JP2010280393A - Tape coil supporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape coil supporting device capable of enhancing the packing efficiency of an automatic packing machine by considerably reducing the number of components, simplifying its structure, and shortening the tape drawing-out time. <P>SOLUTION: The tape coil supporting device 21 rotatably supports a tape coil A with a tape a being roll-wound around an outer circumference of a paper tube 5. The diameter of a tape supporting pine 23 provided in a tape case 22 is set to be smaller than the inner diameter of the paper tube 5 in the tape coil A. The tape coil A can be oscillated with a part supported by the tape supporting pin 23 being a supporting point. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a packaging machine in which a package is wound with a thermoplastic tape and both ends of the tape are welded, and a tape coil for supplying a tape to be used in the packaging machine is disposed on the packaging machine. The present invention relates to a tape coil support device.

  An automatic packing machine for packing a package by winding it with a thermoplastic tape is widely used for packing work, as shown in FIG. The arch 2 is provided upright, and a cutting and welding mechanism 3 for the tape a is provided at the position between the both ends of the arch 2 in the table 1, and a feeding and returning mechanism 4 for the tape a is provided on the side thereof. With the mechanism 4 supplying the tape a from the entrance end to the inside of the arch 2 and placing the package on the table 1, the tip side of the tape a coming out from the exit end is cut and welded. The tape a is pulled back by the feeding / retracting mechanism 4 and the tape a is detached from the arch 2, the package is wound with the tape a, and then the cutting and welding mechanism 3 cuts the tape a and welds both ends. Is supposed to do .

  The tape a used in the automatic packing machine as described above is a tape obtained by rolling a long tape a around the outer periphery of the paper tube 5 as shown in FIGS. 5 to 7 using a thermoplastic synthetic resin sheet. In the form of a coil A, the tape coil A is attached to a tape coil support device 6 provided at a position on the tape supply side with respect to the tape feeding / returning mechanism 4 of the automatic packing machine. It is pulled out from the tape coil A.

  As shown in FIGS. 5 to 7, the conventional tape coil support device 6 supports a shaft 8 with a hook rotatably via a bearing 9 by a bracket 7 fixed to the table 1 of the automatic packing machine. 8 is connected to an electromagnetic brake 10 fixed to a bracket 7, and a pair of flanges 11 and 12 and a guide collar 13 positioned therebetween are attached to the other end of the shaft 8, The tape coil A is disposed between the front and rear flanges 11 and 12 with the guide collar 13 being externally fitted, and the tape coil A is attached to the shaft 8 by tightening the lock nut 14 screwed into the end of the shaft 8 and the elasticity of the guide washer 15. 8 (for example, see Patent Document 1).

  In the tape coil support device 6 described above, the guide collar 13 is formed in a cylindrical shape having an inner diameter that matches the outer diameter of the shaft 8 and an outer diameter that matches the inner diameter of the paper tube 5, and the shaft 8, the guide collar 13, and the tape coil. As shown in FIG. 6, the fitting of the paper tube 5 of A has a structure in which the tape coils A are sequentially closely fitted and attached to the shaft 8 in a coaxial arrangement.

  The process of loading the tape a into the arch 2 of the automatic packing machine is performed by pulling out the tape a from the tape coil A by feeding the tape a between the drive roller 4a and the feed roller 4b of the feed / retract mechanism 4. However, when the tape a is pulled out, the tape coil A rotates as indicated by the arrow in FIG. 5, and when the feeding out of the tape a is completed, the electromagnetic brake 10 is activated to stop the rotation of the tape coil A. To prevent the tape a from being pulled out.

Japanese Patent Laid-Open No. 2002-19718

  By the way, the above-described conventional tape coil support device 6 has a problem that the number of parts increases due to the use of the bearing 9 and the electromagnetic brake 10, the overall structure becomes complicated, and the manufacturing cost increases.

  Further, since the total number of parts is large, the stationary inertia of the tape coil A is increased by adding the weight of the parts, and it takes time to pull out the insufficient tape.

  Further, the force for pulling out the tape a by the driving roller 4a and the feed roller 4b is divided into a force for lifting the shaft 8 and a force for pulling out the tape a, and the distance between the action point and the force point when pulling out the tape a from the tape coil A is the shaft. The distance Y between the axis 8 and the outer diameter of the tape coil A, that is, the distance of the radius of the tape coil A cannot be set large. There is a problem in that force is required, it takes time to pull out the tape, and the packing cycle of the automatic packing machine becomes long.

  Therefore, the object of the present invention is to reduce the manufacturing cost by greatly reducing the number of parts and simplifying the structure, reducing the loss of the force for pulling out the tape, and shortening the time for pulling out the tape. An object of the present invention is to provide a tape coil support device capable of improving the efficiency.

  In order to solve the above-described problems, the present invention is a tape coil support device that rotatably supports a tape coil in which a tape is wound around the outer periphery of a paper tube, and the tape coil can be freely rotated on a fixed support member. A tape support pin is provided to support, and the outer diameter of the tape support pin is smaller than the inner diameter of the paper tube in the tape coil so that the tape coil can swing around the portion supported by the tape support pin. The distance between the tape drawing point on the outer periphery of the tape coil and the portion supported by the tape support pin is made larger than the radius of the tape coil.

  The fixed support member is formed of a tape case having a partially separated circumferential wall covering the outer periphery of the tape coil on the outer periphery of the circular end plate, and the tape support pin is on the same side as the circumferential wall of the tape case. Tape that is fixed so as to protrude in a horizontal arrangement, and that prevents the tape coil from coming off from the tape support pin in a state that allows the tape coil to be inserted into and removed from the tape support pin on the side where the circumferential wall of the tape case protrudes. It can be set as the structure which provided the stopper.

  Here, the tape case is provided with a mounting piece projecting on the outer periphery of a circular end plate having a diameter larger than that of the tape coil, and a circular wall separated by the mounting piece portion is provided on the outer periphery of one surface of the circular end plate. The mounting piece is fixed to the outer surface of the frame of the automatic packing machine.

  The tape support pin is formed by a stepped bolt provided with a head at one end of a shaft portion having a length corresponding to the width of the tape and a screw shaft having a smaller diameter at the other end, and has the same outer diameter as the head. With the bush to be fitted on the shaft, the screw shaft is inserted from one side into a long hole provided in the center of the circular end plate, and the nut screwed to the screw shaft from the other side of the circular end plate By fastening, the shaft portion is fixed so as to protrude to one surface side of the circular end plate.

  Therefore, the maximum outer diameter of the tape support pin is the head and bush. The maximum outer diameter is set smaller than the inner diameter of the paper tube, and the tape coil is suspended from the tape support pin at the inner diameter of the paper tube. To be installed on.

  The tape stopper is formed in a long plate shape and is attached to the outer surface of the frame of the automatic packing machine so that it can move up and down. The middle part of the tape stopper rests on the head of the tape support pin when lying down. Is prevented from coming out, and when it is in the standing position, it escapes outward from the outer diameter of the tape coil, and the tape coil can be taken in and out of the tape support pin.

  According to the present invention, since the tape coil is rotatably supported by the tape support pin provided on the fixed support member, it is possible to reduce the number of parts and reduce the manufacturing cost and to draw out the tape on the outer periphery of the tape coil. Since the distance between the point and the portion supported by the tape support pin is larger than the radius of the tape coil, the static inertia of the tape coil can be minimized and the pulling moment applied to the tape coil is large. Thus, since the tape coil swings with respect to the tape support pin when the tape is pulled out, the loss of pulling out the initial tape is reduced, and the tape loading time in the automatic packing machine can be shortened.

The longitudinal front view which shows the principal part structure of the packing machine using the tape coil support apparatus of this invention The exploded perspective view which shows the tape coil support apparatus of this invention Fig. 4 is an enlarged vertical side view of the tape coil support device according to the present invention in an assembled state. The state of the tape coil in the tape coil support apparatus of this invention is shown, (a) is explanatory drawing which shows the state before tape drawing, (b) is explanatory drawing which shows the state of tape drawing start, (c) is the state of tape coil Explanatory drawing which shows the processing state of the surplus tape produced by inertia rotation Longitudinal front view showing the main structure of a packaging machine using a conventional tape coil support device Expanded longitudinal side view of an assembled state showing a conventional tape coil support device An exploded perspective view showing a conventional tape coil support device

  Hereinafter, embodiments of the present invention will be described on the basis of attached screens. The structure of the automatic packing machine will be described using the same reference numerals as in FIG.

  FIG. 1 shows the overall structure of an essential part of an automatic packing machine using a tape coil support device according to the present invention. An arch cover 2a is fixed upright on a table 1, and the interior of the arch cover 2a is shown. The arch 2 is stowed upright, and a tape cutting and welding mechanism 3 is provided at a lower position between the lower cut-off portions of the arch 2 and a tape feeding and pulling mechanism 4 is provided on the side thereof, as is known. A tape coil support device 21 is provided outside the table 1 at a position on the tape supply side with respect to the tape feeding / retracting mechanism 4.

  The tape coil support device 21 includes a tape case 22 that is a fixed support member that is fixed to the table 1, a tape support pin 23 that is attached to the tape case 22 and rotatably supports the tape coil A, and the tape coil A. It is formed with a tape stopper 33 that prevents the tape support pin 23 from coming off.

  The tape coil A is formed by rolling a long tape a using a thermoplastic synthetic resin sheet around the outer periphery of the paper tube 5.

  The tape case 22 has a mounting piece 25 projecting from the outer periphery of a circular end plate 24 having a diameter larger than that of the tape coil A, and a circle separated at the outer peripheral surface of the circular end plate 24 by a portion of the mounting piece 25. A peripheral wall 26 is provided, and is fixed to the outer surface of the table 1 of the automatic packing machine by the mounting piece 25.

  2 and 3, the tape support pin 23 is provided with a head portion 28 at one end of a shaft portion 27 having a length corresponding to the width of the tape a and a screw shaft 29 having a one-step small diameter at the other end. A screw shaft 29 is formed from one side into a long hole 31 provided in the center of the circular end plate 24 with a bush 30 formed of a stepped bolt and having an outer diameter similar to that of the head 28 fitted on the shaft 27. The shaft portion 27 is fixed so as to protrude in a horizontal state on one surface side of the circular end plate 24 by tightening a nut 32 screwed into the screw shaft 29 from the other surface side of the circular end plate 24.

  The maximum outer diameter of the tape support pin 23 is a bush 30 fitted on the head portion 28 and the shaft portion 27. The maximum outer diameter is set smaller than the inner diameter of the paper tube 5, and the tape coil A is supported by the tape. The pin 23 is attached in a suspended manner with the inner diameter of the paper tube 5. Accordingly, since the tape coil A is only set by being suspended from the tape support pin 23, the tape coil A only has its own weight applied to the tape support pin 23, so that its static inertia can be minimized.

  Due to the structure of attaching the tape coil A to the tape support pin 23 as described above, the distance between the action point and the force point when the tape a is pulled out from the tape coil A is such that the upper contact point of the inner periphery of the paper tube 5 with respect to the pin 23 and the tape coil. The distance X between the outer diameters of A is always greater than the radius of the tape coil A, and the pulling moment applied to the tape coil A when the tape a is pulled out increases.

  Further, by setting the outer diameter of the tape support pin 23 to be smaller than the inner diameter of the paper tube 5, the tape coil A set in a suspended shape can swing with respect to the tape support pin 23, and the tape a By tilting the tape a in the pulling direction when pulling out the tape, the initial pulling force loss of pulling out the tape a is reduced, and for the above three reasons, the resistance when pulling out the tape a is reduced. Thus, the time for loading the tape into the automatic packing machine can be shortened.

  As shown in FIG. 1, the tape support pin 23 is fixed to the tape case 22 at an outer diameter of the tape coil A suspended on the tape support pin 23 and a circumferential wall 26 provided on the outer periphery of the circular end plate 24. The tape support pin 23 is set at a position displaced slightly above the center of the circular end plate 24 so as to be substantially concentric.

  The tape stopper 33 is formed in a long plate shape, and the lower end of the tape stopper 33 is pivotally fixed to the stopper base 34 fixed to the outer surface of the table 1 of the automatic packing machine by a screw 35 so that the circumferential wall 26 is opened with respect to the tape case 22. It is possible to move up and down on the surface side, and the bent concave portion 36 of the intermediate portion is placed on the head portion 28 of the tape support pin 23 when lying down, so that the taper case 22 is inclined to the open surface side of the circumferential wall 26. Thus, when the tape coil A is prevented from coming out of the tape support pin 23 and set to the standing position, the tape coil A escapes outward from the outer diameter of the tape coil A, and the tape coil A is allowed to be inserted into and removed from the tape support pin 23.

  The tape coil support device according to the present invention is configured as described above, and the tape coil A is attached in a suspended manner by externally fitting the paper tube 5 to the tape support pin 23 with the tape stopper 33 being vertical. As shown in FIG. 1, the tape a is drawn obliquely upward from the lower outer periphery of the tape coil A toward the automatic packing machine, and the tape stopper 33 is tilted down.

  The tape a pulled out from the lower position of the tape coil A is passed through the tape feeding / withdrawing mechanism 4 and the tape cutting / welding mechanism 3 of the automatic packing machine and inserted into the arch 2 from one end side. 2, the automatic packing machine wraps the object to be packed placed on the table 1 with the tape a by the operation of the feeding / withdrawing mechanism 4 and the cutting and welding mechanism 3, and cuts the tape a halfway. The object to be packed is packed by heat welding at both ends, and after the packing operation, the feeding / retracting mechanism 4 is operated, and the tape a is loaded over the entire length of the arch 2. Is pulled out from the tape coil A only.

  1 and 4 (a) show the initial state of the tape coil A before the tape a is pulled out, and since the tape coil A is set suspended from the tape support pin 23, the static inertia of the tape coil a is reduced. The distance X between the action point and the force point when pulling out the tape a from the tape coil A is always larger than the radius of the tape coil A, and the pulling moment applied to the tape a when pulling out the tape a is large. Become.

  FIG. 4 (b) shows an initial state of the tape a being pulled out, and the tape coil A is suspended from the tape support pin 23 and set to be swingable. By pulling in the pull-out direction, it tilts in the tape pull-out direction and the loss of initial force to pull out the tape a is reduced. For these reasons, by reducing the resistance when pulling out the tape a, The tape loading time to the automatic packing machine can be shortened.

  FIG. 4C shows a state when the drawing of the tape a is stopped, and the tape coil A rotates in the tape feeding direction due to inertia and the tape a is slackened. Since the circular wall 26 is accommodated in the peripheral wall 26 and has a circular arc, the slack portion a1 of the tape a is accommodated in the space between the outer periphery of the tape coil A and the inner periphery of the peripheral wall 26 without causing a crease. There is no hindrance to the tape drawing of the process.

  As described above, when the slack portion a1 is generated in the tape a after the tape a is pulled out, the next tape pull-out is pulled out from the slack portion a1, so that the load on the feeding and pulling mechanism 4 is greatly reduced in the initial stage of the tape pull-out. Thus, there is an advantage that the time for loading the tape into the automatic packing machine can be shortened.

a tape A tape coil 5 paper tube 21 tape coil support device 22 tape case 23 tape support pin 24 circular end plate 25 mounting piece 26 circumferential wall 27 shaft portion 28 head 29 screw shaft 30 bush 31 long hole 32 nut 33 tape stopper 34 Stopper base 35 Screw 36 Bent recess

Claims (2)

A tape coil support device that rotatably supports a tape coil in which a tape is wound around an outer periphery of a paper tube.
The fixed support member is provided with a tape support pin that rotatably supports the tape coil, and the outer diameter of the tape support pin can be swung around a portion where the tape coil is supported by the tape support pin. The tape coil is set to be smaller than the inner diameter of the paper tube in the tape coil, and the distance between the tape drawing point on the outer periphery of the tape coil and the portion supported by the tape support pin is larger than the radius of the tape coil. Support device.   The fixed support member is formed of a tape case having a partially separated circumferential wall covering the outer periphery of the tape coil on the outer periphery of the circular end plate, and the tape support pin is on the same side as the circumferential wall of the tape case. Tape that is fixed so as to protrude in a horizontal arrangement, and that prevents the tape coil from coming off from the tape support pin in a state that allows the tape coil to be inserted into and removed from the tape support pin on the side where the circumferential wall of the tape case protrudes. The tape coil support device according to claim 1, further comprising a stopper.

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