JPH0741667B2 - Continuous production equipment for corrugated sheet material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for continuously producing corrugated sheet material, and more particularly to a corrugated raw sheet material made of thermosetting resin, heat-fusible fiber or the like. The present invention relates to a continuous manufacturing device.

[Prior Art] Conventionally, in this type of device, as shown in Japanese Patent Publication No. 58-19458, the original sheet material is formed in a corrugated shape due to the speed difference of the belt for feeding the original sheet material. That is, the original sheet material is fed backward by the belts located on both the front and rear sides in the feeding direction, and the front and rear belts are provided above and below, respectively, and the speed of the belt located at the rear is the speed of the belt located at the front. The original sheet material is formed into a corrugated shape by making it slower than the above.

[Problems to be Solved by the Invention] However, each of these belts is supported only at both front and rear ends of the belt so as to rotate in the front-rear direction. Therefore, it is easily bent up and down, and when the corrugation is formed on the original sheet material, the corrugation cannot be reliably formed.

Therefore, an object of the first invention of the present application is to provide a continuous manufacturing apparatus for corrugated sheet material capable of reliably forming a clean corrugated sheet material.

It is an object of the second invention to provide a manufacturing apparatus capable of surely forming a raw sheet material into a corrugated pattern having a desired pitch.

It is an object of the third invention to provide a manufacturing apparatus capable of manufacturing a corrugated sheet material in which the corrugated shape is held cleanly and reliably.

It is an object of the fourth invention to provide a manufacturing apparatus capable of forming a clean corrugation on an original sheet material and smoothly performing a corrugated sheet material manufacturing process.

[Means for Solving the Problems] A pair of crease gears that insert the raw sheet material before corrugation and make creases in the raw sheet material, and a pair of guides for guiding the raw sheet material fed out between both gears. There is a wall, and both guide walls are an upper wall and a lower wall facing each other. A hole is formed in the upper wall, and a wave controller for pressing the original sheet material by its own weight is provided in the hole. A corrugation forming zone, a pair of pressing rollers for pushing the raw sheet material into the corrugation forming zone, and a pair of corrugation forming rollers for feeding the raw sheet material from the corrugation forming zone are provided. The delivery speed is
The point is that it is slower than the pushing speed of the original sheet material by both pushing rollers.

In the second invention, a corrugated adjustment zone having a pair of guide walls for guiding the corrugated sheet material sent out from the corrugated zone is provided, and a pitch of corrugated waves is adjusted behind the corrugated adjustment zone. The gist is to provide the waveform adjusting roller of.

The gist of the third invention is to provide a heating zone for fixing the shape of the corrugated sheet material fed from the corrugated adjusting zone by applying heat.

The gist of the fourth invention is to provide a guide convex portion or a guide concave portion for linearly guiding the original sheet material and the corrugated sheet material in the traveling direction in the corrugated formation zone and / or the corrugated adjustment zone.

[Operation] In the first invention of the present application, the raw sheet material is formed in a corrugated shape between the two guide walls of the corrugation zone, and the raw sheet material is pressed downward by the weight of the wave controller when moving in the corrugation zone. It

In the second aspect of the invention, the pitch of the corrugated original sheet material formed in the corrugated zone is adjusted between both guide walls of the corrugated zone.

In the third invention, for example, when the raw sheet material is made of a material whose shape is retained by heating, the corrugated sheet material is formed in the heating zone after the corrugation is formed in the raw sheet material. Is heated, and the portion of the material whose shape is retained by heating is cured, and the corrugated shape of the corrugated sheet material is retained.

In the fourth invention, when the raw sheet material moves in the corrugated zone and when the corrugated sheet material moves in the corrugated adjustment zone, the raw sheet material and the corrugated sheet material move linearly in the traveling direction. Is guided by the guide convex portion or the guide concave portion.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the manufacturing apparatus of this embodiment is provided with a pair of upper and lower fold gears 1 meshed with each other and positively rotatable on the manufacturing start end side (left side in FIG. 1). ing. Each of the gears 1 is provided with a plurality of teeth, and each gear has a pointed tip 1a. Both gears 1
Heaters 2 are provided in close proximity to each other so that the gear 1 can be heated.

As shown in FIG. 1, a pair of upper and lower metal pressing rollers 3 are provided behind the gear 1 (rightward in FIG. 1), and the rotating surfaces of both pressing rollers 3 are substantially in contact with each other. There is. A support member 4 is provided between the two pushing rollers 3 and the gear 1.

As shown in FIGS. 1, 3 and 4, a pair of upper and lower corrugation forming rollers 5 made of a material having a high friction coefficient such as rubber is provided behind the pressing roller 3 and a constant gap is provided between the rollers 5. There are intervals.

A wave forming zone 6 is provided between the wave forming roller 5 and the pushing roller 3. This corrugated zone 6
A pair of upper and lower guide walls 7a, 7b made of metal are provided on the base plate, and the original sheet material A is guided between the guide walls 7a, 7b.

As shown in FIG. 3, the both pushing rollers 3 are the original sheet material A.
The roller has a smooth contact surface with. The roller 3 is close to the front ends N of the guide walls 7a, 7b of the corrugation zone 6,
There is almost no gap between the pushing roller 3 and the guide walls 7a and 7b.

Further, as shown in FIG. 5, three holes 31 are provided in the front portion of the lower guide wall 7b side by side in the width direction, and the holes 31 are provided on the upper surface of the lower guide wall 7b. 3 guide ridges corresponding to 31
32 is stuck. Each of the guide ridges 32 extends in the front-rear direction, and the front end portion 32a is bent downward to form the hole 3
Located within 1. On the other hand, as shown in FIG. 4, three wave controller insertion holes 33 extending in the front-rear direction are formed in the upper guide wall 7a side by side in the width direction. One wave controller 34 is inserted in each wave controller insertion hole 33 so as to be vertically movable. The wave controller 34 has a plate shape extending in the front-rear direction, and its front end portion 34a is curved upward. A weight 35 is fixed to the upper surface of the rear portion of the wave controller 34.

A pair of upper and lower waveform adjusting rollers 8 is provided behind the waveform forming roller 5, and a constant space is provided between the rollers 8. A pair of upper and lower metal guide walls 10a, 10b are provided in the waveform adjusting zone 9 between the waveform adjusting roller 8 and the waveform forming roller 5, and both guide walls 10a, 1
The corrugated sheet material B is guided between 0b.

As shown in FIG. 6, three elongated guide recesses 36 extending in the front-rear direction are formed side by side in the width direction on the guide wall 10b which is the lower wall of the waveform adjusting zone 9.

Behind the waveform adjusting roller 8 is a pair of upper and lower feed rollers.
11 are provided. A pair of upper and lower net conveyors 22 are hung between the upper and lower feed rollers 11 and the waveform adjusting roller 8 via an intermediate roller 11a to form a heating set zone 12.

The net conveyor 22 is made of stainless steel having a thickness of about 1.5 mm and has a mesh of 20 to 30. The vertical distance between the two net conveyors 22 can be adjusted to correspond to the height of the wave of the corrugated sheet material B. Further, the width of the net of the net conveyor 22 is wider than the width of the corrugated sheet material B. In the heating set zone 12, a suction dryer 13 is provided behind the waveform adjusting roller 8 and a cooling device 14 is provided behind the suction dryer 13.

A laminating zone 15 is provided behind the both feed rollers 11. A belt conveyor 16 is provided below the laminating zone 15, and a roller 18 of a fixed sheet material 17 made of polyester spunbonded non-woven fabric is provided above the laminating zone 15. From this roller 18, the fixed sheet material 17 is corrugated sheet material B. It is supplied because it is laminated on top. Further, a heater 19 for laminating and laminating a laminate is provided directly above the corrugated sheet material B in the laminating zone 15.

As shown in FIG. 7, the original sheet material A before being formed into a corrugated shape is, for example, an original shape retaining portion 20 made of a plate-shaped thermosetting spun bond and an original cushion made of a plate-shaped acrylic fiber needle punched nonwoven fabric. The one in which the part 21 and the part 21 are superposed is used.

Next, the operation of the device will be described.

As shown in FIG. 1, the original sheet material A guided from the roller 25 is inserted between both gears 1 and is added by the addendum 1a of the gear 1 heated by the meshing rotation of these gears 1. Is pressed. At this time, the fold Z is surely formed in the place where the pressure is applied, due to the effect of heat effectively (FIG. 2).

Next, the original sheet material A having the folds Z is pushed onto the corrugated zone 6 by the pushing roller 3 after passing through the supporting member 4. Since the feeding speed of the raw sheet material A from the waveform forming zone 6 by the waveform forming roller 5 is controlled to be slower than the pushing speed of the raw sheet material A into the waveform forming zone 6 by the pushing roller 3,
Are folded along the fold line Z in the waveform forming zone 6 to form a waveform.

The pushing roller 3 causes the original sheet material A to form the corrugated zone 6
When being pushed in, there is almost no gap between the pushing roller 3 and the front ends N of the guide walls 7a, 7b, so that the original sheet material A will not be caught therein.

Also, when it is moved in the corrugation zone 6, the original sheet material A
Is guided by the guide ridge 32 on the lower guide wall 7b, so that it does not shift in the width direction. Furthermore, the guide ridge 32
Since the front end portion 32a of the sheet is bent downward,
Does not get caught in the guide ridge 32.

In addition, in the waveform forming zone 6, each wave controller
34 is placed directly on the original sheet material A, and the original weight of the wave controller 34 causes the original sheet material A to be pressed downward.
Therefore, even if the distance between the guide walls 7a and 7b is too large, a corrugated waveform having a uniform height is formed.

Further, the raw sheet material A is sent to the corrugated adjustment zone 9 and formed into the corrugated sheet material B. In this case, if the feeding speed of the corrugated sheet material B from the waveform adjusting zone 9 by the corrugating roller 8 is made slower than the feeding speed of the original sheet material A from the corrugating roller 6 by the corrugating roller 5,
The corrugated sheet material B has a smaller wave pitch X (see FIG. 8). On the contrary, if the feeding speed from the waveform adjusting zone 9 is faster than the feeding speed from the waveform forming zone 9, the corrugated sheet material B has a larger pitch X of the waveform.

When the corrugated sheet material B is moved in the corrugated adjustment zone 9, the corrugated sheet material B is guided by the guide recesses 36 on the lower guide wall 10b, so that it does not shift in the width direction.

Next, the corrugated sheet material B is sent to the heating set zone 12,
The net conveyor 22 is brought into contact with both sides of the corrugated sheet material B, and is moved backward in the heating set zone 12 by the net conveyor 22. At this time, the feeding speed of the corrugated sheet material B by the feed roller 11 and the feeding speed of the corrugated adjusting roller 8 are the same, and the corrugated sheet material B is heated by the suction dryer 13 while moving in the heating set zone 12. About 200
Is added to maintain the original shape of the corrugated sheet material B. After that, the corrugated sheet material B is rapidly cooled by the cooling device 14.

Finally, the corrugated sheet material B is sent to the laminating zone 15 and moved backward in the laminating zone 15 by the belt conveyor 16. Meanwhile, the fixed sheet material 17 is superposed on the corrugated sheet material B so that the fixed sheet material 17 is in contact with the apex R1 of the wave R (see FIG. 8), and the fixed sheet material 17 is heated by the heater 19 so that both of them B, 17 is welded.

As shown in FIG. 8, the product manufactured in this way is
The shape-retaining portion 23 made of a thermosetting spun bond and the cushion portion 24 made of an acrylic fiber needle punched nonwoven fabric are bent in an arch-shaped waveform in a state of being overlapped with each other. A fixed sheet material 17 is superposed on the shape-holding portion 23 side and welded to the apex R1 of the wave R of the waveform of the shape-holding portion 23.

This product can be used as soundproofing material, heat insulating material, etc.

By using the manufacturing apparatus of this embodiment, the guide walls 7a, 7b, 10 to which the corrugation forming zone 6 and the corrugation adjusting zone 9 are fixed, respectively.
Since it is composed of a and 10b, it is possible to surely form the original sheet material in the waveform of the desired pitch as compared with the case of being composed of the belt as in the prior art.

In addition, when forming the original sheet material A into a corrugation with a desired pitch, a two-step process of the corrugation forming zone 6 and the corrugation adjusting zone 9 is provided. Absent.

Further, by using the manufacturing apparatus of this embodiment, the corrugated sheet material B can be manufactured smoothly.

Further, by using a thermosetting spun bond as a raw material for the raw sheet material A and providing the heating set zone 12 in the step after the raw sheet material A is formed into a corrugated shape, the corrugated sheet B is cured by heat. The thermosetting spun bond thus produced functions as the shape-retaining portion 23, so that the corrugated shape of the corrugated sheet material B can be held cleanly and reliably. In addition, the suction dryer 13 is used to circulate the hot air, and the porous net conveyor 22 is used, so that the thermal efficiency is good.

The raw sheet material used in the present invention is made of polyester and polypropylene, and after the corrugation is formed, the melting point of polypropylene (about 17
If the corrugated sheet material B is heated at a temperature not lower than 0 degree and not higher than the melting point of polyester (about 225 degrees), polypropylene will be melted. Then, the polypropylene is cooled again to be cured, and the corrugated shape of the corrugated sheet material B is retained.

The present invention may be embodied as follows.

(A) Insert the wave controller 34 only into the wave controller insertion hole 33 at the center in the width direction. Alternatively, it is inserted only into the insertion holes 33 at both ends.

(B) The weight 35 of the wave controller 34 is used as the original sheet material A
If the original sheet material is heavy, the weight is light, and if the original sheet material is heavy, the weight is heavy.

(C) Only one of the guide protrusion 32 of the waveform forming zone 6 and the guide recess 36 of the waveform adjusting zone 9 is formed.

(D) Paper or other film-like material is used as the fixing sheet material 17.

(E) When paper is used as the fixing sheet material 17, the paper and the adhesive sheet are laminated on the corrugated sheet material B so that the adhesive sheet is interposed between the corrugated sheet material B and the paper.

(F) Instead of guiding the original sheet material A from the roller 25, the manufacturing process of the original sheet material A and the corrugated sheet material manufacturing apparatus of the present invention are directly connected.

[Effects of the Invention] As described in detail above, in the first invention, the original sheet material can be surely formed into a corrugated shape in the corrugated zone, and the height is made uniform by the function of the wave controller. It can be formed into a corrugated shape.

According to the second aspect of the invention, it is possible to reliably form the original sheet material into a corrugated pattern having a desired pitch.

In the third aspect of the present invention, for example, when the raw sheet material has a material whose shape is maintained by being heated, the corrugated sheet material in which the corrugated shape is held cleanly and reliably can be manufactured.

In the fourth invention, since the original sheet material and the corrugated sheet material move linearly in the traveling direction in the corrugated formation zone and the corrugated adjustment zone, it is possible to form a clean corrugation on the original sheet material and to manufacture the corrugated sheet material. The process can be performed smoothly.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a continuous production apparatus for corrugated sheet material according to an embodiment of the present invention, FIG. 2 is a schematic front view of a crease gear, and FIG. 3 is a pushing roller and a front end portion of a corrugation forming zone. 4 is a partial perspective view showing a corrugation zone, FIG. 5 is a perspective view showing a lower guide wall of the corrugation zone, and FIG. 6 is a lower guide wall of the corrugation adjustment zone. FIG. 7 is a perspective view, FIG. 7 is a sectional view showing a raw sheet material, and FIG. 8 is a sectional view showing a corrugated sheet material. Creasing gear 1, pushing roller 3, corrugating roller 5, corrugating zone 6, upper guide wall 7a, lower guide wall 7b,
Waveform adjustment zone 9, upper guide wall 10a, lower guide wall 10b, heating set zone 12, guide ridge 32, wave controller 34, guide recess 36, original sheet material A, corrugated sheet material B,
Wave R, pitch X.

Claims (4)

[Claims] 1. A pair of crease gears (1) for inserting an original sheet material (A) before corrugation and making a crease in the original sheet material (A), and an original sheet material (A) sent out between both gears (1). Has a pair of guide walls (7a, 7b) for guiding the upper and lower walls (7a, 7b) facing each other.
b) a waveform in which a hole (33) is formed in the upper wall (7a) and a wave controller (34) for pressing the original sheet material (A) by its own weight is provided in the hole (33) A forming zone (6), a pair of pushing rollers (3) for pushing the raw sheet material (A) into the corrugated zone (6), and a pair of feeding the raw sheet material (A) from the corrugated zone (6) And a corrugation forming roller (5) for feeding the original sheet material (A) by the corrugating rollers (5) is slower than the pushing speed of the raw sheet (A) by the pressing rollers (3). The continuous production equipment of the characteristic corrugated sheet material. 2. A pair of guide walls (10a, 10b) for guiding the corrugated sheet material (B) sent out from the corrugated zone (6).
And a waveform adjusting roller (8) for adjusting the pitch (X) of the wave (R) of the waveform is provided behind the waveform adjusting zone (9). The continuous production apparatus for corrugated sheet material according to claim 1. 3. A heating zone (12) for fixing the shape of the corrugated sheet material (B) fed from the corrugated adjusting zone (9) by applying heat to the corrugated sheet material (B). Continuous production equipment for corrugated sheet materials. 4. A guide projection () for linearly guiding the original sheet material (A) and the corrugated sheet material (B) in the corrugated formation zone (6) and / or the corrugated adjustment zone (9) in the traveling direction. 32. The corrugated sheet material continuous production apparatus according to claim 2, further comprising a guide recess (36).