JP2003231513A - Binding string removing method and binding string removing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact device capable of quickly unbinding a binding string in the case where containers to be transferred are bound with a string. <P>SOLUTION: The device includes: a photoelectric sensor 10 for detecting whether articles 3 on a transfer unit 2 are arranged in a plurality of rows and columns and formed into a bound body 4 integrated by being bound with a string 6; a stopping means 20 adapted to stop the transfer of an article row 3', which is a part of the bound body, when the articles 3 are detected to be the bound body; a string holding means 30 adapted to hold the binding string stretched across a deviated space 5b defined between the article row whose transfer is stopped and an article row 3" which is being kept in the state of transfer; a string cutting means 40 adapted to cut the binding string stretched across the deviated space 5a; and a string discharge means 50 for discharging the binding string held by the string holding means 30 outside a transfer path. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting whether or not a plurality of articles to be conveyed are in a bundled state, and if the plurality of articles are bundled, cutting the bundled string and removing it. Regarding the device.

[0002]

2. Description of the Related Art A collection container containing a predetermined number of beer bottles and the like is loaded on a truck in a state of being arranged in a plurality of rows and a plurality of columns and stacked in a plurality of stages. After being transported in a bound state, loaded and unloaded from a truck or the like, they are transported to a predetermined processing step by a transport device and processed for each individual container. On this occasion,
Some containers to be processed are in a state of being bound by a string, so it is necessary to judge the presence of a binding string, and if there is a binding string, cut it and remove it. Japanese Patent Application Laid-Open No. 52-8
8487, JP-A-53-93983, JP-A-3-124531, JP-A-10-72023, and JP-A-11-263326. These devices are arranged in a plurality of rows and a plurality of columns, stacked and stacked in the uppermost stage in the process of transporting the container assembly by a transport device, or in the processing step for processing each individual container, The side wall is scanned in the vertical direction to detect the presence or absence of a binding cord, and when the binding cord is detected, the transport device is stopped and the binding cord is cut and removed while being held in a tensioned state.

[0003]

However, since these devices scan the stacked container assemblies in the vertical direction, the cross rails and the like provided on the outer wall of the container are erroneously detected as binding cords. There were times when it happened. In addition, the binding cord cannot be reliably cut and removed, which may cause a problem in a subsequent process. Therefore, it is an object of the present invention to provide a binding string removing method and a device used therefor, which can reliably remove a binding string when an aggregate of conveyed articles is bound by a string.

[0004]

In the method for removing a binding cord according to the present invention, the object to be conveyed on the conveying device has an article row in which at least one article having substantially the same shape is arranged along a direction orthogonal to the conveying direction. A determining step of determining whether or not the binding body is obtained by winding and binding a plurality of binding cords around a plurality of aligned rows, and at least one of the binding bodies when the binding body is determined.
A stopping step of stopping the conveyance of one article row, a string holding step of holding a binding cord stretched over a deviation portion generated between the stopped article row and the article row to be conveyed, and the deviation portion A string cutting step of cutting the binding string stretched over the
The cord discharging step of discharging the held binding cord to the outside of the conveying path of the conveying device is sequentially performed.

According to this structure, even if there is an object in the state of being bound with a cord (that is, a binding body), it can be detected and the binding cord can be surely removed. become. Further, in the above method for removing a binding cord, a transportation stop step of stopping the transportation device is included between the stopping step and the string holding step, and the transportation resumption of operating the transportation device is performed after the string cutting step. You may include a process. According to such a configuration, a shift portion is generated between the stopped article row and the article row to be conveyed, and the conveyance of the bound body is stopped in a state where the binding cord is stretched over the shift portion. Therefore, the binding cord can be securely held and cut.

Further, the above-mentioned binding string removing method is a method of cutting and removing the binding string bound in at least one step of a plurality of articles of substantially the same shape stacked in a plurality of steps, and for each set of articles in the same step. Alternatively, the binding cords may be removed from the collection of articles on the transport device after being collectively supplied to the transport device. According to such a configuration, in the case of processing an aggregate of articles stacked in a plurality of stages and bound in a predetermined stage, the article aggregates of the same stage are collectively supplied to the conveying device, and the article aggregate is bundled. It is determined whether or not it is, and the binding cord is removed only when it is determined to be a bound body, so that the processing of the article is made efficient. Further, since the stacked articles are conveyed step by step, the bulkiness of the conveying device and the device for removing the binding cord can be reduced.

In the binding string removing apparatus according to the present invention, a plurality of article rows, in which at least one article having substantially the same shape is lined up, are arranged along the conveying device on the conveying apparatus and are bundled around the periphery. Judgment means for deciding whether or not the bundle is an integrated body by winding a string, and stop means for stopping conveyance of at least one article row of the bundle when it is judged as the bundle. And a string holding means for holding a binding cord stretched over a shift portion generated between the stopped article row and an article row to be conveyed, and cutting the binding cord stretched over the shift portion. A string cutting means, and a string discharging means for discharging the held binding string to the outside of the transport path of the transport device,
It is configured to include.

With this configuration, it is determined whether or not the object to be conveyed is a bundle, and when it is determined to be a bundle, the conveyance of at least one article row of the bundle is stopped, and the stopped article row is stopped. A gap is formed between the article and the article row to be conveyed, and the binding cord is stretched over the gap. Then, the binding string in the stretched state is held by the string holding means, the held binding string is cut by the string cutting means, and the cut binding string is discharged to the outside of the conveying path by the string discharging means. With this, when the bundle is present in the object to be conveyed, the binding string can be reliably removed.

Further, in the above-mentioned binding string removing device, the carrying device is constructed so that the carrying speed is increased from a predetermined point of the carrying path, and the article line of the carrying object placed on the carrying device is , A plurality of articles are arranged, and the determination means detects whether or not a space has occurred between the articles in the article row of the conveyance target by passing through the predetermined point of the conveyance path, It may be configured to determine whether or not the transport target is the bundle based on the detection result.

According to this structure, when the object to be conveyed is a bound body, the article row remains in close contact even when it passes through the predetermined point, but when it is an unbound body, it passes through the predetermined point. At this time, a space is generated between the articles. This makes it possible to reliably determine whether or not the bundle is a bundle by detecting whether or not a space is generated between the articles. Further, in the above-mentioned binding string removing device, the determination means detects whether or not a binding string is wrapped around the object to be conveyed by image processing, and the object to be conveyed is the bundle based on the detection result. It may be configured to determine whether or not there is. According to such a configuration, whether or not the binding cord is wrapped around the object to be conveyed is detected by image processing, so that the presence or absence of the binding cord can be reliably determined.

Further, in the above-mentioned binding string removing device, the string holding means has a hook-shaped hooking portion, and the hooking portion interposes the shift portion formed on the upstream side in the conveying direction of the binding body, It is also possible to lock the binding cord stretched over the offset portion. According to this structure, the hook-shaped hooking portion holds the binding cord stretched over the shift portion generated on the upstream side in the transport direction of the binding body, so that the binding cord can be reliably held. Further, since the string holding means is located on the upstream side in the transport direction of the bound body, the unbound state of the bound body is released to the downstream side before the string holding means has retreated from the transport path. Therefore, it is possible to carry the material and the processing efficiency is improved.

Further, in the above-mentioned binding string removing device, the string cutting means cuts the binding string stretched over the shift portion formed on the side opposite to the side on which the string holding means holds the binding string. I decided. According to this structure, since the cord holding means cuts the binding cord at the shift portion on the side opposite to the side holding the binding cord, the cut binding cord is held by the cord holding means at the substantially central portion thereof. It will be. As a result, the binding string can be stably held, and not only gripping and pinching but also a holding mode such as locking or hooking can be adopted.

Further, in the above-mentioned binding string removing device, the string discharging means is a reel device for winding the binding string held by the string holding means, and a movement for moving the reel device to the outside of the carrying path of the carrying device. The device may include a device and a removing device that removes the binding cord from the reel device. With such a configuration, the binding cord held by the cord holding means is wound by the reel device, the reel device on which the binding cord is wound is moved to the outside of the transport path by the moving device, and the binding cord of the reel device is removed. Remove by device. As a result, the binding cord can be reliably discharged to the outside of the transport path.

[0014]

1 and 2 show a binding cord removing device 1 according to a first embodiment of the present invention. The binding string removing device 1 determines whether or not the aligned articles 3 passing on the transporting device 2 are the binding bodies 4, and in the case of the binding body 4, stops the transport of a predetermined article row 3 ′ therein. And the stopped article row 3 '
And a gap 5 between the article row 3 ″ to be conveyed
a and 5b are generated, the binding string 6 stretched in the gap spaces 5a and 5b is cut while being held, and the cut binding string 6 is discharged to the outside of the conveyance path. The binding string removing device 1 is added to the carrying device 2 in order to realize such a function, and includes the photoelectric sensor 10 and the stopping device 20.
A string holding device 30, a string cutting device 40, a string discharging device 50, and a control device (not shown) incorporating a microcomputer.

The transport device 2 is a device for transporting the article 3 to the next step 7, and is a roller conveyor in which a plurality of roll bodies 2'rotated in a predetermined direction are arranged in parallel to form a transport path. . The roll bodies 2'are respectively rotated by the input of a signal such that the upper side, which is the transport path, faces the transport direction A. The transport device 2 transports a low speed conveyor 2a composed of a roll body 2'rotated at a low speed and a high speed conveyor 2b composed of a roll body 2 "rotated at a high speed, which are arranged in series. The conveying speed is configured to increase from a predetermined point on the road, and a gap 2c provided between these two conveyors 2a and 2b.
Is narrower than the length of the article 3 in the transport direction so that the delivery of the article 3 is ensured.

A photoelectric sensor 10 for detecting the interval between the articles 3 is provided near the end of the high speed conveyor 2b on the upstream side in the conveying direction. The photoelectric sensor 10 is provided for determining whether or not the aggregate of the articles 3 conveyed in a state of being arranged in a plurality of rows and a plurality of columns is bound by a binding string. The photoelectric sensor 10 is configured to emit light from one side of the transport path and receive the light from the other side, and whether there is a space between the articles forming the article row depending on whether light is received or not. Detect whether or not. Then, when the interval is not detected, a predetermined signal is sent to the control device.
When this signal is input, the control device determines that the object to be conveyed is a binding body, and in order to remove the binding string 6 that constitutes the binding body, a stop device 20 and a string holding device 30 described later. A predetermined control signal is output to the string cutting device 40 and the string discharging device 50.

A frame 8 for mounting a stop device 20, a string holding device 30, a string cutting device 40, and a string collecting device 50, which will be described later, is arranged in the center of the high-speed conveyor 2b so as to straddle the conveying path. ing. The frame 8 is, as shown in FIGS. 3 and 4, a gate-shaped frame 8a through which an object to be conveyed can pass,
8b are arranged at two locations, namely, on the downstream side in the transport direction and on the upstream side in the transport direction, and the crosspiece 8c is provided between the two frames. In this case, the distance between the two frames 8a and 8b is such that the devices 20 and 40 attached to the ceiling of the frame 8a arranged on the downstream side in the transport direction can access the wall surface on the downstream side in the transport direction of the bundle 4, In addition, the length of the bundle 4 in the transport direction is set so that the devices 30 and 50 attached to the ceiling of the frame 8b arranged upstream in the transport direction can access the wall surface of the bundle 4 on the upstream side in the transport direction. It corresponds. That is, in the case where the bundle 4 is formed by arranging 6 articles 3 in 3 rows and 2 columns as shown in the figure, this corresponds to the length in the transport direction for 3 articles.

As shown in FIG. 5, the stopping device 2 is attached to the mounting bar 8a 'on the ceiling of the frame 8a on the downstream side in the carrying direction.
0 is attached. The stop device 20 is for stopping the transportation of at least one article row of the bundle when the transport target is determined to be the bundle, and is a part of the bundle 4. A stopper member 21 having an area and rigidity capable of stopping only the row 3 ', and a cylinder device 22 for arranging the stopper member 21 on the conveyance path.
And are included. The cylinder device 22 is vertically attached to the frame 8a, and the stopper member 21 is attached to the lower end portion of its operating rod. The stopper member 21 is normally located above the height of the binding body 4, and is lowered by the cylinder device 22 based on a control signal from the control device to stop a predetermined row of articles of the binding body 4. .

Note that, due to the lowering of the stopper member 21, a deviation occurs between the article row 3'to be stopped and the article row 3 "to be conveyed, and the deviation causes the article row 3'to be wrapped around the binding body 4. The binding string 6 is in a tense state.
As a result, triangular shift spaces 5a and 5b are formed between the article to be stopped and the article to be conveyed and the binding string 6 on the wall surfaces on the downstream side and the upstream side of the binding body.

A string holding device 30 is attached to a mounting bar 8b 'on the ceiling of the frame 8b on the upstream side in the conveying direction. The string holding device 30 holds the binding string 6 stretched over the gap space 5b formed on the upstream side of the binding body, and as shown in FIGS. A hook-shaped member 31 for hooking and holding 6 from below, a first cylinder device 32 attached to the attachment portion 8b 'of the frame 8b at the upper end and having the hook-shaped member 31 attached at the lower end, and a first cylinder A second cylinder device 33 attached to the lower end of the operating rod 32a of 32;
It is configured to include. As shown in FIG. 6, the hook-shaped member 31 is a bifurcated member in the horizontal cross-sectional shape and a Z-shaped member in the vertical cross-sectional shape, and the working rod 33a of the second cylinder 33 at the Z-shaped base end portion 31a. It is rotatably attached to the tip, is supported by the tip of the operating rod 32a of the first cylinder 32 at the first bent portion 31b, and has a bifurcated hooking portion 31c formed at the tip from the second bent portion. . The hook-shaped member 31 is normally located above the binding body 4 with the hook portion 31c facing downward, and operates as follows based on a control signal from the control device.

First, the operating rod 32a of the first cylinder device 32 is extended to lower the hook-shaped member 31, and the hook portion 31c is stopped when the hook portion 31c comes under the binding cord. Then, the operating rod 33a of the second cylinder 33 is extended to lower the base end 31a of the hook-shaped member 31. As a result, the hook-shaped member 31 is rotated around the first bent portion 31b as a fulcrum, and the hooking portion 31c hooks the binding cord 6. Then, waiting for the binding string 6 to be cut by the string cutting device 40 with the binding string 6 hooked, after the binding string 6 is cut, it rises while holding the cut binding string 6. Then, after waiting for the binding string 6 to be removed by the string discharging device 50 described later, the device returns to the original position.

A string cutting device 40 is attached to the frame 8a on the downstream side in the conveying direction. This string cutting device 40
Is for cutting the binding cord 6 wound around the binding body 4, and includes a cutter 41 having a cutting blade directed downward, and a mounting portion 8a of a ceiling portion of the frame 8a for performing the cutting operation of the cutter 41. ′ Mounted on the cylinder device 42
And are included. This cutter 41 is also usually
It is located above the height of the binding body 4, and is lowered toward the binding string 6 stretched in the shift space 5a on the downstream side in the transport direction of the binding body 4 based on a control signal from the control device. .

A string discharging device 50 is attached to the frame 8b on the upstream side in the conveying direction. This string discharging device 50
The reel device 51 is for ejecting the binding cord 6 held by the cord holding device 30 to the outside of the conveying path, and for winding the binding cord 6 held by the cord holding device 30.
And a removing device 5 for removing the binding cord 6 from the reel device 51.
2 and a moving device 53 that slides the reel device 51 and the removing device 52 in a direction orthogonal to the transport direction.

The reel device 51 includes a plurality of winding rods 51.
It is composed of a rotating body 51b having a and a motor 51c for operating the rotating body 51b. In this reel device 51, the binding string 6 is entwined by the winding string 51a by rotating the rotating body 51b for a predetermined time while the binding string 6 is interposed between the winding rods 51a. Is configured. The removing device 52 is a jig 52a that surrounds the outer periphery of the rotating body 51 of the reel device 51.
And a cylinder device 52b for raising and lowering the jig 52a. The jig 52a is arranged at the upper end of the rotating body 51b with the rotating body 51b of the reel device 51 inserted in the space, and is lowered along the winding rod 51a of the rotating body 51b by the cylinder device 52b. To be done.

The moving device 53 is for moving the reel device 51 and the removing device 52 in the direction orthogonal to the carrying direction, and is a mounting member 53a to which the reel device 51 and the removing device 52 are mounted, and the mounting member 53a. And a cylinder device 53b for moving the carriage in a direction orthogonal to the transport direction. As shown in FIG. 3, the cylinder device 53b is horizontally attached to the frame 8b, and the attachment member 53a is attached to the tip of the operating rod thereof.
The attachment member 53a is attached to a guide rail 8d provided on the frame 8b, and is moved in the transport direction orthogonal direction along the guide rail 8d by the cylinder device 53b.

The string discharging device 50 is usually located outside the conveying path, and is operated as follows based on a control signal from the control device. First, it moves in the direction orthogonal to the transport direction, and stops when the rotating body 51b of the reel device 51 is positioned directly above the hook-shaped member 31 of the string holding device 30.
Then, the hook-shaped member 31 of the string holding device 30 moves up while the binding string 6 is hooked, and the winding rod 51 of the rotating body 51b.
When it comes to a position where a is sandwiched, the rotator 51b is rotated, and the binding cord 6 is wound around the winding rod 51a. As a result, the binding string 6 of the string holding device 30 can be connected to the reel device 51.
It is wound around and is moved toward the outside of the transport path in this state. Then, the jig 52a of the removing device 52 is slid downward by stopping right above a string collection container (not shown) provided outside the transport path. Thereby, the rotating body 51b
The binding string 6 wound around the take-up rod 51a is pulled out.

The above operations of the stopping device 20, the string holding device 30, the string cutting device 40, and the string discharging device 50,
In addition, the stop and restart of the transporting device 2 are executed according to the sequence stored in the microcomputer of the control device. For example, in the process of transporting a rectangular container for collecting beer bottles by using the binding string removing device 1 configured as described above, it is determined whether or not the container is in a bound state, and the container is in the bound state. In the case, a state in which the binding cord 6 is removed will be described.

The beer collection container as the article 3 is placed in a loading platform or a loading / unloading field of a truck in a state of being aligned in a plurality of rows and a plurality of columns, being stacked in a plurality of stages and being bound by a string at a predetermined stage. To do. From this stacked state, the articles 3 on the same stage are depalletized.
Is collectively held and placed on the low speed conveyor 2a.

FIG. 8 shows an unassembled stepped article set.
As shown in (a), the low speed conveyor 2a is in close contact.
When passing through the upper part and moving to the high speed conveyor 2b, they are separated from each other. The photoelectric sensor 10 detects the interval 11 between the articles 3 in the article row, and it is determined that the conveyance target is an unbound body. In this case, the control signal is not transmitted, and the object to be conveyed passes through the frame 8 as it is.

On the other hand, as shown in FIG. 8B, the bundle of articles in the bound stage is kept in close contact with the high speed conveyor 2b.
It is detected that there is no space between the articles 3. As a result, it is determined that the object to be transported on the transport device is a bundle (determination step), and a predetermined control signal is sent to the stop device 20, the string holding device 30, the string cutting device 40, the string discharge device 50, and the transport device 2. Is sent.

First, in response to a control signal from the control device, the stop device 20 operates to stop the conveyance of a part of the article row 3'of the bundle 4 passing through the conveyance path (stop step).
At this time, the transport device 2 is still in operation, and the article row 3 ″ in the other part is about to be transported. As a result, the gaps 5a and 5b are shifted between the bundle 4 on the downstream side and the upstream side in the transport direction.
Is formed. Immediately after the stop device 20 operates, the transport device 2 is stopped (transport stop step), and the bundle 4 is subjected to the following processing.

First, in the string holding step, the binding string stretched in the gap space 5b generated between the stopped article row 3'and the article row 3 "to be conveyed is held. The hook-shaped member 31 of the holding device 30 is lowered by the first cylinder device 31 and is hooked by the second cylinder device 33. Then, in the string cutting process, the string cutting device 40 moves downstream in the transport direction of the bundle 4. The binding cord 6 stretched over the side gap space 5a is cut off, and the cut binding cord 6 is hooked on the forked hook-like member 31 of the cord holding device 30 at the center thereof. Becomes

Then, in the string discharging step, the binding string 6 held by the string holding device 30 is discharged to the outside of the conveying path of the conveying device 3. In this case, the string discharging device 50 has moved to a position directly above the hook-shaped member 31 of the string holding device 30, and the string holding device 30 moves up with the binding string 6 hooked,
The rotating body 51b of the reel device 51 is provided with a forked hook-shaped member 31.
Wait for it to stop at the surrounding position. The binding cord 6 held by the hook-shaped member 31 is in a state of being interposed between the plurality of winding rods 51a of the rotating body 51b, and in this state, the rotating body 51b of the reel device 51 is rotated to bind the binding body 6. The string 6 is wound up. The reel device 51 that has wound up the binding cord 6 moves to the outside of the transport path, and the binding device 6 is removed by the removing device 52.

In this state, the transport of the transport device 2 is restarted (transport restart step). As a result, the articles 3 forming the bound body 4 are unbound, and are conveyed to the next step 7, respectively. In the present embodiment, since the string holding device 30 and the string discharging device 50 are arranged avoiding the downstream side in the transport direction, the transport can be resumed without waiting for these devices to leave the transport path. . However, if such an advantage is not required, these devices may be arranged on the downstream side in the transport direction.

Further, the cord holding device 30 is constituted so as to hold the cut binding cord and discharge the binding cord into a predetermined cord collecting container, thereby functioning as a cord holding means and a cord discharging means. You may make it also have the function as. In the present embodiment, the string cutting device 40 is provided on the opposite side of the string holding device 30.
Since it is arranged, it becomes possible to hold the string at the substantially central portion of the cut string, and it becomes possible to stably hold the string even by a method such as locking or hooking, but a holding mode such as gripping or pinching is adopted In this case, the string cutting device 40 may be arranged at any position because it may be cut at any position.

Further, in the present embodiment, the photoelectric sensor 10 detects whether or not the articles 3 are in the bound state, but other methods can be adopted. In this case, for example, an image processing method in which an object to be conveyed is photographed and the presence or absence of a binding cord is determined based on the video data thereof can be adopted. According to this method, even in the case of the one-row, multiple-column bundle 4 configured by arranging one article 3 in the direction orthogonal to the transport direction, the presence or absence of the bound state can be accurately detected.

Further, the conveying device 2 does not have to be the roller conveyor as described above, but may be, for example, a chain conveyor or a belt conveyor. Further, a conveyor is configured by arranging a plurality of narrow belt conveyors in a direction parallel to the conveying direction, and by stopping a predetermined belt conveyor among them, a part of the article row of the combined body 4 is The transportation may be stopped.

Further, depending on the speed of the work for removing the binding cord, the configuration of the carrier device 2 or the carrier speed, the above-mentioned cord holding step, cutting step and cord discharging step may be carried out without stopping the carrier device 2. Good.

[0039]

According to the first aspect of the present invention, it is determined whether or not the article to be conveyed is a bundle, and when it is determined that the article is a bundle, a part of the article row of the bundle is conveyed. Is stopped to cause a misalignment between the stopped article row and the article row to be conveyed, and cuts while holding the binding cord wound around the binding body through the deviation. Therefore, when the aggregate of conveyed articles is bound by a string, the binding string can be surely removed.
As a result, even an article in the bound state can be loaded into the transport device in the same manner as the article in the unbound state. Furthermore,
Only when the object to be conveyed is in the bound state, a series of work for removing the binding string is performed, and in other cases, the string is passed through the transport device as it is, so that the series of processes can be performed quickly.

According to the second aspect of the present invention, since the binding cord is held and cut while the conveying device is stopped, the cord cutting operation can be reliably performed. According to the invention of claim 3, in the case of processing a group of articles which are aligned and stacked in a plurality of rows and bound with a string in at least one row, the articles are collectively supplied to the conveying device for each group of articles in the same row. Therefore, the bulkiness of the transport device and the device for removing the binding cord can be reduced. Further, the processing for removing the binding cord is performed only on the set of the articles determined to be the bound body in the article set, so that the processing of the articles is made efficient.

According to the fourth aspect of the present invention, it is determined whether or not the article to be conveyed is a bundle, and when it is determined that the article is a bundle, a part of the article row of the bundle is conveyed. By stopping the, the shift portion is generated between the stopped article row and the article row to be conveyed, and through the shift portion,
Since the binding string wrapped around the binding body is cut while being held, the binding string can be reliably removed when the aggregate of conveyed articles is bound by the string.
As a result, even an article in the bound state can be loaded into the transport device in the same manner as the article in the unbound state. Also, when processing a group of articles that are aligned and stacked in a plurality of layers and bound with a string in a predetermined layer, it is possible to batch-load the article groups of the same level into the transport device at the same time. Can be lowered. Furthermore, a series of binding string removal operations are performed only when the object to be conveyed is in a bound state, and in other cases, the string is passed through the transport device as it is, so a series of processes can be performed quickly.

According to the fifth aspect of the present invention, it is determined whether or not the article is in the bound state depending on whether or not the articles in the close contact state which form the article row are separated by the increase in the conveying speed. Presence can be detected accurately. According to the invention of claim 6, the presence or absence of the binding cord is detected by image processing.
The presence or absence of a bound state can be accurately detected even when the article row is composed of only one article.

According to the seventh aspect of the invention, since the binding cord is locked at the shift portion generated on the upstream side of the binding body in the conveying direction,
The article can be conveyed before the string holding means has left the conveying path, and the processing efficiency is improved. According to the invention of claim 8, since the binding cord is held at the substantially central portion of the cut binding cord, the binding cord can be held stably, and the binding cord is gripped, pinched,
Various holding modes such as locking or locking can be adopted.

According to the ninth aspect of the invention, since the binding cord is wound by the reel device and the wound binding cord is moved to the outside of the conveying path to be removed, the binding cord is reliably removed from the cord holding means. , So that it can be discharged outside the transport path.

[Brief description of drawings]

FIG. 1 is a front view showing a binding string removing device according to an embodiment of the present invention.

FIG. 2 is a plan view of the binding string removing device.

FIG. 3 is a plan view showing an arrangement state of a stopping device, a string holding device, a string cutting device, and a string discharging device in the binding string removing device.

FIG. 4 is a view taken along the line BB ′ of FIG.

5 is a view taken along the line CC ′ of FIG.

FIG. 6 is a front view showing a string holding device and a string discharging device of the binding string removing device.

FIG. 7 is a plan view showing a string holding device and a string discharging device of the binding string removing device.

FIG. 8 is a front view showing a state of detecting whether or not the container is a bound body in the binding string removing device.

[Explanation of symbols]

1. Bundling string removing device 2 ... Carrier 3 ... Goods 4 ... Bundle 5a, 5b ... Deviation space (deviation part) 6 ... binding string 10 ... Photoelectric sensor 20 ... Stopping device 21 ... Stopper 30 ... String holding device 31c ... Hook 40 ... String cutting device 50 ... String discharging device 51 ... Reel device 52 ... Moving device 53 ... Removal device

Claims (9)

[Claims] 1. An object to be conveyed on a conveying device is a plurality of article rows, in which at least one article having substantially the same shape is arranged, arranged along a direction orthogonal to the conveying direction, and a binding cord is wound around the periphery to be integrated. A determining step of determining whether or not the bundle is a bundle, a stopping step of stopping the transportation of at least one article row of the bundle when the bundle is determined, and a stopped article row A cord holding step of holding the binding cord stretched over the shift portion generated between the row of articles to be conveyed, and a string cutting step of cutting the binding cord stretched over the shift portion, A method for removing a binding cord, which comprises sequentially performing a string discharging step of discharging the binding string to the outside of the transport path of the transport device. 2. Between the stopping step and the string holding step,
The method for removing a binding cord according to claim 1, further comprising a transportation stopping step of stopping the transportation device, and a transportation restarting step of operating the transportation device after the string cutting step. 3. A method of cutting and removing a binding cord bound to at least one stage of a plurality of articles of substantially the same shape stacked in a plurality of stages, which are collectively supplied to a conveying device for each set of articles of the same stage. The method for removing a binding cord according to claim 1 or 2, wherein the binding cord is removed from the collection of articles on the conveying device later. 4. An object to be conveyed on a conveying device is formed by arranging a plurality of article rows in which at least one article having substantially the same shape is lined up along a direction orthogonal to the conveying direction and winding a binding cord around the periphery to integrate them. Determining means for determining whether or not the bundle is a bundle, stop means for stopping the conveyance of at least one article row of the bundle when the bundle is determined, and the stopped article row A string holding means for holding the binding cord stretched over the shift portion generated between the row of articles to be conveyed, and a string cutting means for cutting the binding cord stretched over the shift portion, and A binding string removing device comprising: a string discharging unit that discharges the binding string to the outside of the conveying path of the conveying device. 5. The transfer device is configured so that the transfer speed is increased from a predetermined point on a transfer path, and a plurality of articles are arranged in a line of articles to be transferred placed on the transfer device. The determination means detects whether or not a gap has occurred between the articles in the article row of the article to be conveyed by passing through the predetermined point of the conveyance path, and the conveyance based on the detection result. The binding string removing device according to claim 4, wherein the binding string removing device is configured to determine whether or not an object is the binding body. 6. The determining means detects by image processing whether or not a binding cord is wrapped around the object to be conveyed, and based on the detection result, whether the object to be conveyed is the bundle. The tie string removing device according to claim 4, wherein the tie string removing device is configured to determine that 7. The cord holding means has a hook-shaped hook portion, and the hook portion is stretched to the shift portion via the shift portion formed on the upstream side in the transport direction of the binding body. The binding cord removing device according to any one of claims 4 to 6, which holds the binding cord. 8. The string cutting means cuts the binding string stretched over the offset portion formed on the side opposite to the side where the string holding means holds the binding string. Four
The binding string removal device according to any one of 1 to 7. 9. The string discharging means comprises: a reel device for winding the binding string held by the string holding means; a moving device for moving the reel device to a position outside a carrying path of the carrying device; A removing device for removing the binding cord,
The binding cord removing device according to any one of claims 4 to 8, which is configured to include: