JP2023133770A - Sheet manufacturing method and sheet manufacturing apparatus - Google Patents

Abstract

To provide a sheet manufacturing method and a sheet manufacturing apparatus which can appropriately manufacture a sheet.SOLUTION: A sheet manufacturing method for punching a sheet S1 from a sheet base material S using a sheet manufacturing apparatus 1, and manufacturing a sheet includes a set step of setting the sheet base material S and a punching die 4 on a conveyance table 11 in a state where the sheet base material S and the punching die 4 overlap each other, and a press step of inserting the sheet base material S and the punching die 4 between two rollers 21 and 22 and moving the sheet base material S and the punching die 4, and performing pressing, wherein the sheet manufacturing apparatus 1 has a pressing member 3 for suppressing jumping-up of the sheet base material S at the time of pressing, at a position which is one or both of the upstream side and the downstream side of a press roller 2 and is above the sheet base material S to be conveyed.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sheet manufacturing method and a sheet manufacturing apparatus.

Conventionally, as described in Japanese Patent Application Laid-Open No. 11-034184, a sheet manufacturing method and a sheet manufacturing apparatus have been used, for example, by inserting a cutting die and a sheet to be processed between two rollers facing each other vertically. There are known devices that punch out sheets according to the shape of a cutting die.

Japanese Patent Application Publication No. 11-034184

In such a manufacturing method and manufacturing apparatus, there is a possibility that the work sheet cannot be punched out appropriately. For example, when a processed sheet is inserted between rollers, the processed sheet is pressed by the rollers, but the portions of the processed sheet before and behind the rollers jump up. This makes it difficult to punch out the processed sheet into a desired shape. For example, as shown in FIG. 6, the sheet material 101 punched from the workpiece sheet 100 may be misaligned or stretched with respect to the cutting die 102, making it impossible to properly manufacture the sheet material 101. .

Therefore, it is desired to develop a sheet manufacturing method and a sheet manufacturing apparatus that can appropriately manufacture sheets.

Therefore, in a sheet manufacturing method according to one aspect of the present disclosure, in a sheet manufacturing method in which a sheet is manufactured by punching a sheet from a sheet base material using a roller press machine, the sheet base material and the cutting die are overlapped, and the sheet base material and the cutting die are stacked. and a pressing step in which the sheet base material and the cutting die are inserted between two rollers of a roller press machine and pressed. A holding member is provided at one or both of the downstream positions above the sheet base material to be transferred, which suppresses the sheet base material or the cutting die from jumping up during pressing. According to this sheet manufacturing method, since the roller press machine has the pressing member, it is possible to suppress the sheet base material or the cutting die from jumping up before and after the roller during pressing. Thereby, the sheet can be appropriately punched out from the sheet base material using the cutting die.

Further, in the sheet manufacturing method according to one aspect of the present disclosure, the pressing member may be a rotatable roller. In this case, by configuring the holding member as a rotatable roller, the sheet base material or the cutting die that is about to spring up can be smoothly guided in the transport direction by the holding member.

Further, in the sheet manufacturing method according to one aspect of the present disclosure, the pressing member may be provided so as to be movable in the vertical direction. In this case, by providing the presser member so as to be movable in the vertical direction, the presser member can suppress the sheet base material or the cutting die from jumping up, and reduce excessive pressing of the sheet base material. Furthermore, in the sheet manufacturing method according to one aspect of the present disclosure, the pressing member may be provided so as to be movable in a direction parallel to the transport direction of the sheet base material. In this case, since the presser member is provided so as to be movable in the transport direction, the presser member can accurately suppress the sheet base material or the cutting die from jumping up.

A sheet manufacturing apparatus according to one aspect of the present disclosure is a sheet manufacturing apparatus that manufactures a sheet by punching a sheet from a sheet base material, and includes a press roller that sandwiches and moves a sheet base material and a cutting die in an overlapping state; A pressing member provided above the moving sheet base material at one or both of the upstream side and downstream side of the press member to suppress the sheet base material or the cutting die from jumping up during pressing. . According to this sheet manufacturing apparatus, the pressing member is provided at one or both of the upstream and downstream sides of the press roller and above the moving sheet base material, so that the sheet base material can be pressed during pressing. Alternatively, the cutting die is prevented from jumping upward. Thereby, the sheet can be appropriately punched out from the sheet base material using the cutting die.

According to the invention according to the present disclosure, a sheet can be appropriately manufactured.

1 is a vertical cross-sectional view showing an overview of a sheet manufacturing apparatus according to an embodiment of the present disclosure. FIG. 2 is a plan view of the sheet manufacturing apparatus shown in FIG. 1; FIG. 2 is an explanatory diagram of the arrangement of sheet materials in the sheet manufacturing method and sheet manufacturing apparatus according to the embodiment. FIG. 2 is an explanatory diagram of background technology. FIG. 6 is an explanatory diagram of a modified example of the sheet manufacturing method and sheet manufacturing apparatus according to the embodiment. FIG. 2 is an explanatory diagram of background technology.

Embodiments of the present disclosure will be described below with reference to the drawings. In addition, in the description of the drawings, the same elements are given the same reference numerals, and overlapping description will be omitted.

FIG. 1 is a vertical sectional view showing an outline of the configuration of a sheet manufacturing apparatus. FIG. 2 is a plan view of the sheet manufacturing apparatus.

As shown in FIG. 1, the sheet manufacturing apparatus 1 is a roller press machine that manufactures the sheet S1 by punching out the sheet S1 from the sheet base material S using a press. The sheet manufacturing apparatus 1 includes a press roller 2 and a pressing member 3. The press roller 2 has two rollers 21 and 22, and is a press mechanism in which the sheet base material S and the cutting die 4 are sandwiched between the rollers 21 and 22 in an overlapping state and moved.

The press roller 2 is provided on the conveyance table 11. The conveyance table 11 is a base member for manufacturing the sheet S1, and its upper surface serves as a conveyance path for the sheet base material S and the sheet S1. The conveying table 11 is configured to include, for example, a plate body whose longitudinal direction is the conveying direction T of the sheet base material S and the sheet S1. The rollers 21 and 22 of the press roller 2 are formed of a cylindrical body or a cylindrical body, and are provided rotatably about an axis in a horizontal direction and perpendicular to the transport direction T on the transport table 11. The rollers 21 and 22 of the press roller 2 are arranged one above the other.

The roller 21 is a drive roller, and is configured to be rotationally driven by being given rotational force by driving a motor (not shown). This roller 21 is provided inside the conveyance table 11, and is installed so that the upper part of the outer peripheral surface is at the same position or approximately the same position as the upper surface of the conveyance table 11. Thereby, the sheet base material S and the like on the transport table 11 can be transported along the transport direction T by rotationally driving the rollers 21 .

The rollers 22 are provided above the rollers 21 and spaced apart from the rollers 21 so that the sheet base material S or the like can be inserted between the rollers 21 . The roller 22 may be configured to be movable up and down so that the distance from the roller 21 can be adjusted depending on the thickness of the sheet base material S and the like.

The pressing member 3 is a member that suppresses the sheet base material S from jumping up during pressing, and is located at the upstream and downstream sides of the press roller 2 in the transport direction T, and at a position above the sheet base material S to be transported. It is set in. The presser member 3 is, for example, a cylinder or a cylindrical body, and is configured to be rotatable as a presser roller. In this case, by configuring the presser member 3 as a presser roller, the sheet base material S that is about to jump up can be smoothly guided in the transport direction T.

As shown in FIG. 2, for example, the pressing member 3 is rotatably supported by a frame 23 that rotatably supports the roller 22. As shown in FIG. In this case, the presser member 3 is a fixed member, but may be provided movably. For example, the presser member 3 is provided so as to be movable up and down within a predetermined range with respect to the frame 23. Thereby, the pressing member 3 can suppress excessive pressing of the sheet base material S while suppressing the sheet base material S from jumping up. Further, for example, the holding member 3 is provided so as to be movable in the transfer direction T with respect to the frame 23. That is, the holding member 3 is movable in a direction parallel to the transport direction T, and is provided so as to be movable away from or toward the roller 22. Thereby, by moving the pressing member 3 in a direction parallel to the transport direction T and adjusting the distance from the roller 22, it is possible to accurately suppress the sheet base material S from jumping up. For example, by moving and arranging the pressing member 3 in a region where the sheet base material S rises before and after the press roller 2 during pressing as shown in FIG. 4, it is possible to accurately suppress the sheet base material S from jumping up. Note that the support structure for the presser member 3 may be any support structure as long as it can move and support the presser member 3.

The pressing member 3 may have any configuration as long as it can suppress the sheet base material S from jumping up during pressing, and may be formed smaller than the roller 22, for example, and may be smaller than half the size of the roller 22. The distance between the roller 22 and the pressing member 3 is a distance that can appropriately suppress the sheet base material S from jumping up during pressing, and is appropriately set according to the thickness, material, etc. of the sheet base material S.

In FIG. 1, the sheet base material S and the cutting die 4 are pressed in an overlapping state. The sheet base material S is a workpiece and is a long sheet material. For example, a fiber sheet is used as the sheet base material S. Specifically, the sheet base material S used is one in which fibers are arranged in a predetermined direction and impregnated with resin. The sheet base material S may be one in which a plurality of fiber sheets are laminated.

The cutting die 4 is a die for punching out the sheet S1 from the sheet base material S, and is formed to have the same or approximately the same width as the sheet base material S. The cutting die 4 is formed with a blade 41 that protrudes from the surface. The blade 41 is formed as a protrusion with a shape corresponding to the outer shape of the sheet S1. The protruding length of the blade 41 is, for example, longer than the thickness of the sheet base material S. The sheet S1 is punched out according to the shape of the blade 42 by pressing the cutting die 4 and the sheet base material S in the thickness direction in a state where the cutting die 4 and the sheet base material S are overlapped.

Next, the operation of the sheet manufacturing apparatus 1 and the sheet manufacturing method according to this embodiment will be explained.

First, as shown in FIG. 3, a setting process is performed, and the sheet base material S and the cutting die 4 are set in the sheet manufacturing apparatus 1 in an overlapping state. That is, the sheet base material S and the cutting die 4 are set on the conveyance table 11 of the sheet manufacturing apparatus 1 in an overlapping manner. At this time, for example, the elastic body 51 is set on the cutting die 4, the sheet base material S is placed on the elastic body 51, and the cover material 52 is set on top of the sheet base material S in this order. The elastic body 51 is, for example, an elastically deformable plate-like member such as a sponge. The cover material 52 is a plate-shaped member made of, for example, resin. The elastic body 51 is a member for allowing deformation of the laminate including the sheet base material S and the cutting die 4 during pressing. The cover material 52 is a member that prevents the blade 41 of the cutting die 4 from coming into direct contact with the peripheral surface of the roller 22. Note that in this embodiment, the cutting die 4, the elastic body 51, the sheet base material S, and the cover material 52 are stacked and pressed, but other members are stacked and the cutting die 4, the elastic body 51, and the sheet base material S are stacked. In some cases, a laminate including the material S and the cover material 52 is pressed.

Next, a pressing process is performed, the press roller 2 is operated, and the roller 21 is rotationally driven. Then, as shown in FIG. 1, the sheet base material S and the cutting die 4 are inserted between the rollers 22 and 21, and the sheet base material S is pressed. That is, a pressing force is applied to the sheet base material S and the cutting die 4 in the thickness direction. As a result, the blade 41 of the cutting die 4 penetrates the sheet base material S in the thickness direction, and the sheet S1 is punched out from the sheet base material S.

In this pressing process, the sheet base material S pressed by the press roller 2 is compressed in the thickness direction at the positions of the rollers 21 and 22, and therefore, springing stress is generated at positions before and after the rollers 21 and 22. At this time, since the pressing member 3 is provided at the upstream and downstream positions of the press roller 2, the sheet base material S is prevented from jumping up. That is, the sheet base material S, the cover material 52, and the elastic body 51 are prevented from jumping up, and the sheet S1 can be punched into a desired shape according to the shape of the blade 41.

On the other hand, if the pressing member 3 is not provided, it is difficult to punch out the sheet S1 into a desired shape. As shown in FIG. 4, if the pressing member 3 is not provided, the sheet base material S, the cover material 52, and the elastic body 51 will jump up at the front and rear positions of the press roller 2, and as shown in FIG. Misalignment of S1 (sheet material 101) and elongation of its shape in the transport direction are likely to occur.

This is considered to be caused by the following phenomenon. By transporting the sheet base material S etc. to the downstream side while applying local deformation by the press roller 2, the elastic body 51 is stretched and stretched upstream. After passing the press roller 2, the elastic body 51 returns to its original elongation, but at that time, a force that pulls the sheet base material S toward the downstream side acts, and the sheet base material S is transported downstream. When the sheet base material S has been transported to a certain extent, the leading end side of the cover material 52 located downstream of the press roller 2 hangs down, and assumes a shape that follows the cutting die 4. Therefore, the surplus portion of the sheet S1 and the like transferred downstream from the press roller 2 accumulates in a wavy shape between the cover material 52 and the elastic body 51 at the midpoint on the downstream side from the press roller 2. At the timing when all of the cutting die 4 has passed the press roller 2, the force pressing the cutting die 4 up and down is removed, and the cover material 52 follows the elastic body 51 over the entire surface. Therefore, the undulations of the sheet S1 that have accumulated between the cover material 52 and the elastic body 51 are forced to be flattened and pushed out to the upstream side. Due to such a phenomenon, as shown in FIG. 6, the sheet S1 (sheet material 101) on the downstream side causes a shift toward the downstream side, and the sheet S1 (sheet material 101) on the upstream side causes a shift toward the upstream side.

In order to eliminate such problems, in the sheet manufacturing apparatus and sheet manufacturing method according to the present embodiment, by using the presser member 3, it is possible to suppress the displacement and elongation of the sheet S1, and to manufacture the sheet S1 appropriately. become.

As explained above, according to the sheet manufacturing apparatus 1 and the sheet manufacturing method according to the present embodiment, by manufacturing the sheet S1 with the presser member 3 provided, the sheet base material S can be prevented from jumping upward during pressing. suppressed. Thereby, the sheet S1 can be appropriately punched out from the sheet base material S by the cutting die 4, and the sheet S1 can be appropriately manufactured.

Further, in the sheet manufacturing apparatus 1 and the sheet manufacturing method according to the present embodiment, the pressing member 3 is configured as a rotatable roller. Thereby, the sheet base material S that is about to jump up can be smoothly guided in the transport direction T by the holding member. Therefore, the sheet S1 can be manufactured smoothly.

Further, in the sheet manufacturing apparatus 1 and the sheet manufacturing method according to the present embodiment, the pressing member 3 is provided so as to be movable in the vertical direction within a predetermined range. Thereby, excessive pressing of the sheet base material S can be reduced while suppressing the sheet base material S from jumping up by the presser member 3. Therefore, the sheet S1 can be appropriately manufactured. Further, in the sheet manufacturing apparatus 1 and the sheet manufacturing method according to the present embodiment, the pressing member 3 is provided movably in the transport direction T. Thereby, it is possible to move the pressing member 3 in a direction parallel to the transport direction T and to accurately suppress the sheet base material S from jumping up. As shown in FIG. 4, the sheet base material S, the cover material 52, and the elastic body 51 try to jump up during pressing, but this jump is caused by the ease with which the sheet base material S, the cover material 52, and the elastic body 5 bend. It varies depending on the material of the press roller 2 and the pressing force of the press roller 2. Therefore, by moving and installing the presser member 3 to an appropriate position depending on the state of the upheaval, it is possible to accurately suppress the upheaval of the sheet base material S.

Note that although the sheet manufacturing apparatus 1 and the sheet manufacturing method according to the embodiment of the present disclosure have been described above, the sheet manufacturing apparatus and the sheet manufacturing method of the present disclosure are not limited to the embodiments described above. The present disclosure can take various modifications without departing from the gist of the claims.

For example, in the embodiment described above, the presser member 3 is provided as a roller, but it may have a form or shape other than a roller. Specifically, as shown in FIG. 5, the holding member 3A may be configured in a plate shape. Even in this case, the pressing member 3A can prevent the sheet base material S from jumping upward during pressing, and the sheet S1 can be appropriately manufactured. Further, the holding member 3A may have a curved shape so as to protrude downward. Thereby, the frictional resistance with the cover material 52 can be reduced and the sheet base material S can be guided smoothly.

In addition, in the embodiment described above, the case where the presser member 3 is provided on both the upstream side and the downstream side of the press roller 2 has been described, but the presser member 3 is provided on either the upstream side or the downstream side of the press roller 2. It may be provided. In this case, compared to the case where the pressing member 3 is not provided, it is possible to suppress the sheet base material S from jumping upward during pressing, and it is possible to appropriately manufacture the sheet S1.

Further, in the above-described embodiment, the case where the sheet base material S is stacked on the cutting die 4 and pressing is performed is explained, but the cutting die 4 may be stacked on the sheet base material S and pressing is performed. . For example, the sheet base material S is stacked on the cover material 52, the elastic body 51 is stacked on top of the sheet base material S, the cutting die 4 is stacked and set on top of the elastic body 51, and the sheet base material S and the punching die are set on top of the elastic body 51. The sheet S1 may be manufactured by pressing a laminate including the mold 4. In this case, the pressing member 3 prevents the cutting die 4 from jumping up during pressing. Thereby, the sheet S1 can be appropriately punched out from the sheet base material S by the cutting die 4, and the sheet S1 can be appropriately manufactured.

1 Sheet manufacturing device 2 Press roller 3 Pressing member 3A Pressing member 4 Cutting die 11 Conveying table 21 Roller 22 Roller 23 Frame 41 Blade 51 Elastic body 52 Cover material S Sheet base material S1 Sheet T Transfer direction

Claims (5)

In a sheet manufacturing method in which the sheet is manufactured by punching the sheet from a sheet base material using a roller press machine,
a setting step of setting the sheet base material and the cutting die in a stacked state in the roller press machine;
a pressing step of performing pressing by inserting and moving the sheet base material and the cutting die between two rollers of the roller press machine,
The roller press machine prevents the sheet base material or the cutting die from bouncing up during pressing at one or both of the upstream and downstream positions of the roller and above the conveyed sheet base material. It has a pressing member that suppresses the
Seat manufacturing method. The pressing member is a rotatable roller.
The sheet manufacturing method according to claim 1. The pressing member is provided so as to be movable in the vertical direction.
The sheet manufacturing method according to claim 1 or 2. The pressing member is provided so as to be movable in a direction parallel to the transport direction of the sheet base material.
The sheet manufacturing method according to any one of claims 1 to 3. In a sheet manufacturing device that manufactures the sheet by punching the sheet from a sheet base material,
a press roller that sandwiches and moves the sheet base material and the cutting die in an overlapping state;
A pressing member that is provided at one or both of the upstream and downstream positions of the press roller and above the moving sheet base material, and suppresses the sheet base material or the cutting die from jumping up during pressing. and,
Sheet manufacturing equipment.

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