cutting machine

Abstract

To provide a cutter which can prevent a covering sheet from biting into the base of a beam movement body.SOLUTION: The table top of a cutting table 100 comprises: a first guide part 400, provided along a line T between the line T where the base 210 of a beam movement body 200 moves and a cutting area 110 and made to protrude in a direction crossing the table top to be capable of supporting a covering sheet 3 from below; and a second guide part 500, provided on at least one of a movement direction in the base 210 and made to keep the height of a tip 510 separated in a movement direction from the base 210 below the height of the first guide part 400 and constituted so that the tip 510 may be positioned between the first guide part 400 positioned on the side of an anti-cutting area 110 and a covering sheet 3 supported by the first guide part 400 in a width direction of the cutting table 100 orthogonal to the movement direction along the table top.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to cutting machine technology. [Background technology]

[0002] Conventionally, techniques for cutting a sheet material covered with a covering sheet have been publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 discloses a cutting machine technology in which a stack of sheet materials covered with a cover sheet is sucked onto a cutting table and then cut using a cutting head. In the cutting machine described in Patent Document 1, X-axis carriages that are movable in the X-axis direction are provided on the outer sides of the suction surface of the cutting table in the width direction. A Y beam is provided between the pair of X-axis carriages to support the cutting head so that it can move in the Y direction.

[0004] FIG. 8 is a schematic diagram of the cutting machine described in Patent Document 1. Note that in FIG. 8, the reference numerals of the cutting machine in Patent Document 1 have been appropriately changed so as to correspond to the reference numerals of the embodiments of the present invention. In the cutting machine, the end distance H from the widthwise end of the suction surface (cutting area 110) of the cutting table to the line T along which the base 210 of the X-axis traveling body moves is relatively wide (see FIG. 8(a)). The line T is a line formed by the movement locus of the base 210, with a width as shown in the figure.

[0005] 8(b), when a cover sheet is laid on a thin sheet material 2, the excess cover sheet 3 tends to spread in the width direction. In the cutter described in Patent Document 1, the end distance H is sufficiently large, so that the excess cover sheet falls within the above range even when cutting a thin sheet material 2.

[0006] However, given the recent trend toward smaller cutting machines, for example, narrowing the distance between the bases 210 while keeping the suction surface area of ​​the cutting table 100 the same would narrow the edge distance H. In such a case, if a covering sheet 3 with a relatively long width corresponding to a stack of thick sheet materials 2 is used on a stack of thin sheet materials 2, the widthwise edge of the covering sheet 3 may interfere with the line T and become caught in the base 210. Furthermore, preparing multiple variations of covering sheets 3 with different width dimensions depending on the thickness of the stack of sheet materials 2 places a heavy burden on the user, and preparing a covering sheet 3 with a size that is not available commercially would increase costs. For these reasons, a cutting machine that can prevent the covering sheet from becoming caught in the base of the beam moving body is desired. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-72887 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in consideration of the above-mentioned circumstances, and the problem it aims to solve is to provide a cutter that can prevent the covering sheet from getting caught in the base of the beam moving body. [Means for solving the problem]

[0009] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0010] That is, the cutting machine of the present invention is a cutting machine that cuts sheet material that is covered with a cover sheet and sucked into the cutting area of ​​a cutting table using a cutting head supported by a beam moving body that can move in a predetermined moving direction, and is equipped with: a first guide portion that is provided on the table surface of the cutting table along the line along which the base of the beam moving body moves and between the cutting area, and that protrudes in a direction intersecting the table surface and can support the cover sheet from below; and a second guide portion that is provided on the base on at least one side of the moving direction, and whose height of a tip portion away from the base in the moving direction is equal to or less than the height of the first guide portion, and which is configured so that its tip portion is located between the first guide portion located on the anti-cutting area side and the cover sheet supported by the first guide portion in the width direction of the cutting table that is perpendicular to the moving direction along the table surface. By configuring it in this way, the covering sheet supported by the first guide portion can be turned up by the second guide portion, thereby preventing the covering sheet from getting caught in the base portion of the beam moving body.

[0011] The cutter may further include a suction section provided on the cutting area side of the first guide section in the width direction to suck the cover sheet supported by the first guide section. With this configuration, the covering sheet is raised along the first guide portion, thereby ensuring a space for guiding the second guide portion.

[0012] In addition, in the cutting machine, the protruding tip of the first guide portion may be formed in a line shape along the movement direction. By configuring in this manner, it is possible to effectively prevent the covering sheet from getting caught in the base portion of the beam moving body. [Effects of the Invention]

[0013] The present invention has the effect of preventing the covering sheet from getting caught in the base of the beam moving body. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side view schematically showing a cutting machine according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] (a) A side view schematically showing the base of the beam mover, (b) A plan view schematically showing the base of the beam mover. [Figure 4] FIG. 4 is a rear cross-sectional view schematically showing an end portion in the width direction of the cutting machine. [Figure 5] 1A is a plan view schematically showing a first guide portion, and FIG. 1B is a side cross-sectional view schematically showing the first guide portion. [Figure 6] 10A is a side view schematically showing the second guide portion, and FIG. 10B is a rear view schematically showing the second guide portion. [Figure 7] (a) A rear cross-sectional view showing a state in which the tip of the second guide part is inserted between the first guide part and the cover sheet, and (b) A rear cross-sectional view showing a state in which the cover sheet supported by the first guide part is turned up by the second guide part. [Figure 8] (a) A rear cross-sectional view schematically showing a state in which a covering sheet is laid on a stack of relatively thick sheet materials, and (b) A rear cross-sectional view schematically showing a state in which a covering sheet is laid on a stack of relatively thin sheet materials. DETAILED DESCRIPTION OF THE INVENTION

[0015] In the following description, the directions indicated by arrows U, D, F, B, L, and R in the drawings are defined as the upward direction, downward direction, forward direction, backward direction, leftward direction, and rightward direction, respectively. Since the cutting machine 1 according to this embodiment transports the sheet material 2 from the front to the rearward, the forward-backward direction is referred to as the transport direction, and the front side is defined as the upstream side in the transport direction, and the rear side is defined as the downstream side in the transport direction. For ease of explanation, some components may be omitted or the shapes and sizes of the components may be changed as appropriate in the drawings.

[0016] First, the overall configuration of a cutting machine 1 according to a first embodiment of the present invention will be described.

[0017] The cutting machine 1 shown in FIGS. 1 and 2 cuts a sheet material 2 into a desired shape. The sheet material 2 can be made of a flexible, breathable material, such as a woven fabric or knit fabric, or a resin sheet. The sheet material 2 is cut in a stacked state. Note that the sheet material 2 shown in the following figures is shown in a stacked state. For convenience, the stacked sheet material 2 may be simply referred to as the "sheet material 2." The cutting machine 1 mainly comprises a cutting table 100, a beam moving body 200, a control unit 300, a first guide unit 400, and a second guide unit 500.

[0018] The cutting table 100 has a function of transporting the placed sheet material 2 from the upstream side to the downstream side. As shown in Fig. 2, the cutting table 100 has a cutting area 110 where the sheet material 2 is placed and cut, and outer areas 120 located on both the left and right sides of the cutting area 110.

[0019] The cutting area 110 is formed by a belt conveyor 111 having a conveying function. A block formed of a breathable brush is provided on the surface of the belt conveyor 111. Therefore, the upper surface of the cutting area 110 is formed by the tips of the brush bristles. A suction device 112 is provided below the belt conveyor 111 to suck the sheet material 2 on the belt conveyor 111.

[0020] Groove portions 121 for moving a beam moving body 200, which will be described later, are formed in the left and right outer areas 120 shown in Fig. 2. The groove portions 121 are formed so as to open on the upper surface of the outer areas 120. The groove portions 121 are closed by a sheet-like cover belt 122. Both ends of the cover belt 122 in the conveying direction are fixed to the upstream end and downstream end of the groove portions 121. In addition, a sheet (not shown) for covering the gap between the outer areas 120 and the belt conveyor 111 can be installed in the outer areas 120.

[0021] As shown in FIG. 1, on the cutting table 100, on the upstream side of the belt conveyor 111, a spreading machine (not shown) for spreading the sheet material 2 is provided.

[0022] Additionally, a covering sheet laying device 130 is provided upstream of the belt conveyor 111 for covering the sheet material 2 with a covering sheet 3. The covering sheet 3 is an air-impermeable sheet formed, for example, of a synthetic resin film. The covering sheet laying device 130 includes a sheet roller 131 with its axis oriented in the left-right direction, and support parts 132 that rotatably support both left and right ends of the sheet roller 131. The covering sheet laying device 130 is configured so that the covering sheet 3 wound around the sheet roller 131 can be laid on the sheet material 2 transported into the cutting area 110.

[0023] A pickup table to which the cut sheet material 2 is carried is provided downstream of the belt conveyor 111. At the pickup table, the parts cut out from the cut sheet material 2 are collected by an operator.

[0024] 1 to 4 supports a cutting head 230 that cuts the sheet material 2 so that the cutting head 230 is movable in the conveyance direction and the left-right direction. The cutting head 230 has a cutting blade for cutting the sheet material 2. As shown in FIG. 2, the beam moving body 200 includes a pair of bases 210 provided in the left and right outer areas 120, and a beam 220 extending in the left-right direction to connect the pair of bases 210. The lower ends of the pair of bases 210 are disposed inside the cutting table 100 via grooves 121.

[0025] The beam moving body 200 can be moved in the conveying direction along the groove 121 by a conveying direction moving mechanism 211 provided at the bottom of the base 210 (see FIG. 4 ). The conveying direction moving mechanism 211 according to this embodiment employs a drive source 211a, such as a motor, that protrudes downward from the base 210 and has an axial direction oriented in the vertical direction. By engaging a pinion gear 211b provided on the drive source 211a with a rack 113 provided inside the outer area 120, the base 210 can be self-propelled relative to the outer area 120. When the conveying direction moving mechanism 211 is configured as described above, the end distance H from the widthwise end of the cutting area 110 to the line T along which the base 210 of the beam moving body 200 moves can be made relatively short compared to, for example, when an endless belt is used as a moving mechanism, thereby enabling the device to be more compact. The line T is a line formed by the movement trajectory of the bottom of the base 210, having a width as shown in FIGS. 2 and 4 . The line T is formed so as to extend in the conveying direction, similarly to the cover belt 122.

[0026] Furthermore, the cutting head 230 can be moved left and right along the beam 220 by a left and right movement mechanism (not shown). The beam moving body 200 can move the cutting head 230 in the conveying direction and left and right by the above-mentioned movement mechanisms. As the left and right movement mechanism, a mechanism using a rack and pinion, an endless belt, or the like can be adopted.

[0027] 1 is for controlling the operation of the cutting machine 1. The control unit 300 includes an arithmetic processing unit such as a CPU, a storage unit such as a RAM or a ROM, etc. The storage unit of the control unit 300 stores various information, programs, etc. used to control the cutting machine 1.

[0028] The control unit 300 is connected to each part of the cutting table 100 and the beam moving body 200. The control unit 300 can control the operation of each part of the cutting machine 1 based on a cutting program or the like created in advance. Specifically, the control unit 300 can carry in and out the sheet material 2 and cut it by controlling the operation of the belt conveyor 111 and the beam moving body 200.

[0029] The first guide portion 400 shown in Figures 2, 4, and 5 supports the cover sheet 3 from below. The first guide portion 400 is provided in each of the left and right outer areas 120. In Figure 2, the portion indicating the first guide portion 400 is shaded in order to make it easier to distinguish between the members. The first guide portion 400 is formed in a shape that is elongated in the conveying direction. The first guide portion 400 is formed in a shape obtained by bending a plate-shaped member so that it has a substantially L-shape in cross section (seen in the conveying direction).

[0030] The pair of first guide portions 400 are formed to have bilaterally symmetrical shapes. The following description of the first guide portion 400 will focus mainly on the left first guide portion 400 with reference to Figures 4 and 5. The first guide portion 400 includes a support portion 410 and a fixing portion 420.

[0031] 5 is a portion that protrudes upward. The support portion 410 is disposed with its thickness oriented in the left-right direction.

[0032] The fixed portion 420 is a portion that protrudes horizontally toward the cutting area 110. The fixed portion 420 is disposed with its thickness oriented in the vertical direction. The fixed portion 420 is fixed to the upper surface of the outer area 120. The fixed portion 420 is formed with holes or notches (not shown) for fastening using fasteners such as bolts. As shown in FIG. 5, a groove 421 extending in the left-right direction is formed on the upper surface of the fixed portion 420. A plurality of grooves 421 are formed at intervals in the conveyance direction.

[0033] The first guide section 400 is provided on the upper surface of the outer area 120. The first guide section 400 is provided along the line T between the line T along which the base section 210 of the beam moving body 200 moves and the cutting area 110. Specifically, as shown in FIG. 4, the first guide section 400 is arranged parallel to the line T so as to be located closer to the cutting area 110 than the line T. In the first guide section 400 arranged as described above, the tip end of the support section 410 in the protruding direction is formed in a line along the conveying direction.

[0034] The second guide portion 500 rolls up the covering sheet 3 supported by the first guide portion 400. The second guide portion 500 is provided on each of the pair of base portions 210 of the beam moving body 200. Specifically, the second guide portion 500 is provided on the surface of the base portion 210 facing the cutting area 110.

[0035] The second guide portion 500 is formed in a generally plate-like shape with its thickness oriented in the left-right direction. The second guide portion 500 is formed so that its upper end is higher than the upper end (tip) of the support portion 410 of the first guide portion 400 (see FIG. 7(b)). The second guide portion 500 is formed in a slanted shape such that the height of the tip portion 510, which is the portion on the tip side in the conveying direction, gradually decreases from the base portion 210 toward the tip side. In this embodiment, the tip portion 510 is formed in a generally triangular shape when viewed from the side. The height of the tip portion 510 is formed so that it is equal to or lower than the height of the upper end (tip) of the support portion 410 of the first guide portion 400 (see FIG. 7(a)).

[0036] 3, in this embodiment, second guide portions 500 are provided on both sides of the base portion 210 in the conveying direction. The second guide portions 500 on both sides in the conveying direction are arranged so that their tip portions 510 protrude in the conveying direction relative to the base portion 210. As shown in FIGS. 4 and 6(b), the second guide portions 500 are arranged so that their left-right positions are close to the surface of the support portion 410 of the first guide portion 400 on the side opposite the cutting area 110.

[0037] The operation of the cutting machine 1 as described above will be described below.

[0038] As shown in FIG. 1, stacked sheet materials 2 are carried into the cutting area 110 by a cloth spreading machine (not shown). A covering sheet 3 is laid on the stacked sheet materials 2 from a covering sheet laying device 130. The control unit 300 operates the belt conveyor 111 to transport the stacked sheet materials 2 and covering sheet 3. The control unit 300 also stops the belt conveyor 111 when the entire sheet materials 2 and covering sheet 3 have been transported to a predetermined position in the cutting area 110.

[0039] In this state, the control unit 300 can operate the suction device 112 to suck the stacked sheet materials 2 together with the cover sheet 3. This allows the stacked sheet materials 2 to be sucked and fixed on the cutting area 110. The sheet materials 2 in the sucked state are compressed downward, and become lower in height than when not sucked. The sheet materials 2 that have been sucked and fixed can be transported by the belt conveyor 111 while still being sucked and fixed.

[0040] Next, the control unit 300 operates the cutting head 230 of the beam mover 200 to cut the suction-fixed sheet material 2 together with the cover sheet 3 into a preset shape. The cutting by the cutting head 230 is performed so as to cut out each part in order, generally from the downstream side to the upstream side.

[0041] Unlike the cutting machine of Patent Document 1 (see Figure 8), in which the end distance H is relatively wide, the cutting machine 1 of this embodiment has a relatively narrow end distance H, which makes it possible to make the device smaller and prevent the covering sheet 3 from getting caught in the base 210 of the beam moving body 200 of the covering sheet 3.

[0042] Hereinafter, with reference to Fig. 7, a description will be given of how the cutting machine 1 prevents the cover sheet 3 from getting caught. Fig. 7(a) shows a state in which the stacked sheet materials 2 are fixed by suction on the cutting area 110. In this case, the cover sheet 3 located in the outer area 120 is supported from below by the first guide part 400.

[0043] Here, the air sucked by the suction device 112 flows through the grooves 421 of the first guide section 400. As a result, the cover sheet 3 is sucked along the surface of the first guide section 400 on the cutting area 110 side (the inner surface of the support section 410 and the upper surface of the fixing section 420). In this state, the cover sheet 3 is supported so as to stand up from the upper end of the support section 410. By supporting the cover sheet 3 in this manner, the cover sheet 3 can be gently hung down (in a mountain shape) from the first guide section 400 on the anti-cutting area 110 side. This ensures a gap A (space) between the support section 410 and the cover sheet 3 on the anti-cutting area 110 side.

[0044] 7(a), in this embodiment, as the beam mover 200 moves in the transport direction, the tip 510 of the second guide part 500 is inserted into the gap A. Furthermore, as shown in FIG. 7(b), as the beam mover 200 moves further, the covering sheet 3 supported by the first guide part 400 can be turned up along the inclined surface of the second guide part 500. This makes it possible to prevent the covering sheet from getting caught in the base part 210 of the beam mover 200.

[0045] In this embodiment, by forming the groove 421 in the first guide part 400, the cover sheet 3 can be brought into close contact with the first guide part 400, effectively forming the gap A. This makes it easier to turn over the cover sheet 3 by the second guide part 500.

[0046] In addition, in this embodiment, the covering sheet 3 can be supported from below in a mountain shape by the leading ends of the linear support parts 410, which makes it easier to gently hang the covering sheet 3 down from the leading ends of the support parts 410 on the anti-cutting area 110 side. This makes it easier to turn up the covering sheet 3 supported by the first guide part 400 with the second guide part 500, and effectively prevents the covering sheet 3 from getting caught in the base part 210 of the beam moving body 200.

[0047] The groove portion 421 according to this embodiment is one form of the suction portion according to the present invention.

[0048] Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and appropriate modifications are possible within the scope of the technical idea of ​​the invention described in the claims.

[0049] For example, the shapes of the first guide portion 400 and the second guide portion 500 shown in this embodiment are merely examples, and the present invention is not limited to these. The shapes of the first guide portion 400 and the second guide portion 500 can be changed as appropriate within the scope of the technical concept of the invention described in the claims.

[0050] Specifically, in this embodiment, the support portion 410 of the first guide portion 400 is formed in a line shape, but the present invention is not limited to this. For example, the support portion 410 may be formed by a plurality of rod-shaped bodies that are provided along the conveyance direction and protrude upward.

[0051] Furthermore, in the present embodiment, an example has been shown in which the first guide portion 400 is formed in a substantially L-shape with the fixing portion 420, but the present invention is not limited to this. For example, the support portion 410 of the first guide portion 400 may be formed integrally with the upper surface of the outer area 120, or the support portion 410 may be engaged with a groove or the like formed in the upper surface of the outer area 120. As described above, any structure can be adopted as a structure for causing the support portion 410 of the first guide portion 400 to protrude from the table surface of the cutting table 100.

[0052] In addition, in this embodiment, an example in which the second guide portion 500 is formed in a flat plate shape has been shown, but the present invention is not limited to this. For example, if the distance between the base portion 210 and the first guide portion 400 is formed relatively large, the second guide portion 500 may be bent appropriately to bring the tip portion 510 closer to the first guide portion 400.

[0053] Furthermore, in this embodiment, the tip portion 510 of the second guide portion 500 is formed into a generally triangular plate shape in side view, but the present invention is not limited to this. For example, the second guide portion 500 may be formed as a rod-like body extending diagonally downward or a rod-like body formed into a generally triangular shape in side view. Furthermore, the second guide portion 500 may be formed into a generally conical shape. As described above, the second guide portion 500 may have various shapes in which the height of the tip portion 510 decreases toward the tip. Furthermore, the second guide portion 500 is not limited to the above-described inclined shape. For example, the second guide portion 500 may be formed by providing a rod-like body or a plate-like body without an inclined portion on the base portion 210 so that the rod-like body or plate-like body is positioned lower than the support portion 410 of the first guide portion 400.

[0054] In addition, in the present embodiment, an example has been shown in which the second guide portion 500 is provided on each side of the base portion 210 in the conveying direction, but the present invention is not limited to this. For example, the second guide portion 500 may be provided on only one side of the base portion 210 in the conveying direction.

[0055] Furthermore, in this embodiment, an example has been shown in which groove 421 is provided in first guide 400 as the suction section, but the suction section is not limited to the above. For example, a hole or notch that penetrates vertically through fixed portion 420 of first guide 400 may be formed as the suction section. In this case, the hole or notch may be connected to the space in which suction device 112 is provided via a hole that penetrates vertically through outer area 120 of cutting table 100, and suction may be performed via the holes.

[0056] Furthermore, for example, holes formed in the fixing portion 420 for fixing the fixing portion 420 may serve as the suction portion. Furthermore, when another member (for example, a member for fixing a sheet covering the gap between the outer area 120 and the belt conveyor 111 to the outer area 120) is installed above the fixing portion 420, the gap between the member and the upper surface of the fixing portion 420 may serve as the suction portion. Furthermore, the first guide portion 400 may not be provided with a suction portion. [Explanation of symbols]

[0057] 1 cutting machine 100 Cutting Table 200 Beam Mobile 300 control section 400 First guide part 500 Second guide part

Claims

1. A cutting machine in which a sheet material covered with a cover sheet is sucked into a cutting area of ​​a cutting table and cuts the sheet material by a cutting head supported on a beam moving body that is movable in a predetermined moving direction, a first guide portion provided on a table surface of the cutting table along a line along which a base portion of the beam moving body moves and between the line and the cutting area, the first guide portion protruding in a direction intersecting with the table surface and capable of supporting the covering sheet from below; a second guide portion provided on the base portion on at least one side in the movement direction, the height of a tip portion away from the base portion in the movement direction being equal to or less than the height of the first guide portion, and the tip portion being configured to be positioned between the first guide portion positioned on the anti-cutting area side and the covering sheet supported by the first guide portion in the width direction of the cutting table perpendicular to the movement direction along the table surface; A cutting machine comprising:

2. a suction section for sucking the cover sheet supported by the first guide section is provided on the cutting area side of the first guide section in the width direction; The cutting machine according to claim 1.

3. The protruding tip of the first guide portion is formed in a line shape along the movement direction. The cutting machine according to claim 1.

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