other hole or the other aggregated groove and the accommodating portion is formed on the butting surface of any of the dry molds,
When the respective abutting surfaces are abutted with each other, another suction discharge path is formed in which the other communication groove, the other hole or the other aggregation groove, and the other flow passage communicate with each other. A set of drying molds according to claim 3. A drying mold for a molded body used for a set of drying molds according to claim 3, wherein the housing part of the molded body in a wet state formed by a pulp mold method and the outside of the peripheral part of the housing part are extended. And a butting surface that
A dry mold of a molded body in which a hole or a collective groove is formed on the abutting surface, and a flow passage communicating with the hole or the collective groove and the outside is formed inside the dry mold. A drying mold for a molded body used for a set of drying molds according to claim 3, wherein the housing part of the molded body in a wet state formed by a pulp mold method and the outside of the peripheral part of the housing part are extended. And a butting surface that
A dry mold for a molded body, wherein a communication groove that communicates with the housing portion and the hole or the aggregation groove in the corresponding other dry mold is formed on the abutting surface.

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