Cutting machine

Abstract

A cutting machine with a cutting blade grinding mechanism and a method for grinding the cutting blade of the cutting machine, which can prevent the covering sheet from biting into the base of the crossbeam moving body. The cutting machine includes a first guide section (400) and a second guide section (500). The first guide section is provided on the worktable surface of the cutting worktable (100) along the line (T) between the base (210) of the crossbeam moving body (200) and the cutting area (110), and protrudes in a direction intersecting the worktable surface to support the covering sheet (3) from below. The second guide section is provided on at least one side of the moving direction at the base (210), and the height of the front end (510) of the base (210) in the moving direction is below the height of the first guide section. It is configured to be located on the opposite side of the cutting area (110) in the width direction of the cutting worktable (100) which is orthogonal to the moving direction along the worktable surface. The front end (510) is located between the first guide section and the covering sheet (3) supported by the first guide section.

Description

Technical Field

[0001] This invention relates to the technology of cutting machines. Background Technology

[0002] Technology for cutting sheets covered with a covering sheet is known in the past. For example, as described in Patent Document 1.

[0003] Patent Document 1 discloses a cutting machine that cuts a laminate of sheet material, with a cutting head attracting it to a cutting worktable while it is covered with a covering sheet. In the cutting machine described in Patent Document 1, X-axis traveling bodies movable in the X-axis direction are respectively provided on the outer side of the suction surface of the cutting worktable in the width direction. A Y-beam that supports the cutting head and is movable in the Y-direction is provided between a pair of X-axis traveling bodies.

[0004] Figure 8 This is a schematic diagram illustrating the cutting machine described in Patent Document 1. Additionally, in Figure 8 In this invention, the notation for the cutting machine in Patent Document 1 is appropriately modified to correspond with the notation of the embodiment of the present invention. In the above-described cutting machine, the distance H from the end of the width direction of the suction surface (cutting area 110) of the cutting worktable to the end of the line T that moves from the base 210 of the X-axis traveling body is formed to a relatively wide distance (see reference). Figure 8 (a)). The line T mentioned above is a line formed by the movement trajectory of the base 210 with the width shown in the figure.

[0005] Here, as Figure 8 As shown in (b), when the covering sheet is laid on the thin sheet 2, the excess amount of the covering sheet 3 tends to expand in the width direction. In the cutting machine described in Patent Document 1 above, because the end distance H is sufficiently wide, even when cutting the thin sheet 2, the excess amount of the covering sheet is within the aforementioned range.

[0006] However, with the recent demand for miniaturization of cutting machines, for example, when the distance between the bases 210 is narrowed while keeping the width of the suction surface of the cutting worktable 100 constant, the end distance H becomes narrower. In such cases, if a covering sheet 3 with a relatively long width direction corresponding to a thick sheet 2 laminate is used for a thin sheet 2 laminate, there is a possibility that the end of the covering sheet 3 in the width direction will interfere with the line T, thus causing it to bite into the base 210. In addition, preparing multiple covering sheets 3 with different width dimensions corresponding to the thickness of the sheet 2 laminate is a heavy burden for the user, and the cost also increases when preparing covering sheets 3 of sizes not found in existing products. Therefore, a cutting machine that can prevent the covering sheet from biting into the base of the crossbeam moving body is desired.

[0007] Prior art literature

[0008] Patent documents

[0009] Patent Document 1: Japanese Patent Application Publication No. 2009-72887 Summary of the Invention

[0010] The problem that the invention aims to solve

[0011] The present invention was made in view of the above-mentioned situation, and the problem to be solved is to provide a cutting machine that can prevent the covering sheet from biting into the base of the crossbeam moving body.

[0012] The means to solve the problem

[0013] The problem to be solved by the present invention is as described above. Next, the means for solving this problem will be described.

[0014] That is, a cutting machine according to the present invention is provided, wherein a cutting head supported on a crossbeam movable body that can move in a predetermined moving direction draws a sheet material covered with a covering sheet into a cutting area of ​​a cutting worktable for cutting. The machine includes a first guide portion and a second guide portion. The first guide portion is disposed on the worktable surface of the cutting worktable along a line between the base of the crossbeam movable body and the cutting area, and protrudes in a direction intersecting the worktable surface, supporting the covering sheet from below. The second guide portion is disposed at least on one side of the moving direction at the base, and the height of its front end portion, which is located away from the base in the moving direction, is below the height of the first guide portion. It is configured to be located on the opposite side of the cutting area in the width direction of the cutting worktable, which is orthogonal to the moving direction along the worktable surface, with the front end portion located between the first guide portion and the covering sheet supported by the first guide portion.

[0015] With this configuration, the covering sheet supported by the first guide can be lifted by the second guide, thus preventing the covering sheet from biting into the base of the crossbeam moving body.

[0016] Alternatively, the cutting machine may also provide an attraction portion for attracting the covering sheet supported on the first guide portion in the aforementioned width direction, on the cutting area side of the first guide portion.

[0017] In this way, by making the covering sheet stand up along the first guide section, space can be ensured for guiding the second guide section.

[0018] Alternatively, the cutting machine may have the protruding front end of the first guide portion formed as a line along the moving direction.

[0019] This configuration effectively prevents the covering sheet from biting into the base of the moving beam.

[0020] The effects of the invention

[0021] As an effect of the present invention, it can prevent the covering sheet from biting into the base of the crossbeam moving body. Attached Figure Description

[0022] Figure 1 This is a schematic side view of a cutting machine according to one embodiment of the present invention.

[0023] Figure 2 It is a schematic top view of the cutting machine.

[0024] Figure 3 (a) is a schematic side view of the base of the moving beam; (b) is a schematic top view of the base of the moving beam.

[0025] Figure 4 It is a schematic rear sectional view showing the width of the cutting machine.

[0026] Figure 5 (a) is a schematic top view of the first guide section; (b) is a schematic side sectional view of the first guide section.

[0027] Figure 6 (a) is a schematic side view of the second guide section; (b) is a schematic rear view of the second guide section.

[0028] Figure 7 (a) is a rear sectional view schematically showing the front end of the second guide inserted between the first guide and the covering sheet; (b) is a rear sectional view schematically showing the covering sheet supported by the first guide being lifted by the second guide.

[0029] Figure 8 (a) is a rear sectional view schematically showing the state of the covering sheet laid on a laminate of thicker sheets; (b) is a rear sectional view schematically showing the state of the covering sheet laid on a laminate of thinner sheets. Detailed Implementation

[0030] In order to implement the invention

[0031] Below, the directions represented by arrows U, D, F, B, L, and R in the diagram will be defined as up, down, forward, backward, left, and right, respectively.

[0032] Furthermore, since the cutting machine 1 of this embodiment transports the sheet 2 from front to rear, the front-to-back direction is referred to as the transport direction, the front side is defined as the upstream side of the transport direction, and the rear side is defined as the downstream side of the transport direction. In addition, in each figure, for ease of explanation, there are cases where some parts of the components are appropriately omitted or the shape and size of the components are appropriately changed.

[0033] First, the overall structure of the cutting machine 1 according to the first embodiment of the present invention will be described.

[0034] Figure 1 and Figure 2 The cutting machine 1 shown cuts sheet 2 into the desired shape. Sheet 2 can be made of soft, breathable raw materials such as fabrics, knitwear, or resin sheets. Sheet 2 is cut in a multi-layered state. The sheet 2 shown in the following figures schematically represents a layered state. For convenience, the layered sheet 2 may be simply referred to as "sheet 2". The cutting machine 1 mainly includes a cutting worktable 100, a crossbeam moving body 200, a control unit 300, a first guide unit 400, and a second guide unit 500.

[0035] The cutting workbench 100 has the function of transporting the placed sheet 2 from the upstream side to the downstream side. For example... Figure 2 As shown, the cutting workbench 100 has a cutting area 110 for placing and cutting sheet 2 and outer areas 120 located on the left and right sides of the cutting area 110.

[0036] The cutting area 110 is formed by a belt conveyor 111 with a conveying function. A block formed by 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 for attracting the sheet 2 on the belt conveyor 111 is provided below the belt conveyor 111.

[0037] exist Figure 2 The left and right outer regions 120 shown form grooves 121 for moving the beam moving body 200 (described later). The grooves 121 are formed with openings on the upper surface of the outer regions 120. The grooves 121 are closed by sheet-like shielded belts 122. The two ends of the shielded belts 122 in the transport direction are fixed to the upstream and downstream ends of the grooves 121. Additionally, a sheet (not shown) may be provided in the outer regions 120 to cover the gap between the outer regions 120 and the belt conveyor 111.

[0038] like Figure 1 As shown, a fabric stacking machine (not shown) for stacking sheet 2 is provided on the upstream side of the belt conveyor 111 in the cutting workbench 100.

[0039] Additionally, a covering sheet laying device 130 is provided on the upstream side of the belt conveyor 111 for covering the covering sheet 3 relative to the sheet 2. The covering sheet 3 is, for example, an airtight sheet formed 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 portions 132 that rotatably support the left and right ends of the sheet roller 131. The covering sheet laying device 130 is configured to lay the covering sheet 3 wound on the sheet roller 131 onto the sheet 2 that is fed into the cutting area 110.

[0040] Downstream of the belt conveyor 111, a pick-up station is provided as the destination for transporting the cut sheet 2. At the pick-up station, the operator retrieves the parts cut from the cut sheet 2.

[0041] Figures 1-4 The illustrated beam-moving body 200 is a structure that supports the cutting head 230 for cutting the sheet material 2 in a way that allows it to move in the transport direction and the left-right direction. The cutting head 230 is equipped with a cutting blade for cutting the sheet material 2. Figure 2 As shown, the crossbeam moving body 200 includes a pair of bases 210 disposed in the left and right outer regions 120 and a crossbeam 220 extending in the left and right direction to connect the pair of bases 210 to each other. The lower ends of the pair of bases 210 are disposed inside the cutting worktable 100 via grooves 121.

[0042] The crossbeam moving body 200 can be moved in the transport direction along the groove 121 by a transport direction moving mechanism 211 provided at the lower part of the base 210 (see reference). Figure 4 The transport direction moving mechanism 211 of this embodiment employs a drive source 211a, such as a motor, that protrudes downward from the base 210 and has its axis oriented vertically. By engaging a pinion 211b provided on the drive source 211a with a rack 113 provided inside the outer region 120, the base 210 can move relative to the outer region 120. With the transport direction moving mechanism 211 formed as described above, for example, compared to the case where a circulating belt is used as the moving mechanism, the end distance H from the end of the cutting region 110 in the width direction to the line T that moves the base 210 of the crossbeam moving body 200 can be shorter, enabling miniaturization of the device. The line T has... Figure 2 and Figure 4 The line T is a line of the width shown, formed by the movement trajectory of the lower part of the base 210. The line T is formed in a similar manner to the cover belt 122, extending in the transport direction.

[0043] Furthermore, the cutting head 230 can move in the left and right directions along the crossbeam 220 via a left-right moving mechanism (not shown). The crossbeam moving body 200 can move the cutting head 230 in the transport direction and in the left and right directions via the aforementioned moving mechanisms. As the left-right moving mechanism, a mechanism using rack and pinion, circulating belt, etc., can be adopted.

[0044] Figure 1 The control unit 300 shown is used to control the operation of the cutting machine 1. The control unit 300 includes an arithmetic processing unit such as a CPU, and storage units such as RAM (random access memory) and ROM (read-only memory). The storage units of the control unit 300 store various information and programs used for controlling the cutting machine 1.

[0045] The control unit 300 is connected to various parts of the cutting workbench 100 and the crossbeam moving body 200. The control unit 300 can control the operation of various parts of the cutting machine 1 based on a pre-made cutting program. Specifically, the control unit 300 can control the feeding and unloading of the sheet 2 and the cutting by controlling the operation of the belt conveyor 111 and the crossbeam moving body 200.

[0046] Figure 2 , Figure 4 and Figure 5 The first guide portion 400 shown supports the covering sheet 3 from below. The first guide portion 400 is respectively provided in the left and right outer regions 120. Additionally, in... Figure 2 In order to easily distinguish the structures from each other, the portion representing the first guide section 400 is painted over. The first guide section 400 is formed into a long strip shape in the transport direction. The first guide section 400 is formed by bending a plate-shaped component into a roughly L-shaped shape when viewed in cross-section (in the transport direction).

[0047] A pair of first guide portions 400 are formed in a mutually symmetrical shape. Furthermore, below, using... Figure 4 and Figure 5 The description of the first guide portion 400 will focus primarily on the left-side first guide portion 400. The first guide portion 400 includes a support portion 410 and a fixing portion 420.

[0048] Figure 5 The support portion 410 shown is a portion that protrudes upwards. The support portion 410 is arranged with its thickness direction facing left and right.

[0049] The fixing part 420 is a portion that protrudes horizontally toward the cutting area 110. The fixing part 420 is positioned with its thickness direction oriented vertically. The fixing part 420 is fixed to the upper surface of the outer area 120. Holes and cuts (not shown) for fixing using fasteners such as bolts are formed in the fixing part 420. Figure 5As shown, a groove 421 extending in the left-right direction is formed on the top of the fixing part 420. Multiple grooves 421 are formed at intervals in the transport direction.

[0050] The first guide portion 400 is disposed on the upper surface of the outer region 120. The first guide portion 400 is disposed along line T between the line T on which the base 210 of the crossbeam moving body 200 moves and the cutting region 110. Specifically, as Figure 4 As shown, the first guide portion 400 is arranged parallel to the line T, located on the side of the cutting area 110 compared to the line T. The first guide portion 400, arranged as described above, forms the protruding front end of the support portion 410 into a linear shape along the transport direction.

[0051] The second guide portion 500 lifts the covering sheet 3 supported by the first guide portion 400. A pair of base portions 210 are respectively provided on the crossbeam moving body 200. Specifically, the second guide portion 500 is provided on the surface of the base portion 210 facing the cutting area 110.

[0052] The second guide portion 500 is formed in a generally plate shape with the thickness direction pointing left and right. The upper end of the second guide portion 500 is formed to be higher than the upper end (front end) of the support portion 410 of the first guide portion 400 (see reference). Figure 7 (b)). The second guide portion 500 is formed such that the height of the front end portion 510, which is the front end side portion in the transport direction, gradually decreases as it moves from the base portion 210 toward the front end side. In this embodiment, the front end portion 510 is formed into a generally triangular shape when viewed from the side. The height of the front end portion 510 is formed to be below the height of the upper end portion (front end portion) of the support portion 410 of the first guide portion 400 (see reference). Figure 7 (a)).

[0053] like Figure 3 As shown, in this embodiment, second guide portions 500 are provided on both sides of the base 210 in the transport direction. The second guide portions 500 on both sides of the transport direction are configured such that their front ends 510 protrude relative to the base 210 in the transport direction. Figure 4 and Figure 6 As shown in (b), the second guide portion 500 is positioned in the left-right direction close to the surface opposite to the cut area 110 of the support portion 410 of the first guide portion 400.

[0054] The operation of the cutting machine 1 described above will now be explained.

[0055] like Figure 1As shown, sheet 2, which is stacked by a fabric stacking machine (not shown), is transported into the cutting area 110. A covering sheet 3 from a covering sheet laying device 130 is then laid on the stacked sheet 2. The control unit 300 transports the stacked sheet 2 and the covering sheet 3 by operating the belt conveyor 111. Furthermore, the control unit 300 stops the belt conveyor 111 when the sheet 2 and the covering sheet 3 have been transported together to a predetermined position in the cutting area 110.

[0056] By activating the suction device 112 in this state, the control unit 300 can attract the stacked sheet 2 and the covering sheet 3 together. This allows the stacked sheet 2 to be attracted and fixed onto the cutting area 110. The sheet 2 in the attracted state is compressed downwards, resulting in a lower height compared to the un-attracted state. Furthermore, the attracted and fixed sheet 2 can be transported by the belt conveyor 111 while maintaining its attracted and fixed state.

[0057] Next, the control unit 300 operates the cutting head 230 of the crossbeam moving body 200, which can cut the attracted and fixed sheet 2 and the covering sheet 3 together into a predetermined shape. The cutting by the cutting head 230 is performed in a manner that cuts out each component sequentially from the downstream side to the upstream side.

[0058] The cutting machine 1 of this embodiment and the cutting machine of Patent Document 1, which forms a relatively wide end distance H (see reference 1) Figure 8 Unlike other devices, the end distance H can be made narrower, thus miniaturizing the device and preventing the base 210 of the beam moving body 200 of the covering sheet 3 from biting in.

[0059] The following reference Figure 7 The method of preventing the covering sheet 3 from biting into the cutting machine 1 is explained. Figure 7 (a) indicates the state in which the stacked sheet 2 is attracted and fixed onto the cutting area 110. In this case, the covering sheet 3 located in the outer area 120 is supported from below by the first guide portion 400.

[0060] Here, air drawn by the suction device 112 flows through the groove 421 of the first guide portion 400. As a result, the covering sheet 3 is drawn along the surface of the first guide portion 400 on the side of the cutting region 110 (the inner surface of the support portion 410 and the upper surface of the fixing portion 420). In this state, the covering sheet 3 is supported upright from the upper end of the support portion 410. By supporting the covering sheet 3 in this way, it is possible for the covering sheet 3 to hang gently (in a hill-like shape) from the first guide portion 400 on the opposite side of the cutting region 110. This ensures that the gap A (space) between the support portion 410 and the covering sheet 3 on the opposite side of the cutting region 110 is maintained.

[0061] like Figure 7As shown in (a), in this embodiment, as the beam moving body 200 moves in the transport direction, the front end portion 510 of the second guide portion 500 is inserted into the gap A. Additionally, as... Figure 7 As shown in (b), with further movement of the crossbeam moving body 200, the covering sheet 3 supported on the first guide portion 400 can be lifted along the inclined surface of the second guide portion 500. This prevents the covering sheet from biting into the base 210 of the crossbeam moving body 200.

[0062] In this embodiment, by forming a groove 421 in the first guide portion 400, the covering sheet 3 can be tightly attached to the first guide portion 400, effectively forming a gap A. Therefore, the covering sheet 3 can be easily lifted by the second guide portion 500.

[0063] Furthermore, in this embodiment, since the covering sheet 3 can be supported from below in a mountain-like manner by the front end of the linear support portion 410, the covering sheet 3 can be easily and gently drooped from the front end of the support portion 410 on the opposite side of the cutting area 110. Therefore, the covering sheet 3 supported by the first guide portion 400 can be easily lifted by the second guide portion 500, effectively preventing the covering sheet 3 from biting into the base 210 of the crossbeam moving body 200.

[0064] Furthermore, the groove 421 in this embodiment is one aspect of the attraction part of the present invention.

[0065] The above description relates to one embodiment of the present invention, but the present invention is not limited to the invention described above, and appropriate modifications may be made within the scope of the technical concept of the invention as described in the claims.

[0066] For example, the shapes of the first guide portion 400 and the second guide portion 500 shown in this embodiment are just examples, and the present invention is not limited thereto. The shapes of the first guide portion 400 and the second guide portion 500 may be appropriately modified within the scope of the technical concept of the invention described in the claims.

[0067] Specifically, this embodiment illustrates an example where the support portion 410 of the first guide portion 400 is formed in a linear shape, but the invention is not limited to this. For example, the support portion 410 may also be formed from multiple rod-shaped bodies that are arranged along the transport direction and protrude upwards.

[0068] Furthermore, in this embodiment, an example is shown where the first guide portion 400 is formed in a generally L-shaped form accompanying 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 integrally formed with the upper surface of the outer region 120, or the support portion 410 may engage with a groove or the like formed on the upper surface of the outer region 120. As described above, any structure can be used as the configuration for the support portion 410 of the first guide portion 400 to protrude from the worktable surface of the cutting worktable 100.

[0069] Furthermore, in this embodiment, an example is shown where the second guide portion 500 is formed into a flat plate shape, but the invention is not limited to this. For example, if the distance between the base portion 210 and the first guide portion 400 is relatively large, the second guide portion 500 may be appropriately bent in order to bring the front end portion 510 closer to the first guide portion 400.

[0070] Furthermore, in this embodiment, an example is shown where the front end portion 510 of the second guide portion 500 is formed into a plate shape that is approximately triangular when viewed from the side, but the present invention is not limited to this. For example, the second guide portion 500 may also be formed from a rod-shaped body that extends obliquely downward and is formed into a approximately triangular shape when viewed from above. Alternatively, the second guide portion 500 may be formed into a generally conical shape. Thus, the second guide portion 500 can adopt various shapes in which the height of the front end portion 510 slopes downward towards the front end. In addition, the second guide portion 500 is not limited to the sloped shape described above. For example, the second guide portion 500 can be constructed even by providing a rod-shaped body or plate-shaped body without a sloped portion at a position lower than the support portion 410 of the first guide portion 400 at the base 210.

[0071] Furthermore, in this embodiment, an example is shown where second guide portions 500 are provided on both sides of the base 210 in the transport direction, but the present invention is not limited to this. For example, the second guide portion 500 may be provided only on one side of the base 210 in the transport direction.

[0072] Furthermore, in this embodiment, an example is shown where a groove 421 is provided in the first guide portion 400 as an attraction part, but the attraction part is not limited to the structure described above. For example, as an attraction part, a hole or cutout that extends vertically through the fixing portion 420 of the first guide portion 400 may also be formed. In this case, the aforementioned hole or the like may be connected to the space where the attraction device 112 is provided through a hole that extends vertically through the outer region 120 of the cutting workbench 100, and attraction may occur between them through the aforementioned hole.

[0073] Alternatively, for example, the holes formed in the fixing portion 420 for fixing the fixing portion 420 can be used as suction portions. Furthermore, if other components (e.g., components for fixing a piece covering the gap between the outer region 120 and the belt conveyor 111 to the outer region 120) are provided above the fixing portion 420, the gap between these components and the upper surface of the fixing portion 420 can also be used as suction portions. Alternatively, suction portions may not be provided in the first guide portion 400.

[0074] Explanation of symbols

[0075] 1: Cutting machine; 100: Cutting workbench; 200: Crossbeam moving body; 300: Control unit; 400: First guide unit; 500: Second guide unit.

Claims

1. A cutting machine (1) that cuts a sheet material (2) attracted to a cutting region of a cutting table (100) in a state in which a cover sheet (3) is overlaid, by a cutting head (230) supported on a cross rail moving body (200) movable in a prescribed moving direction, wherein, It has a first guide section (400) and a second guide section (500). The first guide portion (400) is disposed along the line (T) on the worktable surface of the cutting workbench (100) between the line (T) on which the base (210) of the beam moving body (200) moves and the cutting area (110), and protrudes in a direction intersecting the worktable surface, so as to support the covering sheet (3) from below. The second guide portion (500) is provided on at least one side of the moving direction at the base (210). The height of the front end portion (510) of the base (210) in the moving direction is below the height of the first guide portion (400). It is configured to be located on the opposite side of the cutting area (110) in the width direction of the cutting worktable (100) which is orthogonal to the moving direction along the worktable surface. The front end portion (510) is located between the first guide portion (400) and the covering sheet (3) supported by the first guide portion (400).

2. The cutting machine (1) as described in claim 1, wherein, In the aforementioned width direction, an attraction portion (421) for attracting the aforementioned covering sheet (3) supported on the first guide portion (400) is provided on the side of the cut area (110) of the first guide portion (400).

3. The cutting machine (1) as described in claim 1, wherein, The protruding front end of the first guide portion (400) is formed as a line along the moving direction.

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