Sheet cutting device

Abstract

To provide a sheet cutting device which has a simple structure, yet can cut a fed sheet material to an arbitrary length, simultaneously cuts the sheet material in the width direction, can be easily assembled on-site, and can cut the sheet material at a construction site to shorten the construction period. [Solution] The sheet cutting device 1 includes a conveying mechanism 20 that conveys a sheet material SM in a strip shape, a plurality of cutters 31 that cut the sheet material SM conveyed by the conveying mechanism 20, and a cutter holding unit 32 that fixes and holds each of the plurality of cutters 31 so that they can be moved individually in the width direction of the sheet material SM conveyed in a strip shape by the conveying mechanism 20. Each of the plurality of cutters 31 comes into contact with the conveyed sheet material SM in a vertical direction to cut the sheet material SM.

Description

[Technical field]

[0001] The present invention relates to a sheet cutting device capable of cutting sheet material for building materials such as wallpaper and cloth to any desired width. [Background technology]

[0002] Sheet materials for construction materials include wallpaper, wallpaper, flooring, ceiling materials, decorative sheets, waterproof sheets, soundproofing sheets, heat insulating sheets, etc. These sheet materials are widely used for the interior and exterior of buildings, and are cut to the required size at the construction site.

[0003] A known example of a conventional cutting device for sheet material is a cutting device equipped with upper and lower rollers, which are rotated at a predetermined speed by a drive motor to feed out the sheet material wound in a roll, and which has a rotary cutter that cuts the fed sheet material to a predetermined length (see, for example, Patent Document 1). According to this conventional example, the device can be made very compact and significantly lighter in weight, and the cost can also be dramatically reduced. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-001057 A Summary of the Invention [Problem to be solved by the invention]

[0005] Here, at a construction site, it is necessary not only to cut the aforementioned sheet material to an arbitrary length, but also to simultaneously cut the sheet material to a number of widths to correspond to various rectangular shapes of the wall or ceiling parts to be installed, etc. It is preferable that this length and width cutting be achieved with one device, and that the device be lightweight and easily transportable at the construction site, and have a simple configuration for easy assembly.

[0006] Although the device as disclosed in the above-mentioned Patent Document 1 is capable of cutting in any length direction, it is not capable of cutting in the width direction at the same time, and there is room for improvement.

[0007] The present invention has been made in consideration of the above-mentioned circumstances, and its purpose is to provide a sheet cutting device which has a simple structure, yet can cut the sheet material being fed out to any length, and simultaneously cuts it in the width direction, can be easily assembled on site, and can cut the sheet material at the construction site, thereby shortening the construction period. [Means for solving the problem]

[0008] The above-mentioned object of the present invention is achieved by the following configuration. [1] A conveying mechanism that conveys the sheet material in a strip shape; a plurality of cutters that cut the sheet material conveyed by the conveying mechanism; a cutter holder that holds each of the cutters so as to be individually movable in a width direction of the sheet material conveyed in a strip shape by the conveying mechanism, Each of the plurality of cutters contacts the conveyed sheet material in a vertical direction to cut the sheet material. Sheet cutting device. [2] a table portion disposed downstream of the cutter holding portion in a conveying direction by the conveying mechanism and supporting the cut sheet material on an upper surface thereof, a notch is formed along the width direction at a middle portion of the table portion in the conveying direction; [1] A sheet cutting device according to the present invention. [3] the table portion includes a first table portion and a second table portion adjacent to each other along the conveying direction, the first table portion is disposed on the upstream side in the conveying direction, the second table portion is disposed downstream in the conveying direction, the cutout portion is a gap space in the conveying direction between the first table portion and the second table portion, The upper surface of the second table portion is lower than the upper surface of the first table portion. [2] The sheet cutting device according to the present invention. [4] The cutters and the cutter holder are integrally provided to configure a cutter unit, The cutter unit, the conveying mechanism, and the table portion are provided independently and separably from each other. [2] The sheet cutting device according to the present invention. [5] The transport mechanism includes: A drive roller that is connected to a rotary drive device and is driven to rotate; a driven roller having a rotation axis substantially parallel to the rotation axis of the drive roller; the driven roller is rotated while the driven roller holds the conveyed sheet material, thereby conveying the sheet material; [1] A sheet cutting device according to the present invention. [6] The transport mechanism further includes a hinge portion, At least one of the drive roller and the passive roller is rotatably held around the axis of the hinge portion so as to be freely movable toward and away from the drive roller or the passive roller. [5] A sheet cutting device according to the present invention.

[0009] It is recommended to use the configuration described above in [1]. In this case, the sheet material is cut using a plurality of cutters while being conveyed in a strip shape by the conveying mechanism. At this time, each of the plurality of cutters is fixed and held by the cutter holding unit so as to be individually movable in the width direction, so that the cutters are arranged at any position in the width direction of the sheet material. With this arrangement, the conveyed sheet material can be divided and cut into pieces of the desired width. Furthermore, each of the plurality of cutters contacts the sheet material in a vertical direction to cut it, so that accurate cutting of the sheet material can be achieved. Such a configuration can be realized with only basic elements (units) of the sheet material conveying mechanism, the plurality of cutters, and the cutter holding unit, and can be made into a very simple structure. In addition, in this way, it can be easily assembled at a work site such as a construction site, and by adjusting the position of the cutter as necessary, sheet materials of various widths can be obtained on site. As a result, the work efficiency at the site is improved and the construction period is also shortened. Furthermore, since simultaneous cutting by multiple cutters is possible, sheet materials of multiple desired widths can be obtained with one conveying operation, and the work time can be significantly shortened. It is recommended to use the configuration described above in [2]. In this case, the table portion disposed downstream of the cutter holding portion supports the cut sheet material on its upper surface. A cut portion is formed along the width direction at the intermediate portion of the table portion in the conveying direction. By inserting a cutting tool such as a knife into this cut portion, the cutting tool can be moved manually with high precision along the cut portion. As a result, the sheet material cut to the desired width by the cutter can be accurately cut to the desired length by moving the cutting tool along the cut portion. In addition, by supporting the sheet material on the upper surface of the table portion, stable conveyance and high cutting precision can be achieved. In this way, while this configuration is simple, the sheet material can be accurately cut in both the width direction and the length direction, improving work efficiency at construction sites. It is recommended to use the configuration described above in [3]. In this case, by dividing the table into a first table and a second table and forming a cutout between them, more effective cutting of the sheet material can be realized. Specifically, by using the gap space formed between the first table arranged on the upstream side in the conveying direction and the second table arranged on the downstream side as the cutout, it is not necessary to provide a dedicated groove for inserting a cutting tool separately, and the structure can be simplified. Furthermore, by setting the upper surface of the second table lower than the upper surface of the first table, the sheet material cut in both the width direction and the length direction can be smoothly sent onto the second table, and the conveyability of the sheet material after cutting can be improved. With this configuration, the cutting and conveying operations of the sheet material can be performed continuously and efficiently, and the work efficiency at the construction site can be further improved. In addition, since the structure of the table is simple and easy to understand, the assembly work on site is also easy, and the burden on the worker can be reduced. In this way, while this configuration is simple, it is possible to more reliably achieve both the cutting accuracy and the work efficiency of the sheet material. It is recommended to use the configuration described above in [4]. In this case, the cutters and the cutter holder are integrated to form a cutter unit, and the cutter unit, the conveying mechanism, and the table are provided independently and detachably. With this configuration, the entire device can be disassembled into a plurality of independent units, making it easy to transport to the construction site, and assembly work on site can be performed efficiently. In addition, since each unit can be separated independently, maintenance work such as inspection and part replacement can be easily performed. Furthermore, since the cutter unit is integrated, the position adjustment of the plurality of cutters can be performed collectively, improving work efficiency. In this way, this configuration can achieve both workability and maintainability at the construction site while being a simple structure that emphasizes practicality at the site. In addition, since each unit is independent, it is possible to replace or update only some of the units as necessary, and the economy of long-term use of the device can also be improved. As a result, it can greatly contribute to improving work efficiency and shortening the construction period at the construction site. It is recommended to use the configuration described above in [5]. In this case, the conveying mechanism has a driving roller connected to the rotary drive device and a passive roller whose rotation axis is arranged substantially parallel to the rotation axis of the driving roller, and the sheet material is conveyed by rotating and driving the driving roller while the sheet material is sandwiched between these rollers. With this configuration, the sheet material can be conveyed stably and reliably. Specifically, by adopting a sandwiching conveying method using the driving roller and the passive roller, it is possible to convey the sheet material at a uniform speed while preventing meandering and distortion. In addition, although it is a simple structure in which the rotation axes are arranged substantially parallel, it is possible to apply an appropriate tension to the sheet material, which also contributes to improving the accuracy during cutting. Furthermore, since the conveying mechanism can be realized with only the basic components of the driving roller and the passive roller, the entire device can be made small, making it easy to bring in and install at the construction site. In addition, it is also excellent in maintainability, and the rollers can be easily cleaned and replaced. In this way, this configuration can exert the maximum effect as a conveying mechanism with the minimum necessary components, and can improve the work efficiency and shorten the construction period at the construction site. It is recommended to use the configuration described above in [6]. In this case, the conveying mechanism has a hinge portion, and at least one of the driving roller and the driven roller is held rotatably around the axis of the hinge portion so that it can move toward and away from the other roller. With this configuration, the loading and unloading of the sheet material can be performed extremely easily. Specifically, by rotating the rollers around the hinge portion, an appropriate space can be secured between the rollers, and the sheet material can be loaded and unloaded smoothly. In addition, since the rollers can move toward and away from each other freely, it is also possible to adjust the optimal clamping pressure according to the thickness and characteristics of the sheet material. Furthermore, by adopting a simple mechanism such as the hinge portion, it is possible to simplify the structure of the device while achieving high practicality. Therefore, the assembly work at the construction site is easy and the maintainability is improved. In addition, the rotation mechanism using the hinge portion can significantly improve the workability of loading and unloading the sheet material without compromising the robustness of the entire conveying mechanism. As a result, it is possible to improve the work efficiency and shorten the construction period at the construction site. Effect of the Invention

[0010] According to the present invention, despite its simple structure, the sheet material being fed can be cut to any length, and cutting in the width direction can be performed at the same time. It can also be easily assembled on-site, and the cutting of the sheet material can be performed at the construction site, thereby shortening the construction period.

[0011] The present invention has been briefly described above. Furthermore, the details of the present invention will be more clearly understood by reading the following description of the preferred embodiment (hereinafter referred to as "embodiment") with reference to the accompanying drawings. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view illustrating an example of a configuration of a sheet cutting device according to a first embodiment of the present invention; [Diagram 2] FIG. 3 is a plan view illustrating an example of the configuration of the sheet cutting device illustrated in FIG. 2. [Diagram 3] FIG. 3 is a front view illustrating an example of the configuration of the sheet cutting device illustrated in FIG. 2. [Figure 4] FIG. 3 is a side view illustrating an example of the configuration of the sheet cutting device illustrated in FIG. 2. [Diagram 5] FIG. 3 is a schematic diagram illustrating an example of a series of operations of the sheet roll holding unit, the cutter unit, the conveying mechanism, and the table unit illustrated in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One or more embodiments specifically disclosing a sheet cutting device according to the present invention will be described in detail below with reference to the accompanying drawings as appropriate.

[0014] However, more detailed explanations than necessary may be omitted. For example, detailed explanations of already well-known matters or duplicate explanations of substantially the same configuration may be omitted. This is to avoid the following explanation becoming unnecessarily redundant and to facilitate understanding by those skilled in the art. In addition, each of the attached drawings should be viewed according to the direction of the reference numerals.

[0015] Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0016] <Terminology explanation> The terms "comprising" or "characterized by," which are synonymous with "comprising" and "containing," are intended to be interpreted in an inclusive or open-ended sense and do not exclude additional, unrecited elements or method steps. "Comprising" is a term of art used in claim language that means that the named claim elements are required, but that other claim elements may be added to further form a structure within the scope of the claim. The terms "comprising" and "having" are similarly intended to be non-exclusive, meaning that there may be additional elements other than the recited elements.

[0017] Also, as used herein, the phrase "consisting of" excludes any element, step, or ingredient not specified in the claim. When the phrase "consisting of (or variations thereof)" appears in a section of the body of a claim rather than immediately following the preamble, it limits only the elements set forth in that section and does not exclude other elements from the claim as a whole. As used herein, the phrase "consisting essentially of" limits the scope of a claim to those elements or method steps specified in addition to those that do not materially affect the main and novel feature(s) of the claimed subject matter.

[0018] With respect to the terms "comprising," "consisting of," and "consisting essentially of," when one of these three terms is used herein, the presently disclosed and claimed subject matter may also include the use of either of the other two terms. Thus, in some embodiments not expressly recited otherwise, any instance of "comprising" may be replaced with "consisting of" or "consisting essentially of."

[0019] The term "process" or "step" may be used explicitly or implicitly in connection with a process or method feature, but no limitation is imposed on the order or sequence between such explicit processes or steps or between implicit processes or steps, unless the order or sequence is stated.

[0020] First Embodiment A first embodiment of a sheet cutting device 1 according to the present invention will be described with reference to Figs. 1 to 5.

[0021] For convenience of explanation, the direction extending in the height direction (vertical direction) from the floor surface on which the sheet cutting device 1 is placed is also referred to as the "height direction". The direction in which the conveying mechanism 20 of the sheet cutting device 1 conveys the sheet is also referred to as the "conveying direction". The downstream side of the "conveying direction" in the sheet cutting device 1 is also referred to as the "front side" or "forward". On the other hand, the upstream side of the "conveying direction" in the sheet cutting device 1 is also referred to as the "rear side" or "rear". In addition, in the plan view shown in FIG. 2, the lower side in FIG. 2 is the front side of the sheet cutting device 1, and the upper side is the rear side of the sheet cutting device 1, so that the left side of the sheet cutting device 1 is also referred to as the left side of the paper surface of FIG. 2, and the right side of the sheet cutting device 1 is also referred to as the right side of the paper surface of FIG. 2. In addition, the left-right direction is also referred to as the "width direction". In addition, the direction parallel to the plane formed by the front-rear direction and the left-right direction is also referred to as the horizontal direction. In addition, expressions such as "high" or "low" may be used for the height direction. Furthermore, these directional expressions are used for the convenience of explanation and are not intended to limit the orientation of the structure during actual use.

[0022] [Overall basic configuration of the device] An example of a basic structure of a sheet cutting device 1 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a perspective view illustrating an example of the configuration of a sheet cutting device 1 according to the present embodiment. FIG. 2 is a plan view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 3 is a front view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 4 is a side view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG.

[0023] In the initial state (before the device is used), the sheet material SM is wound in multiple layers around a cylindrical core member, resulting in a rolled state. The sheet cutting device 1 of this embodiment pulls out the sheet material SM from the sheet roll SR thus set and conveys it appropriately, while cutting it in both the width direction and length direction as described below, for example at a construction site.

[0024] As shown in FIGS. 1 to 4, a sheet cutting device 1 of the present embodiment includes a sheet roll holding section 10, a conveying mechanism 20, a cutter unit 30, and a table section 40. As shown in FIG.

[0025] When viewed along the conveying direction of the sheet material SM, a sheet roll holding section 10 is disposed on the most upstream side. A cutter unit 30 is disposed downstream of the sheet roll holding section 10, and a conveying mechanism 20 is disposed downstream of the cutter unit 30. Further downstream of the cutter unit 30, a table section 40 is disposed.

[0026] The sheet roll holding unit 10 holds the sheet roll SR rotatably (see below). The sheet roll holding unit 10 also has a slide mechanism 14 and is configured to be adjustable to accommodate rolls of different lengths.

[0027] The conveying mechanism 20 is configured to be capable of conveying the sheet material SM in a strip shape at a constant speed in a predetermined direction (in this embodiment, the conveying direction, the front-rear direction) (see below). The conveying mechanism 20 conveys the sheet material SM while holding it with an appropriate tension in order to realize stable conveyance of the sheet material SM.

[0028] The cutter unit 30 is disposed between the sheet roll holding section 10 and the conveying mechanism 20 when viewed in the conveying direction, and is configured by providing a plurality of cutters 31 and a cutter holding section 32 as an integral structure (see below). The cutter unit 30 holds the plurality of cutters 31 at predetermined positions, and has a mechanism that allows each of the plurality of cutters 31 to adjust its position independently.

[0029] The table portion 40 has a flat upper surface for supporting the cut sheet material SM, and a material having an appropriate coefficient of friction for stably supporting the cut sheet material SM is stretched (or affixed) on the upper surface (see below).

[0030] In this embodiment, these components, namely, the sheet roll holding unit 10, the cutter unit 30, the conveying mechanism 20, and the table unit 40, are provided as independent structures and are separable from one another. Each component is structured so that it can be removed or replaced as necessary, and each is configured to be independently detachable.

[0031] [About the configuration of the sheet roll holding section] An example of the configuration of a sheet roll holding unit 10 according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. FIG. 1 is a perspective view illustrating an example of the configuration of a sheet cutting device 1 according to the present embodiment. FIG. 2 is a plan view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 3 is a front view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 4 is a side view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 5 is a schematic diagram illustrating an example of a series of operations of the sheet roll holding section 10, the cutter unit 30, the transport mechanism 20, and the table section 40 shown in FIG.

[0032] As shown in FIGS. 1 to 5, the sheet roll holding portion 10 includes a first base portion 11, a first holding wall portion 12, and a second holding wall portion 13. As shown in FIG.

[0033] The first base portion 11 is configured to include a plurality of square pipes, which are arranged adjacent to each other in the conveying direction (front-rear direction) with their longitudinal direction aligned with their width direction (left-right direction). The first holding wall portion 12 and the second holding wall portion 13 are arranged on the first base portion 11 to face each other and spaced apart from each other in the width direction.

[0034] A rotating disk (not shown) is rotatably supported on the opposing surfaces, i.e., the inner surfaces, of the first holding wall portion 12 and the second holding wall portion 13. As described above, the core member of the sheet roll SR is formed in a cylindrical shape, and the rotating disks are fitted into both ends of the core member, respectively, to rotatably hold the sheet roll SR.

[0035] The sheet roll holding unit 10 further includes a slide mechanism 14. One of the first holding wall and the second holding wall (in this embodiment, the first holding wall portion 12) is fixed integrally to the first base portion 11 and stands upright. Meanwhile, the other of the first holding wall and the second holding wall (in this embodiment, the second holding wall portion 13) is slidably moved in the width direction by the slide mechanism 14 while standing upright on the first base portion 11, and is provided so as to be fixable at a predetermined position. This slide mechanism 14 enables the sheet roll holding unit 10 to adaptively hold the sheet roll SR rotatably in accordance with the length of the sheet roll SR.

[0036] The sheet roll SR is rotatably held by the sheet roll holding section 10 configured in this manner, and the sheet material SM is pulled out from the end of the sheet roll SR and conveyed.

[0037] A length measuring sensor (not shown) is attached to the surface of the sheet roll SR while it is rotated and held by the sheet roll holding unit 10. The length measuring sensor comes into contact with the surface of the sheet roll SR to measure the transport amount (feed amount, length). For example, the length measuring sensor has a length measuring roller that rotates in contact with the surface of the sheet roll SR, and is configured to be able to detect the sheet payout length from the rotation amount of this length measuring roller. With this configuration, it is possible to accurately detect the sheet payout length by simple calculation processing that integrates the rotation amount and circumferential length of the length measuring roller during the sheet payout operation.

[0038] [About the transport mechanism] An example of the configuration of a transport mechanism 20 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a perspective view illustrating an example of the configuration of a sheet cutting device 1 according to the present embodiment. FIG. 2 is a plan view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 3 is a front view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 4 is a side view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 5 is a schematic diagram illustrating an example of a series of operations of the sheet roll holding section 10, the cutter unit 30, the transport mechanism 20, and the table section 40 shown in FIG.

[0039] As shown in FIGS. 1 to 5, the transport mechanism 20 of this embodiment mainly includes a rotation drive device (not shown: for example, a predetermined electric motor), a drive roller 21 connected to the rotation drive device, and a driven roller 22. In this embodiment, an example of the rotation drive device is an automatic driver device or an electric driver device used for other purposes at the site, but is not limited to this. As long as it can transmit a driving force to the drive roller 21, various devices can be used.

[0040] The drive roller 21 is disposed vertically below the driven roller 22, and is rotationally driven by power from a rotation drive device. The drive roller 21 is provided with a surface (in this embodiment, one or more rubber materials or sponge materials, etc.) having a friction coefficient that allows the sheet material SM to be reliably transported, and is structured to be able to stably transmit the rotational force from the rotation drive device to the sheet material SM.

[0041] The passive roller 22 is disposed vertically above the drive roller 21, and is disposed so that its rotation axis is approximately parallel to the rotation axis of the drive roller 21. The passive roller 22 is disposed at a position where it can hold the sheet material SM with an appropriate pressure between it and the drive roller 21. The passive roller 22 has a surface that similarly has a friction coefficient, and is rotated in accordance with the conveyance of the sheet material SM.

[0042] When the conveying mechanism 20 is in operation, the drive roller 21 is rotationally driven by the rotation drive device in a state in which the sheet material SM is sandwiched between the drive roller 21 and the passive roller 22. As a result, the sheet material SM is conveyed in a predetermined conveying direction by receiving the rotational force of the drive roller 21.

[0043] The transport mechanism 20 of the present embodiment further includes a hinge portion 23.

[0044] The hinge portion 23 is provided as a mechanism that makes it possible to adjust the relative positional relationship between the drive roller 21 and the passive roller 22. The passive roller 22 is held rotatably around the axis of the hinge portion 23. The axis of the hinge portion 23 is disposed apart from the axes of both the drive roller 21 and the passive roller 22, and is realized, for example, by using a hinge in this embodiment.

[0045] The pivot mechanism of the hinge portion 23 allows the drive roller 21 or the passive roller 22 (the passive roller 22 in this embodiment) to move toward and away from the other roller (the drive roller 21 in this embodiment).

[0046] At the beginning of the operation of the transport mechanism 20, for example, a user first rotates the passive roller 22 about the axis of the hinge portion 23 as the center of rotation in a direction away from the drive roller 21, and then sets the sheet material SM to be transported with the upper part of the drive roller 21 open. Once this setting is complete, the user rotates the passive roller 22 in a direction approaching the drive roller 21, and sets the sheet material SM in a state in which it is sandwiched between the drive roller 21 and the passive roller 22.

[0047] In this sandwiched state, the drive roller 21 is rotationally driven by the rotation drive device. As described above, the drive roller 21 can reliably and stably transport the sheet material SM by using a material having an appropriate friction coefficient provided on its surface. Meanwhile, the driven roller 22 is rotated in accordance with the transport of the sheet material SM.

[0048] In this manner, the conveying mechanism 20 can stably convey the sheet material SM without wrinkles or kinks.

[0049] In this embodiment, the sheet cutting device 1 further includes a roller pressing part RP. The roller pressing part RP has a base end fixed to the cutter unit 30, and a tip end pressing and urging the passive roller 22 vertically downward. The roller pressing part RP enables the conveying mechanism 20 to increase the frictional force of the drive roller 21 and the passive roller 22 against the surface of the sheet material SM, thereby realizing more stable conveyance.

[0050] [About the cutter unit configuration] An example of the configuration of the cutter unit 30 according to the present embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view illustrating an example of the configuration of a sheet cutting device 1 according to the present embodiment. FIG. 2 is a plan view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 3 is a front view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 4 is a side view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 5 is a schematic diagram illustrating an example of a series of operations of the sheet roll holding section 10, the cutter unit 30, the transport mechanism 20, and the table section 40 shown in FIG.

[0051] As shown in Figures 1 to 5, in this embodiment, the cutter unit 30 is configured as a single unit by integrating a plurality of cutters 31 and a cutter holding portion 32, and the cutter unit 30, the conveying mechanism 20, and the table portion 40 are provided independently and separably from each other.

[0052] Each of the cutters 31 has a cutting edge 31A at its tip that can precisely cut the sheet material SM. These cutters 31 cut the conveyed sheet material SM by contacting the sheet material SM in a vertical direction, i.e., from above to below. Each cutter 31 is set to contact the sheet material SM with a constant pressure, which allows for uniform cutting.

[0053] The cutter holding unit 32 has a mechanism for individually holding each of the multiple cutters 31. Specifically, the cutter holding unit 32 is configured to include a rail member. The rail member is disposed so that its extension direction is along the width direction, and therefore each of the cutters 31 is held by the rail material so as to be able to slide individually in the width direction. That is, each of the multiple cutters 31 is fixed by the cutter holding unit 32 so as to be able to move individually in the width direction of the sheet material SM transported in a strip shape by the transport mechanism 20. Each of the multiple cutters 31 is moved to an arbitrary position along the width direction and reliably fixed at that position.

[0054] In this way, when the sheet material SM is transported in a strip shape by the transport mechanism 20, the multiple cutters 31 held by the cutter holding unit 32 come into contact with the sheet material SM at their respective predetermined positions and cut the sheet material SM to a desired width. At this time, the position of each of the multiple cutters 31 can be adjusted independently, so that cutting to different widths can be performed simultaneously.

[0055] [Table section configuration] An example of the configuration of the table portion 40 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a perspective view illustrating an example of the configuration of a sheet cutting device 1 according to the present embodiment. FIG. 2 is a plan view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 3 is a front view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 4 is a side view illustrating an example of the configuration of the sheet cutting device 1 shown in FIG. FIG. 5 is a schematic diagram illustrating an example of a series of operations of the sheet roll holding section 10, the cutter unit 30, the transport mechanism 20, and the table section 40 shown in FIG.

[0056] 1 to 5, the table portion 40 of the present embodiment has a function of supporting the cut sheet material SM on its upper surface. For example, a material having an appropriate friction coefficient may be attached to the upper surface of the table portion 40 so as to stably support the cut sheet material SM.

[0057] In the sheet cutting device 1 of this embodiment, the table portion 40 includes a first table portion 41 and a second table portion 42 that are disposed adjacent to each other along the conveyance direction.

[0058] The first table portion 41 is disposed on the upstream side in the conveying direction, and the second table portion 42 is disposed on the downstream side in the conveying direction. The first table portion 41 and the second table portion 42 each have a flat upper surface capable of supporting the sheet material SM. Each of the first table portion 41 and the second table portion 42 is made of a square pipe material, for example, similar to the first base portion 11, and its upper surface (support surface) is the flat surface of the square pipe.

[0059] In this embodiment, the first table portion 41 and the second table portion 42 are disposed with a gap space GS therebetween in the conveying direction. This gap space GS functions as a cut portion 43 for cutting the sheet material SM.

[0060] This gap space GS extends linearly along the width direction of the sheet material SM, and has a width that allows the tip of a cutting tool (such as a knife) to be inserted. In other words, in this embodiment, the gap space GS between the first table portion 41 and the second table portion 42 forms a cutout portion 43 along the width direction at the middle portion in the conveying direction of the table portion 40. This cutout portion 43 is provided so as to penetrate the upper surface of the table portion 40 in the width direction, and its thickness (dimension in the conveying direction) is formed so as to be compatible with the blade thickness of a cutting tool such as a knife used for cutting, and so as to be able to be inserted therein.

[0061] In this embodiment, the aforementioned cutout portion 43 is formed by the first table portion 41 and the second table portion 42, but is not limited to this. For example, the table portion 40 may be made of a single member, and a groove extending in the width direction may be formed on the upper end surface of the table portion 40 to provide the aforementioned cutout portion 43. As long as a cutting tool such as a knife can be inserted therethrough, the structure and shape of the cutout portion 43 are arbitrary.

[0062] In this embodiment, the upper surface of the second table portion 42 is set lower than the upper surface of the first table portion 41. Due to this height difference, a step is formed between the first table portion 41 and the second table portion 42. The upper surface of the second table portion 42 functions as both a support surface for supporting the cut sheet material SM and a guide surface toward the downstream side.

[0063] [About the device operation] An example of the operation of the sheet cutting device 1 according to this embodiment will be described with reference to FIG. FIG. 5 is a schematic diagram illustrating an example of a series of operations of the sheet roll holding section 10, the cutter unit 30, the transport mechanism 20, and the table section 40 shown in FIG.

[0064] 5, the sheet material SM is transported by the transport mechanism 20 so as to be successively drawn out from the sheet roll SR held by the sheet roll holding unit 10 (see above). In association with this, the transported sheet material SM is cut in the width direction by the cutter 31 held by the cutter holding unit 32.

[0065] Specifically, the multiple cutters 31 are individually fixed and arranged at desired positions along the rail member of the cutter holding unit 32, and when the sheet material SM is transported, they contact the sheet material SM from above downward (along the vertical direction) with a constant pressure. This contact cuts the sheet material SM simultaneously at multiple widthwise positions and divides it into multiple strip-shaped materials each having a desired width. In other words, since the position of each of the multiple cutters 31 is independently adjusted, it is possible to simultaneously obtain strip-shaped materials of different widths.

[0066] At this time, the cut sheet material SM is supported by the upper surface of the table portion 40 disposed behind it (downstream side). A cutout portion 43 formed in the middle of the table portion 40 can reliably support the cut sheet material SM without interfering with the cutting operation of the cutter 31.

[0067] At the same time, a cutting tool is inserted into the cutout portion 43 and moved along the extension direction of the cutout portion 43, whereby the sheet material SM is accurately cut to a desired length.

[0068] Specifically, a user (such as a worker on-site) can grip the handle of a cutting tool (such as a knife) and move it at a constant speed along the cutting portion 43 to apply a uniform cutting force to the sheet material SM, forming a straight, beautiful cut surface. In other words, the cutting portion 43 appropriately guides the blade of the cutting tool to prevent shaking during cutting, making it possible to achieve high-precision cutting.

[0069] In this way, the notch 43 provided on the table portion 40 plays an important role in cutting the sheet material SM in the longitudinal direction, and in combination with the widthwise cutting by the cutter 31 described above, makes it possible to precisely process the sheet material SM to the desired size (both widthwise and lengthwise). In addition, in the table portion 40, the upper surface of the second table portion 42 is set lower than the upper surface of the first table portion 41, so that the cut sheet material SM can be smoothly guided (conveyed) to the downstream process.

[0070] [Features and advantages of this embodiment] [1] As described above, the sheet cutting device 1 of this embodiment includes the conveying mechanism 20 that conveys the sheet material SM in a strip shape, a plurality of cutters 31 that cut the sheet material SM conveyed by the conveying mechanism 20, and a cutter holding unit 32 that fixes and holds each of the plurality of cutters 31 so that they can be individually moved in the width direction of the sheet material SM conveyed in a strip shape by the conveying mechanism 20. Each of the plurality of cutters 31 comes into contact with the conveyed sheet material SM in a vertical direction to cut the sheet material SM.

[0071] For this reason, the sheet material SM is cut using a plurality of cutters 31 while being conveyed in a strip shape by the conveying mechanism 20. At this time, each of the plurality of cutters 31 is fixed and held by the cutter holding unit 32 so as to be individually movable in the width direction, so that the cutters 31 are arranged at any position in the width direction of the sheet material SM. With this arrangement, the conveyed sheet material SM can be divided and cut into pieces of a desired width. Furthermore, each of the plurality of cutters 31 contacts the sheet material SM in a vertical direction to cut it, so that the sheet material SM can be cut accurately. Such a configuration can be realized with only basic elements (units) of the conveying mechanism 20 for the sheet material SM, the plurality of cutters 31, and the cutter holding unit 32, and can be made into a very simple structure. Furthermore, in this way, it can be easily assembled at a work site such as a construction site, and by adjusting the position of the cutter 31 as necessary, sheet materials SM of various widths can be obtained at the site. As a result, the work efficiency at the site is improved, which contributes to shortening the construction period. Furthermore, because simultaneous cutting by a plurality of cutters 31 is possible, a plurality of sheet materials SM of desired widths can be obtained in a single conveying operation, thereby achieving a significant reduction in operation time.

[0072] [2] Furthermore, the sheet cutting device 1 of this embodiment further includes a table portion 40 that is disposed downstream of the cutter holding portion 32 in the conveying direction by the conveying mechanism 20 and supports the cut sheet material SM on its upper surface. A cut portion 43 is formed in the middle of the table portion 40 in the conveying direction along the width direction.

[0073] For this reason, the table portion 40 disposed downstream of the cutter holding portion 32 supports the cut sheet material SM on its upper surface. A cut portion 43 is formed along the width direction at the intermediate portion of the table portion 40 in the conveying direction. By inserting a cutting tool such as a knife into the cut portion 43, the cutting tool can be moved manually along the cut portion 43 with high accuracy. As a result, the sheet material SM cut to a desired width by the cutter 31 can be accurately cut to a desired length by moving the cutting tool along the cut portion 43. In addition, by supporting the sheet material SM on the upper surface of the table portion 40, stable conveyance and high cutting accuracy can be achieved. In this way, while this configuration is simple, the sheet material SM can be accurately cut in both the width direction and the length direction, improving work efficiency at a construction site.

[0074] [3] Moreover, according to the sheet cutting device 1 of this embodiment, the table portion 40 includes a first table portion 41 and a second table portion 42 adjacent to each other along the conveying direction. The first table portion 41 is disposed on the upstream side in the conveying direction. The second table portion 42 is disposed on the downstream side in the conveying direction. The notch portion 43 is a gap space GS in the conveying direction between the first table portion 41 and the second table portion 42. The upper surface of the second table portion 42 is lower than the upper surface of the first table portion 41.

[0075] For this reason, by dividing the table section 40 into the first table section 41 and the second table section 42 and forming the cut section 43 between them, it is possible to realize more effective cutting of the sheet material SM. Specifically, by using the gap space GS formed between the first table section 41 arranged on the upstream side in the conveying direction and the second table section 42 arranged on the downstream side as the cut section 43, it is not necessary to separately provide a dedicated groove for inserting a cutting tool, and the structure can be simplified. Furthermore, by setting the upper surface of the second table section 42 lower than the upper surface of the first table section 41, the sheet material SM cut in both the width direction and the length direction can be smoothly sent onto the second table section 42, and the conveyability of the sheet material SM after cutting can be improved. With this configuration, the cutting work and the conveying work of the sheet material SM can be performed continuously and efficiently, and the work efficiency at the construction site can be further improved. In addition, since the structure of the table section 40 is simple and easy to understand, the assembly work at the site is also easy, and the burden on the worker can be reduced. In this way, while the configuration is simple, it is possible to more reliably achieve both high cutting accuracy for the sheet material SM and high working efficiency.

[0076] [4] Furthermore, according to the sheet cutting device 1 of the present embodiment, the cutters 31 and the cutter holding portion 32 are integrally provided to configure the cutter unit 30. The cutter unit 30, the conveying mechanism 20, and the table portion 40 are provided independently and separably from each other.

[0077] Therefore, the cutter unit 30 is formed by a plurality of cutters 31 and the cutter holding portion 32, and the cutter unit 30, the conveying mechanism 20, and the table portion 40 are provided independently and detachably. With such a configuration, the entire device can be disassembled into a plurality of independent units, which makes it easy to transport to the construction site, and the assembly work on site can be performed efficiently. In addition, since each unit can be separated independently, maintenance work such as inspection and part replacement can be easily performed. Furthermore, since the cutter unit 30 is integrated, the position adjustment of the plurality of cutters 31 can be performed collectively, improving the work efficiency. In this way, this configuration can achieve both workability and maintainability at the construction site while being a simple structure that emphasizes practicality at the site. In addition, since each unit is independent, it is possible to replace or update only some of the units as necessary, and the economy of long-term use of the device can also be improved. As a result, it can greatly contribute to improving the work efficiency and shortening the construction period at the construction site.

[0078] [5] In addition, according to the sheet cutting device 1 of this embodiment, the conveying mechanism 20 has a drive roller 21 that is connected to a rotation drive device and driven to rotate, and a passive roller 22 whose rotation axis is arranged approximately parallel to the rotation axis of the drive roller 21, and the sheet material SM is conveyed by clamping the conveyed sheet material SM between the drive roller 21 and the passive roller 22 and driving the drive roller 21 to rotate.

[0079] For this reason, the conveying mechanism 20 has a driving roller 21 connected to a rotary drive device and a passive roller 22 whose rotation axis is disposed substantially parallel to that of the driving roller 21, and conveys the sheet material SM by rotating and driving the driving roller 21 while the sheet material SM is sandwiched between these rollers. With this configuration, the sheet material SM can be stably and reliably conveyed. Specifically, by adopting a sandwiching conveying method using the driving roller 21 and the passive roller 22, it is possible to convey the sheet material SM at a uniform speed while preventing meandering and distortion. In addition, even with a simple structure in which the rotation axes are disposed substantially parallel, it is possible to apply an appropriate tension to the sheet material SM, which also contributes to improving the accuracy of cutting. Furthermore, since the conveying mechanism 20 can be realized with only the basic components of the driving roller 21 and the passive roller 22, the entire device can be made compact, making it easy to bring in and install at a construction site. In addition, it is also easy to maintain, and the rollers can be easily cleaned and replaced. In this way, this configuration achieves maximum effectiveness with the minimum number of components required for the transport mechanism 20, thereby improving work efficiency and shortening construction time at construction sites.

[0080] [6] Moreover, according to the sheet cutting device 1 of this embodiment, the conveying mechanism 20 further includes a hinge portion 23. At least one of the driving roller 21 and the driven roller 22 is rotatably held around the axis of the hinge portion 23 as the center of rotation so as to be able to move toward and away from the driving roller 21 or the driven roller 22.

[0081] For this reason, the conveying mechanism 20 has a hinge portion 23, and at least one of the driving roller 21 and the driven roller 22 is held rotatably around the axis of the hinge portion 23 so as to be able to approach and separate from the other roller. With this configuration, the loading and removal of the sheet material SM can be performed extremely easily. Specifically, by rotating the rollers around the hinge portion 23, an appropriate space can be secured between the rollers, and the sheet material SM can be loaded and removed smoothly. In addition, since the rollers can be moved toward and away from each other freely, it is also possible to adjust the optimal clamping pressure according to the thickness and characteristics of the sheet material SM. Furthermore, by adopting a simple mechanism such as the hinge portion 23, it is possible to simplify the structure of the device while achieving high practicality. For this reason, the assembly work at the construction site is also easy, and the maintainability is also improved. In addition, the rotation mechanism using the hinge portion 23 can significantly improve the workability of loading and removing the sheet material SM without compromising the robustness of the entire conveying mechanism 20. As a result, it is possible to improve work efficiency and shorten construction times at construction sites.

[0082] <Conclusion> Although one or more specific embodiments have been described above, the aspects of the present invention are not limited to these embodiments, and modifications and improvements can be made as appropriate.

[0083] In other words, it is clear that a person skilled in the art can conceive of various modifications, alterations, substitutions, additions, deletions, and equivalents within the scope of the claims of the utility model registration, and it is understood that these also naturally fall within the technical scope of the present disclosure. Furthermore, the components in the above-mentioned embodiments may be arbitrarily combined within the scope that does not deviate from the spirit of the invention.

[0084] <Additional Notes> Further, the features of the installation structure of the sheet cutting device (1) in the embodiment of the present invention described above will be briefly summarized and listed below in [1] to [5]. [1] A conveying mechanism that conveys the sheet material in a strip shape; a plurality of cutters that cut the sheet material conveyed by the conveying mechanism; a cutter holder that holds each of the cutters so as to be individually movable in a width direction of the sheet material conveyed in a strip shape by the conveying mechanism, Each of the plurality of cutters contacts the conveyed sheet material in a vertical direction to cut the sheet material. Sheet cutting device. [2] a table portion disposed downstream of the cutter holding portion in a conveying direction by the conveying mechanism and supporting the cut sheet material on an upper surface thereof, a notch is formed along the width direction at a middle portion of the table portion in the conveying direction; [1] A sheet cutting device according to the present invention. [3] the table portion includes a first table portion and a second table portion adjacent to each other along the conveying direction, the first table portion is disposed on the upstream side in the conveying direction, the second table portion is disposed downstream in the conveying direction, the cutout portion is a gap space in the conveying direction between the first table portion and the second table portion, The upper surface of the second table portion is lower than the upper surface of the first table portion. [2] The sheet cutting device according to the present invention. [4] The cutters and the cutter holder are integrally provided to configure a cutter unit, The cutter unit, the conveying mechanism, and the table portion are provided independently and separably from each other. [2] The sheet cutting device according to the present invention. [5] The transport mechanism includes: A drive roller that is connected to a rotary drive device and is driven to rotate; a driven roller having a rotation axis substantially parallel to the rotation axis of the drive roller; the driven roller is rotated while the driven roller holds the conveyed sheet material, thereby conveying the sheet material; [1] A sheet cutting device according to the present invention. [6] The transport mechanism further includes a hinge portion, At least one of the drive roller and the passive roller is rotatably held around the axis of the hinge portion so as to be freely movable toward and away from the drive roller or the passive roller. [5] A sheet cutting device according to the present invention. [Industrial Applicability]

[0085] The present invention is useful as a sheet cutting device (1) that has a simple structure, yet can cut the sheet material SM being fed to any length, while simultaneously cutting it in the width direction, can be easily assembled on-site, and can be used to cut the sheet material SM at a construction site, thereby shortening the construction period. [Explanation of symbols]

[0086] 1: Sheet cutting device 10: Sheet roll holder 11: First Basic Section 12: First retaining wall portion 13: Second retaining wall portion 14: Slide mechanism 20: Transport mechanism 21: Drive roller 22: Passive roller 23: Hinge part 30: Cutter unit 31: Cutter 31A: Cutting edge 32: Cutter holder 40: Table section 41: First table section 42: Second table section 43: Cutting section GS: Interstitial space RP: Roller pressing part SM: Sheet material SR: Sheet roll

Claims

1. A conveying mechanism that conveys the sheet material in a strip shape; a plurality of cutters that cut the sheet material conveyed by the conveying mechanism; a cutter holder that holds each of the cutters so as to be individually movable in a width direction of the sheet material conveyed in a strip shape by the conveying mechanism, Each of the plurality of cutters contacts the conveyed sheet material in a vertical direction to cut the sheet material. Sheet cutting device.

2. a table portion disposed downstream of the cutter holding portion in a conveying direction by the conveying mechanism and supporting the cut sheet material on an upper surface thereof, a notch is formed along the width direction at a middle portion of the table portion in the conveying direction; 2. The sheet cutting device according to claim 1.

3. the table portion includes a first table portion and a second table portion adjacent to each other along the conveying direction, the first table portion is disposed on the upstream side in the conveying direction, the second table portion is disposed downstream in the conveying direction, the cutout portion is a gap space in the conveying direction between the first table portion and the second table portion, The upper surface of the second table portion is lower than the upper surface of the first table portion.

3. The sheet cutting device according to claim 2.

4. The cutters and the cutter holder are integrally provided to configure a cutter unit, The cutter unit, the conveying mechanism, and the table portion are provided independently and separably from each other.

3. The sheet cutting device according to claim 2.

5. The transport mechanism includes: A drive roller that is connected to a rotary drive device and is driven to rotate; a driven roller having a rotation axis substantially parallel to the rotation axis of the drive roller; the driven roller is rotated while the driven roller holds the conveyed sheet material, thereby conveying the sheet material; 2. The sheet cutting device according to claim 1.

6. The transport mechanism further includes a hinge portion, At least one of the drive roller and the passive roller is rotatably held around the axis of the hinge portion so as to be freely movable toward and away from the drive roller or the passive roller.

6. The sheet cutting device according to claim 5.

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