JP6333143B2 - Cutting device - Google Patents

Description

  The present invention relates to a cutting device that cuts a thin object such as a film or sheet, and more specifically, to a cutting device that cuts along a perforation provided in a film or the like.

  Conventionally, in the sale of fruits, vegetables, etc., a sheet-like film is put on the opening of the container, and the film is sold with the film attached to the container with an adhesive provided on the film. The film is usually used by drawing a necessary amount from a state of being wound in a roll. Examples of such a film cutting technique include those described in Patent Document 1 and Patent Document 2 below. The dispenser of Patent Document 1 includes a holding reel for holding a sheet-like patch such as a pack material wound in a roll shape, means for holding the holding reel, and a sheet-like patch pulled out from the holding reel. Includes a base having a temporary attachment base for cutting, and a means for braking rotation is provided on a holding reel or a roller that comes into contact with the sheet-like adhesive when the sheet-like adhesive is pulled out. Is prevented from being pulled out.

  Patent Document 2 below is a cutting device that transfers a cut object having flexibility, such as a flexible film, sheet, or film / sheet-like material, to a cutting blade with a roller, and the roller is narrow. A plurality of rotation shafts are provided so as to rotate in the vicinity of the cutting blade and feed the workpiece to the cutting blade, and a guide for transferring the workpiece to the cutting blade between the rollers. The guide body is formed from the upstream side to the downstream side of the cutting blade so that the tip of the sliding surface portion on which the sliding surface for sliding the object to be cut is formed is located in the vicinity of the cutting blade. Is formed over. The above-mentioned Patent Document 2 aims to cut a flexible object to be cut beautifully and accurately with an appropriate length by adopting the above configuration.

Utility Model Registration No. 3023781 JP-A-11-268716

  However, the background art as described above has the following problems. In Patent Document 1, an operator pulls out a sheet-like patch by hand, and cuts it by placing a protrusion on a perforation. For this reason, the operator has to pull out the sheet-like patch in a predetermined amount, which is not efficient and pulls the sheet-like patch if the projection is not accurately applied to the perforation position of the sheet-like patch. Sometimes, there is a problem that the sheet-like patch is torn without being cut at the perforation. In the technique described in Patent Document 2, a cutting blade is provided between the feed roller and the discharge roller. When the perforation or detection mark of the workpiece is detected by the sensor, the rotation of both rollers is temporarily stopped. The cutting blade is moved upward and cut. For this reason, a mechanism for moving the cutting blade up and down is required, and the configuration of the apparatus becomes complicated and the size is increased. In addition, the reel is rotated by a bearing, and when the roll diameter becomes smaller and lighter as the film is pulled out, there is a problem that the tension at the time of pulling changes and stable pulling out becomes difficult. .

  The present invention pays attention to the above points, and the film wound in a roll shape with a simple configuration is stably pulled out from the bobbin and cut at the perforation to improve work efficiency and downsize the apparatus. It is an object of the present invention to provide a cutting device capable of satisfying the requirements.

The present invention is a cutting device in which a film is wound around a bobbin in a roll shape, and the film drawn from the bobbin is cut by a cutting means, and has the following features.
(1) The film is formed with perforations that are substantially orthogonal to the pulling direction from the bobbin at a predetermined interval, and the film is drawn to the downstream side in the pulling direction with the film drawn from the bobbin interposed therebetween. Means, a second feed means disposed downstream of the first feed means in the drawing direction, and fed further downstream with the film interposed therebetween, the first feed means and the second feed means A driving mechanism for driving the feeding means; and a control means for controlling the driving mechanism. The control means drives the first feeding means and the second feeding means simultaneously to place the film. After the fixed amount feeding, the driving of the first feeding unit and the second feeding unit is stopped, and the driving of the first feeding unit is locked, and only the second feeding unit is driven and the film is moved. The drive mechanism is controlled to feed a predetermined amount. By, cut along the film perforations.
(2) In addition, it comprises a discharge detection means for detecting that the cut film has been discharged from the second feeding means, and the control means uses the discharge detection means to detect the first film If it is detected that the cut film is discharged from the second feeding means while the driving of the feeding means and the second feeding means is stopped, the first feeding means and the second feeding means are simultaneously driven. And the film is sent to the downstream side.

One of the main forms includes a reel that penetrates the hollow portion of the bobbin and exposes both ends thereof, and reel support means that rotatably and detachably supports both ends of the reel, and the reel A stopper biased in a direction in contact with the inner peripheral surface of the bobbin is provided on the outer peripheral surface of the bobbin, and the reel support means includes a plurality of support members arranged at predetermined intervals in the peripheral direction of the reel. It is characterized by supporting both ends of the.

  In still another embodiment, the reel support means includes marker detection means provided on each of a pair of opposing side surfaces, and detects markers formed on the film at predetermined intervals, and the first feeding means includes A first feed roller rotatably supported between the pair of side surfaces so as to be substantially orthogonal to the drawing direction, and a rotatable first sandwiching the film between the first feed rollers A second feed roller, wherein the second feed means is rotatably supported between the pair of side surfaces so as to be substantially orthogonal to the pull-out direction, and the second feed roller; A rotatable second pressing roller that sandwiches the film between the first rotating mechanism and the second rotating roller for simultaneously rotating the first feeding roller and the second feeding roller, and the second rotating mechanism. Only the feed roller of A second rotation mechanism, and when the marker is detected by the marker detection means, the control means feeds the film by a predetermined amount by the first feed roller and the second roller, and after these, The drive of the feed roller is stopped, the rotation of the first feed roller is locked, and only the second feed roller is rotated to feed the film by a predetermined amount, thereby cutting the film along the perforation. When the discharge detecting means detects that the cut film is discharged from the second feeding means, the simultaneous rotation of the first feeding roller and the second feeding roller is resumed. The first rotation mechanism and the second rotation mechanism are controlled.

  In still another embodiment, the discharge detection means detects the rotation of the second feed roller, and the control means is configured to stop driving of the first rotation mechanism and the second rotation mechanism. Detecting that the cut film is discharged from the second feeding means by detecting the rotation of the second feeding roller by the discharge detecting means.

  Still another embodiment is characterized in that it is provided at a position corresponding to the perforation of the film fed by a predetermined amount after the detection of the marker, and provided with a protrusion that can contact the perforation. In still another embodiment, the protruding portion protrudes from the first pressing roller and the second pressing roller toward the first and second feed rollers with respect to the first and second feeding rollers. Or (2) between the first feeding roller and the second feeding roller so that the tip protrudes toward the first and second pressing rollers from these feeding rollers. It is characterized by having been arranged in. Yet another embodiment is characterized in that the first rotating mechanism also has a clutch, thereby serving also as the second rotating mechanism. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, the reel that penetrates through the hollow portion of the bobbin that winds the film into a roll shape and both ends are exposed, the reel support means that rotatably and detachably supports the both ends of the reel, and the bobbin Cutting means for cutting the drawn film, and provided on the outer peripheral surface of the reel with a stopper biased in a direction in contact with the inner peripheral surface of the bobbin, and the reel support means is arranged in the circumferential direction of the reel. The both ends of the reel are supported by a plurality of supports arranged at predetermined intervals. For this reason, a film can be stably pulled out from a bobbin.

  Further, a first feeding means and a second feeding means for feeding the film, a driving mechanism for driving these feeding means, and a control means for the driving mechanism are provided. Then, after the film is fed by a predetermined amount by the first and second feeding means, the driving is stopped, and only the second feeding means is driven while the driving of the first feeding means is locked. Is cut along the perforation, it can be cut accurately at the perforation, and the apparatus can be downsized.

  In addition, the discharge detection means detects that the cut film has been pulled out by the operator, and then the simultaneous driving of the first and second feeding means is resumed, thereby reliably discharging the film. The next film can be cut. Furthermore, by providing a protrusion that can contact the perforation of the film at the cutting position, there is an effect that the film can be cut more easily.

It is an external appearance perspective view of the cutting device of Example 1 of the present invention. It is a perspective view which shows the state which opened the cover of the cutting device of the said Example 1. FIG. It is a figure which shows the reel and bobbin of the said Example 1. FIG. It is a figure which shows the reel support means of the said Example 1. FIG. 5A is a side view of FIG. 1 viewed from the direction of arrow FA, and FIG. 5B is a side view of FIG. 1 viewed from the direction of arrow FB. It is a figure which shows the effect | action of the said Example 1. FIG. It is a figure which shows the effect | action of the said Example 1. FIG. It is a figure which shows the effect | action of the said Example 1. FIG. It is a figure which shows the cutting device of Example 2 of this invention. It is a figure which shows the effect | action of the said Example 2.

  Hereinafter, the best mode for carrying out the present invention will be described in detail based on examples.

  First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is an external perspective view of the cutting apparatus of the present embodiment, and FIG. 2 is a perspective view showing a state in which the cover of the cutting apparatus is opened. FIG. 3 is a diagram showing the reel and bobbin of this embodiment, and FIG. 4 is a diagram showing the reel support means of the cutting apparatus of this embodiment. 5A is a side view of FIG. 1 viewed from the direction of the arrow FA, and FIG. 5B is a side view of FIG. 1 viewed from the direction of the arrow FB. 6-8 is a figure which shows the effect | action of a present Example. The cutting device 10 according to the present embodiment is a device that draws out a film covering an opening of a sales container such as a fruit with a predetermined length and cuts it along perforations.

  As shown in FIGS. 1 and 2, the cutting device 10 of this embodiment has a pair of side surfaces 12A and 12B and a bottom surface 14 that face each other, and a film roll 24 rotates between the side surfaces 12A and 12B. It is set as possible. As shown in FIG. 3A, the film roll 24 is a film in which a continuous film 28 is wound around a bobbin 23 in a roll shape, and a reel 26 is passed through a hollow portion of the bobbin 23. The reel 26 has a cylindrical shape, and a spring 27 is accommodated in the hollow portion 26A as shown in FIG. In the illustrated example, the spring 27 has a substantially U shape having a pair of arms 27A and 27B, and a convex portion 27C is formed on one arm 27A. The convex portion 27 </ b> C passes through a long hole 26 </ b> C formed along the axial direction of the reel 26 and protrudes from the outer peripheral surface 26 </ b> B of the reel 26. The spring 27 is urged outward by the arms 27A and 27B. For this reason, when the reel 26 is inserted through the hollow portion of the bobbin 23, the convex portion 27C comes into contact with the inner peripheral surface of the bobbin 23, and the bobbin 23 is not easily displaced from the reel 26, thereby preventing idling. As shown in FIG. 3B, the other arm 27B is also provided with a convex portion 27D, and a long hole 26D through which the convex portion 27D passes is formed in the reel 26, so that the bobbin 23 is contacted at two locations. You may make it do.

  The film 28 is provided with perforations 32 substantially orthogonal to the drawing direction of the film 28 at a predetermined interval. Adhesives 30A and 30B are provided in the vicinity of both edges of the back surface of the film 28 along the drawing direction. Further, on one side edge side of the film 28, markers 34 are provided at appropriate intervals. In the following description, the side on which the film roll 24 is set is described as the upstream side in the drawing direction of the film 28, and the cover 40 side provided with a plurality of rollers for feeding the film 28 is described as the downstream side in the drawing direction. To do.

  Supports 20A, 20B, 22A, and 22B that support the reel 26 so as to be rotatable and detachable are provided on the upstream side of the pair of side surfaces 12A and 12B. In this embodiment, as shown in FIGS. 1, 2 and 4, the supports 22A and 22B are rotatable rollers, and the other supports 20A and 20B are fixed to the side surfaces 12A and 12B. have. The distance between the supports 20A and 22A and the distance between the supports 20B and 22B are such that the reel 26 is rotatably received and the film shown in FIG. It is set appropriately so that it will not fall off even if it is lifted by tension by the 28 drawers. Even if a reaction is caused by stopping the drawing of the film 28, as shown in FIG. 4C, the support bodies 20A and 20B having slopes act as a brake, so that the reel 26 does not shift to the opposite side. Furthermore, even if the film roll 24 becomes smaller and lighter as shown in FIG. 4 (D) by continuing to pull out the film 28, the outer peripheral surface of the reel 26 is received at two points. Tension change can also be reduced. From these effects, the film 28 can be stably pulled out from the bobbin 23.

  Next, an internal frame 16 is provided on the downstream side of the cutting device 10 as shown in FIG. The inner frame 16 has an upper surface 16A and an inclined surface 16B. An openable / closable cover 40 is provided on the inner frame 16. As shown in FIG. 1, an outlet 70 for the film 28 is formed between the cover 40 and the apparatus bottom surface 14. At the lower edge of the outlet 70, as shown in the figure, a rod-shaped guide 36A inclined downward so that the cut film 28 does not fall and the adhesives 30A, 30B do not stick to a work table or the like. , 36B are provided.

  A first feed roller 50 for feeding the film 28 is arranged on the upper side of the inclined surface 16B of the inner frame 16 so as to be substantially orthogonal to the drawing direction of the film 28. The first feed roller 50 has a structure in which a plurality of roll bodies 54 are provided at the center of the outer periphery of the shaft 52 at appropriate intervals, and roll bodies 56 are provided at both ends. The shaft 52 is rotatably supported between the side surfaces 12A and 12B by a bearing (not shown). In the illustrated example, the roll bodies 56 at both ends use, for example, silicon sponge rollers so that the adhesives 30A and 30B provided on the film 28 do not stick.

  A second feed roller 60 is disposed below the slope 16B of the inner frame 16 and downstream of the first feed roller 50 so as to be substantially orthogonal to the drawing direction of the film 28. . The second feed roller 60 also has a configuration in which a plurality of roll bodies 64 are provided at the center of the outer periphery of the shaft 62 at appropriate intervals, and other roll bodies 66 to which the adhesives 30A and 30B are difficult to adhere are provided at both ends. It has become. The shaft 62 is rotatably supported between the side surfaces 12A and 12B by a bearing (not shown). A guide 72 is provided between the rolls on the inclined surface 16 </ b> A along a direction orthogonal to the shafts 52 and 56, that is, along a drawing direction of the film 28. By providing the guide 72, the film 28 is fed from the upstream side toward the downstream side without being recessed between the roll bodies arranged at intervals.

  On the other hand, as shown in FIG. 2, pressure rollers 120 and 130 are rotatably provided between the side surfaces 40 </ b> C and 40 </ b> D of the cover 40 inside the inclined surface 40 </ b> B of the cover 40. The pressing roller 120 has a plurality of roll bodies 126 at appropriate intervals on the outer periphery of the shaft 122, and both ends thereof are rotatably supported by bearings 124A and 124B. When the cover 40 is closed, the pressing roller 120 sandwiches the film 28 with the first feeding roller 50 and rotates in conjunction with the rotation of the first feeding roller 50. The other pressing roller 130 has a plurality of roll bodies 136 at appropriate intervals on the outer periphery of the shaft 132, and both ends thereof are rotatably supported by bearings 134A and 134B. When the cover 40 is closed, the pressing roller 130 sandwiches the film 28 with the second feeding roller 60 and rotates in conjunction with the rotation of the second feeding roller 60.

  As shown in FIGS. 1 and 2, the bearings 124 </ b> A and 124 </ b> B of the shaft 122 of the pressing roller 120 can slide along the long holes 128 </ b> A and 128 </ b> B provided in the side surfaces 40 </ b> C and 40 </ b> D of the cover 40. . Similarly, the bearings 134A and 134B of the shaft 132 of the pressing roller 130 are slidable along the long holes 138A and 138B provided in the side surfaces 40C and 40D. The bearings 124A and 134A are engaged with both ends of a spring 140A rotatable about a pin 142A, and one end side of the pressing rollers 120 and 130 is connected to the first feed roll 50 and the second feed. It is biased toward the roll 60. Similarly, both ends of a spring 140B rotatable about a pin 142B are engaged with the bearings 124B and 134B, and the other ends of the pressing rollers 120 and 130 are connected to the first feed roll 50 and the first feed roller 50, respectively. It is biased toward the two-feed roll 60.

  The cover 40 includes the magnets 118A and 118B facing both ends of the upper surface 16A of the inner frame 16 and the metal plates 46A and 46B provided on both ends inside the first surface portion 40A of the cover 40. The roller 50 and the second feed roller 60 are kept covered. A pressing roller 44 is provided on the rear portion 40 </ b> E side of the cover 40 so as to be substantially parallel to the first feeding roller 50 and the second feeding roller 60. A shaft 44A of the pressing roller 44 is rotatably supported between the side surfaces 40C and 40D of the cover 40. Therefore, when the cover 40 is closed, as shown in FIG. 4, the presser roller 44 is positioned between the film roll 24 and the first feed roller 50 and between the inner frame upper surface 16A. The film 28 is sandwiched.

  Inside the cover 40, a guide 144 is provided between the roll bodies along a direction orthogonal to the shafts 122 and 124, that is, along a drawing direction of the film 28. The guide 144 is provided at a position that does not overlap the guide 72 on the inner frame 16 side. By providing the guide 144, the film 28 is fed from the upstream side to the downstream side without being recessed between the roll bodies arranged at intervals.

  Furthermore, a light emitting unit 150A is provided inside the cover 40 at a position near the rear portion 40E. On the other hand, a light receiving portion 150B that receives light from the light emitting portion 150A is provided on one end side of the inner frame upper surface 16A. The light emitting unit 150A and the light receiving unit 150B constitute a first sensor 150. The first sensor 150 is for detecting the marker 34 of the film 28 drawn from the bobbin 23. The first sensor 150 is connected to the control unit 100 provided on the side surface 12B by a wiring (not shown). The controller 100 controls the driving of the first feed roller 50 and the second feed roller 60 based on the detection result of the first sensor 150.

  Next, drive mechanisms for the first feed roller 50 and the second feed roller 60 will be described. In the present embodiment, a first drive mechanism that drives the first feed roller 50 and the second feed roller 60 simultaneously and a second drive mechanism that drives only the second feed roller 60 are provided. First, the first drive mechanism will be described. As shown in FIG. 5 (A), a motor for rotating both the first feed roller 50 and the second feed roller 60 simultaneously on the lower side of the side surface 12A. 80 is provided. The rotating shaft 82 of the motor 80 penetrates the side surface 12A rotatably by a bearing (not shown). A spur gear 86 is provided at the tip of the rotating shaft 82. A spur gear 88 that meshes with the spur gear 86 and rotates about a shaft 88A is provided on the side surface 12A. Further, a spur gear 90 that meshes with the spur gear 88 is disposed above the spur gear 88. The spur gear 90 is joined to the shaft 52 of the first feed roller 50.

  For this reason, when the motor 80 is driven, the shaft 52 rotates through the rotating shaft 82 and the spur gears 86, 88, 90, and the first feed roller 50 rotates. Further, a spur gear 92 that meshes with the spur gear 88 is provided on the side surface 12 </ b> A on the side of the spur gear 88. The spur gear 92 is joined to the shaft 62 of the second feed roller 60. For this reason, when the motor 80 is driven, the shaft 62 is rotated via the rotating shaft 82 and the spur gears 86, 88 and 92, and the second feed roller 60 is rotated. That is, by driving the motor 80, the first feed roller 50 and the second feed roller 60 can be rotationally driven simultaneously. The motor 80 is connected to the control unit 100 by a code (not shown), and the drive of the motor 80 is controlled by the control unit 100.

  Next, a second rotation mechanism that rotates only the second feed roller 60 will be described. As shown in FIG. 5B, a motor 110 for rotating only the second feed roller 60 is provided below the inner side of the side surface 12B. The rotating shaft 112 of the motor 110 penetrates the side surface 12B rotatably by a bearing (not shown). A spur gear 114 is provided at the tip of the rotating shaft 112. A spur gear 116 that meshes with the spur gear 114 is provided on the side surface 12 </ b> B obliquely above the spur gear 114. The spur gear 116 is joined to the shaft 62 of the second feed roller 60. As a result, when the motor 110 is driven, the shaft 62 rotates through the rotating shaft 112 and the spur gears 114 and 116, and the second feed roller 60 rotates. The motor 110 is also connected to the control unit 100 by a cord (not shown) and the drive is controlled by the control unit 100.

  In this embodiment, since the two motors 80 and 110 are connected to the second feed roller 60 via gears, in order to rotate only the second feed roller 60, the motor The output must be switched using a clutch. In this embodiment, for example, a one-way clutch (not shown) is provided at both ends of the shaft 62 of the second feed roller 60, and when the motor 80 is rotated, the power is transmitted to the shaft 62, but the spur gear 116 is rotated. Instead, the spur gear 92 is prevented from rotating when the motor 110 is rotated. Accordingly, when the motor 80 is driven, the first feed roller 50 and the second roller 60 are simultaneously rotated, and when the motor 110 is driven, only the second feed roller 60 can be rotated.

  A second sensor 152 that detects the rotation of the second feed roller 60 is provided on the side surface 12B. The second sensor 152 detects the rotation of the second feed roller 60 by detecting the rotation of the impeller 154 provided at the end of the shaft 62 while the driving of the motor 110 is stopped. It is. The second sensor 152 includes a light emitting unit 152A and a light receiving unit 152B. When the rotation of the second feed roller 60 is detected while the motor 110 is stopped by the second sensor 152, the detection result is sent to the control unit 100, and the control unit 100 It is determined that the cut film 28 is discharged. The controller 100 controls driving by the motors 80 and 110 based on the detection results of the first sensor 150 and the second sensor 150. In addition, the switch 102 for switching ON / OFF of the power supply of this cutting device 10 is provided in the front side of the said side surface 12A as shown in FIG. The switch 102 is also connected to the control unit 100 by wiring. The control unit 100 is connected to an external power source (not shown) via a cord 96.

  Next, the effect | action of a present Example is demonstrated, referring FIGS. 6-8. 6 (A-1), (B-1), and FIG. 7 (A) are plan views, and FIGS. 6 (A-2), (B-2), and FIG. 7 (B) are side views. 8A to 8D are side views. First, the control unit 100 drives the motor 80 to rotate the first feed roller 50 and the second feed roller 60 simultaneously, pulls the film 28 from the bobbin 23, and feeds it to the outlet 70 side (downstream side). . The states shown in FIGS. 6A-1 and 6A-2 are immediately before the detection of the marker 34 by the first sensor 150. FIG. When the film 28 continues to be fed, the first sensor 150 detects the marker 34 (FIGS. 6B-1 and 6B-2). Then, a detection signal is sent to the control unit 100, and when the film 28 is fed out a predetermined amount L as shown in FIGS. 7A and 7B, the motor 80 is stopped.

  FIG. 8A shows an enlarged view of the state between the two rollers when the first feed roller 50 and the second feed roller 60 are stopped. Next, the control unit 100 locks the first feed roller 50 so as not to rotate, rotates only the second feed roller 60 by driving the motor 110, and feeds a predetermined amount of the film 28 to the second feed roller 60. Stop driving. Then, as shown in FIG. 8B, tension is applied to the film between the first feed roller 50 and the second feed roller 60, and the film 28 is sent as it is to the downstream side by a predetermined amount (for example, 2 to 3 mm), The film 28 is cut along the perforation 32 and sent to the downstream side (FIG. 8C), and the tip is discharged from the outlet 70. Up to this point, the controller 100 rotates, stops, and locks the first roller 50 and the second roller 60.

  Next, since the upstream side of the film 28 whose tip is discharged from the outlet 70 is still sandwiched between the second feed roller 60 and the pressing roller 130, as shown in FIG. Pull out by hand. At this time, the driving of the motor 110 is stopped, but the rotation of the second feed roller 60 is not locked, so that the second feed roller 60 rotates as shown in FIG. To do. When the control unit 100 receives the result of detecting the rotation of the second feed roller 60 from the second sensor 152 while the motors 80 and 110 are stopped, the control unit 100 has already been disconnected from the rotation amount of the second feed roller 60. It is determined whether the film 28 is completely discharged from the second feed roller 60 and the pressure roller 130. When it is determined that the film 28 has been completely discharged, the first feeding roller 50 and the second feeding roller 60 are simultaneously rotated again, and the film 28 is newly pulled out from the reel 26. That is, returning to the state shown in FIGS. 6A-1 and 6A-2, the above-described operation is repeated. The worker puts the film 28 having a predetermined length discharged from the outlet 70 on an opening of a fruit sales container or the like.

Thus, according to the first embodiment, there are the following effects.
(1) A convex portion 27C biased toward the inner peripheral surface of the bobbin 23 is provided on the outer peripheral surface of the reel 26 that passes through the hollow portion of the bobbin 23 that winds the film 28 in a roll shape. 26 idling is prevented. Further, both ends of the reel 26 are rotatably and detachably supported by the supports 20A, 20B, 22A, and 22B arranged at predetermined intervals in the circumferential direction of the reel 26. For this reason, the film 28 can be stably pulled out from the bobbin 23.
(2) A first feed roller 50 and a second feed roller 60 for feeding the film 28, motors 80 and 110 for rotating them, and a control unit 100 for controlling driving of the motor and the like are provided. When the first sensor 150 detects the marker 34, the first feed roller 50 and the second feed roller 60 feed the film 28 by a predetermined amount and stop. Next, with the rotation of the first feed roller 50 locked, only the second feed roller 60 is rotated to feed the film 28 by a predetermined amount. For this reason, the film 28 can be accurately cut along the perforation 32 without using a cutting blade or the like, and the size and cost of the apparatus can be reduced.
(3) The second sensor 152 (discharge detection means) detects that the cut film 28 has been pulled out by an operator, and thereafter the first feed roller 50 and the second feed roller 60 Simultaneous driving was resumed. For this reason, after the film 28 is reliably discharged, the next film 28 can be cut, and the film 28 is not clogged.

  Next, Embodiment 2 of the present invention will be described with reference to FIGS. 9 and 10. In addition, the same code | symbol shall be used for the component which is the same as that of Example 1 mentioned above or respond | corresponds. In the present embodiment, the configuration of the first embodiment described above is provided with a protrusion for further facilitating cutting along the perforation 32. As shown in FIG. 9A, in the cutting device 10A of the present embodiment, a protrusion 146 is attached to the inside of the second surface portion 40B of the cover 40. In the illustrated example, a quadrangular pyramid-shaped protrusion 146 is provided at the center between the pressing roller 120 and the pressing roller 130, and is fixed to the second surface portion 40B with a screw or the like (not shown). The protrusion 146 is used to facilitate the cutting of the film 28 with the perforation 34 and does not necessarily have a sharp tip. The tip of the protrusion 146 slightly protrudes toward the first feed roller 50 and the second feed roller 60 from the pressing rollers 120 and 130 as shown in FIG. 9B-2.

  The operation of the present embodiment is the same as that of the first embodiment up to FIG. 6, and when the first sensor 150 detects the marker 34 as shown in FIG. Part 100. As shown in FIGS. 9B-1 and 9B-2, the control unit 100 stops the motor 80 when the film 28 is fed out by a predetermined amount L. At this time, the protrusion 146 is located at a position where it hits the perforation 32 of the film 28.

  FIG. 10A shows an enlarged view of the state between the two rollers in a state where the first feed roller 50 and the second feed roller 60 are stopped. In this state, the tip of the projection 146 hits the perforation 32 of the film 28, but since both the first feed roller 50 and the second feed roller 60 are stopped, the film 28 is not tensioned and the projection 146 does not open film 28 from perforation 34. Next, the control unit 100 locks the first feed roller 50 so as not to rotate, rotates only the second feed roller 60 by driving the motor 110, and feeds a predetermined amount of the film 28 to the second feed roller 60. Stop driving.

  Then, first, as shown in FIG. 10B, tension is applied to the film 28 between the first feed roller 50 and the second feed roller 60, and the tip of the projection 146 bites into the perforation 32. When the film 28 is sent to the downstream side by a predetermined amount (for example, 2 to 3 mm) as it is, the film 28 is cut along the perforation 32 and sent to the downstream side (FIG. 10 (C)), and cut from the outlet 70. A part of the finished film 28 is discharged. After that, as shown in FIG. 10D, when the second sensor 152 detects the rotation of the second feed roller 60 accompanying the removal of the cut film 28 by the operator, the discharge of the cut film 28 is completed. The control unit 100 determines that there is a thing. Thereafter, the first feed roller 50 and the second feed roller 60 are simultaneously rotated again, and the film 28 is newly pulled out from the bobbin 23.

  According to the present embodiment, in addition to the effects of the first embodiment described above, by providing the protrusion 146 that can contact the perforation 32 of the film 28 fed by a predetermined amount after the detection of the marker 34 by the first sensor 150. The film 28 can be cut more easily. In the example of FIG. 9A, the protrusion 146 is provided on the cover 40 side. However, as in the cutting device 10B shown in FIG. The protrusion 148 may be attached so that the protrusion slightly protrudes from the first feed roller 50 and the second feed roller 60.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) The shapes, dimensions, and materials shown in the above-described embodiments are merely examples, and may be appropriately changed as necessary.
(2) The marker 34 of the above-described embodiment is also an example, and the position and interval thereof can be appropriately changed as necessary.
(3) The first sensor 150 that detects the marker 34 is also an example, and may be appropriately changed as necessary as long as the same effect is obtained. For example, either a reflective sensor or a transmissive sensor may be used.
(4) The second sensor 152 shown in the above embodiment is also an example, and various known sensors can be used as long as only the rotation of the second feed roller 60 can be detected. Further, the same effect can be obtained even if a sensor for detecting the passage of the cut film 28 is provided in the vicinity of the discharge port 70, not based on the rotation detection of the second feed roller 60.

(5) In the embodiment, a first drive mechanism that rotates the first feed roller 50 and the second feed roller 60 simultaneously and a second drive mechanism that rotates only the second feed roller 60 are provided. However, this is also an example, and one drive mechanism may also serve as the other drive mechanism by using a clutch or the like.
(6) The film 28 shown in the above embodiment is also an example, and the adhesives 30A and 30B are not necessarily required.

(7) The operation described in the above embodiment is merely an example, and can be appropriately changed as necessary. For example, in the first embodiment, it is detected that the operator has taken out the cut film 28, and the driving of the first feed roller 50 and the second feed roller 60 is resumed. This is also an example, for example, The film 28 after cutting may be automatically discharged by increasing the rotation time of the second feed roller 60 after the first feed roller 50 is stopped.
(8) In the above embodiment, the present invention is applied to cutting a film covering an opening of a sales container or the like for selling fruits. However, the present invention is applicable to cutting various other known films. Applicable.

  According to the present invention, the reel that penetrates through the hollow portion of the bobbin that winds the film into a roll shape and both ends are exposed, the reel support means that rotatably and detachably supports the both ends of the reel, and the bobbin Cutting means for cutting the drawn film. A stopper urged in a direction in contact with the inner peripheral surface of the bobbin is provided on the outer peripheral surface of the reel, and the reel support means includes at least two supports arranged at predetermined intervals in the circumferential direction of the reel. Both ends of the reel are supported by the body. For this reason, a film can be stably pulled out from a bobbin and can be applied to the use of a cutting device. Moreover, since a film can be cut | disconnected by control of a feeding means, without using a cutting blade, it can apply to the use of a small cutting device. In particular, it is suitable for the use of the apparatus for cut | disconnecting the film which covers opening parts, such as sales containers, such as fruit and vegetables.

10, 10A, 10B: Cutting device 12A, 12B: Side surface 14: Bottom surface 16: Internal frame 16A: Top surface 16B: Slope 20A, 20B, 22A, 22B: Support body 23: Bobbin 24: Film roll 26: Reel 26A: Hollow part 26B: Outer peripheral surface 26C, 26D: Long hole 27: Spring 27A, 27B: Arm 27C, 27D: Convex portion 28: Film 30A, 30B: Adhesive 32: Perforation 34: Marker 36A, 36B: Guide 40: Cover 40A: First surface portion 40B: Second surface portion 40C, 40D: Side surface 40E: Rear portion 42: Shaft 44: Pressing roller 44A: Shaft 46A, 46B: Magnet 50: First feeding roller 52, 62: Shaft 54, 56, 64, 66: Roll body 60: Second feed roller 70: Pull-out port 72: Guide 80: Motor 82: Rotating shaft 6, 88, 90, 92: spur gear 88A: shaft 96: code 100: control unit 102: switch 110: motor 112: rotating shaft 114, 116: spur gear 118A, 118B: magnet 120, 130: pressure rollers 122, 132 : Shafts 124A, 124B, 134A, 134B: bearings 126, 136: roll bodies 128A, 128B, 138A, 128B: elongated holes 140A, 140B: springs 142A, 142B: pins 144: guides 146, 148: projections 150: first Sensor 150A: Light emitting unit 150B: Light receiving unit 152: Second sensor 152A: Light emitting unit 152B: Light receiving unit 154: Impeller

Claims (8)

A film is wound around a bobbin in the form of a roll, and is a cutting device that cuts the film drawn from the bobbin with a cutting means ,
The film is formed with perforations that are substantially orthogonal to the pulling direction from the bobbin at a predetermined interval.
First feeding means for feeding the film drawn from the bobbin to the downstream side in the drawing direction;
A second feeding means which is disposed downstream of the first feeding means in the drawing direction, and which feeds further downstream with the film interposed therebetween;
A drive mechanism for driving the first feeding means and the second feeding means;
Control means for controlling the drive mechanism;
A discharge detecting means for detecting that the cut film is discharged from the second feeding means;
The control means includes
After the first feeding means and the second feeding means are simultaneously driven to feed the film by a predetermined amount, the driving of the first feeding means and the second feeding means is stopped, and the first feeding means While cutting the film along the perforation by controlling the drive mechanism to drive only the second feeding means and feed the film by a predetermined amount while locking the drive of
If it is detected by the discharge detection means that the cut film is discharged from the second feed means while the driving of the first feed means and the second feed means is stopped, the first feed The cutting apparatus characterized by restarting the simultaneous driving of the means and the second feeding means and feeding the film to the downstream side .   A reel that penetrates the hollow portion of the bobbin and that is exposed at both ends;
  Reel support means for rotatably and detachably supporting both ends of the reel;
With
  Provided on the outer peripheral surface of the reel with a stopper biased in a direction in contact with the inner peripheral surface of the bobbin,
  The cutting apparatus according to claim 1, wherein the reel support means supports both ends of the reel by a plurality of support bodies arranged at predetermined intervals in the circumferential direction of the reel. The reel support means is provided on each of a pair of opposing side surfaces;
With marker detection means for detecting markers formed at predetermined intervals on the film,
The first feeding means is
A first feed roller that is rotatably supported between the pair of side surfaces so as to be substantially orthogonal to the drawing direction, and a rotatable first press that sandwiches the film between the first feed roller. Including rollers,
The second feeding means is
A second feed roller supported rotatably between the pair of side surfaces so as to be substantially orthogonal to the pull-out direction, and a second second press capable of sandwiching the film between the second feed roller Including rollers,
The drive mechanism is
A first rotation mechanism for simultaneously rotating the first feed roller and the second feed roller;
A second rotating mechanism for rotating only the second feed roller;
Including
The control means includes
When the marker is detected by the marker detection means, after feeding the film by a predetermined amount by the first feed roller and the second roller, the drive of these feed rollers is stopped,
While locking the rotation of the first feed roller, by rotating only the second feed roller and feeding the film by a predetermined amount, the film is cut along perforations,
When it is detected by the discharge detection means that the cut film has been discharged from the second feed means, the first feed roller and the second feed roller are restarted so that the simultaneous rotation of the first feed roller and the second feed roller is resumed. 3. The cutting apparatus according to claim 2, wherein the first rotation mechanism and the second rotation mechanism are controlled. The discharge detection means detects rotation of the second feed roller;
The control means includes
While the driving of the first rotation mechanism and the second rotation mechanism is stopped, by detecting the rotation of the second feed roller by the discharge detection means, the cut film is removed from the second feed means. 4. The cutting device according to claim 3 , wherein the cutting device is determined to have been discharged. A protrusion that is provided at a position corresponding to the perforation of the film fed by a predetermined amount after the detection of the marker;
The cutting device according to claim 3 or 4 , characterized by comprising: The protrusion,
Between said first pressing roller and the second pressing roller, according to claim 5, wherein said than these pressing roller tip to the first and second feed roller side is characterized by being arranged so as to project Cutting device. The protrusion,
Between the second feed roller and the first feed roller, according to claim 5, wherein said than these feed rollers distal to the first and second pressing roller side is characterized by being arranged so as to project Cutting device. The cutting device according to any one of claims 3 to 7 , wherein the first rotating mechanism also has a clutch, thereby serving also as the second rotating mechanism.

Images