JP2021095138A - Fastening string collecting device - Google Patents

Abstract

To provide a fastening string collecting device capable of preventing a problem that suction failure of a cut fastening string occurs.SOLUTION: A fastening string collecting device 10 for cutting a fastening string for fastening an object to be fastened and collecting the cut fastening string, includes a cutting mechanism 20 that cuts a fastening string 110 that fastens an object to be fastened 100, and a suction collecting mechanism 30 for sucking and collects the fastening string cut by the cutting mechanism. The suction collecting mechanism is provided with a suction port member 31 having a suction port that is brought close to a position where the fastening string is wound on a side surface of the object to be fastened, and the suction port member forms an air flow introduction gap in the vertical direction including the downward direction in which the fastening string cut by the cutting mechanism hangs down when the suction port is closest to the side surface of the object to be fastened, and a gap formed by the side surface of the object to be fastened and the suction port member in the horizontal direction orthogonal to the vertical direction is configured to be narrower than the air flow introduction gap.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fastening string collecting device that cuts a fastening string for fastening an object to be fastened and collects the cut fastening string.

A binding string collecting device is known in which a binding string is wrapped around a plurality of articles to bind them, and after the plurality of articles are transported to a target position, the binding string is automatically cut and collected (for example, a patent). See Document 1).

Japanese Unexamined Patent Publication No. 08-230849

In the technique described in Patent Document 1 described above, a plurality of articles are bundled in the horizontal direction, a binding string is wound in the horizontal direction to bind the articles, and the binding string wound in the horizontal direction is cut and collected. There is. On the other hand, there are cases where a plurality of articles are laminated in the vertical direction and wound in the vertical direction to cut the binding string and suck the binding string for collection. In this case, when the binding string is cut, the binding string that tightly binds the plurality of articles is in a state of bouncing around the plurality of articles. When sucking the tied cord cut in such a form, even if the suction port is simply brought close to the periphery of the binding cord to suck, the air flow formed by the suction port acts well on the cut binding cord. There is a problem that the binding string cannot be made to move, the binding string is displaced from the suction port, suction failure often occurs, and the cut binding string cannot be reliably collected.

Further, when the suction failure as described above occurs, there is a problem that the cut binding string is entangled with other operating mechanisms or is transported to the next process while being attached to the unbound article. The worker always checks for suction failure, and if suction failure occurs in the binding string, it is necessary to stop the binding string collection device each time and manually collect the binding string that has not been sucked. , Deteriorate productivity. And, such a problem is not limited to the case of cutting a binding string for binding a laminate of a plurality of articles, and for example, an opening above one box is provided with a lid member for closing the opening. It may also occur when the fastening string wound around the lid member is cut and collected in order to keep the lid member closed.

The present invention has been made in view of the above facts, and the main technical problem thereof is to cut the fastening string for fastening the object to be fastened and to suck and collect the fastening string. It is an object of the present invention to provide a fastening string collecting device capable of preventing a problem that suction failure of the fastening string occurs.

In order to solve the above-mentioned main technical problem, according to the present invention, it is a fastening string collecting device that cuts the fastening string for fastening the object to be fastened and collects the cut fastening string, and fastens the object to be fastened. A cutting mechanism for cutting the fastening string and a suction collecting mechanism for sucking and collecting the fastening string cut by the cutting mechanism are provided, and the suction recovery mechanism is wound with the fastening string on the side surface of the object to be fastened. The suction port member is provided with a suction port member having a suction port that can be brought close to the position, and the suction port member is such that the fastening string cut by the cutting mechanism when the suction port is closest to the side surface of the object to be fastened. An air flow introduction gap is formed in the vertical direction including the hanging downward direction, and the gap formed by the side surface of the object to be fastened and the suction port member in the horizontal direction orthogonal to the vertical direction is for the air flow introduction. A fastening string collecting device configured to be narrower than the gap is provided.

The object to be fastened is a laminate in which a plurality of articles are laminated in the vertical direction, and the fastening string is preferably a binding string that binds the laminate. Further, at least two fastening strings are wound around the object to be fastened, and the cutting position at which the fastening string is cut by the cutting mechanism is opposite to the side surface on which the suction port is approached. It is preferable that the suction port is arranged for each fastening string.

Further, a suction source is connected to each of the suction ports via a connecting pipe, and the connecting pipe is provided with a fastening string passing sensor that detects whether or not the sucked fastening string has passed, and the fastening string is provided. When the passage sensor detects the passage of the fastening string, the suction source on the side to which the connecting pipe through which the fastening string has passed is connected can be stopped. Further, a knot is formed in the fastening string, and the knot may be positioned on the side surface side where the fastening string is cut in the object to be fastened and below the cutting position. ..

The fastening string collecting device of the present invention is a fastening string collecting device that cuts the fastening string that fastens the object to be fastened and collects the cut fastening string, and cuts the fastening string that fastens the fastened object. A mechanism and a suction / recovery mechanism for sucking and collecting the fastening string cut by the cutting mechanism are provided, and the suction / recovery mechanism is brought close to the position where the fastening string is wound on the side surface of the object to be fastened. A suction port member having a suction port is provided, and the suction port member is up and down including a downward direction in which the fastening string cut by the cutting mechanism hangs down when the suction port is closest to the side surface of the object to be fastened. A gap for introducing air flow is formed in the direction, and the gap formed by the side surface of the object to be fastened and the suction port member in the horizontal direction orthogonal to the vertical direction is narrower than the gap for introducing air flow. Therefore, the problem that the fastening string cut by the suction port cannot be reliably collected is prevented, and the problem that the productivity is deteriorated due to the suction failure of the fastening string is solved.

It is an overall perspective view of the device including the fastening string collecting device, the belt conveyor, the roller conveyor, and the extrusion mechanism of this embodiment. It is an enlarged perspective view which shows the suction recovery mechanism provided in the fastening string recovery device shown in FIG. 1. It is a top view of the whole perspective view shown in FIG. It is a top view which shows the mode which operates the extrusion mechanism and conveys a laminate to a fastening string recovery device. (A) is a plan view showing a mode in which a part of FIG. 4 is enlarged to operate a cutting mechanism to cut a binding string, and (b) is a side view of the embodiment of (a) as viewed from the side.

Hereinafter, embodiments of the fastening string collecting device configured based on the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a perspective view of the entire device including the fastening string collecting device 10, the belt conveyor 40, the roller conveyor 50, and the extrusion mechanism 60 of the present embodiment.

The belt conveyor 40 includes a drive mechanism 42 having a built-in electric motor, a gear mechanism, and the like, and a pair of transport belts 44, 44 rotated by the drive mechanism 42. FIG. 1 shows a laminate 100 exemplified as an object to be fastened according to the present embodiment, which is conveyed by a belt conveyor 40 in the direction indicated by the arrow R1. The direction indicated by the arrow R1 is the X-axis direction indicated by the arrow X in the drawing, and the direction indicated by the arrow Y, which is orthogonal to the X-axis direction and substantially defines the horizontal plane together with the X-axis direction, is the Y-axis direction. The direction indicated by the arrow Z orthogonal to the X-axis direction and the Y-axis direction (vertical direction) is defined as the Z-axis direction.

The laminate 100 is, for example, a plurality of corrugated cardboard sheets 102, which are articles for packing products, laminated in the vertical direction, and the binding string 110 exemplified as the fastening string of the present embodiment is wound in the vertical direction. It is bundled and bundled. In the laminate 100 of the embodiment shown in the figure, two binding strings 110 are wound in parallel at predetermined intervals and bound. Further, a knot 112 of the binding string 110 is formed at a predetermined position on the side surface of the laminate 100.

The roller conveyor 50 includes a plurality of rollers 52 and a stop plate 54 arranged at the end of the roller conveyor 50. The laminate 100 carried in by the belt conveyor 40 is placed on the roller conveyor 50, flows in the direction indicated by the arrow R2, and is stopped by abutting on the stop plate 54.

The extrusion mechanism 60 is arranged at a position facing the fastening string collecting device 10 with the roller conveyor 50 interposed therebetween. The extrusion mechanism 60 connects the support base 62, the extrusion plate 64, a pair of substantially L-shaped support plates 66 that support the extrusion plate 64 in the Y-axis direction, and the support plate 66 and the support base 62. The extrusion plate 64 is provided with a plate drive source 68 for moving the extrusion plate 64 in the Y-axis direction indicated by the arrow R3.

The fastening string collecting device 10 is attached to a pair of guide plates 12 and 12 having an L-shaped cross section and guide plates 12 and 12 that support the laminate 100 carried in by the extrusion mechanism 60 at both ends in the X-axis direction. It is provided with a cutting mechanism 20 for cutting the binding string 110 that binds the supported laminate 100, and a suction recovery mechanism 30 for sucking and collecting the binding string 110 cut by the cutting mechanism 20. In FIG. 1, for convenience of explaining the configuration of the present embodiment, wiring, piping, a transport mechanism for transporting the untied laminate to the next process, and each part for supporting the main parts of the invention are supported. The support mechanism, the drive source for driving each operating unit, and the like are omitted as appropriate. The guide plates 12, 12, the cutting mechanism 20, and the suction recovery mechanism 30 are directly or indirectly supported by the frame 14 constituting the framework of the fastening string recovery device 10, and the cutting mechanism 20 is supported by the cutting mechanism 20. The frame 14 is supported by a support bar 22 spanned in the X-axis direction.

The cutting mechanism 20 includes a pair of holding arms 24, 24 fixed to the support bar 22 and extending toward the roller conveyor 50 and bent downward on the way, and fusing portions 26, 26 provided at the tips of the holding arms 24, 24. And have. An electric heater is built in the tip of each fusing portion 26, and a gold trowel 28 having an acute angle at the tip and wide in the X-axis direction is arranged. By rotating (forward rotation, reverse rotation) the support bar 22 by a drive mechanism (not shown), the holding arm 24 can be rotationally moved in the direction indicated by the arrow R4 with the support bar 22 as the axial center.

FIG. 2 shows an enlarged perspective view of a main part of the suction recovery mechanism 30 located inside the frame 14 shown in FIG. The suction recovery mechanism 30 will be described with reference to FIG. 2 in addition to FIG. The suction recovery mechanism 30 includes a pair of suction port members 31, 31 and a support substrate 36 that supports each suction port member 31. The suction port member 31 includes a suction port main body 312 and a guide member 314 fixed to both side surfaces 312b of the suction port main body 312. In the suction port main body 312, the front surface 312a facing the laminate 100 is formed in a substantially square shape (for example, 100 mm × 100 mm), and at the center thereof, an inclination formed in an annular shape whose diameter gradually decreases from the front surface 312a. A suction port 31a having a surface 31b is formed. A connecting portion 32 is formed on the back surface side of the suction port main body 312, and the connecting portion 32 is fixed to the surface 36a of the support substrate 36 via the flange 33. The suction path starting from the suction port 31a of the suction port main body 312 reaches the connection pipe 38 connected to the back surface side 36b of the support substrate 36 via the connecting portion 32, the flange 33, and the support substrate 36, and is shown in FIG. As shown, it is connected to the fastening string storage box 39 via the connecting pipe 38.

The guide member 314 fixed to both side surfaces 312b of the suction port main body 312 is formed by, for example, pressing a stainless plate or an aluminum plate having a thickness of 2 mm, and as can be understood from FIG. 2, the cross section is omitted. It is formed in an L shape. The guide member 314 has a flat plate-shaped facing portion 314a extending in the vertical direction on the side facing the laminate 100 conveyed to the fastening string collecting device 10 in the attached state, and a support portion 314b forming a right angle with the facing portion 314a. To be equipped.

The support portion 314b of the guide member 314 is formed with elongated holes 314c and 314c extending in the Y-axis direction (horizontal direction) at two positions separated in the Z-axis direction (vertical direction) and having an opening on one side. There is. The guide member 314 is fixed to the side surface 312b of the suction port main body 312 by using a hexagonal screw 321 or the like through the elongated holes 314c and 314c. By adjusting the fixed position in the elongated holes 314c and 314c, it is possible to adjust the amount of protrusion of the facing portion 314a with respect to the front surface 312a of the suction port main body 312. In the present embodiment, in order to fill the inner space formed by the front surface 312a of the suction port main body 312 and the back surface of the facing portion 314a of the guide member 314, the thickness in the Y-axis direction is 4 mm and a thin vertically long prism. The gap member 34 of the above is interposed. As a result, when the guide member 314 is attached to the suction port main body 312, the protrusion amount of the facing portion 314a with respect to the front surface 312a of the suction port main body 312 is made uniform from the upper end to the lower end, and the protrusion amount is the set protrusion amount ( In this embodiment, it is exactly matched to 6 mm). When changing the amount of protrusion, the amount of protrusion can be set to a desired value by changing the amount of thickness of the gap member 34, depending on the thickness of the guide member 314 (2 mm) and the thickness of the gap member 34. The pair of suction port members 31 and 31 shown in FIG. 2 are the same members, and the mounting form of a total of four guide members 314 attached to the suction port members 31 and 31 is the same as the form described above. Therefore, the description of the mounting form of the other guide member 314 will be omitted.

Returning to FIG. 1, the description of the suction recovery mechanism 30 will be continued. A fastening string passage sensor 70 is arranged in the middle of the connecting pipe 38 that connects the suction port member 31 of the suction recovery mechanism 30 and the fastening string storage box 39. Although only one of them is shown in FIG. 1, as described with reference to FIG. 2, in the present embodiment, there are two binding strings 110 for binding the target laminate 100. , Two suction port members 31 are set, and the fastening string passing sensor 70 and the fastening string storage box 39 are arranged in each of the connecting pipes 38 connected to the two suction port members 31. As the fastening string passing sensor 70, for example, a well-known fiber sensor can be adopted. The fiber sensor is composed of, for example, a light emitting element and a light receiving element (not shown) arranged at opposite positions in the connecting tube 38 in order to detect the binding string 110 passing through the inside of the connecting tube 38. When the passage of the binding string 110 is detected, a signal is transmitted to the computer 80 that controls the operation of the fastening string collecting device 10.

The fastening string storage box 39 includes a pump main body 39a that serves as a suction source for sucking the cut binding string 110 from the suction port 31a, and a storage bucket 39b that houses the sucked binding string 110. The pump body 39a also serves as a lid for the storage bucket 39b. The operation of the pump body 39a is controlled by the computer 80, and the operation is started when the cutting mechanism 20 of the fastening string collecting device 10 is operated, and the binding string 110 cut by the cutting mechanism 20 is sucked into the connecting pipe 38. When the fastening string passage sensor 70 detects the passage of the binding string 110, it is stopped.

In addition to the pump body 39a described above, the computer 80 controls the entire operation of the fastening string collecting device 10 shown in FIG. 1, and also controls the operation of the belt conveyor 40, the extrusion mechanism 60, and the like.

The fastening string collecting device 10 of the present embodiment has substantially the same configuration as described above, and its operation will be described below with reference to FIGS. 3 to 5 in addition to FIG. 3 and 4 are plan views of the belt conveyor 40, the roller conveyor 50, the extrusion mechanism 60, and the fastening string collecting device 10 shown in FIG. 1 as viewed from above, and FIG. 5A is a binding string 110. It is an enlarged view of the main part of the plan view which is seen from above, and FIG. 5 (b) is a side view of the enlarged view of the main part shown in FIG. 5 (a) when viewed from the side. In FIGS. 3 and 4, for convenience of explanation, a part of the frame 14 is also omitted as appropriate.

As shown in FIG. 1, a laminate 100 in which a plurality of corrugated cardboard sheets 102 are laminated in the vertical direction and bound by two binding strings 110 is carried into a belt conveyor 40. The laminate 100 carried into the belt conveyor 40 is conveyed to the roller conveyor 50 by the belt conveyor 40 (direction of arrow R1), moves on the roller conveyor 50 in the X-axis direction (direction of arrow R2), and is shown in FIG. As shown, the conveyor abuts the stop plate 54 arranged at the end of the roller conveyor 50 and stops. The stop position at which the laminate 100 is stopped by the stop plate 54 is a position where the laminate 100 is extruded in the Y-axis direction by the extrusion mechanism 60.

As shown in FIG. 3, when the laminate 100 is stopped by the stop plate 54, the extrusion mechanism 60 is operated. More specifically, the plate drive source 68 of the extrusion mechanism 60 described with reference to FIG. 1 is operated to move the extrusion plate 64 in the direction indicated by the arrow R3 (Y-axis direction) as shown in FIG. , The laminate 100 is extruded toward the pair of guide plates 12 and 12 constituting the fastening string collecting device 10. As described above, the guide plate 12 has an L-shaped cross section, and supports the laminate 100 outside the winding position of the binding string 110 that binds the laminate 100 in the X-axis direction.

As shown in FIG. 4, the laminate 100 conveyed and supported on the guide plates 12 and 12 approaches the suction recovery mechanism 30, and the side surface of the laminate 100 is understood by referring to FIG. 2 as well. It hits the facing portion 314a of the guide member 314 constituting the suction port member 31 and stops. At this time, by adjusting the position of the suction recovery mechanism 30 in the Y-axis direction by a drive mechanism (not shown) and bringing it closer to the laminate 100 side, the facing portion 314a of the guide member 314 is placed on the side surface of the laminate 100. It may be brought into contact with each other.

As can be understood from the plan view of FIG. 5A and FIG. 2 in which the main part of FIG. 4 is enlarged, the binding string 110 is located at a position facing the suction port 31a and is the center of the suction port 31a. Is positioned across the vertical direction. Further, since the facing portion 314a of the guide member 314 protrudes a predetermined amount (6 mm) toward the laminate 100 side from the front surface 312a of the suction port main body 312, the side surface 100a of the laminate 100 and the front surface 312a of the suction port main body 312 An air flow introduction gap S1 (6 mm) is formed in the vertical direction of the space formed by the above. That is, since the suction port member 31 is provided with the guide member 314 described above, the air flow introduction gap S1 is formed in the vertical direction including the downward direction in which the binding string 110 cut by the cutting mechanism 20 hangs down. In the horizontal direction (X-axis direction) orthogonal to the vertical direction, the side surface 100a of the laminate 100 and the suction port member 31 more specifically, the side surface 100a of the laminate 100 and the facing portion 314a of the guide member 314. The gap S2 formed by the above is configured to be narrower than the air flow introduction gap S1 (S2 = 0 in this embodiment).

As shown in FIGS. 4 and 5A, when the suction port 31a is in the state of being closest to the side surface 100a of the laminate 100, the pump body 39a of the fastening string storage box 39 is operated to operate the connecting pipe. Negative pressure V is generated in the suction path including 38, and the cutting mechanism 20 is operated. The cutting mechanism 20 is operated to rotate the support bar 22, and the pair of fusing portions 26 are simultaneously lowered to heat each trowel 28 heated by the operation of the electric heater on the side opposite to the side surface 100a of the laminate 100. The binding string 110 located on the side surface 100b is brought into contact with the binding string 110 for a short time. In the present embodiment, the position where the trowel 28 comes into contact and the binding string 110 is cut is a position above the knot 112 of the binding string 110, as can be seen from FIG. 5 (b). When the gold trowel 28 comes into contact with the binding string 110 in this way, the two binding strings 110 formed of a resin such as vinyl are instantly melted and cut.

When the binding string 110 that binds the laminate 100 is cut, as shown in FIG. 5B, one end of the cut binding string 110'is vigorously separated from the cutting position. As it bounces upwards, the other end, where the knot 112'is left, hangs downwards. Here, a suction negative pressure V acts on the suction port 31a due to the operation of the pump body 39a of the fastening string accommodating box 39 described with reference to FIG. 1, and the suction described with reference to FIG. 2 is performed. An air flow is formed from the vertical air flow introduction gap S1 formed by the front surface 312a of the suction port main body 312 of the mouth member 31 and the side surface 100a of the laminate 100 toward the suction port 31a. As described above, one side of the cut binding string 110'is located above the laminate 100, and the other side hangs down to the lower side of the laminate 100, so that the air flow introduction gap S1 The cut binding string 110'is promptly sucked into the suction port 31a by riding on the air flow from above and below formed by, and is housed in the storage bucket 39b of the fastening string storage box 39. In the present embodiment, the gap S2 formed in the horizontal direction orthogonal to the vertical direction is made smaller (= zero) than the gap S1 for introducing the air flow formed in the vertical direction, so that suction is performed. The flow of air introduced into the port 31a is formed exclusively in the vertical direction, and the occurrence of suction failure is prevented.

In the above embodiment, the air flow introduction gap S1 is set to 6 mm, but it may be preferably set to 2 mm to 10 mm, more preferably to 4 mm to 8 mm. If the air flow introduction gap S1 is too narrow or too wide, an air flow for sucking the cut binding string 110'is not satisfactorily formed. Further, by setting the air flow introduction gap S1 to 4 mm to 8 mm as described above, the cut binding string 110'can be satisfactorily sucked, and the knot 112 passes through the air flow introduction gap S1 without being caught. Can be made to. Further, as described above, in the present embodiment, when the binding string 110 is cut by the cutting mechanism 20, the binding string 110 is cut at a position above the knot 112. As a result, the side where the knot 112 of the cut binding string 110'is left can be quickly hung downward, and the occurrence of suction failure can be further suppressed.

In the present embodiment, the side surface 100a of the laminate 100 is brought into contact with the facing portion 314a of the guide member 314, so that the air flow introduction gap S1 is formed in the horizontal direction (X-axis) orthogonal to the vertical direction. In the direction), the gap S2 formed by the side surface 100a of the laminate 100 and the suction port member 31 is set to zero (= 0). However, the present invention is not limited to this. For example, when the extrusion mechanism 60 is operated to bring the laminate 100 closer to the suction recovery mechanism 30, the side surface 100a of the laminate 100 and the side surface 100a of the laminate 100 are not brought into contact with the facing portion 314a of the guide member 314. A small gap S2 narrower than the air flow introduction gap S1 may be formed between the guide member 314 and the facing portion 314a. Even in that case, a large air flow can be formed from the vertical direction through the air flow introduction gap S1, and the cut binding string 110'is satisfactorily sucked from the vertical direction. It is possible.

By the way, in the above-described embodiment, the two binding strings 110 that bind the laminate 100 are cut substantially at the same time by the cutting mechanism 20, and each of them is cut by any of the two suction ports 31a and 31a arranged in the horizontal direction. Be sucked. At this time, when the binding string 110 is tightly bound, the cut binding string 110'may bounce excessively when it is cut by the cutting mechanism 20. In that case, although it is extremely rare, there is a possibility that the end of one of the cut binding strings 110'will reach the adjacent suction port 31a and be sucked. As described above, since the fastening string storage box 39 provided with the pump body 39a is connected to each of the suction ports 31a and 31a, the binding string 110'has two suction ports 31a and 31a. As a result, the suction of the cut binding string 110'may not be completed indefinitely.

Therefore, in the present embodiment, the connecting pipe 38 through which the binding string 110'suctioned by the suction port 31a passes is provided with the fastening string passing sensor 70, and the fastening string passing sensor 70 detects the passage of the binding string 110'. If so, the pump body 39a on the side to which the connecting pipe 38 through which the binding string 110'passes is connected is stopped. By doing so, one of the suction ports 110'that has not been sucked has both the suction port 31a corresponding to the binding string 110' and the other suction port 31a that has already normally sucked the binding string 110'. Avoids the problem of continued suction. It should be noted that the fastening string passing sensor 70 does not detect the passage of the binding string 110'until the binding string 110 is cut and the untied laminate 100 is conveyed to the next process in the fastening string collecting device 10. In this case, it is preferable to stop the pump main body 39a whose operation has been continued and to issue a warning (operate the buzzer, lamp, etc.) in order to notify the operator of the suction failure. When the binding string 110 is cut by the fastening string collecting device 10 and recovered normally, the untied laminate 100 is transported to the next step (corrugated cardboard sheet assembling step or the like).

According to the present invention, various modifications are provided without being limited to the above-described embodiment. In the fastening string collecting device 10 of the above-described embodiment, the two binding strings 110 in which the laminate 100 is wound in parallel at predetermined intervals are cut, and the cut binding strings 110'are provided with the corresponding two suction ports. The suction is performed by the member 31, but the present invention is not limited to this. For example, the opening above one box is provided with a lid member for closing the opening, and the lid member is closed. It can also be applied when the fastening string wound around for holding is cut and collected. Further, it can be applied to the case where the fastening string is cut and collected when the number of fastening strings is other than two. Further, the present invention is not limited to the case where the laminate 100 is bound in parallel by two binding strings 110 as in the above-described embodiment, and the laminate is bound so that the two binding strings are orthogonal to each other. It can also be applied to. Even in that case, the cut binding string can be sucked by positioning the suction port member 31 configured based on the present invention at a position corresponding to each binding string.

Further, in the above-described embodiment, the suction port member 31 is held in the gap formed by the suction port body 312, the guide member 314 formed separately from the suction port body 312, and the suction port body 312 and the guide member 314. Although it is composed of the gap member 34, the present invention is not necessarily limited to the suction port member 31 being composed of a plurality of members. For example, when the suction port main body 312 is molded from acrylic resin or the like, the shape realized by the guide member 314 and the gap member 34 in the above-described embodiment may be obtained by integral molding.

Further, in the above-described embodiment, the cutting mechanism 20 for cutting the binding string 110 is provided with a fusing portion 26, and the gold trowel 28 heated by the electric heater is brought into contact with the binding string 110 to cut the binding string 110. Is not limited to this, and other well-known means, for example, a means for blowing hot air to melt the cutting means, a metal cutter, or the like can be adopted as the cutting means constituting the cutting mechanism 20. When using a metal cutter, care should be taken to prevent the object to be fastened from being scratched by the cutter.

10: Fastening string recovery device 12: Guide plate 14: Frame 20: Cutting mechanism 22: Support bar 24: Holding arm 26: Fusing part 28: Gold iron 30: Suction recovery mechanism 31: Suction port member 31a: Suction port 31b: Inclined Surface 312: Suction port body 312a: Front surface 312b: Side surface 314: Guide member 314a: Opposing portion 314b: Support portion 32: Connecting portion 33: Flange 34: Gap member 36: Support substrate 38: Connecting pipe 39: Fastening string storage box 39a : Pump body 39b: Storage bucket 40: Belt conveyor 42: Drive mechanism 44: Conveyor belt 50: Roller conveyor 52: Roller 54: Stop plate 60: Extrusion mechanism 62: Support base 64: Extrusion plate 66: Support plate 68: Plate Drive source 70: Fastening string passing sensor 80: Computer 100: Laminated product (to be fastened)
102: Corrugated cardboard sheet 110, 110': Binding string (fastening string)
112, 112': Knot

Claims (5)

It is a fastening string collecting device that cuts the fastening string that fastens the object to be fastened and collects the cut fastening string.
It is provided with a cutting mechanism for cutting the fastening string to which the object to be fastened is fastened, and a suction recovery mechanism for sucking and collecting the fastening string cut by the cutting mechanism.
The suction recovery mechanism includes a suction port member having a suction port for sucking the fastening string cut when the fastening string is brought close to the position where the fastening string is wound on the side surface of the object to be fastened.
The suction port member forms an air flow introduction gap in the vertical direction including the downward direction in which the fastening string cut by the cutting mechanism hangs down when the suction port is closest to the side surface of the object to be fastened. At the same time, the fastening string collecting device is configured such that the gap formed by the side surface of the object to be fastened and the suction port member in the horizontal direction orthogonal to the vertical direction is narrower than the gap for introducing the air flow. The fastening string collecting device according to claim 1, wherein the object to be fastened is a laminated body in which a plurality of articles are laminated in the vertical direction, and the fastening string is a binding string for binding the laminated objects. At least two fastening strings are wound around the object to be fastened, and the cutting position at which the fastening string is cut by the cutting mechanism is the side surface opposite to the side surface on which the suction port is approached. The fastening string collecting device according to claim 1 or 2, wherein the suction port is arranged for each fastening string. In the fastening string collecting device according to claim 3, a suction source is connected to each of the suction ports via a connecting pipe, and it is detected whether or not the sucked fastening string has passed through the connecting pipe. A fastening string collecting device provided with a fastening string passing sensor, and when the fastening string passing sensor detects the passage of the fastening string, the fastening string collecting device stops the suction source on the side to which the connecting pipe through which the fastening string has passed is connected. A knot is formed in the fastening string, and the knot is located on the side surface side where the fastening string is cut in the object to be fastened and below the cutting position, or claim 3. The fastening string collecting device according to 4.

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