JP5414505B2 - Cutting device - Google Patents

Description

  The present invention relates to a cutting apparatus, and more particularly to a cutting apparatus that can pick up a cut part even while a sheet material is moving from the cutting table to the pickup table.

  In the cutting apparatus, the cutting head is moved in two directions XY on the cutting table to cut sheet materials such as leather and cloth. The cut sheet material is conveyed from the cutting table to the pickup table by a conveyor, and the parts are picked up from the sheet material. Since parts of multiple sizes may be cut out from the same sheet material, it is convenient to have a mark that shows the size of the part. Moreover, since it sorts for each part type, it is convenient to have a mark for each part type. Regarding these points, Japanese Patent Application Laid-Open No. 9-512215 (WO95 / 29046) proposes to project a mark representing the size and type of a part from a projector onto a sheet material. In the cutting, for example, a plurality of sheet materials are stacked and cut. When the cutting is finished, the sheet material is carried out to the pickup table, and at the same time, the next bundle of sheet materials is carried into the cutting table. The projector is fixed, and when a mark is projected from the projector and picked up, pick-up cannot be performed while the sheet material is moving on the pick-up table.

  Patent Document 2: Japanese Patent Laid-Open No. 2009-160666 proposes conveying a long sheet material from a spread table to a pickup table via a cutting table, and cutting the sheet material while moving it on a conveyor. In this method, since the sheet material is constantly moving, it is difficult to project the mark from a fixed projector. For this reason, it is conceivable that labels such as the type and size of parts are attached to the sheet material, or the type and size of the part are handwritten on a cover or the like covering the sheet material. However, providing a label printer is costly and laborious. Handwriting parts information on the cover is time consuming.

Special table hei 9-512215 JP2009-160666

  An object of the present invention is to make it possible to pick up parts even while a sheet material is moving on a pickup table.

The present invention relates to a cutting table, a pickup table, a conveyor that conveys a sheet material from the cutting table to the pickup table, a cutting head that moves on the cutting table to cut the sheet material, and part information on the sheet material on the pickup table. A cutting device provided with a projection device for projecting
Synchronizing means is provided for moving part information to be projected from the projection device to the sheet material in synchronism with the movement of the sheet material from the cutting table to the pickup table and at the same speed.

  In the present invention, since the parts can be picked up in parallel with the movement of the sheet material, the working time can be shortened. Even when the sheet material is fixed and cut, the time for moving the sheet material to the pickup table can be used for the pickup.

  Preferably, the synchronization unit moves the projection device in synchronization with the movement of the sheet material and at the same speed. In this way, the part information can be moved in synchronism with the sheet material and at the same speed.

Alternatively, the synchronization unit moves the part information in the image projected on the sheet material from the projection device in synchronization with the movement of the sheet material and at the same speed as the sheet material. In this way, part information can be moved by image processing or the like without providing a moving mechanism for the projection apparatus.

Preferably, the cutting device includes means for driving the cutting head so as to cut the sheet material while moving the sheet material from the cutting table to the pickup table. In this way, since the pickup can be performed in parallel with the cutting, the working time can be further reduced.

Preferably, a cutting image generating unit indicating cutting information to be projected onto the sheet material on the cutting table is provided, and the projection device can project the cutting image onto the cutting table, and an operator can determine the position of the cutting image. By changing, an alignment means for aligning the cutting information with respect to the sheet material is provided. In this way, projection of part information and projection information can be performed with one projection device.

Plan view of the cutting apparatus of the embodiment Block diagram of control system in the embodiment The flowchart which shows the cutting algorithm in an Example Plan view of a cutting apparatus of a modification The flowchart which shows the cutting algorithm in a modification

  In the following, an optimum embodiment for carrying out the invention will be shown. The scope of the present invention should be construed in consideration of the possibility of modification by well-known techniques in the description of the scope of claims.

  The cutting device 2 of an Example is shown in FIGS. 1-3, and the cutting device 3 of a modification is shown in FIG. 4, FIG. In each figure, 4 is a cutting table, 6 is a pick-up table, 8 is an extension table, and the extension table 8 need not be provided. The cutting table 4 and the pickup table 6 may be physically divided into a cutting area and a pickup area. A projector 10 projects cutting information on a sheet material (not shown) on the cutting table 4, and projects part information on a sheet material (not shown) on the pickup table 6. The projector may use either a single focus lens or a zoom lens. In place of the projector 10, two or three lasers having different wavelengths may be provided, and the cutting information and part information may be projected by moving the projection position of the laser beam at high speed. The projector 10 is moved along the guide rail 12 by a motor 14, one end thereof is located at a position facing the cutting table 4, and the other end is located at a position facing the pickup table 6. The moving mechanism is a ball screw, belt, chain, or the like It is. Note that the projector 10 may be attached to the motor 14 to be self-propelled.

  Reference numeral 16 denotes a cutting head, which has a cutting blade (not shown) and moves along the arm 18 in the Y direction in the figure, and the arm 18 moves in the X direction in the figure. X is the sheet material feeding direction, and Y is the short side direction of the sheet material. Further, the spreader main body 20 is provided on the spreader table 8, and the sheet material is stretched and arranged on the spreader table 8. A completion switch 22 is provided at an appropriate position on the pick-up table 6 or a handy controller held by the operator so that it can be input that the pick-up for one cutting has been completed. A control unit 24 includes an appropriate computer and controls the cutting device 2. Reference numerals 34 to 36 denote conveyors, 34 is a conveyor table conveyor, 35 is a cutting table conveyor, and 36 is a pickup table conveyor.

  FIG. 2 shows a control system of the cutting apparatus 2. 1 includes a cutting pattern generator 30, an operation panel 31, a projection image generator 32, a conveyor controller 33, a cutting head drive 38, and a projector moving unit 39. The cutting pattern generation unit 30 generates a cutting pattern for cutting the sheet material, and the operation panel 31 includes, for example, a pressure sensitive panel, and displays cutting information on the panel. When the operator drags the cutting information on the operation panel 31 with a finger, a mouse or the like, the cutting information projected on the sheet material is moved accordingly. The cutting information is the shape and arrangement of each part to be cut when it is necessary to align each part with leather or the like. In this case, the operator drags each part on the operation panel 31 and projects the dragged result onto the leather from the projector 10, thereby positioning the position for cutting for each part. In the case of pattern matching such as a check pattern, pattern matching reference points are displayed on the operation panel 31 and the sheet material, and pattern matching is performed by dragging the reference point on the operation panel 31. Further, the longitudinal direction of the sheet material is not necessarily parallel to the X direction in FIG. Thus, for example, two points along the X direction in FIG. 1 are displayed on the operation panel 31 and the sheet material, and the two points on the operation panel 31 are dragged to teach the longitudinal direction of the sheet material. As described above, the cutting information is aligned with the sheet material by the operation panel 31.

  The projection image generating unit 32 generates an image projected by the projector 10, and this image is an image of cutting information and an image of parts information. As described above, the image of the cutting information includes the shape and position of a part to be cut, a reference point for cutting, two points along the X axis, and the like. The part information is information for specifying the sorting method for each cut part. For example, the part information includes information indicating the size and type of the part, or one of them, for example, a mark indicating the type and size of the part, for example, a mark indicating the type. And the shape of the part may be combined, and the size may be displayed by the size of the part shape. Moreover, you may display the mark which symbolized the kind and size of parts. Further, when the projector 10 is a color projector, the type and size of the part may be displayed by hue and saturation depending on the size and the type of part. The conveyor control unit 33 controls the conveyors 34 to 36, the cutting head drive 38 drives the cutting head 16 and moves it along the XY direction, and the projector moving unit 39 uses the motor 14 to move the projector 10 to the guide rail. 12 is moved.

  FIG. 3 shows a cutting procedure in the embodiment. When the sheet material for one cut from the counter roll table 8 arrives on the cutting table 4, each conveyor is stopped (step 1), and the cutting information is projected onto the sheet material from the projector 10 (step 2). Using the cutting information, pattern alignment, part alignment, X-axis direction inclination correction, and the like are performed (step 3). When these are completed, cutting is started and the cutting head 16 is moved in the XY direction. Further, the conveyors 34 to 36 are activated, and the projector 10 is moved by the motor 14 to project a pick-up mark, that is, part information, on the sheet material. At this time, the projector 10 moves at the same speed in the same direction as the sheet material, and the part information itself may be constant, for example, or the part information is increased according to the length of the sheet material carried into the pickup table 6. Also good. When the cutting information includes the shape of the part, the part information may be an image obtained by adding a mark of the type or size of the part to the shape. In parallel with the cutting, the next sheet material is carried into the cutting table 4 (step 4).

  In this way, in synchronization with cutting on the cutting table 4, the part information is projected onto the sheet material on the pickup table 6 to pick up the parts. The conveyors 34 to 36 stop when the next sheet material arrives on the cutting table. At the same time, the cut sheet material is completely moved to the pickup table (step 5). When the operator completes the pickup, the operator inputs that fact from the completion switch 22 and quickly returns the projector 10 to the position on the cutting table 4 (step 6). The execution order of steps 5 and 6 is arbitrary, but the next cutting information cannot be projected until the completion switch 22 is pressed, so the next cutting does not start. Note that a delay switch may be provided instead of the completion switch, and when the switch is touched, the rapid return of the projector may be delayed by a predetermined time. By moving the projector 10 along the guide rail 12 in the same direction at the same speed as the movement of the sheet material, it becomes possible to pick up at the same time as cutting.

  Instead of moving the projector 10, the position of the projector may be fixed, and the position of the part information (such as a mark) in the projection image may be moved. FIG. 4 and FIG. 5 show such modifications, 3 is a new cutting device, and 11 is a new projector. The other members are the same as those in the embodiment of FIGS. 1 to 3, and the projector 11 can project the cutting information onto the cutting table 4 and can project the parts information onto the pickup table 6. In synchronization with the movement of the sheet material from the cutting table 4 to the pickup table 6, the position of the part information in the projection image is moved at the same speed as the sheet material. FIG. 5 shows an algorithm for this purpose, and the steps common to FIG. 3 are the same steps. In step 10, the pick-up mark in the part information is moved in the same direction as the sheet material so as to move at the same speed on the sheet material. Further, the conveyors 34 to 36 stop when the next sheet material arrives on the cutting table. At the same time, the cut sheet material is completely moved to the pickup table (step 5). When the completion switch is input in step 11, the projection of the pickup mark is stopped. In addition, when positioning for the next cutting, pattern matching, teaching in the X direction, and the like are completed, and cutting is resumed, projection of part information is resumed. 4 and 5 can simultaneously project the cutting information and the part information, so that it can be picked up while performing pattern matching on the cutting table 4.

  Since the projectors 10 and 11 have a short focal length, it is preferable to use a single-focus lens that can project from a low height to a wide range. In the embodiment, it is shown that the cutting and the pick-up are performed at the same time. However, only the cutting head 16 is moved while cutting the sheet material, and the cutting is performed. It may start and pick up during this time. When the sheet material has moved to the pickup table 6 and the pickup has not been completed, wait for pattern matching or the like until the pickup is completed or temporarily return the projector 10 to perform pattern matching and then again. It may be moved to project part information.

In the embodiment, the following effects can be obtained.
(1) Since the parts can be picked up in parallel with the movement of the sheet material, the work time can be shortened.
(2) When cutting while moving the sheet material, the work time can be further shortened because the sheet material can be picked up in parallel with the cutting.
(3) Even when the sheet material is fixed and cut, the time for moving the sheet material to the pickup table 6 can be used for the pickup.
(4) If the projectors 10 and 11 are used both for projecting part information and cutting information, a single projection device is sufficient.
(5) Since the pick-up table 6 can be picked up without unfolding the sheet material for one time, the length of the pick-up table 6 can be made shorter than the sheet material for one time.

2, 3 Cutting device 4 Cutting table 6 Pickup table 8 Rolling table 10, 11 Projector 12 Guide rail 14 Motor 16 Cutting head 18 Arm 20 Rolling machine body 22 Completion switch 24 Control unit 30 Cutting pattern generation unit 31 Operation panel 32 Projection Image generating unit 33 Conveyor control units 34 to 36 Conveyor 38 Cutting head drive 39 Projector moving unit

Claims (6)

Cutting table, pickup table, conveyor for conveying sheet material from the cutting table to the pickup table, cutting head that moves on the cutting table to cut sheet material, and projection that projects part information onto the sheet material on the pickup table A cutting device comprising:
A cutting apparatus comprising: synchronization means for moving part information to be projected from the projection apparatus to the sheet material at the same speed as the movement of the sheet material from the cutting table to the pickup table.   2. The cutting apparatus according to claim 1, wherein the synchronization unit moves the projection apparatus in synchronization with the movement of the sheet material and at the same speed. 2. The cutting according to claim 1, wherein the synchronization unit moves the part information in the image projected from the projection device onto the sheet material in synchronization with the movement of the sheet material and at the same speed as the sheet material. apparatus. 4. The cutting according to claim 1, further comprising means for driving the cutting head so as to cut the sheet material while moving the sheet material from the cutting table to the pickup table. apparatus.   A cutting image generating means for showing cutting information to be projected onto the sheet material on the cutting table is provided, and the projection device can project the cutting image onto the cutting table, and the operator can change the position of the cutting image. The cutting apparatus according to claim 2 or 3, further comprising an alignment means for aligning the cutting information with respect to the sheet material. A cutting image generating means for showing cutting information to be projected onto the sheet material on the cutting table is provided, and the projection device can project the cutting image onto the cutting table, and the operator can change the position of the cutting image. 5. The cutting apparatus according to claim 4, further comprising alignment means for aligning the cutting information with respect to the sheet material.

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