JP5091211B2 - Packaging material cutting device - Google Patents

Description

  The present invention relates to a packaging material incision device for incising a packaging material containing a packaging object such as a can lid group.

  In the manufacturing process of can products such as beverage cans, a large number of can lids manufactured in a separate process from the main body of the can are supplied in the form of a packaged product packaged in a packaging material in the state of thickness. There is a case. The can lid group is taken out by cutting the packaging material with a rotary blade, and if the blade is chipped at this time, the chipped blade is mixed to cause defective products. As an example of measures against blade chipping, a device that detects blade chipping of a rotary blade is known (see, for example, Patent Document 1 or 2).

JP-A-6-91427 JP-A-63-81204

  Although the above-mentioned apparatus can detect the chipping of the rotary blade, it cannot capture the chipped blade. It is necessary to find all of the chipping blades because they become defective when the chipping blade is mixed into the product, but the chipping blades are small and the discovery is very laborious.

  Then, an object of this invention is to provide the packaging material cutting device which can capture | acquire the blade which was missing easily and reliably.

The packaging material incision apparatus of the present invention has a cutter (11) for incising a packaging material (102) including an object to be packaged (101), and a suction port (12a) for aspirating the inside, and the periphery of the cutter A box (12) surrounding the box, a dust collector connected to the suction port and sucking the inside of the box, and a trap that is provided between the suction port and the dust collector and catches a chipped edge of the cutter Means (31), the cutter is made of a magnetic material, the capturing means is an electromagnet, a detection means (14) for detecting a blade chip of the cutter, and a detection result of the detection means And the control means (21) for controlling the magnetic force generated by the electromagnet to be generated .

According to the packaging material incising apparatus of the present invention, when the packaging material is incised by the cutter, the dust collecting device operates to suck the inside of the box. If the cutter blade is chipped during incision, the chipped cutter blade is also sucked by the suction force of the dust collector and moves to the supplementary means. Then, since the chipping edge is supplemented by the supplementary means, when the chipping edge is generated, it is only necessary to confirm the supplementary means, and it becomes easy to find the chipping edge. Therefore, the burden on the operator can be reduced and the time for stopping the packaging material cutting apparatus can be shortened. Further, the chipped blade is attracted by the dust collector and is attracted by the magnetic force and captured by the capturing means while moving along the air flow direction. Thereby, only a chipping blade can be reliably captured by the capturing means without hindering the air flow. Further, when the cutter blade is chipped, the chipping is detected by the detecting means. With the detection, the electromagnet acts to supplement the chip. Therefore, a magnetic force can be generated as necessary, and the chipped blade can be captured efficiently.

In form catching means are electromagnets, it said as a capture means, a plurality of electromagnets may be arranged in a zigzag pattern along a direction transverse to the air flow direction by the suction. According to this embodiment, the air sucked by the dust collector passes through the vicinity of the magnet. As a result, the chip edge comes close to a region where the magnetic force is large, so that the chip edge can be reliably captured.

  In addition, in the above description, in order to make an understanding of this invention easy, the reference sign of the accompanying drawing was attached in parenthesis, but this invention is not limited to the form of illustration by it.

  As described above, in the packaging material cutting device of the present invention, when the packaging material is cut by the cutter, the dust collecting device operates to suck the inside of the box. If the cutter blade is chipped during incision, the chipped cutter blade is also sucked by the suction force of the dust collector and moves to the supplementary means. Then, since the chipping edge is supplemented by the supplementary means, when the chipping edge is generated, it is only necessary to confirm the supplementary means, and it becomes easy to find the chipping edge. Therefore, the burden on the operator can be reduced and the time for stopping the packaging material cutting apparatus can be shortened.

1 is a schematic view of a packaging material cutting device according to one embodiment of the present invention. The principal part schematic of an incision unit. The perspective view of a magnet. Sectional drawing of a packaged product.

  FIG. 1 is a schematic view of a packaging material cutting device according to one embodiment of the present invention. The packaging material incision device 1 includes an incision unit 2 for incising the packaging material 102 of the packaged product 100 shown in FIG. 4, a dust collector (not shown) connected to the incision unit 2, and an incision unit 2 and a dust collector. And a chipped edge capturing device 3 provided on the head. The package 100 is manufactured by wrapping a group (packaging object) of a large number of can lids 101 arranged so as to be stacked in the thickness direction with a packaging material 102 made of wrapping paper or the like, It has a substantially cylindrical shape.

  A removal unit (not shown) for removing the cut packaging material 102 from the group of can lids 101 is provided on the downstream side of the cutting unit 2 with respect to the conveyance direction of the packaged product 100. The incision unit 2 and the removal unit are appropriately provided with a transport unit (not shown) that transports the group of can lids 101 from which the package 100 and the packaging material 102 have been removed. A known technique may be used for the removal unit and the transport unit, and appropriate changes may be made.

  In FIG. 2, the principal part schematic of the incision unit 2 is shown. The incision unit 2 is a cutter 11 for incising the packaging material 102 of the package 100, a box 12 surrounding the cutter 11, a duct 13 provided on the upper portion of the box 12, and detection means for detecting a blade chip of the cutter 11. The detection sensor 14 is provided.

  The cutter 11 is a disk-shaped rotary blade provided with a saw blade 11a on the entire periphery of the peripheral portion thereof. The cutter 11 is made of a magnetic material such as iron. A rotating shaft 11b is fixed at the center of the cutter 11, and the cutter 11 rotates by obtaining power from a motor (not shown) via the rotating shaft 11b. A known electric motor or the like may be used as the motor. The box 12 is provided so as to surround the periphery of the cutter 11. The lower surface of the box 12 is opened, and the cutter 11 in the box 12 is configured to come into contact with the packaging material 102 of the packaged product 100 that is conveyed below. A duct connection port 12 a as a suction port to which the duct 13 is connected is provided at the upper part of the box 12. The duct 13 is connected to a dust collector via a chip edge capturing device 3 described later. The dust collector is composed of a known vacuum pump or the like, and sucks the inside of the box 12 through the duct 13. Thereby, a suction force acts on the packaged product 100 from above, and a slack is generated between the upper end of the group of can lids 101 and the packaging material 102. The cutter 11 cuts into the slack portion and cuts the packaging material 102 in the axial direction of the package 100. Paper dust or the like of the packaging material 102 generated at the time of incision is also sucked by the dust collector.

  The detection sensor 14 detects unevenness of the saw blade 11a of the cutter 11 and detects a chip of the saw blade 11a. As the detection sensor 14, a retroreflective laser sensor is used. The optical axis of the detection sensor 14 is set in a direction perpendicular to the rotation surface of the cutter 11, and is set so as to detect the vicinity of the tip of the saw blade 11a. The size of the spot light and the light projection position of the detection sensor 14 are adjusted as appropriate so that the unevenness of the saw blade 11a can be detected. When no chipping occurs, the sensor light is blocked by the saw blade 11a, so that the chipping is not detected. When the chipping occurs, the sensor light is received at the chipped portion and the chipping is detected. When a retroreflective laser sensor is used, paper dust or the like may adhere to a mirror facing the cutter 11 and the light reception level of the detection sensor 14 may be lowered, so that the detection of a chip may become unstable. For this reason, the detection accuracy may be stabilized by separately providing a sensor for monitoring the mirror light reception level. Note that various known sensors such as a photoelectric sensor may be used as the detection sensor 14.

  The packaging material cutting device 1 includes a control device 21 that processes an output signal of the detection sensor 14 and a notification device 22 that notifies when a chipping of the saw blade 11a is detected. The control device 21 is configured as a kind of computer unit including a microprocessing unit. When the control device 21 detects a blade chip based on the output signal of the detection sensor 14, the control device 21 controls the notification device 22 to display to notify the operator of the abnormality of the cutter 11. Further, the control device 21 performs control so as to stop the driving of the cutter 11, and further controls so that the operation of the dust collecting device is stopped after a predetermined time from detection of the chipping blade. The control device 21 functions as control means.

  The chipping blade capturing device 3 includes a plurality of magnets 31 as supplementary means for capturing the chipping blades, and a surrounding portion 32 surrounding the magnets 31. FIG. 3 shows a perspective view of the magnet 31. The magnet 31 is a cylindrical permanent magnet. The plurality of magnets 31 are fixed in a plate 31a shape. The plurality of magnets 31 are arranged in a staggered manner along a direction crossing the air flow direction by suction. In this embodiment, the magnets 31 are arranged so that the axial directions of the magnets 31 are parallel to each other, and the magnets 31 are installed in the enclosure 32 so that the axial direction of the magnets 31 is perpendicular to the flow direction of the air flowing in the duct 13. Is done. Thereby, since the air which flows in the enclosure part 32 passes the narrow space | interval between each magnet 31, or between the enclosure part 32 and the magnet 31, the capture | acquisition precision of the chipping blade which is a magnetic body is improved. . Note that a convex portion having a hollow inside may be provided on the surface of the plate 31a instead of the magnet 31, and a permanent magnet may be inserted into the convex portion. An effect similar to that of the magnet 31 is obtained by the permanent magnet provided in the convex portion. The enclosure portion 32 is provided with an air supply port 32a and an air discharge port 32b that are respectively connected to the duct 13, and a door 32c that can open and close the enclosure portion 32. The magnet 31 can be attached or detached by opening and closing the door 32c. When the door 32c is closed, it functions as a duct.

  The operation of the packaging material cutting device 1 will be described. When the package 100 is sequentially conveyed to the incision unit 2, the packaging material 102 is incised by the cutter 11. At this time, slack formation of the packaging material 102 and suction of paper dust and the like are performed in the box 13 by suction of air by the dust collector. When the saw blade 11a of the cutter 11 is chipped, the chip of the blade is detected by the detection sensor 14, and the driving of the cutter 11 is stopped. On the other hand, the chipped blade is sucked together with the paper dust by the dust collecting device and sent to the chipped blade capturing device 3. The chipping blade is attracted to the magnet 31 and captured by the chipping device 3. As an example, if the surface magnetic force of the magnet 31 is 12000 [G], the air volume passing through the enclosure 32 is about 28 [m / sec], and the diameter of the duct 14 is 75φ, the minimum weight of the metal piece that can be captured is 0. 0.02 [g], which is 4 [mm ^ 2] when converted into an area when the cutter 12 having a thickness of 0.15 [mm] is used. It is difficult to assume that the size is less than 4 [mm ^ 2] from the usage situation, and sufficient capture capability can be obtained with the above settings. The dust collector stops after a predetermined time has elapsed since the detection sensor 14 detects the chipping of the cutter 11. Since the chipping edge is reliably captured by the magnet 31 of the chipping edge capturing device 3, it is easy to find the chipping edge and reduce the burden on the operator. Therefore, the operation stop time of the packaging material cutting device 1 can also be shortened.

  The present invention is not limited to the above-described form and can be implemented in various forms. For example, in the present embodiment, the shape of the magnet 31 has been described as a cylindrical shape, but is not limited thereto. For example, a prismatic shape may be used. In FIG. 3, five magnets 31 are used. However, the number and size of the magnets 31 may be changed as appropriate according to the magnetic force of the magnets 31 and the size of the enclosure 32. The layout of the magnets 31 in the enclosure 32 is not limited to a staggered pattern, and may be arranged in a row or arranged to intersect, for example, and may be changed as appropriate. The magnet 31 is not limited to a permanent magnet, and may be an electromagnet. When the detection sensor 14 detects the chipping of the cutter 11, the control device 21 may control the electromagnet to act. Further, the capturing means is not limited to the magnet 31 and may be configured by a filter such as a mesh. In this case, when the detection sensor 14 detects the chipping of the cutter 11, the control device 21 may control the filter so that a filter capable of moving in and out of the duct 13 is installed in the duct 13. As the cutter 11, various known electric saws or the like may be applied.

DESCRIPTION OF SYMBOLS 1 Packaging material cutting device 2 Cutting unit 11 Cutter 12 Box 12a Duct connection port (suction port)
13 Duct 14 Detection sensor (detection means)
21 Control device (control means)
31 Magnet 100 Package 101 Can lid (object to be packed)
102 Packaging materials

Claims (2)

A cutter for incising the packaging material containing the packaging object;
A box having a suction port for sucking the inside and surrounding the cutter;
A dust collector connected to the suction port and sucking the inside of the box;
A capturing means that is provided between the suction port and the dust collector and captures a chipped edge of the cutter;
Equipped with a,
The cutter is made of a magnetic material, and the capturing means is an electromagnet;
Detecting means for detecting a chip of the cutter;
A packaging material cutting device comprising: control means for controlling to generate magnetic force by the electromagnet based on the detection result of the detection means . Examples capturing means, packaging materials lancing device according to claim 1 in which a plurality of electromagnets are arranged in a zigzag pattern along a direction transverse to the air flow direction by the suction.

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