JP3122489U - Tape looping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently circularize a shrinkable film tape for the purpose of article covering.
When a drum 20 that rotates intermittently by 360 degrees in a constant cycle is stopped, a setting is made between a seal base 26 formed on the peripheral surface of the drum and a seal bar 38 disposed at a position facing the seal base. The tip of the tape 10 cut to length is fed out, the tip of the tape 10 is adsorbed by a suction hole 32 formed in the peripheral surface of the cylindrical drum, and the tape 10 is wound around the drum 20 by the rotation of the cylindrical drum 20. After the overlapping ends of the tape 10 are welded by pushing out the seal bar 38, the annular tape is carried out in the axial direction of the cylindrical drum 20 by the rotation of a roller 40 that contacts the annular tape.
[Selection] Figure 1

Description

  The present invention relates to an apparatus for efficiently circularizing a shrinkable film tape for the purpose of article covering.

  For example, in order to cover and protect a stoppered bottle mouth or an instant instant noodle container, many of these articles are covered with a heat shrinkable shrinkable tube. A shrinkable tube is cut in advance. In this way, in the case of cover materials for articles that are mass-produced through all seasons, it is possible to rely on the production system as described above, but it is reasonable that the smaller the number, the less reliable the production system.

  Therefore, in order to obtain the desired tape by supplementing the above conditions, it is common practice to form a cover tube by welding both ends of a shrinkable tape having a predetermined length. For example, what is disclosed in the following Patent Document 1 discloses a technique of winding a tape around a cylindrical article and binding the article with the tape. In general, production is maintained by repeating a process in which an operator winds a tape cut to a certain length around a cylinder and welds both ends thereof.

Japanese Utility Model Publication No. 62-197506

  The problem to be solved is that the diameter and width of the annular tape can be freely changed, but the production efficiency is poor and the cost is high.

  Accordingly, the present invention provides a cylindrical drum that rotates intermittently by 360 degrees at a constant cycle, a seal base that is formed on the peripheral surface of the drum when the drum is stopped, and a seal bar that is disposed at a position facing the seal base. A mechanism for feeding the leading end of the tape cut to a set length in between, and a suction hole formed in the peripheral surface of the cylindrical drum in the vicinity of the seal base; Means for winding the tape around the circumferential surface of the cylindrical drum by rotation, a mechanism for welding the two overlapping ends of the tape by pushing the seal bar onto the seal base, and the tape that has been circularized is in contact with the tape And means for carrying out the annular tape in the axial direction of the cylindrical drum by the rotational power of the roller.

  In order to further improve the efficiency, two sets of cylindrical drums that rotate intermittently at a 360 ° angle in a constant cycle, a seal base formed on each of the peripheral surfaces of the two drums, and a space between the two seal bases. And a mechanism for feeding the leading end of the tape cut to a set length by alternately changing the direction into two sets of gaps with the seal bar arranged on the seal bar, and formed on the peripheral surfaces of the cylindrical drums in the vicinity of the seal bases. Means for adsorbing the tip of the tape fed out by a suction hole and alternately winding the tape around the circumferential surface of the cylindrical drum by the rotation of each cylindrical drum; and alternating the seal bar to the two seal bases A mechanism that welds the overlapping ends of the tape by extrusion, and a rotational force of a roller that comes into contact with the tape that has been circularized, and the annular tape is moved in the axial direction Constituting a means for carrying out the.

  In these configurations, the tape is longer than the circumference of the cylindrical drum by the overlapping margin at both ends, so that the tip of the tape is reliably supplied to the seal base formed on the drum peripheral surface and the position opposite the seal base. Preferably, the tape is cut and supplied each time. When the drum is rotated once by 360 degrees to stop the tape, the overlapping ends of the tape are necessarily stopped between the seal bar and the seal base, and the welding by the seal bar becomes easy. Then, the conveyance of the annular tape from the drum is accelerated by the rotation of the roller immediately after that.

  In the apparatus whose side is shown in FIG. 2, a front base plate 16 and a rear base plate 17 for the tape track are arranged between the tape feeding roll 15 and the cylindrical drum 20, and between these two base plates. A cutting blade 18 and a blade pedestal 19 are installed, and a shrinkable tape 10 supported on the shaft 11 is fed toward the drum 20 by the feeding roll 15.

  As shown in the plane of FIG. 3, three linear rails 22 are installed on the upper surfaces of both the base plates 16 and 17 that are cantilevered on the wall of the machine base 21 so as to reduce friction with the tape 10. Take action to alleviate.

  That is, as shown in the cross section of FIG. 4, the contact area with the tape 10 is reduced by the installation of the linear rails 22, and the tip of the tape 10 is moved only by the rotational power of the feeding roll 15 as shown in FIG. , It is possible to feed the drum 20 to the arrangement position.

  As shown in FIG. 5, the valve plate 27 that is airtightly attached to the end face of the columnar drum 20 fixed to the shaft of the motor 25 installed on the machine base 21 is connected to the vacuum pump 29 and the compressor 30 via the switching valve 28. The drum 20 is intermittently rotated by 360 degrees by a driving force of the motor 25 by a driving force of the motor 25, and the tape 10 supplied as described later is wound around.

  That is, the circular valve plate 27 indicated by a dotted line in FIG. 1 includes a non-endless ring groove 31 on the contact surface with the drum 20, and a suction hole 32 formed in the drum circumferential surface is positioned at a cut portion of the ring groove 27. This is the normal stop position of the drum 20, and at the same time, the position where the embedded seal base 26 of the peripheral surface faces downward is the normal stop position.

  Therefore, at the timing when the tip of the tape 10 pushed out along the linear rail 22 reaches below the seal base 26 and the cutter 18 in FIG. 2 cuts the tape 10, the drum 20 in FIG. Start rotating.

  In FIG. 1, the suction hole 32 is connected to the vacuum ring groove 27 simultaneously with the rotation of the drum 20. As a result, the leading end of the tape 10 is attracted to the drum 20 through the suction hole 32, and the rotation of the drum 20 brings it to the circumferential surface. In this case, the tape 10 is brought into close contact with the peripheral surface of the drum 20 by extruding a substantially low-friction urging material 35 such as urethane rubber or a roller toward the tape 10 by the air cylinder 34. Will move.

  As shown in the development view of the drum shown in FIG. 6, the drum 20 is provided with a predetermined number of pin ports 36 on the peripheral surface in addition to the suction holes 32, and the suction force of the vacuum pump 29 acting on each pin port 36. As a result, the degree of adhesion of the entire surface of the tape 10 to the drum 20 is improved.

  The cutting length of the tape 10 by the cutting blade 18 in FIG. 2 is slightly longer than the circumferential length of the drum 20 in FIG. 1, and the tape 10 is then stopped integrally with the drum 20 with both ends overlapped. The seal bar 38 installed at the position is pushed out, and both ends of the tape 10 are welded 42 as shown in FIG.

  A plurality of rollers 40 supported by a frame 37 on both sides of the drum 20 in FIG. 1 are made of urethane rubber on a part of an endless belt 38 that is supported diagonally and supported by a plurality of pulleys as shown in FIG. Since the high friction material 39 is installed and formed, the rotation of the drum 20 in the direction of the arrow in FIG. 6 stops and at the same time the compressor 36 is connected to the ring groove 31 by the switching valve 28. Compressed air can be sent to and from the annular tape to form an air film, and the contact of the high friction material 39 that starts rotating in FIG. Thus, the removal of the annular tape from the drum periphery is completed.

  FIG. 8 shows an apparatus in which two sets of cylindrical drums 71 and 72 are arranged one above the other and the tape 70 is alternately circularized by the two drums 71 and 72. Both the drums 71 and 72 are the drums shown in FIG. The seal bar 76 fixed to the lever material 75 is supported on the shaft 77 and arranged between the seal bases 73 and 74 facing each other, while the pin 80 swings up and down around the shaft. A guide 81 is installed as means for alternately guiding the tip of 70 between the seal bar 76 and the two upper and lower drums 71 and 72.

  The suction holes 78 and 78 in both the drums 71 and 72 have the same configuration in which the vacuum pump and the compressor are connected through the ring groove 31 of the valve plate 27 in FIG. 1 and the pin port 36 on the drum peripheral surface. In addition, the configuration including the urging member 35 that prevents the tape from peeling off from the drum peripheral surface and a plurality of rollers that exclude the annular tape from the drum periphery is the same. The drums 71 and 72 are alternately used to improve efficiency.

  It enables not only circularization of shrinkable tape but also circularization of various types of weldable tape.

Side view of cylindrical drum Side view of the entire device Partial plan view of the device Front view of orbit base braid Partial plan view of the device Development view of drum and toilet bowl Slope view of annular tape Side view of the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 70 ... Tape 18 ... Cut blade 20, 71, 72 ... Cylindrical drum 26, 73, 74 ... Seal base 27 ... Valve plate 28 ... Switching valve 29 ... Vacuum pump 30 ... Compressor 31 ... Ring groove 32, 78 ... Suction hole 35 ... Biasing material 36 ... Pin port 38, 76 ... Seal bar 39 ... High friction material 40 ... Roller

Claims (5)

  A set length between a cylindrical drum that rotates intermittently by 360 degrees at a constant cycle, and a seal base that is formed on the peripheral surface of the drum when the drum is stopped and a seal bar that is disposed at a position facing the seal base. A mechanism that feeds the tip of the tape that has been cut to the surface, and a suction hole formed in the peripheral surface of the cylindrical drum in the vicinity of the seal base. Means for winding around the peripheral surface of the cylindrical drum, a mechanism for welding the two overlapping ends of the tape by pushing the seal bar onto the seal base, and rotation of a plurality of rollers in contact with the tape that has been circularized A device comprising means for carrying out the annular tape in the axial direction of the cylindrical drum by power.   Alternately, two sets of gaps between two sets of cylindrical drums that rotate intermittently at a 360 ° angle in a constant cycle, a seal base formed on each drum peripheral surface, and a seal bar disposed between the two seal bases. In addition, a mechanism for feeding the tape tips cut to a set length by alternately changing the direction, and the tape tips fed out by suction holes formed in the peripheral surfaces of the cylindrical drums in the vicinity of the seal bases. Means for alternately adsorbing and winding the tape around the circumference of the cylindrical drum by the rotation of each cylindrical drum, and a mechanism for welding the overlapping ends of the tape by alternately extruding the seal bar to the two seal bases And a means for carrying out the annular tape in the axial direction of the cylindrical drum by the rotational power of a plurality of rollers in contact with the tape that has been annularized. .   The apparatus according to claim 1 or 2, wherein a biasing member that prevents the tape that is attracted to the suction hole and wound around the cylindrical drum from being peeled off from the cylindrical drum is installed around the drum.   The connection between the vacuum pump and the suction hole opened in the drum is controlled through a valve plate arranged airtight on the end surface of the cylindrical drum, while the vacuum is also applied to the pin port opened in the drum peripheral surface through the valve plate. The apparatus according to claim 1 or 2, wherein the pump is connected. The vacuum line connecting the valve plate and the vacuum pump includes a switching valve,
The apparatus of Claim 4 which connects a pinhole and a compressor according to the timing which a roller carries out an annular tape in the axial direction of a cylindrical drum.