Sheet manufacturing method and sheet manufacturing apparatus

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

[Technical Field]

[0001] The present invention relates to a sheet manufacturing method and a sheet manufacturing apparatus. [Background technology]

[0002] Conventionally, as a sheet manufacturing method and sheet manufacturing apparatus, for example, as described in Japanese Patent Application Laid-Open No. 11-034184, a punching die and a sheet to be processed are inserted between two rollers facing each other vertically, and the sheet to be processed is punched out according to the shape of the punching die. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-034184 Summary of the Invention [Problem to be solved by the invention]

[0004] Such a manufacturing method and manufacturing apparatus may not be able to properly punch out the workpiece. For example, when the workpiece is inserted between rollers, the rollers press the workpiece, but the portions of the workpiece before and after the rollers bounce up. This makes it difficult to punch out the workpiece into the desired shape. For example, as shown in FIG. 6, the sheet material 101 punched out of the workpiece sheet 100 may shift or stretch relative to the cutting die 102 of the punching die, resulting in an inappropriate production of the sheet material 101.

[0005] Therefore, there is a demand for the development of a sheet manufacturing method and a sheet manufacturing apparatus that can manufacture appropriate sheets. [Means for solving the problem]

[0006] Therefore, a sheet manufacturing method according to one aspect of the present disclosure is a sheet manufacturing method for manufacturing a sheet by punching a sheet from a sheet substrate using a roller press machine, and includes a setting step of setting the sheet substrate and a punching die in a stacked state in the roller press machine, and a pressing step of inserting the sheet substrate and the punching die between two rollers of the roller press machine and moving them to press, wherein the roller press machine has a pressure member located on either or both of the upstream and downstream sides of the rollers, above the transferred sheet substrate, that suppresses the sheet substrate or the punching die from bouncing up during pressing. According to this sheet manufacturing method, the roller press machine has a pressure member, which suppresses the sheet substrate or the punching die from bouncing up in front of and behind the rollers during pressing. This allows the sheet to be properly punched out of the sheet substrate by the punching die.

[0007] In the sheet manufacturing method according to an aspect of the present disclosure, the presser member may be a rotatable roller. In this case, the presser member is configured as a rotatable roller, so that the sheet base material or the cutting die that tends to jump up can be smoothly guided in the conveyance direction by the presser member.

[0008] Furthermore, in the sheet manufacturing method according to an aspect of the present disclosure, the pressure member may be provided so as to be movable in the vertical direction. In this case, by providing the pressure member so as to be movable in the vertical direction, the pressure member can suppress the sheet substrate or the cutting die from bouncing up while reducing excessive pressing down of the sheet substrate. Furthermore, in the sheet manufacturing method according to an aspect of the present disclosure, the pressure member may be provided so as to be movable in a direction parallel to the transport direction of the sheet substrate. In this case, by providing the pressure member so as to be movable in the transport direction, the pressure member can accurately suppress the sheet substrate or the cutting die from bouncing up.

[0009] A sheet manufacturing apparatus according to one aspect of the present disclosure is a sheet manufacturing apparatus that produces a sheet by punching a sheet from a sheet substrate, and is configured to include a press roller that sandwiches and moves the sheet substrate and a punching die in an overlapping state, and a pressure member that is provided upstream and / or downstream of the press roller and above the moving sheet substrate, and that suppresses the sheet substrate or the punching die from bouncing up during pressing. According to this sheet manufacturing apparatus, by providing the pressure member upstream and / or downstream of the press roller and above the moving sheet substrate, the sheet substrate or the punching die is suppressed from bouncing up during pressing. This allows the sheet to be properly punched out of the sheet substrate by the punching die. [Effects of the Invention]

[0010] According to the invention of the present disclosure, the sheet can be appropriately manufactured. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a vertical cross-sectional view illustrating an overview of a sheet manufacturing apparatus according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a plan view of the sheet manufacturing apparatus of FIG. [Figure 3] 1A and 1B are explanatory diagrams illustrating the arrangement of sheet materials in a sheet manufacturing method and a sheet manufacturing apparatus according to an embodiment. [Figure 4] FIG. 1 is an explanatory diagram of the background art. [Figure 5] 10A and 10B are explanatory diagrams illustrating a modified example of the sheet manufacturing method and the sheet manufacturing apparatus according to the embodiment. [Figure 6] FIG. 1 is an explanatory diagram of the background art. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicated description will be omitted.

[0013] Fig. 1 is a vertical cross-sectional view showing an outline of the configuration of a sheet manufacturing apparatus, and Fig. 2 is a plan view of the sheet manufacturing apparatus.

[0014] As shown in Fig. 1, the sheet manufacturing apparatus 1 is a roller press machine that uses a press to punch out a sheet S1 from a sheet substrate S to manufacture the sheet S1. 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 that sandwiches and moves the sheet substrate S and a punching die 4 in an overlapping state between the rollers 21 and 22.

[0015] The press roller 2 is provided on a conveying table 11. The conveying table 11 is a platform member for manufacturing the sheet S1, and its upper surface serves as a transport path for the sheet substrate S and sheet S1. The conveying table 11 is configured, for example, to include a plate body whose longitudinal direction is the transport direction T of the sheet substrate S and sheet S1. The rollers 21 and 22 of the press roller 2 are configured as cylindrical or cylindrical bodies and are provided so as to be rotatable about an axis that is horizontal and perpendicular to the transport direction T on the conveying table 11. The rollers 21 and 22 of the press roller 2 are arranged side by side one above the other.

[0016] The roller 21 is a drive roller, and is configured to be rotationally driven by a rotational force applied by driving a motor (not shown). The roller 21 is provided inside the conveying table 11, and is installed so that the upper part of the outer circumferential surface is at the same position or approximately the same position as the upper surface of the conveying table 11. As a result, the sheet substrate S or the like on the conveying table 11 can be conveyed along the conveying direction T by the rotational drive of the roller 21.

[0017] Roller 22 is provided above roller 21 and is spaced apart from roller 21 so that the sheet substrate S or the like can be inserted between roller 21. Roller 22 may be configured to be able to move up and down so that the distance between roller 22 and roller 21 can be adjusted depending on the thickness of the sheet substrate S or the like.

[0018] The pressure members 3 are members that suppress the sheet substrate S from bouncing up during pressing, and are provided on the upstream and downstream sides of the transfer direction T of the press roller 2, above the transferred sheet substrate S. The pressure members 3 are, for example, cylindrical or columnar bodies, and are configured to be rotatable as pressure rollers. In this case, by configuring the pressure members 3 as pressure rollers, the sheet substrate S that tends to bounc up can be smoothly guided in the transfer direction T.

[0019] As shown in FIG. 2 , for example, the pressure member 3 is rotatably supported by a frame 23 that rotatably supports the roller 22. In this case, the pressure member 3 is a fixed member, but it may also be provided movably. For example, the pressure member 3 is provided movably up and down relative to the frame 23 within a predetermined range. This allows the pressure member 3 to suppress the sheet substrate S from bouncing up while reducing excessive pressing of the sheet substrate S. Also, for example, the pressure member 3 is provided movably in the transfer direction T relative to the frame 23. That is, the pressure member 3 is provided movably in a direction parallel to the transfer direction T so as to move away from or approach the roller 22. This allows the pressure member 3 to move in a direction parallel to the transfer direction T to adjust the distance from the roller 22, thereby accurately suppressing the bouncing up of the sheet substrate S. For example, as shown in FIG. 4 , by moving and positioning the pressure member 3 in the area where the sheet substrate S bulges in front of and behind the press roller 2 during pressing, the bouncing up of the sheet substrate S can be accurately suppressed. The support structure for the pressing member 3 may be any support structure as long as it can move and support the pressing member 3.

[0020] The pressing member 3 may have any configuration as long as it can suppress the jumping up of the sheet substrate S during pressing, and may be formed smaller than the roller 22, for example, to be less 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 jumping up of the sheet substrate S during pressing, and is set appropriately depending on the thickness, material, etc. of the sheet substrate S.

[0021] In FIG. 1, the sheet substrate S and the die 4 are pressed in a stacked state. The sheet substrate S is a workpiece, and is a long sheet material. For example, a fiber sheet is used as this sheet substrate S. Specifically, the sheet substrate S is one in which fibers are arranged in a predetermined direction and are impregnated with resin. The sheet substrate S may also be one in which multiple fiber sheets are stacked together.

[0022] The die 4 is a die body for punching the sheet S1 out of the sheet substrate S, and is formed with the same or approximately the same width as the sheet substrate S. The die 4 is formed with a blade 41 that protrudes from the surface. The blade 41 is formed as a protrusion in a shape that corresponds to the outer shape of the sheet S1. The protruding length of the blade 41 is formed to be longer than the thickness of the sheet substrate S, for example. With the die 4 and the sheet substrate S stacked on top of each other, the die 4 and the sheet substrate S are pressed in the thickness direction, whereby the sheet S1 is punched out according to the shape of the blade 42.

[0023] Next, the operation of the sheet manufacturing apparatus 1 and the sheet manufacturing method according to this embodiment will be described.

[0024] First, as shown in FIG. 3 , a setting step is performed, in which the sheet substrate S and the die 4 are set in a stacked state in the sheet manufacturing apparatus 1. That is, the sheet substrate S and the die 4 are set in a stacked state on the conveying table 11 of the sheet manufacturing apparatus 1. At this time, for example, an elastic body 51 is set on the die 4, the sheet substrate S is set on the elastic body 51, and a cover material 52 is set on the sheet substrate S in this order. The elastic body 51 is an elastically deformable plate-like member such as sponge. The cover material 52 is a plate-like member made of, for example, resin. The elastic body 51 is a member that allows deformation of a laminate including the sheet substrate S and the die 4 during pressing. The cover material 52 is a member that prevents the blade 41 of the die 4 from directly contacting the circumferential surface of the roller 22. Note that in this embodiment, the die 4, the elastic body 51, the sheet substrate S, and the cover material 52 are stacked and pressed, but there is also a case where other members are stacked and a laminate including the die 4, the elastic body 51, the sheet substrate S, and the cover material 52 is pressed.

[0025] Next, the pressing step is performed, in which the press roller 2 is operated and the roller 21 is driven to rotate. Then, as shown in FIG. 1, the sheet substrate S and the punching die 4 are inserted between the roller 22 and the roller 21, and the sheet substrate S is pressed. That is, a pressing force is applied to the sheet substrate S and the punching die 4 in the thickness direction. As a result, the blade 41 of the punching die 4 penetrates the sheet substrate S in the thickness direction, and the sheet S1 is punched out of the sheet substrate S.

[0026] In this pressing process, the sheet substrate S pressed by the press rollers 2 is compressed in the thickness direction at the positions of rollers 21 and 22, and a springing stress is generated at positions before and after the rollers. At this time, the sheet substrate S is prevented from springing up because the pressing members 3 are provided at positions upstream and downstream of the press rollers 2. In other words, the sheet substrate S, cover material 52, and elastic body 51 are prevented from springing up, and the sheet S1 can be punched into the desired shape according to the shape of the blades 41.

[0027] In contrast, it is difficult to punch the sheet S1 into the desired shape when the pressing member 3 is not provided. As shown in Fig. 4, when the pressing member 3 is not provided, the sheet base material S, the cover material 52, and the elastic body 51 jump up in front of and behind the press roller 2, which tends to cause the sheet S1 (sheet material 101) to shift in position or stretch in the conveyance direction, as shown in Fig. 6.

[0028] This is thought to be due to the following phenomenon. As the sheet substrate S and other materials are transported downstream while being locally deformed by the press roller 2, the elastic body 51 is pulled upstream and stretched. After passing the press roller 2, the elastic body 51 returns to its original stretch, but at this time, a force pulling the sheet substrate S downstream acts, transporting the sheet substrate S downstream. After the sheet substrate S has been transported for a certain distance, the leading edge of the cover material 52 downstream of the press roller 2 sags, conforming to the shape of the die 4. As a result, excess portions of the sheet S1 and other materials transported downstream of the press roller 2 accumulate in a wavy shape between the cover material 52 and the elastic body 51 at the midpoint downstream of the press roller 2. When the die 4 has completely passed the press roller 2, the force pressing vertically against the die 4 is released, and the entire surface of the cover material 52 conforms to the elastic body 51. As a result, the wavy portions of the sheet S1 that had accumulated between the cover material 52 and the elastic body 51 are forced to flatten and are pushed upstream. Due to this phenomenon, as shown in FIG. 6, the downstream side sheet S1 (sheet material 101) is displaced downstream, and the upstream side sheet S1 (sheet material 101) is displaced upstream.

[0029] To solve such problems, the sheet manufacturing apparatus and the sheet manufacturing method according to the present embodiment use a pressing member 3, which suppresses the shifting and stretching of the sheet S1, thereby enabling the appropriate manufacturing of the sheet S1.

[0030] As described above, according to the sheet manufacturing apparatus 1 and the sheet manufacturing method of the present embodiment, the sheet S1 is manufactured using the pressing member 3, which prevents the sheet base material S from bouncing upward during pressing. This allows the sheet S1 to be properly punched out of the sheet base material S by the punching die 4, and the sheet S1 can be properly manufactured.

[0031] Furthermore, in the sheet manufacturing apparatus 1 and the sheet manufacturing method according to the present embodiment, the presser member 3 is configured as a rotatable roller. This allows the presser member to smoothly guide the sheet substrate S that is about to bounce up in the transfer direction T. This allows the sheet S1 to be manufactured smoothly.

[0032] Furthermore, in the sheet manufacturing apparatus 1 and sheet manufacturing method according to this embodiment, the presser member 3 is provided so as to be movable in the vertical direction within a predetermined range. This allows the presser member 3 to suppress the sheet substrate S from bouncing up while reducing excessive pressing down of the sheet substrate S. Therefore, the sheet S1 can be properly manufactured. Furthermore, in the sheet manufacturing apparatus 1 and sheet manufacturing method according to this embodiment, the presser member 3 is provided so as to be movable in the transfer direction T. This allows the presser member 3 to be moved in a direction parallel to the transfer direction T to properly suppress the sheet substrate S from bouncing up. As shown in FIG. 4 , the sheet substrate S, cover material 52, and elastic body 51 tend to bounc up during pressing. However, this bouncing up varies depending on the materials of the sheet substrate S, cover material 52, and elastic body 51, such as their flexibility, 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 bouncing up, the sheet substrate S can be properly suppressed from bouncing up.

[0033] 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 according to the present disclosure are not limited to the above-described embodiment. The present disclosure can be modified in various ways without departing from the gist of the claims.

[0034] For example, in the above-described embodiment, the pressing member 3 is provided as a roller, but it may be in a form or shape other than a roller. Specifically, as shown in FIG. 5, the pressing member 3A may be configured in a plate shape. Even in this case, the pressing member 3A can prevent the sheet substrate S from bouncing upward during pressing, allowing the sheet S1 to be properly manufactured. Furthermore, the pressing member 3A may be curved so as to protrude downward. This reduces frictional resistance with the cover material 52 and allows the sheet substrate S to be guided smoothly.

[0035] Furthermore, in the above-described embodiment, the case where the pressure member 3 is provided both upstream and downstream of the press roller 2 has been described, but the pressure member 3 may be provided either upstream or downstream of the press roller 2. In this case, compared to the case where the pressure member 3 is not provided, it is possible to prevent the sheet substrate S from bouncing upward during pressing, and the sheet S1 can be appropriately manufactured.

[0036] Furthermore, in the above-described embodiment, the case where the sheet substrate S is placed on the die 4 and pressed has been described, but the die 4 may also be placed on the sheet substrate S and pressed. For example, the sheet substrate S may be placed on the cover material 52, the elastic body 51 may be placed on the sheet substrate S, the die 4 may be placed on the elastic body 51, and the laminate including the sheet substrate S and the die 4 may be pressed to produce the sheet S1. In this case, the press member 3 prevents the die 4 from bouncing up during pressing. This allows the die 4 to properly punch the sheet S1 out of the sheet substrate S, and the sheet S1 can be properly produced. [Explanation of symbols]

[0037] 1. Sheet manufacturing equipment 2 press rollers 3 Presser member 3A Presser member 4. Cutter 11 Transport table 21 Laura 22 Laura 23 frames 41 blades 51 Elastic Body 52 Cover material S Sheet base material S1 Seat T Transfer direction

Claims

1. A sheet manufacturing method for manufacturing a sheet by punching a sheet from a sheet substrate using a roller press, a setting step of setting the sheet substrate and the die in a stacked state in the roller press; a pressing step of inserting the sheet base material and the die between two rollers rotatably provided on a frame of the roller press machine, and pressing the sheet base material and the die by moving the rollers, The roller press machine is provided on the frame at one or both of the upstream and downstream sides of the roller, and is provided above the sheet substrate to be transported so as to be movable in the vertical direction, and is also provided so as to be movable in a direction parallel to the transport direction of the sheet substrate, and has a pressing member that suppresses the sheet substrate or the punching die from jumping up during pressing. Sheet manufacturing method.

2. The pressing member is a rotatable roller. The sheet manufacturing method according to claim 1 .

3. A sheet manufacturing apparatus for manufacturing a sheet by punching out the sheet from a sheet substrate, a press roller that sandwiches and moves the sheet substrate and the die in a stacked state; a pressing member that suppresses the sheet substrate or the punching die from jumping up during pressing; a frame that rotatably mounts the press roller, and that vertically moves the pressing member at one or both of the upstream and downstream sides of the press roller, above the moving sheet substrate, and that moves the pressing member in a direction parallel to the transport direction of the sheet substrate; Equipped with Sheet manufacturing equipment.

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