JPS58107338A - Method of molding interior finish material made of paper corrugated cardboard and its molding die - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for molding an interior material made of filter paper membrane poles used as interior parts of vehicles, ships, houses, etc., and a mold used directly to carry out the method.

Conventionally, the molding method and mold for ridge interior materials have been disclosed in Japanese Utility Model Publication No. 1, Publication No. 55-20489, filed by the present applicant.
There are those shown in FIGS. 4 to 4. To explain based on the drawings, a mold 1 has a fixed concave mold 2 installed at a lower position, a convex mold 3 that can be moved up and down to engage with the concave mold 2 at an upper position, and each mold '2. 3, a concave surface 2a and a convex surface 3a of a predetermined type are formed as molding surfaces, respectively.

Moreover, when the convex mold 3 finishes descending, each of these mold surfaces 2 a
A required clearance 4 is formed between the surfaces of +3a, and the interior material can be molded into a shape corresponding to the clearance 4. Note that heater vibrators 6 through which heating fluid supplied from a heating fluid source 5 flows are disposed in the concave mold 2 and the convex mold 3, respectively, so that each mold 2.3 is heated.

As shown in FIG. 3, the paper corrugated board base material a, which serves as the interior material, includes a corrugated core a, 1, a front liner (upper liner in the figure), a back liner (upper liner in the figure), It consists of an adhesive material a3 that is in contact with these two liners and the cores a, 1, but in some cases, the cores a, 1 and both liners a
A film-like thermofusible adhesive is inserted between the core a1 and both liners a2, with the liners a1 and a2 not bonded to each other. During molding, in the former case, the adhesive melts due to contact with the base material of the heated mold, and in the latter case, the liner A2 is left in its original state.
The molding is relatively easy because the core a1 is often displaced from the core a1 and the core a1 is deformed during molding. However, since corrugated board, which is primarily made of fiber material, does not have elasticity per se, there is excess thickness on the front liner that comes into contact with the convex surface, which tends to cause wrinkles.

Therefore, in order to prevent the occurrence of wrinkles, 30 pieces of convex type
A blank holder 7 is provided in one portion, respectively.

As the details of this blank holder 7Fi are shown in FIG. The actuating rod 10 is given a biasing force to the main blade by
A support bar 11 is attached to the lower end of each of the actuating rods 10. A roller 12 is pivotally supported on the upper side of the support bar 11, and rollers 12 are aligned in the longitudinal direction of the rollers 1 and 2. A plurality of suppressing members 13 are fixed to the side surface of the crosspiece 11. In addition, a nut for preventing falling off is screwed into the actuating rod 10 as a stopper 14, and a pressure-welding member having a cross-section of an angular shape is attached to the upper part of the @ surface of the concave mold 2 so as to be in a pressing relationship with the roller 12. A plate 15 is extended. .

Next, the operation revealed by the above structure will be explained with reference to FIG.

First, paper and cardboard base material a, which will be the interior material, is placed in a fixed concave 2F.
(hereinafter referred to as base material a) When the movable convex die 3 is placed in a fixed position and lowered, the deformation of the base material a by each of the dies 2 and 3 progresses. After contacting and then pressing the base material turtle toward the pressure contact plate 15 by the biasing force of the spring 9, the base material a has both edges a4 as shown in FIG. As a result, the base material a is held in pressure contact with the region.

As the convex mold 3 further descends and the deformation of the base material a progresses, the base material a is generally pulled inward and narrowed, but the pressure contact area by the roller 12 is not in the direction of the tension. Since it is suitable for right angle force and has a concave shape similar to the roller 12, as long as the elastic force by the roller 12 is set to cut the groove, friction and riding resistance are relatively small.

Furthermore, since the crushing strength of the medium 5al is low near the crushed area, the resistance of the pressed area against the lead force is small, and N! , the material a overcomes the resistance force and moves inward between the convex mold 3 and the concave mold 2 relatively easily, so that cracks in the liner on the side (outer side) are prevented from occurring, and the surface Wrinkling in the (inner) liner in the direction along the corrugations is prevented.

In this way, the convex mold 3 descends to the final stage and the molding of the interior material is completed.

However, with the conventional method of first pressing the edges of the base material with a roller or the like, it is impossible to completely prevent the occurrence of wrinkles. This is because most of the interior decorations of vehicles, ships, board layers, etc. are large.
Initially, when a base material is placed on the concave FJrY position +1, the center part will sag due to its own heavy electric current, causing a so-called flexing sound, and one child can be visually observed toward the liner in Table 1+11J (inner side). Fine wrinkles that are difficult to form can develop, and depending on the situation, they become the basis for growing into larger wrinkles. Therefore, when the convex surface is brought into contact with the front liner to suppress this deflection and the fine wrinkles,
Motozuki has not received enough heat yet, and has not used any adhesive materials.
Also, since the back liner is not in contact with the concave surface,
Since both edges are compressed without being crushed or decreasing in strength, the bottom liner on the center side of the curvature receives compressive force, just like when a single plate is bent. Moreover, the contact resistance with the convex surface is weak, so the front handle
i Partially enlarges and grows into eye-catching wrinkles. Looking at the inertia in more detail, as shown in Figure 4, if the edge of the bent base material is pressed down and the convex shape is lowered,
Since the center part is lowered, the convex surface first comes into contact with the middle part between the center and the edge part, and the deformation progresses mainly by retaining the deflection where the force is applied.

Therefore, in the conventional molding method, the generation of wrinkles is completely prevented by deforming the base material while it is still bent, and deforming it by holding the edge of the base material. However, there is a problem in that it can lead to a decline in quality. Furthermore, since the member that clamps the edge of the base material has a dual function of holding and moving, the number of parts is large and complex, resulting in a high production cost. .

This invention has two features in the molding of soft clay interior materials: the edge clamping force of the anti-wrinkle valve can be extremely small; The anti-wrinkle force is determined by the force that a person can use to grasp the edges and parts between their fingers. We focused on the following points: the effect is extremely pure, and the wrinkle-preventing pressing surface only needs to be extremely small, and the wrinkle-proofing surface does not have to extend to the edge of the workpiece. It has been done.

That is, in the present invention, a paper cardboard base material is placed on a concave mold having a protruding part so that both edges thereof are in contact with the protruding part, and a convex mold having a protruding part is formed. While bringing them relatively close to the concave mold, push both edges of the paper/corrugated cardboard base material into the gap formed between the side plate part and the protrusion, and press the inner surface of the side plate part and the protrusion. The above-mentioned problem is solved by heat press molding while applying a tensile force to the paper/corrugated cardboard base material by sandwiching it between the outside surfaces of the parts. As the mold to be used, a protruding part having a curved Ifit at the upper end is provided on both sides of the concave mold, and a side plate part whose lower end is located below the lowest surface of the convex surface is provided on both sides of the convex mold. The above-mentioned problem is solved by adopting a mold structure in which a gap is formed between the outer surface of the protruding portion and the inner surface of the side plate portion when the mold is brought relatively close to the concave mold.

The method of the present invention will be explained below along with a first embodiment of the mold of the present invention shown in FIGS.

1W1- is used for the same members as in the conventional example, and their explanations will be omitted.

First, regarding the configuration of the mold, reference numeral 16 is fixed to the lower part of the mold l and has a nine-concave shape, and protrusions 16a having a curved surface with a semicircular cross section are protruded from the upper sides of both sides, and side surfaces 16bFi
A plane extending in the upward and downward direction of the convex mold 17 is formed along the outer end of the protrusion 16a.

The convex mold 17 is movably mounted on the upper part of the mold 1 so as to be aligned with the concave mold 16, and the convex molds 17 are arranged on both sides.
- A side plate ff1s17a is formed vertically so as to surround the concave mold 160 when lowered, and its inner surface is a plane parallel to the side surface 16b of the concave mold 16, and the distance between it and the narrow surface 16b is the thickness of the base material a. A gap tlt- is maintained which is slightly larger than t, and its lower end is located lower than the lowest surface of the convex surface 3a by a dimensional difference l.

Next, a method of the present invention using a mold having a soft clay structure will be described.

1. First, raise the convex mold 17 to its fullest extent, and place the base material a at a predetermined position on the upper surface of the concave mold 16. When placed, as shown in FIG. 5(5), the base material a becomes bent due to one pot as described above. Next, convex f! ! 17 When the side plate part l is lowered, the lower surface of the side plate part a first comes into contact with the base material a, and as the convex mold 17 is lowered, the edge a4 of the base material a is The protruding portion 16a of the concave mold 16 is pressed by the lower surface of the plate portion 17a.
Although it is bent along the outside 11t (1m16b and pushed into the gap tl), the front liner a2ati that contacts the inner surface of the 111 plate $17a is pulled downward due to the frictional resistance with the inner surface of the side plate portion 17a. The base material a reduces its deflection and returns to almost its original flat state.Then, the convex mold 17 further descends, and the convex surface 3a touches the liner a2a on the side of the base material a, as shown in C) of the same figure. Touched, this time,
The pressing force of the convex surface 3a begins to forcefully push down the base material at the center. Therefore, the edge of base material a @ a 41 &, II &
The 1st part 16th side 6th side plate is eroded 7 and overcomes the tail kicking resistance and is drawn between the convex mold 17 and the concave mold 160, but at this time, the base material a is constantly pulled outward by the frictional resistance Dr. As mentioned above, the adhesive material a3 is melted by heating, and the liner a2 on the front and back can be changed to medium or T depending on the condition of the pressurized area.
It is deformed as it is effortlessly displaced from the Zal, and is crushed by the center core A1 depending on the location, and is finally molded into a predetermined shape in the state shown in Fig. 6.

Therefore, in this first embodiment, when using a mold, the edge of the base material is held between the convex side plate part and the concave protrusion part,
First, the base material is returned to a flat state, and when the base material is deformed, the process is performed from the center while keeping the base material in an outwardly stretched state.This has the effect of completely preventing the formation of wrinkles.

Further, the structure for holding the edge of the base material is provided with a concave protrusion having a semicircular curved surface in the curved surface embodiment.

Not only is the manufacturing cost extremely low since the side plate portion can be formed in a very simple manner in a convex shape, but it also has the advantage that there is no chance of failure since the structure does not require fixation and movement.

Next, a second embodiment of the mold according to the present invention will be explained based on FIGS. are divided into side plates and protruding plates whose height and length can be adjusted to 1iIJ. Incidentally, the same reference numerals are used for the members of the first embodiment and the fourth embodiment, and the explanation thereof will be omitted.

First, to describe its structure, 1B is a concave type, and 19 is a protruding plate, which is formed into a long plate with a curved top and a semicircular cross section in this example, and is attached to the concave type 18 at required points in the longitudinal direction. A plurality of longitudinal long holes 19a that penetrate the bolt 20 and long holes 19b that allow the head of the bolt 20 to be digested from the surface are provided.

Reference numeral 21 denotes a convex type, and 22 denotes an elongated side plate, in which elongated holes 22a in the longitudinal direction are bored at required positions in the longitudinal direction, through which the mounting bolts 23 to the convex type 21 are inserted. Reference numeral 24 denotes a gap adjustment means 9 i14 adjustment washer, which is intended to adjust the size of the gap t1 formed between the side plate 22 and the protruding plate 19. With the long hole 19a, long groove 19b, and mounting bolt 20,
The elongated hole 2 constitutes an adjusting means for adjusting the height 1 of the protruding plate 19.
2a, the mounting bolts 23 constitute adjustment means for adjusting the length of the side plate 22.

Since the structure is made of soft soil, the height of the protruding plate 19 is adjusted to the elongated hole 19a.
Not only can it be adjusted by retightening the mounting bolts 20, but it can also be replaced with one that has a different top curved surface shape, radius of curvature, etc. to match the base material used at that time. Also, the position of the lower end of the side plate 2 and the convex surface 3
Using the elongated hole 22a, the dimensional difference l from the tipmost position of &
The tightening can be adjusted by changing the vertical mounting position of the side plate 22, and the gap t10 dimension can be adjusted by replacing the adjustment washer 24 with one of a different thickness. is possible. In other words, it is possible to select the wrinkle prevention valve conditions suitable for the base material a or the molded shape. Furthermore, since the projecting plate 19 and the side plate 22 are attached separately,
There is also the advantage that manufacturing of the concave mold 18 and the convex mold 21 is simplified and facilitated.

2. The method of molding the interior material is the same as when using the mold of the first embodiment, and is omitted here.

Next, a third embodiment of the device of the present invention will be described based on FIG.

This third embodiment is the same as the first embodiment, but it can also be applied to the second embodiment with some structural changes.

First, to describe the structure, reference numeral 25 is a base material holder, which is attached to a required side surface of the lower part of the concave mold 16, and on the upper part thereof.

At a position corresponding to the upper surface of the concave mold 16, an insertion hole 25a having a suitable size of 9 is bored in the base material a. In addition, a known saw blade 26 for cutting the base material a etc. is provided at the lower part of the side plate of the convex mold 170 and protrudes downward.

To describe its operation, when the convex mold 17 is fully raised, the base material a is pushed out from the insertion hole 25a, and the concave mold 1
When the convex mold 17 is lowered when the mold 17 reaches the predetermined position of 6, the saw blade 26 cuts the base material a to a predetermined size. 1
The interior material is molded using various methods.

Therefore, the cutting and shaping of the base material can be done in one step with the convex mold, which has the effect of significantly reducing the number of man-hours and facilitating automation.

As explained above, according to the present invention, the protrusion S having a curved surface such as a semicircular cross section is formed at the upper part of the side edge of the concave mold, thereby smoothing the inflow of the edge part during molding and preventing cracks in the liner. On the other hand, by providing side plates at the top of both sides of the convex shape so that the lower end is lower than the convex surface, and by creating a gap between the concave side surface and the interior material to push the ruts II. In I[, we first removed the deflection of the interior material and then started machiningQ.Moreover, we not only made it possible to press the interior material sequentially from the center to the periphery, but we also maintained an outward tensile force at all times during the process. Holding the parts firmly is a method of performing molding without any formation from beginning to end, which has the effect of completely preventing the occurrence of wrinkles.

In addition, the mold does not have a dual function of holding and movable, but instead has a structure that simply clamps the edges of the interior material, so the number of parts is small and the structure is simple, resulting in a significant reduction in manufacturing costs. It also has the advantage that it doesn't break down because there are no moving parts.

Furthermore, if the side plate part and the protruding part are divided from the mold 9 and the side plate and the protruding plate are bound, the dimensional difference between the lowermost surface of the convex part of the insert and the lower surface of the side plate can be adjusted, so that the 9 part fits the molded shape. The effect is that the conditions for the wrinkle prevention presser can be easily selected.

Furthermore, when the side plate gap adjuster IS2 is provided, the clamping force between the first side plate and the protruding plate can be set to a value suitable for preventing wrinkles.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a conventional mold, Fig. 2 shows a conventional blank holder, and four times are 111Ifi Fig. (
B) The figure is a front view, the 0th figure is a cross-sectional view taken along the line C-C four times, and the third
Figures (A) and (B) Fi are explanatory diagrams showing the action of a conventional blank holder.
This is an explanatory diagram of the situation in which the K material is directly transferred to the molding process. In the fourth case, the li # is set in a concave mold, and in the ninth case (- figure is the situation in which the convex mold descends and holds the peripheral part of the base material, C) The figure is
Figure 245 is an explanatory diagram of the situation in which the convex surface contacts the base material and the bending of the base material is removed and the molding process is started. (Figure 6 shows the situation where the convex mold is lowered to remove the deflection of the lid material, Figure 0 shows the situation where the convex surface is in contact with the base material, and Figure 6 shows the situation when the mold of the present invention is in contact with the base material.) FIG. 7 is a schematic configuration diagram of one embodiment, FIG. 7 is a schematic configuration diagram of a second embodiment of the mold of the present invention, FIG. It is a schematic configuration diagram of a third embodiment of the mold of the present invention. 1...Mold 2a...Concave surface 3a...Convex surface 16.18 ...Concave mold 16a...Protrusion portion 17.21...Protrusion mold 17a...Side plate portion 19...Protrusion plate 19a...Elongated hole 19b for adjusting means ...Long groove 20 serving as adjustment means...Mounting bolt 22 serving as adjustment means...
...Side plate 22a...Elongated hole 23 serving as adjustment means...Mounting bolt 24 serving as adjustment means...
・・Washer a that is a gap adjustment means ・・・・・Paper and cardboard base material a1 ・・Center core a2 ・・・Light t a8 ・・・・・Adhesive material

Claims (1)

[Claims] 10. On a concave shape having protrusions on both upper sides,
A paper film pole base material is placed so that its both edges are in contact with the protruding parts, and the paper film-ball base material is placed on the paper film-ball base while bringing the convex mold having side plate parts relatively close to the concave mold. Both edges of the material are pushed into the gaps formed between the side plate part and the protruding part, and the material is sandwiched between the inner surface of the side plate part and the outer surface of the protruding part to produce a paper/corrugated cardboard base material. A method for forming an interior material made of paper and corrugated cardboard, which is characterized by hot press forming while applying a tensile force to the material. (2) A protruding portion having a curved surface at the upper end is provided on both upper sides of the concave shape, and a side plate portion is provided on both @ portions of the convex shape, the lower end of which is located below the F-most plane of the convex surface, and the convex An interior material made of paper and cardboard, characterized in that a required gap is formed between the outer surface of the protruding part and the inside of the side plate part when the mold is brought relatively close to the concave mold. Molding mold. (3) The protruding part or the side plate is a protruding plate or a side plate that is removable in a concave or convex shape and is equipped with an adjusting means for adjusting the height or length of the protruding part or the side plate. A mold for interior material made of paper and cardboard. 141. A mold for an interior material made of paper-type balls according to claim 3, wherein the IQ plate has a gap adjustment means.