JP2014079815A - Cutting method and cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve effective separation of parts and cut trash.SOLUTION: A cutting device comprises a cutting conveyer and a cutting head. By using the cutting device, within a cutting area of the cutting conveyer, plural parts are cut from a long sheet material by the cutting head. At least of a pair of right-and-left drive rollers for discharge of cut trash are provided at both sides of an outlet of the cutting conveyer. The sheet material is cut along two cutting lines which join to both sides of the first part from the tip end of the sheet material, and the first part is cut from the sheet material, the cut trash is discharged by the drive rollers, the first part is carried out from the carry-conveyer, and then the next part of the first part is carried in the cutting area. Then, the next part is cut, the cut trash of the next part is discharged into both sides of the next part by the drive rollers, the next part is carried out from the carry-conveyer, and other next part of the next part is carried in the cutting area.

Description

  The present invention relates to a cutting method and a cutting apparatus for cutting a part from a long sheet material and automatically discharging cutting waste generated on both left and right sides of the part.

  The inventors are examining a method of cutting parts from a long sheet material such as a carbon prepreg. The sheet material is fixed to the conveyor of the cutting device by vacuum suction, a release sheet is provided on the bottom surface of the carbon prepreg, and an airtight sheet is covered on the top surface for efficient fixing by vacuum suction. Then, the sheet material is moved by a cutting conveyor, and the parts are cut by a cutting head. Since the leading edge of the sheet material is disturbed, the cutting of the part is started from a position where the leading edge is slightly cut off, and the part has a shape such as a parallelogram or a rectangle, and cutting scraps are generated on both the left and right sides of the part. The cutting waste is an ear portion of the sheet material, and the cutting waste is separated from the parts and discharged. And the inventor examined the cutting method and cutting apparatus which can isolate | separate cutting waste efficiently from parts and discharge | emit.

  Related prior art is shown. Patent Document 1 (JP2594701B) discloses that cutting waste and parts are separated by a brush having bristles, and the cutting waste is discharged above a parts discharge portion by a roller. However, this requires a large mechanism and space for discharging the cutting waste.

JP2594701B

  An object of the present invention is to efficiently separate parts and cutting waste.

This invention uses a cutting device including a cutting conveyor and a cutting head, and in a cutting area on the cutting conveyor, a method of cutting a plurality of parts from a long sheet material with a cutting head,
The cutting device includes power rollers for discharging at least a pair of cutting scraps on both sides of the outlet of the cutting conveyor,
The plurality of parts includes at least four sides of a leading edge, a trailing edge, and both sides,
When cutting the first part,
a) cutting the sheet material along two cutting lines leading from the leading edge of the sheet material to both sides of the first part, and cutting the first part from the sheet material;
b) The sheet material is conveyed by the cutting conveyor, the cutting waste on both sides of the first part is discharged to both sides of the first part by the power roller, the first part is carried out from the conveying conveyor, and the next part is further cut. Execute the step of bringing into the area, and
When cutting the second and subsequent parts,
c) cutting the next part so that the rear edge of the previous part becomes the leading edge of the next part;
d) a step of discharging cutting scraps on both sides of the next part to both sides of the next part by the power roller, carrying out the next part from the conveyor, and further carrying the next part into the cutting area; And executing.

The present invention also includes a cutting conveyor and a cutting head, and a cutting apparatus for cutting a part with a cutting head in a cutting area on the cutting conveyor.
The cutting device includes a power roller for discharging at least a pair of left and right cutting scraps provided on both sides of the outlet of the cutting conveyor, a controller for controlling the cutting conveyor, the cutting head, and the power roller.
The controller, from a long sheet material, when cutting a plurality of parts having at least four sides of the leading edge, the trailing edge, and both sides,
For the first part,
a) Cut the sheet material along two cutting lines leading from the leading edge of the sheet material to both sides of the first part, and cut the first part from the sheet material.
b) The sheet material is conveyed by the cutting conveyor, the cutting waste on both sides of the first part is discharged to both sides of the first part by the power roller, the first part is carried out from the conveying conveyor, and the next part of the first part is Of parts into the cutting area,
For the second and subsequent parts,
c) Cut the next part so that the rear edge of the previous part becomes the leading edge of the next part.
d) The cutting scrap on both sides of the next part is discharged to both sides of the next part by the power roller, the next part is carried out from the conveyor, and the next next part is carried into the cutting area. ,
The cutting conveyor, the cutting head, and the power roller are configured to be controlled.

  In this invention, the cutting waste on both sides of the part can be discharged to the left and right of the part by the power roller. The cutting waste is separated from the part by two cutting lines connecting the leading edge of the sheet material to both sides of the first part. And cutting scraps can be discharged to the left and right of the parts by the power roller.

  Preferably, in step b) or step d), the tip of the next part of the first part or the tip of the next next part is located at the tip of the cutting area along the conveying direction of the cutting conveyor. In this way, the sheet material is conveyed by a conveyor. In this way, the next part whose side is the length up to the entire length of the cutting area can be cut.

  Preferably, in step a), after cutting the sheet material along the two cutting lines, the sheet material is conveyed by a conveyor so that the leading edge of the first part is located at the leading edge of the cutting area. Then, the first part is cut so as to be separated from the sheet material. In this way, the first part whose side is up to the entire length of the cutting area can be cut.

  Preferably, when the cutting waste is discharged, the power roller is moved at a constant speed, for example, in synchronization with the cutting conveyor. Preferably, a pickup conveyor is provided on the exit side of the cutting conveyor. Then, the parts are separated from each other by increasing the speed of the pickup conveyor higher than the speed of the cutting conveyor or by stopping the cutting conveyor for a longer time than the pickup conveyor when the parts are being cut by the cutting blade. Furthermore, steps a), b) and steps c), d) can be partially executed in parallel. For example, in the example of FIGS. 8 and 9, after cutting the leading edge and one side of the part, the part is moved so that the leading edge of the other side is positioned at the leading edge of the cutting area. The rear edge is cut, and then the parts are discharged. In this example, processing is performed in the order of a part of step a), a part of step b), the rest of step a), and the rest of step b).

Plan view of the cutting apparatus of the embodiment Front view of carry-out table in the embodiment Plan view of sheet material Vertical section of sheet material The flowchart which shows the cutting method of an Example Diagram showing the cutting of the first part Diagram showing removal of cut parts and discharge of cutting waste Diagram showing the first half of cutting when the first part is long Diagram showing the second half of cutting when the first part is long Diagram showing the unloading of long first parts and the discharge of cutting waste

  In the following, an optimum embodiment for carrying out the invention will be shown.

  The cutting apparatus 2 of an Example and the cutting method of an Example are shown in FIGS. As shown in FIG. 1, the cutting device 2 includes a cutting machine 4 and a pickup table 6. A cutting conveyor 8 is provided in the cutting machine 4 and is a belt conveyor that circulates the bristle sheet by the power rollers 10 and 10. A vacuum suction device (not shown) is provided below the cutting conveyor 8, and the sheet material to be cut is fixed by vacuum suction. A cutting head 12 includes cutting blades such as a round blade and a knife, and moves along the arm 14 in the y direction in FIG. 1 and moves in the x direction in FIG. The x direction is a direction parallel to the conveying direction of the cutting conveyor 8, the front in the x direction may be referred to as a front end or an outlet, and the rear may be referred to as a rear end or an inlet. Further, the y direction is a direction perpendicular to the conveying direction of the cutting conveyor 8 in a horizontal plane, and may be referred to as a left-right direction or the like. The cutting conveyor 8 stops while the cutting head 12 is cutting. An operation panel 18 moves in the x direction together with the cutting head 12, for example. The cutting head 12 is not capable of cutting the entire surface of the cutting conveyor 8, but can cut a cutting area 20 that does not include the upper portions of the rollers 10 and 10.

  The pickup table 6 includes a pickup conveyor 22, and the conveyor 22 is a belt conveyor that circulates a belt by power rollers 24 and 24. A pair of left and right power rollers 26, 26 are provided on the left and right sides near the entrance of the pickup table 6, and are rotated by the motor 27 in synchronization with the cutting conveyor 8. Reference numeral 28 denotes a bracket for the roller 26 and the motor 27. Reference numeral 30 denotes a controller that controls the cutting device 2, and in particular, controls the cutting head 12 and its xy moving mechanism, conveyors 8 and 22, and rollers 26 and 26. In particular, the controller 30 moves the power roller 26 at a constant speed, for example, in synchronization with the cutting conveyor 8 when discharging cutting waste.

  FIG. 2 shows the attachment of the power roller 26, 29 is a driven roller, and the cutting waste is wound around the power roller 26 via the driven roller 29, or the cutting waste is sandwiched between the power roller 26 and the driven roller 29, Discharge to the left and right of the pickup table 6. Arrangement | positioning of the rollers 26 and 29 is arbitrary, What is necessary is just to be arrange | positioned at the both right and left sides of the pick-up conveyor 22, and to discharge | judge cutting waste to the left and right of the pick-up table 6. For example, the upper surface of the driven roller 29 may be disposed at the same height as the conveying surface of the pickup conveyor 22.

  FIG. 3 shows a long sheet material 40, and 41 is an overcut portion at the tip. Reference numerals 42 and 42 denote two overcut lines, which are examples of two cutting lines connected from the front end of the sheet material to both sides of the first part. 43 to 47 are parts, and here, various shapes of the parts are shown. Reference numerals 48 and 48 denote cutting wastes generated on the left and right sides of the parts 43 to 47. The overcut line 42 is on the same straight line as the both sides of the first part 43, and each part 43 to 47 has four sides, a front end side, both side sides, and a rear end side. Here, having four sides means that at least four sides are provided, and many of the parts 43 to 47 are quadrangular, but are not limited to quadrangular. Each side is, for example, a straight line, but may be a curved line.

  FIG. 4 shows a cross section of the sheet material 40, 50 is a release film, 52 is a carbon prepreg, glass fiber prepreg, and 54 is an airtight film. Reference numerals 55 and 55 denote cutting lines on both sides of the part, and an airtight film 54 is used to fix the carbon prepreg 52 by vacuum suction on the left and right sides of the cutting lines 55 and 55. Also, a release film 50 is used to prevent the carbon prepregs 52 from sticking to each other. The sheet material to be cut may be long and is not limited to an adhesive sheet such as a carbon prepreg.

  5 to 10 show a sheet material cutting method. The sheet material 40 is conveyed onto a cutting conveyor 8 from a roller or the like (not shown) so that the leading edge of the sheet material 40 is in the cutting area 20 and near the leading edge of the cutting area 20 (step 1). The state at this time is shown in FIG. 6. 60 is the first part, F is the tip, 61 is the tip, 62 and 63 are both sides, and 64 is the trailing edge. Cut from the front end of the sheet material 40 along the overcut lines 42, 42 so as to connect both sides 62, 63 of the first part 60, and further cut each side 61-64. An example of the cutting order is indicated by an arrow in FIG. 6, but this order is arbitrary.

  Since the first part 60 and the left and right cutting scraps 48 and 48 and the overcut portion 41 can be separated by the processing of FIG. 6, the conveyors 8 and 22 and the power roller 26 are driven in synchronization. The cutting waste 48 is manually wound around the power roller 26 and conveyed as shown in FIG. 7 (steps 3 and 4). In FIG. 2, if the height of the gap between the rollers 26 and 28 is aligned with the conveying surface of the cutting conveyor 8, the cutting waste 48 can be automatically discharged by the power roller 26. Then, the cutting conveyor 8 and the power roller 26 are stopped so that the front end F of the next part 66 is positioned in the cutting area 20 near the front end of the cutting area 20, preferably at the front end of the cutting area 20. The pick-up conveyor 22 continues to convey and separates the cut part 60 and the next part 66. FIG. 7 shows a state when the cutting conveyor 8 and the power roller 26 are stopped. If the rear ends of the parts 60 and 66 are B, the part up to the length of the cutting area 20 can be cut by stopping the front end F of the next part at the front end of the cutting area 20 (step 5). Thereafter, if there is a next part 66 (step 6), the cutting is performed in step 7 and the process returns to step 5, and if there is not, the cutting is terminated.

  8 to 10 show processing when the first part 70 is long. In FIG. 8, the tip of the first part 70 is arranged in the cutting area 20, and the overcut lines 42 and 42, the tip side 61, and the side edges are shown. 62 is cut. Next, as shown in FIG. 9, the tip F of the part 70 is conveyed to the tip of the cutting area 20, and the side 63 and the rear end 64 are cut. Then, the part can be cut in a range where the total length of the part is up to the length of the cutting area 20. Further, since the sides 61 and 62 have been cut, when the tip F ′ of the uncut side 63 is positioned at the tip of the cutting area 20 in the state of FIG. 9, the length of the sides 62 and 63 is the length of the cutting area. Parts longer than the length of the cutting area 20 can be cut in the following range.

  FIG. 10 shows the cutting of the next part 76, and the tip of the part 76 is positioned at the tip of the cutting area 20 for cutting. The side 77 is cut from the state shown in FIG. 10, and the conveyors 8 and 22 and the power roller 26 are operated so that the front end F ′ of the side 78 is located at the front end of the cutting area. When the side edge 78 and the rear edge side 79 are cut, a part longer than the length of the cutting area 20 can be cut within a range where the length of the side edges 77 and 78 is equal to or shorter than the length of the cutting area.

In the embodiment, the following effects can be obtained.
1) The cutting waste 48 and the parts 60 can be easily separated, and the cutting waste 48 can be discharged to the left and right of the pickup table 6.
2) Even long parts can be cut.

  The discharge destination of the parts is not limited to the pickup conveyor 22, and for example, the parts may be discharged so as to be stacked. The order of cutting the sides of the parts is arbitrary. For example, in FIG. 6, the side 62 and the overcut line connected thereto may be cut first, the front end 61 may be cut, and the overcut line may be cut last from the side 63. Then, when the next part 66 is carried into the cutting area 20 and cut, the rear end side 64 may be cut. The same applies to the parts 66, 70, and 76. When the accuracy of cutting is not important, a long part can be cut by cutting one side into two or more times.

2 Cutting Device 4 Cutting Machine 6 Pickup Table 8 Cutting Conveyor 10 Power Roller 12 Cutting Head 14 Arm 16 Belt 18 Operation Panel 20 Cutting Area 22 Pickup Conveyor 24 Power Roller 26 Power Roller 27 Motor 28 Bracket 29 Followed Roller 30 Controller 40 Sheet Material 41 Overcut part 42 Overcut line 43 to 47 Parts 48 Cutting scraps 50 Peeling film 52 Carbon prepreg 54 Airtight film 55 Cutting lines 60, 70 First part 61 Front edge 62, 63 Side edge 64, 79 Rear edge 66, 76 Next Parts 77, 78 side

F Parts front end B Parts rear end

Claims (4)

In a method of cutting a plurality of parts from a long sheet material with a cutting head in a cutting area on the cutting conveyor using a cutting device having a cutting conveyor and a cutting head,
The cutting device includes power rollers for discharging at least a pair of cutting scraps on both sides of the outlet of the cutting conveyor,
The plurality of parts includes at least four sides of a leading edge, a trailing edge, and both sides,
When cutting the first part,
a) cutting the sheet material along two cutting lines leading from the leading edge of the sheet material to both sides of the first part, and cutting the first part from the sheet material;
b) The sheet material is conveyed by the cutting conveyor, the cutting waste on both sides of the first part is discharged to both sides of the first part by the power roller, the first part is carried out from the conveying conveyor, and the next part of the first part is Carrying the parts into the cutting area, and
When cutting the second and subsequent parts,
c) cutting the next part so that the rear edge of the previous part becomes the leading edge of the next part;
d) a step of discharging cutting scraps on both sides of the next part to both sides of the next part by the power roller, carrying out the next part from the conveyor, and further carrying the next part into the cutting area; The cutting method characterized by performing these.   In step b) or step d), the tip of the next part of the first part, or the tip of the next next part is positioned at the tip of the cutting area along the conveying direction of the cutting conveyor, 2. The cutting method according to claim 1, wherein the sheet material is conveyed by a conveyor.   In step a), after cutting the sheet material along the two cutting lines, the sheet material is transported by a transport conveyor so that the leading edge of the first part is positioned at the leading edge of the cutting area. The cutting method according to claim 1 or 2, wherein the part is cut so as to be separated from the sheet material. In a cutting device that includes a cutting conveyor and a cutting head, and cuts parts with a cutting head in a cutting area on the cutting conveyor.
The cutting device includes a power roller for discharging at least a pair of left and right cutting scraps provided on both sides of the outlet of the cutting conveyor, a controller for controlling the cutting conveyor, the cutting head, and the power roller.
The controller, from a long sheet material, when cutting a plurality of parts having at least four sides of the leading edge, the trailing edge, and both sides,
For the first part,
a) Cut the sheet material along two cutting lines leading from the leading edge of the sheet material to both sides of the first part, and cut the first part from the sheet material.
b) The sheet material is conveyed by the cutting conveyor, the cutting waste on both sides of the first part is discharged to both sides of the first part by the power roller, the first part is carried out from the conveying conveyor, and the next part of the first part is Of parts into the cutting area,
For the second and subsequent parts,
c) Cut the next part so that the rear edge of the previous part becomes the leading edge of the next part.
d) The cutting scrap on both sides of the next part is discharged to both sides of the next part by the power roller, the next part is carried out from the conveyor, and the next next part is carried into the cutting area. ,
A cutting apparatus configured to control a cutting conveyor, a cutting head, and the power roller.

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