JPH0761694B2 - Method for manufacturing honeycomb formed body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily manufacturing a honeycomb formed body having high pressure resistance with a simple apparatus.

[0002]

2. Description of the Related Art A method for manufacturing a honeycomb body by bonding liners to both cell open surfaces of a honeycomb substrate having a plurality of hexagons formed by bending and joining thin sheets Is well known in the art. Paper, aluminum, etc. are mainly used as the material of such a honeycomb body, and since such a honeycomb body is lightweight and a large number of its cells are hexagonal, pressure resistance and bending rigidity are high. Can be increased. Moreover, the directionality of the bending rigidity is extremely small, and high bending rigidity is exhibited regardless of the bending load applied to the honeycomb body in any direction. Such a lightweight honeycomb body having excellent mechanical strength can be widely used in many industrial fields.

The basics of manufacturing a conventional honeycomb substrate are shown in FIG.
As shown in FIG. 7, a large number of strip-shaped papers or a base material 1 made of an aluminum plate is coated with an adhesive agent 2 at a constant interval as shown in the figure and bonded to each other. As shown in FIG. 18, the cells 17 extending in the vertical direction on the paper surface of FIG. However, according to this manufacturing method, a complicated and expensive device is required because it is required to accurately process such a cell into a predetermined hexagonal shape in order to maintain the physical properties of the product. It requires a lot of manufacturing time and many workers. Thus, a honeycomb body having a large number of hexagonal cells has a superior function of being lightweight, having high pressure resistance and high bending rigidity, and having significantly less directionality of bending rigidity. In the past, the manufacturing thereof required a great deal of labor, and the manufacturing apparatus thereof was complicated and expensive, so that the cost of the honeycomb body eventually increased, which was unavoidable.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to reduce a honeycomb formed body having a hexagonal cell which has a high bending rigidity and a high pressure resistance strength and has a very small direction of bending rigidity with a simple device. It is to provide a method that can be produced at a cost.

[0005]

In order to achieve the above object, the present invention has a large number of hexagonal columnar blocks formed by grooves intersecting with each other and communicating with each other, and a large number of suction holes are formed at the bottom of the grooves. With a forming die in which holes are formed, a thermoformable sheet material is vacuum-formed, pressure-formed, or vacuum-pressure-formed to produce a honeycomb formed substrate having projecting walls that partition a large number of hexagonal cells, A method for manufacturing a honeycomb molded body in which a liner is bonded to at least one of the back surface side of the honeycomb molded substrate opposite to the projecting wall and the tip of the projecting wall is proposed.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a partial perspective view showing an example of a molding die for carrying out the present invention. The molding die 10 has a mold plate 11 whose surface is formed in a flat shape, and on the surface side of the mold plate 11, grooves 12 intersecting with each other and communicating with each other.
Are formed. In the template part at the bottom of this groove 12,
As shown in FIG. 2, a large number of suction holes 13 are formed so as to penetrate therethrough,
Further, suction holes 113 are also formed through the template portions other than the grooves 12. The diameter of these suction holes 13 and 113 is set to, for example, about 0.03 to 0.5 mm.

The template 11 is made of, for example, steel, iron, brass, copper,
The template 11 can be made of a metal such as stainless steel or aluminum, or an appropriate hard material such as wood, hard synthetic resin, or gypsum, but the template 11 can be made of a material that is difficult to rust or is subjected to anticorrosion treatment. preferable. Figure 1
In the example shown in, the groove 12 is formed by grinding the surface of the template 11, and the width of the groove 12 is set to about 0.2 to 3.0 mm, for example.

For convenience of explanation, FIG. 1 shows that the grooves 12 define a large number of blocks 14 in the shape of a regular square pole (the same applies to FIG. 15), but the manufacture of the honeycomb formed body according to the present invention is shown. As shown in FIG. 8, the molding die used in the method has a large number of hexagonal column-shaped blocks 1 with grooves 12.
4 are formed.

As shown in FIG. 2, a mold plate 15 of the vacuum forming machine is integrally connected to the lower part of the mold plate 11 in a state of being in contact with the mold plate 15. The mold plate 15 is provided with an intake air communicating with the suction holes 13 and 113. A passage 16 is provided, and this intake passage 16 is connected to a vacuum pump (not shown). In this way, the molding die 10, the molding plate 15 located below the molding die 10, and the vacuum pump constitute a vacuum molding machine.

The mold 10 constructed as described above can be used as a vacuum mold to mold a thermoformable sheet material by a normal vacuum molding method. That is, as shown in FIG. 2, a thermoplastic synthetic resin sheet 17, which is an example of a thermoformable sheet material, is held by a clamp 18 and the sheet 17 is heated.
2 is placed on the molding surface on the side where the 2 is formed, and is placed down, and by the suction action of the vacuum pump described above, the suction passage 16 and the suction hole 1
The thermoplastic synthetic resin sheet 17 placed on the molding die 10 is sucked through 3, 113, and the sheet 17 is vacuum-formed as shown in FIG. At that time, the suction hole 113
Vacuum forming is possible even without the above, but with this, it is possible to perform the forming in a short time without causing air pockets.

When the sheet 17 molded as described above is released from the molding die 10, a honeycomb molded substrate 21 having projecting walls 19 defining a large number of cells 20 is obtained, as shown in FIG. In this honeycomb molded substrate 21, the protruding wall 19 is molded following each block 14 of the molding die 10, so that a so-called honeycomb-shaped cell 20 corresponding to the block shape is formed. Note that, also in FIG. 4, the cells 20 of the honeycomb molded substrate 21 are illustrated for convenience of description.
Is shown to have a regular quadrangular shape, but in reality, by using the molding die 10 shown in FIG. 8, a honeycomb molded substrate 21 having cells of a regular hexagonal shape is manufactured.

With respect to the honeycomb molded substrate 21 thus molded, as shown in FIGS. 5 and 6, the protruding wall 1 is formed.
When the liners 22 and 23 are adhered only to the back surface 28 side opposite to 9, or only to the tips of the protruding walls 19, the honeycomb formed bodies 25 and 26 are completed. Particularly in the latter case, that is, when the liner 23 is bonded to the tip of the projecting wall 19, the projecting wall 19
Since the cell 20 is sealed by the liner 23 and the liner 23,
Since the honeycomb molded body 26 has an increased compressive strength and the honeycomb molded substrate 21 and the liner 23 have a sandwich structure, the honeycomb molded body 26 has a high bending strength.

Further, as shown in FIG. 7, liners 22 and 23 may be adhered to the back surface 28 side of the honeycomb molded substrate 21 and both sides of the tip of the protruding wall 19 to obtain a honeycomb molded body 27. In this case, the compressive strength and bending strength are remarkably increased as compared with the case where the liner is adhered to only one surface.
Therefore, it is possible to reduce the thickness of the liner 22 adhered to the back surface 28 side. As described above, in the present invention, a liner is bonded to at least one of the rear surface side of the honeycomb formed substrate opposite to the protruding wall and the tip of the protruding wall to manufacture a formed honeycomb body.

When a thermoplastic synthetic resin sheet is used as the liners 22 and 23, the liners 22 and 23 are used.
In a state where the suction plate is vacuum-sucked, it may be softened and melted by a heating device, moved onto the honeycomb formed substrate 21, and pressure-bonded. In this case, the honeycomb molded substrate 21 and the liner 2
When 2 and 23 are made of the same type of thermoplastic synthetic resin, they can be bonded to each other without using an adhesive.

When the liner 22 made of a thermoplastic synthetic resin sheet of the same type as that of the honeycomb molded substrate 21 is bonded to the rear surface 28 side of the honeycomb molded substrate 21, it is immediately after the honeycomb molded substrate 21 is molded, as shown in FIG. Then, this is the mold 10
Before being separated from the substrate 21, the liner 22 held by the clamp 118 and heated is lowered onto the back surface 28 of the substrate 21, and the heat of the liner 22 and the heat of the honeycomb molded substrate 21 bond the two. It is also possible to do so, and if done in this way, the bonding work can be performed extremely easily. When the liner 23 is bonded to the tip of the protruding wall 19 of the honeycomb molded substrate 21, the bonding work is performed after the honeycomb molded substrate 21 is separated from the molding die 10.

In the molding die 10 shown in FIG. 1, the mold plate 11 was ground to form the grooves 12, but as shown in FIG. 9, a plurality of blocks 14a were fixed on the plate material 11a, and It is also possible to form the molding die 10 made of the template 11 by defining the grooves 12 that intersect and communicate with each other between the blocks 14a. If the template 11 is manufactured in this way, the grinding work of the groove 12 becomes unnecessary,
The molding die 10 can be easily obtained.

Each block 14a can be fixed to the plate material 11a by, for example, an adhesive or welding. At that time, a pin 29 projecting downward from the bottom surface of each block 14a is integrally provided on each block 14a so as to project. Pin 29 of
The blocks 14a are positioned by inserting them into the mounting holes 30 formed in the plate 11a, and the blocks 14a are fixed with an adhesive or the like.
The work can be further simplified if it is integrally fixed to the.

In the embodiment described above, the surface of the template 11 is formed in a flat shape, but as shown in FIG. 10, the surface is formed in a curved shape, and the depth of the grooves 12 extending to intersect each other changes. It is also possible to use a molding die 10 composed of the above-mentioned template 11. By using the molding die 10, it is possible to obtain a honeycomb molded substrate having a shape corresponding to the curved surface,
As a result, it is possible to manufacture a honeycomb formed body having a form corresponding to a complicated internal shape of an automobile, an airplane, a railroad vehicle, or the like. Similarly to the case shown in FIG. 9, the template 11 as shown in FIG. 10 can also be manufactured by fixing a plurality of blocks on the plate material.

Further, as shown in FIG. 11, even if a molding die 10 made of a template 11 having a curved surface and a groove 12 having a constant depth is formed, the curved shape can be obtained. The honeycomb formed substrate can be obtained. Again, as described above in connection with FIG. 2, the clamp 18
The thermoplastic synthetic resin sheet held and heated by the above is placed on the molding surface of the molding die 10 shown in FIG. 11, and a plurality of suction holes 13 formed in the bottom of the groove 12 are formed by the suction action of the vacuum pump. Then, the thermoplastic synthetic resin sheet on the molding die 10 is sucked through the other suction holes 113 and the intake passage 16, and this is thermoformed to obtain the honeycomb molded substrate 21.

Here, when the liner 22 made of a thermoplastic synthetic resin sheet is adhered to the back surface 28 of the honeycomb molded substrate 21 shown in FIG. 11, after the honeycomb molded substrate 21 is molded, it is separated from the molding die 10. Without forming, through holes are formed in the portion of the honeycomb molded substrate 21 corresponding to each suction hole 113 of the molding die 10 by a punching jig (not shown), and the honeycomb molded substrate 2 on the molding die 10 is formed.
The back surface 28 of 1 is heated by heaters (not shown) arranged along it.

On the other hand, held by the clamp 118,
When the heated liner 22 is placed on the forming die 10 from above the honeycomb formed substrate 21 and the suction passage 16 is sucked by the vacuum pump, a through hole is formed in the portion of the honeycomb formed substrate 21 corresponding to the suction hole 113. Is formed,
The liner 22 is vacuum-formed on the back surface 28 of the honeycomb formed substrate 21 and both are heat-bonded to obtain a two-layer honeycomb formed body.

Alternatively, simultaneously with the start of forming the honeycomb formed substrate 21, the liner 22 held and heated by the clamp 118 is brought above the forming die as shown in FIG. 11, and the clamp 118 is held.
This clamp 118 is pressed against the clamp 18 for
Through a conduit 50 connected to the through-hole 118a of the honeycomb molded substrate 21 and air is sucked by a vacuum pump (not shown) to evacuate between the honeycomb molded substrate 21 and the liner 22 to thermally bond the liner 22 to the back surface 28 of the honeycomb molded substrate 21. However, a two-layer honeycomb molded body can be obtained. By forming a plurality of through holes 118a in the clamp 118 and connecting them to a vacuum pump through conduits, the space between the honeycomb molded substrate 21 and the liner 22 can be uniformly degassed, and the completed honeycomb is completed. The quality of the molded product can be improved.

In this example, as in the previous example, the molding die 10
It is not necessary to make a through hole in the portion of the honeycomb molded substrate 21 corresponding to the intake hole 113 of the honeycomb molded substrate 2
If the liner 22 is heated in a separate step so that the liner 22 can be thermally adhered to the back surface 28 of the molded substrate 21 immediately after molding of No. 1, it is not necessary to heat the back surface 28 of the honeycomb molded substrate 21 again. In this way, a honeycomb molded body can be obtained simply and quickly.

To bond the liner to the tip of the projecting wall of the two-layer honeycomb molded body obtained by each of the above methods,
As shown in FIG. 12, the two-layer honeycomb molded body 25 separated from the molding die 10 shown in FIG. 11 is placed upside down and placed on the convex mold 51, and the molded body 25 is not shown in the heater. To heat. For example, a heater arranged along the tip of the protruding wall 19 of the molded substrate 21 is arranged in parallel with the tip of the protruding wall 19 and the tip is heated.

On the other hand, the heated liner 23 is set in another vacuum forming die 52 having a forming surface corresponding to the curved surface along the tip of the projecting wall 19, and a vacuum pump (not shown) is passed through the suction hole 53 and the intake passage 54. And the liner 23 is vacuum-formed.

Next, the heater that has heated the tip of the projecting wall 19 is moved up, moved horizontally and retracted, and the liner 23 immediately after being molded by the vacuum molding die 52 is
While being attached to the molding die 52, the liner 23 and the tip of the projecting wall 19 of the honeycomb molded substrate 21 are heat-bonded by descending and closely adhering onto the two-layer honeycomb molded body 25 on the convex mold 51. To do. Next, this is separated from the molding die, and a three-layer honeycomb molded body is completed. Such a molded product can be used, for example, as a container that is lightweight and has excellent heat shielding properties.

In each of the methods described above with reference to FIGS. 11 and 12, instead of adhering each sheet only by heat, an adhesive is applied to the adhering portion of each sheet, and the adhesive force is also applied. It can also be configured to join the sheets.

By the way, the molding die 10 shown in FIG.
It can be manufactured by grinding the groove 12 and the suction holes 13 and 113 in the template 11, but since the width of the groove 12 is extremely narrow, it is not easy to grind the suction hole 13 at the bottom thereof.

FIGS. 13 and 14 are views showing a method for manufacturing the mold 10 of the type shown in FIG. 11 more easily.

First, a box-shaped mold 55 having an open upper portion is prepared, and then, for example, a large number of hexagonal column-shaped blocks 114 are arranged with a minute gap 57 therebetween, and each block 11 is formed.
The lower pin 129 of 4 is fitted into the mounting hole formed in the bottom wall 55a of the mold 55, and each block 114 is fixed to the mold 55 with an adhesive or the like. At that time, a breathable member such as the wire mesh 5 is provided between the bottom surface of the block 114 and the bottom wall 55a of the mold 55.
Place 6 An exhaust hole 59 communicating with a vacuum pump (not shown) is formed in the lower portion of the mold 55.

Next, the gap 57 between the blocks 114 is formed.
Then, a large number of rods having a small diameter, for example, a metal round rod 58 is inserted from above. As can be seen from FIG. 14, the length of the round bar 58 is slightly shorter than the total height of the gap 57. After inserting the round bar 58 into the gap 57, the groove 12 having a constant depth is formed above the gap 57. Left behind. This groove 12 corresponds to the groove 12 of the molding die 10 shown in FIG. Each block 1
The gap 57 between the fourteen, that is, the width of the groove 12 is, for example, 2
mm, for example, a round bar 58 having a diameter of 1 mm
Are arranged side by side and inserted into the gap 57. At this time, each round bar 58
A minute gap is created between them, and the air permeability is given here. Finally, the upper surface of each block 114 to be the molding surface is cut into a smooth curved surface to finish the molding die 10. Further, in each block 114, an air intake hole 113 penetrating the block 114 in the vertical direction is formed in advance, if necessary.

When the heated thermoplastic synthetic resin sheet is placed on the upper surface of the block 114 and the vacuum pump is operated,
Air is sucked through the gaps between the round bars 58, the wire netting 56, and the exhaust holes 59, and the sheet is vacuum-formed to obtain a honeycomb-formed substrate.

As described above, also in the molding die 10 shown in FIGS. 13 and 14, grooves 12 which communicate with each other and intersect with each other are formed in the mold plate including the block 114 and the mold 55, and the bottom of the groove 12 is formed. Can form a honeycomb formed substrate having a plurality of suction holes formed by gaps between the round bars 58, and vacuum forming a thermoformable sheet material to form projecting walls defining a large number of cells.

Further, the block 114 and the round bar 58 shown in FIG. 14 are provided with, for example, a horizontally penetrating hole, through which a cooling pipe 60 through which cooling water flows is passed as shown by a chain line in FIG. Can also be configured for effective cooling.

As a special example of the molding method, an example in which the mold surface is a cylindrical peripheral surface is shown in FIGS. 15 and 16. Grooves 12 intersecting with each other are formed on the peripheral surface of the template made of the cylindrical body 41 in the same manner as in the above embodiment, and the cylindrical body portion at the bottom thereof is formed,
A plurality of suction holes 13 and 113 are penetratingly formed in the other cylindrical body portion to form the molding die 40. The cylindrical body 41, together with both side plates 46 integrated therewith, and the shafts 44 also integrally projecting on the side plates 46, are rotationally driven in the direction of arrow A at a predetermined peripheral speed by a driving device (not shown). The shaft 44 has a suction pipe 47.
Is interpolated. The suction pipe 47 is insulated from the rotation of the cylindrical body 41, is always held stationary, and has one end connected to a vacuum pump (not shown).

In the cylindrical body 41, as shown in FIG. 16, a pair of walls 4 fixed to the suction pipe 47 at the base end side.
8 and 48 are fixedly arranged, and the tips of the walls 48 and 48 are in sliding contact with the inner peripheral surface of the rotating cylindrical body 41, and the inner peripheral surface and both walls 48 and 48 form a fan shape. The suction chamber 45 is partitioned and formed. Further, the inside of the suction chamber 45 and the inside of the suction pipe 47 communicate with each other through a ventilation hole 47 a formed in the pipe 47. This allows the walls 48,
The suction holes 13 and 113 of the cylindrical body 41 located between the 48 communicate with a vacuum pump, and the suction chamber 45 is sucked by this pump. The cylindrical body 41 is made of wood, synthetic resin, metal, or the like, like the template 11 in each of the above-described embodiments, and the groove 12 grinds the cylindrical body 41 or fixes the blocks at predetermined intervals. It can be formed by the same way as in the previous embodiment.

The details of the method for manufacturing a honeycomb molded body by the molding die 40 will be clarified with reference to FIG. When the first thermoplastic synthetic resin sheet 117 extruded from the first extruder (not shown) is supplied to the surface of the rotating mold 40, the suction holes 1 corresponding to the suction chambers 45 are formed.
Air is sucked through 3,113 and adsorbed on the peripheral surface of the cylindrical body. In this way, the sheet 117, which is an example of a thermoformable sheet material, is vacuum formed by the forming die 40 having the groove 12 provided in the cylindrical body 41, and has the projecting wall 119 that divides a large number of cells 120. The honeycomb formed substrate 121 is manufactured.

In order to obtain a honeycomb molded body by adhering a liner to the above-mentioned honeycomb molded substrate 121, the thermoplastic synthetic resin sheet 122 which is the first liner extruded from the second extruder (not shown) is used. Then, it may be adsorbed onto the molding die 40 and supplied onto the rotating honeycomb molded substrate 121, and bonded to the rear surface 128 side thereof by heat fusion. As a result, a honeycomb molded body having a liner adhered only to the back side can be obtained.

Further, when the liner is also adhered to the tip of the protruding wall 119 of the honeycomb formed substrate 121, the honeycomb formed substrate 121 is guided between the pressure-bonding rolls 78, 78, and the third extruder (not shown) is used. When the thermoplastic synthetic resin sheet 123 to be the extruded second liner is inserted into the protruding wall 119 side of the honeycomb formed substrate 121 and simultaneously pressed, and subsequently cooled between the cooling rolls 79, 79, A honeycomb molded body in which a liner is bonded to the tip of the protruding wall 119 of the molded substrate 121 and the back surface 128 side is obtained. Further, by omitting the adhesion of the sheet 122 that serves as the first liner, a honeycomb formed body having the liner adhered only to the tip of the projecting wall 119 can be obtained. In any case, FIG.
By adopting the molding method as shown in (1), honeycomb molded bodies can be continuously produced, and a long product can be obtained.

All of the above examples are the honeycomb molded substrate 2
Although 1,121 was formed by the vacuum forming method, the honeycomb formed substrate can be formed by pressure forming, or vacuum pressure forming using these in combination. Since the examples employing these molding methods are obvious from the above-mentioned examples, a detailed description thereof will be omitted.

By the way, the width of the groove 12 formed in the molding die used in each of the above-mentioned embodiments is appropriately set as exemplified above according to the shape of the honeycomb molded substrate to be obtained. , Its width is as shown in FIG.
The thickness of the formed sheet of the honeycomb formed substrate 21 is set to be approximately twice as large as that of the sheet, and the sheet portions inserted into the grooves 12 are in close contact with each other, and the heat is applied to the both sheet portions to be welded. And, the strength of the welded sheet portion can be particularly enhanced. As a result, the completed honeycomb molded body can be made even stronger and the range of use thereof can be expanded.

As the thermoformable sheet material for the honeycomb formed substrate used in the present invention, polypropylene,
Polyethylene, polycarbonate, polyacetate, A
There are thermoplastic resins such as BS resin, vinyl chloride resin, and acrylic resin. Further, examples of the material of the liner adhered to at least one of the tip end and the back surface of the protruding wall of the honeycomb formed substrate include the above-mentioned thermoplastic resin sheet and metal sheet. Unless the honeycomb formed substrate and the liner material are the same type of thermoplastic synthetic resin and at least one is in a melt-softened state, the adhesive is applied to one side or both sides of the honeycomb formed substrate and one side of the liner before adhesion. There is a need. It is also possible to use a composite liner in which a decorative surface material such as a fiber material or a cushion material is previously laminated on the liner, and in this case, a honeycomb formed body having an excellent surface appearance can be obtained.

As the cosmetic surface-applying agent, woven cloth, non-woven cloth, vinyl chloride resin, ethylene / vinyl acetate copolymer,
It is possible to use various colored sheets such as polypropylene and polyethylene, patterned sheets, and uneven patterned sheets,
Further, as the cushion material, a foamed sheet of vinyl chloride resin, polypropylene, polyethylene, polyurethane, or the like can be adopted, and it is possible to provide a cushioning-feeling surface material. In the case of the above-mentioned continuous production method, as shown in FIG. 16, not only the heating but also the back surface of the thermoplastic synthetic resin sheet 123 serving as the second liner is preliminarily coated with an adhesive which is activated when necessary. The covering material 39 may be inserted between the pressure rolls 78, 78.
Similarly, a covering material may be adhered to the outside of the sheet 122 constituting the first liner.

The honeycomb molded body manufactured by the method according to the present invention can be used for automobiles, airplanes, railway vehicles as described above, and can also be widely used for ships, buildings, lightweight heat shield containers and the like. .

[0046]

According to the present invention, a honeycomb formed body having a large number of hexagonal cells, which is lightweight, has high bending rigidity and compression resistance, and has extremely little directionality of bending rigidity, can be easily formed. It can be easily manufactured only by using a mold. Moreover, it was difficult to partially change the height of the honeycomb formed body by the conventional method, but this can be achieved by partially changing the groove depth in the present invention. It is also possible to obtain a curved honeycomb molded body by making the surface of the mold curved.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a molding die for forming a honeycomb formed substrate by a vacuum forming method.

FIG. 2 is a cross-sectional view showing a state when a honeycomb formed substrate is formed by the forming die shown in FIG.

FIG. 3 is a cross-sectional view showing a state when a honeycomb formed substrate is formed by the forming die shown in FIG.

FIG. 4 is a perspective view of a formed honeycomb molded substrate.

FIG. 5 is a cross-sectional view of a honeycomb molded body in which a liner is bonded to the back surface side of a honeycomb molded substrate.

[Fig. 6] Fig. 6 is a cross-sectional view of a honeycomb formed body in which a liner is bonded to the tip of the protruding wall of the honeycomb formed substrate.

[Fig. 7] Fig. 7 is a cross-sectional view of a honeycomb formed body in which a liner is adhered to the front end and the back surface side of the protruding wall of the honeycomb formed substrate.

FIG. 8 is a plan view showing another example of the molding die.

FIG. 9 is a cross-sectional view showing still another example of the molding die.

FIG. 10 is a cross-sectional view showing still another example of the molding die.

FIG. 11 is a cross-sectional view showing still another example of the molding die.

FIG. 12 is a cross-sectional view showing a method for manufacturing a three-layer honeycomb formed body.

FIG. 13 is a plan view of a mold including a block and a metal round bar.

14 is a sectional view taken along line XIV-XIV in FIG.

FIG. 15 is a perspective view of a molding die that continuously manufactures a honeycomb molded substrate.

FIG. 16 is an explanatory cross-sectional view of an apparatus for continuously manufacturing a honeycomb formed body.

FIG. 17 is a cross-sectional view illustrating a process of manufacturing a conventional honeycomb substrate.

FIG. 18 is a plan view of a conventional honeycomb substrate.

[Explanation of symbols]

 10 Molds 12 Grooves 13 Suction Holes 14 Blocks 14a Blocks 19 Projection Walls 20 Cells 21 Honeycomb Molded Substrates 22 Liners 23 Liners 25 Honeycomb Molded Articles 26 Honeycomb Molded Articles 28 Back 40 Molds 114 Blocks 119 Projected Walls 120 Cells 121 Honeycomb Molded Substrates 128 back

Claims (1)

[Claims] 1. A intersect each other physician, and the grooves communicate with each other
Therefore, a large number of hexagonal blocks are formed,
The bottom number of suction molds hole that is formed of serial grooves, a thermoformable sheet material vacuum forming, pressure forming, or vacuum pressure forming to a projecting wall for partitioning a number of hexagonal cells A method for manufacturing a honeycomb molded body, comprising: manufacturing a honeycomb molded substrate having the same; and bonding a liner to at least one of a rear surface side of the honeycomb molded substrate opposite to a protruding wall and a tip of the protruding wall.