JP2005138857A - Packing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing apparatus smoothly delivering a band into a band guide. <P>SOLUTION: This packing apparatus is constituted by providing a band inlet 8 and a band outlet 9 at a part of the band guide 3 with a square frame-like shape through which an article to be packed is delivered, and by providing a pair of delivering rollers 10 facing the band inlet 8 and rotating positively and reversely. Between the band inlet 8 and the band outlet 9, a heater device 13 for heat-welding an apex part of the band B delivered out from the band outlet 9 and the band B from the delivering rollers 10 to the band inlet 8 by heating and pressing, and a cutter device 14 at a position deviated to a pair of the delivering rollers 10 from the heater device 13. By cutting the band B into a V-shape by this cutter device 14, the band B is prevented from clogging when the band B is delivered into the band guide 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a packing device for packing an object to be packed with a thermoplastic band.

  As shown in FIG. 9, the cardboard sheets S stacked on the pallet P are packed with a thermoplastic band B in order to prevent collapse of goods during transportation.

  As a packing device for packing an object to be packed such as a cardboard sheet together with a pallet by a band, a device described in Patent Document 1 has been conventionally known.

  In the packaging device described in the above-mentioned Patent Document 1, a band fed out from a winding roll by forward rotation of a pair of feed rollers is fed into a frame-shaped guide rod (guide guide), and inside the guide rod. The band is tightened by rotating the pair of feed rollers in a state where the band is wound around the outer periphery of the object to be packed that is conveyed and stopped, and the end of the band is welded and cut by the band joining device. ing.

  Here, although the guide rod is not shown in detail in Patent Document 1, it is configured to have a pair of opening and closing lids on both sides of the band guide plate, and when tightening the band inserted into the guide rod, The pair of opening / closing lids is opened by the pressing of the band, and the band passes through between the opposing portions of the pair of opening / closing lids to tighten the object to be packed. Since this guide rod has a rectangular frame shape surrounding the article to be packed, it cannot be integrated, and a plurality of divided guide rods are connected.

  The band joining device is not shown in detail in Patent Document 1, but generally comprises a heater device and a cutter device provided at a position slightly offset from the heater device toward the pair of feed rollers. In the heater device, the tip of the band and the overlapping portion of the band disposed outside the band are thermally welded by heating and pressurization. On the other hand, the cutter device cuts the outer band after the band is welded.

As shown in FIGS. 10I and 10I, a cutter device used for a band joining device is generally composed of a fixed blade plate 30 and a movable blade plate 31, and is formed at the tip of the fixed blade plate 30. A cutting blade 33 is formed at the opening edge on the band outlet side of the band insertion hole 32, while a cutting blade 34 is provided at the leading edge of the movable blade plate 31, and the movable blade plate 31 is used as the cutting blade 33 of the fixed blade plate 30. The band B inserted through the band insertion hole 32 is cut by the cutting blade 33 of the fixed blade plate 30 and the cutting blade 34 of the movable blade plate 31.
Japanese Patent Publication No. 55-51765

  By the way, in the conventional packing device, the cutter device that cuts the outer band after welding the overlapping bands is configured to cut the band linearly in the width direction. When the band is fed into the guide rod, the corner portion at the end of the band is often caught by the connecting portion of the divided guide rod and clogged, and the band cannot be fed smoothly.

  An object of the present invention is to provide a packaging device that can smoothly feed a band without causing clogging of the band in a hook-shaped band guide.

  In order to solve the above-described problems, in the present invention, a rectangular frame-shaped band guide having an opening / closing lid that is opened by tightening a band inserted thereinto in a conveyance path of an article to be packaged conveyed in one direction. The band guide guide is provided with a band introduction port and a band discharge port at an interval in the band feeding direction, the band is fed from the band introduction port into the band guide, and after tightening the band, the band discharge port In the packaging device in which the front end portion of the band fed from and the overlapping portion of the outer band are thermally welded, and the outer band is cut in the width direction by a pair of relatively movable blade plates, The structure which provided the inclined blade which inclines in the direction opposite to the both ends of the cutting blade of a pair of blade board was employ | adopted.

  Here, the inclined blade may be linear or arcuate.

  As described above, by providing inclined blades in opposite directions to both ends of the pair of blades in the pair of blade plates, the pair of blade plates are relatively moved to cut the heat-welded outer band. Inclined edges are formed at both ends of the cutting edge, and the leading edge of the band for packing the next article to be packed is V-shaped. For this reason, when the band is fed into the band guiding guide in order to pack the next item to be packed, the band can be smoothly fed without causing clogging of the band.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. As shown in FIG. 1, an article A to be packed in which a large number of cardboard sheets S are stacked on a pallet P is transferred by a first conveyor 1 and a second conveyor 2 connected to the first conveyor 1. It is conveyed in the direction of the arrow.

  A band guide 3 is provided between the discharge end of the first conveyor 1 and the supply end of the second conveyor 2.

As shown in FIG. 2, the band guiding guide 3 has a square frame shape having arcuate corner guides 4a at the four corners, and the article to be packed A can pass through the inside thereof. Provided between the upper straight guide L ₁ provided between the upper two corner guides 4 a of the band guide 3, the lower straight guide L ₂ provided between the lower _two corner guides 4 a and the upper and lower corner guides 4 a. Each of the two side straight guides L ₃ and L ₄ is composed of a plurality of divided guides 4 connected to each other.

  As shown in FIG. 4, the split guide 4 is provided with a pair of L-shaped opening / closing lids 6 on both sides of the band guide plate 5 so as to be freely opened and closed, and each opening / closing lid 6 is attached in a direction to be closed by a spring 6a shown in FIG. It is fast. The pair of opening / closing lids 6 are pressed and released by the band B toward the article to be packaged A when the thermoplastic band B inserted into the band guide 3 is tightened to the article to be packaged A. The band B comes out from between the facing portions of the pair of opening / closing lids 6.

As shown in FIG. 2, the band guide 3 is formed between the lower end of one side linear guide L ₃ and the upper end of one corner guide 4 a below it and the other corner guide on the right end and lower portion of the lower linear guide L _2. It is divided between the left ends of 4a. The upper band guiding guide 3a and the lower band guiding guide 3b are formed by the division, and the upper band guiding guide 3a is fixedly arranged. On the other hand, the lower band guide 3b is supported by the movable base 7 and is movable in a direction crossing the transport path of the packaged item A.

  The lower band guide 3b is set to a standby position (a position indicated by a chain line in FIG. 2) withdrawing from the conveyance path of the article A to be packed, and advances from the standby position to a position facing the conveyance path of the article A to be packed. Moved. The lower band guide 3b can be inserted into and removed from the fork insertion hole h of the pallet P that supports the article A to be packed.

One side linear guide L ₃ of the band guide ₃ is provided with a band introduction port 8 and a band discharge port 9 spaced apart from each other and positioned inward and outward of the band guide 3. Are provided.

  A pair of feed rollers 10 as a band feed device is provided above the band introduction port 8. The pair of feed rollers 10 can rotate forward and backward, and feeds the thermoplastic band B toward the band introduction port 8 during forward rotation.

  Below the band discharge port 9, a tip detection sensor S for detecting the tip of the band B is provided at a position inside the band introduction port 8. When the tip detection sensor S detects the tip of the band B, the pair of feed rollers 10 are stopped.

Between the band introduction port 8 and the band discharge port 9, a receiving member 11 is provided that receives the front end b ₁ of the band B extending from the band discharge port 9 to the front end detection sensor S. Further, between the band introduction port 8 and the band discharge port 9, a holding device 12 that holds the band B in a tightened state, a front end b ₁ of the band B that is held in a tightened state by the holding device 12, and the outside thereof. A heater device 13 that heats and pressurizes an overlapping portion of the outer band b ₂ disposed on the feeding portion side of the feeding roller 10 and heat-welds the overlapping portion at a position offset from the heater device 13 toward the pair of feeding rollers 10. A cutter device 14 for cutting the band b ₂ outside the bands b ₁ and b _{2 in} the width direction is provided.

As shown in FIG. 3, the holding device 12 is provided so as to be able to advance and retreat with respect to the receiving member 11 with the pressing member 15 disposed opposite to the receiving member 11, and with the front end b _{1 of the} band B by the advancement of the pressing member 15. The outer band b ₂ and the receiving member 11 are pressed.

The heater device 13 has a belt-like heater 16 provided so as to be able to advance and retract between the front end b ₁ of the band B and the opposed surface of the outer band b ₂ disposed outside thereof, and the receiving member 11. The pressure member 17 is provided so as to be able to advance and retreat. The heater 16 is moved forward so as to be disposed between the opposed surfaces of the front end b ₁ and the outer band b ₂ of the band B, and then the pressure member 17 is moved to the outer side. The band is moved forward to the band b ₂ side, and the pressure member 17 and the receiving member 11 hold the front end b ₁ and the outer band b _{2 of} the band B and the heater 16 from both sides, and the heater 16 overlaps the band B. Is heated and melted, the heater 16 is retracted, and the overlapping portion of the tip end b ₁ of the band B and the outer band b ₂ is thermally welded by pressurization of the pressure member 17.

As shown in FIGS. 3, 5, and 6, the cutter device 14 includes a blade plate holder 18 that is provided so as to be able to advance and retreat with respect to the receiving member 11, and a fixed blade that is attached to the tip of the blade plate holder 18. The plate 19 includes a movable blade plate 20 that is movable relative to the fixed blade plate 19 and cuts the outer band b ₂ with the fixed blade plate 19.

  The fixed blade plate 19 is formed with a band insertion hole 21 penetrating vertically at the front end located on the receiving member 11 side, and a guide groove 22 extending from the front end toward the rear end on the lower surface. The opening edge on the outlet side of the lower end band B is a cutting blade 23, and a pair of inclined blades 23b that are inclined in opposite directions via straight blades 23a are provided at both ends of the cutting blade 23.

  The straight blade 23a may be omitted, and the cutting blade 23 may be formed by a pair of inclined blades 23b provided at both ends.

  The movable blade plate 20 is attached to the upper surface of the tip of the pressure member 17 of the heater device 13 and moves together with the pressure member 17. The movable blade plate 20 has a protrusion 24 that can move along the guide groove 22 of the fixed blade plate 19 on the upper surface, and a cutting blade 25 is provided at the front edge of the protrusion 24. A pair of inclined blades 25b corresponding to the pair of inclined blades 23b of the fixed blade plate 19 are provided in the part via straight blades 25a.

  The inclined blades 23b and 25b may be linear or arcuate.

  Here, the pressurizing member 17 and the blade plate holder 18 may be moved back and forth linearly with respect to the receiving member 11, or may be moved back and forth in an arc shape. When the pressurizing member 17 and the blade plate holder 18 are moved forward and backward in a straight line, the guide groove 22 provided on the lower surface of the blade plate holder 18 is a straight groove. Arc shape.

  The packing apparatus shown in the embodiment has the above-described structure, and when packing the article A to be packed, the first band guide guide 3b of the band guide 3 is in a standby state in which it is retracted from the conveyance path of the article A to be packed. The article A to be packed is conveyed toward the second conveyor 2 by the conveyor 1.

  When the article A to be packed is carried into the upper band guide 3a of the band guide 3, the first conveyor 1 stops, and after that, the lower band guide 3b moves forward and the fork insertion hole of the pallet P is moved. inserted in h.

As shown in FIG. 2, when both ends of the lower band guiding guide 3b are connected to both ends of the upper band guiding guide 3a and stopped, the pair of feed rollers 10 rotate in the forward direction. The band B whose tip is inserted in advance into the band insertion hole 21 of the fixed blade plate 19 by the rotation of the pair of feed rollers 10 is fed into the band guide 3 from the band introduction port 8, and the tip of the band B When the portion b ₁ is sent out from the band discharge port 9 to the position of the tip detection sensor S and the tip detection sensor S detects the tip of the band B, the pair of feed rollers 10 stops.

At this time, the band B is arranged so that the front end b ₁ and the outer band b ₂ extending from the band insertion hole 21 to the band introduction port 8 are opposed to each other inside and outside.

  When the feeding of the band B is stopped, the blade plate holder 18 moves forward, and the fixed blade plate 19 that moves together with the blade plate holder 18 presses the tip end portion of the band B against the member 11.

When the leading end b ₁ of the band B is held between the fixed blade plate 19 and the receiving member 11, the pair of feed rollers 10 are rotated in the reverse direction, and the band B is tightened by the reverse rotation. When the band B is tightened, the pair of opening / closing lids 6 shown in FIG. 4 is pressed and released by the band B, and the band B comes out from the opening between the pair of opening / closing lids 6 and winds around the outer periphery of the packaged item A. It is said.

After the band B is tightened, the pair of feed rollers 10 stops and the heater 16 of the heater device 13 moves forward and is inserted between the front end b ₁ of the band B and the outer band b ₂ . Further, the pressing member 15 of the holding device 12 advances to the outer band b ₂ side and presses the front end b ₁ and the outer band b _{2 of the} band B against the receiving member 11.

After the pressing member 15 stops moving forward, the pressure member 17 of the heater device 13 moves forward to the outer band b ₂ side and presses the front end b ₁ and the outer band b ₂ of the band B against the member 11. At substantially the same time as the pressing, the heater 16 moves backward, and the front end b ₁ and the outer band b ₂ of the band B which has been melted by the heating of the heater 16 are welded by pressurization of the pressing member 15 and the receiving member 11. .

Further, when the pressurizing member 17 moves forward, the movable blade plate 20 moves together, and the outer band b ₂ is formed by a feed roller between the cutting blade 25 provided on the movable blade plate 20 and the cutting blade 23 of the fixed blade plate 19. 10 is cut in the width direction from the band introduction port 8.

  After the band B is cut, each of the pressing member 15, the pressing member 17, and the blade plate holder 18 is moved backward to return to the standby position shown in FIG. 3, and the article A to be packed is transferred to the first conveyor 1 and the second conveyor. 2 is carried forward.

  Here, when the band B is cut by the cutter device 14, both end portions of the cutting blades 23 and 25 formed on the fixed blade plate 19 and the movable blade plate 20 are respectively provided with straight blades 23 a and 25 a. Since the inclined blades 23b and 25b are provided, the cutting line (A) of the band B has a shape having inclined lines (B) at both ends as shown by a one-dot chain line in FIG. The tip edge of the band B that packs is substantially V-shaped.

  In addition, when it cut | disconnects with the cutting blades 23 and 25 which abbreviate | omitted the straight blades 23a and 23b, the front-end edge of the band B is made into V shape.

  For this reason, when the band B is fed into the band guide 3 by forward rotation of the pair of feed rollers 10 in order to pack the next article A to be packed, the band B may be caught at the connection portion of the band guide 3. Therefore, the band B can be smoothly fed without causing the band B to be clogged.

The side view which shows embodiment of the packaging apparatus which concerns on this invention Front view of the packaging apparatus shown in FIG. Partially cutaway front view showing an enlarged band joint of the packaging device shown in FIG. Sectional view along line IV-IV in FIG. Side view of the cutter device shown in FIG. Sectional view along line VI-VI in FIG. The disassembled perspective view which shows the fixed blade plate and movable blade plate of the cutter apparatus shown in FIG. Front view showing the shape of the cutting line of the band Perspective view of an item packed with a band The conventional cutter apparatus is shown, (I) is a partially cutaway front view, (II) is a longitudinal side view of (I).

Explanation of symbols

A Package 3 Band guide 6 Opening / closing lid 8 Band introduction port 9 Band discharge port 14 Cutter device 19 Fixed blade plate 20 Movable blade plate 23 Cutting blade 23b Inclined blade 25 Cutting blade 25b Inclined blade

Claims (1)

  A rectangular frame-shaped band guiding guide having an open / close lid that is opened by tightening a band inserted inside is provided in a conveyance path of an article to be packaged conveyed in one direction, and the band guiding guide and the band discharging guide are provided in the band guiding guide. An outlet is provided at an interval in the band feeding direction, the band is fed from the band introduction port into the band guide, and after tightening the band, the tip of the band fed from the band discharge port and the band outside the band In the packaging device in which the overlapping portion is thermally welded and the outer band is cut in the width direction by a pair of relatively movable blade plates, directions opposite to both ends of the cutting blades of the pair of blade plates A packaging apparatus, characterized in that an inclined blade is provided.

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