JPH05132186A - Handling method for carton blank and carton blank winding and unwinding device used in the method - Google Patents

Abstract

PURPOSE:To eliminate the need of manpower for a work including a transport from a blanking process to a cartoning machine. CONSTITUTION:A blank bundle T preliminarily so turned as to have the reverse side up and set in a constant direction at a blanking and delivery section, is fed to the predetermined position. During this process, the next blank bundle T is sequentially fed below the previously fed blank bundle T'. A carton blank B is paid out from the upper part of the blank bundle T' via a carton piece formation section, and taken up with a winder 4 comprising a drum and belt, thereby forming a roll body 5a. After the roll body 5a is transported to a cartoning machine, a carton blank B is paid out and delivered to a feeder section B. In the roll body 5a, the surface of the carton blank B is directed up, and a product item can be visually confirmed. Also, when the roll body 5a is paid out, the reverse side of the carton blank B is directed up. Also, the roll body 5a is preliminarily positioned. Thus, no manual work is required for feeding the carton blank B to the feeder section 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for handling a carton blank that conveys a carton blank that has come out through a printing process and a punching process to the next box making process, and a carton blank winding device used in the method. It is about.

[0002]

2. Description of the Related Art A carton as a container for storing beverages, etc. is first printed on an original fabric and then punched out by a punching machine to form a carton blank by forming ruled lines at the same time. It is formed by placing the carton blank in a box-making machine in a sack-attached state, then opening it in a filling factory, filling the contents, and sealing the contents. In this series of manufacturing processes, when the carton blanks that have gone through the printing process and the punching process are transported to the next box making process, conventionally, the blank bundle is manually placed on the pallet in the punching delivery section. In this state, the blank bundle is conveyed to the feeder of the box making machine by a hand lift or the like, and then the blank bundles are manually set again one by one in the feeder. Further, when the blank bundle is manually placed on the feeder, the carton blank has been oriented in a predetermined direction because the box making machine has directionality.

The following three types of methods are basically adopted as a method of punching out the original carton from the printing process.

In the first type, as shown in FIGS. 1 and 2, a printed sheet material S is flat-punched by a punching machine M so that it can be peeled off by hand, and then a plurality of sheets are bundled. In this state, the operator manually removes unnecessary parts other than the carton blank B to create the blank bundle T, which is a method commonly called "plucking".

The second type is a method in which, as shown in FIGS. 3 and 4, a printed sheet material S is flat-punched into a carton blank B by a punching machine M. In the case of this method, the punched carton blanks B are accumulated into a blank bundle T.

The third type is a method of forming a carton blank B by applying a printed continuous material S to a rotary die cutter R as shown in FIGS. 5 and 6, and in this method, the carton blank B is formed. B is discharged in a scissor shape. In the case of this method, the squeezing carton blanks B are once accumulated to form a blank bundle T.

[0007]

According to the above-mentioned conventional method of transporting the carton blank coming out from the printing process and the punching process to the box making machine, the blank part is bundled by the delivery section of the punching process and the feeder of the box making machine. There is a problem in that a worker is required to raise and lower the product, which results in an increase in labor cost and an increase in manufacturing cost. Further, it is a heavy burden for the operator to manually raise and lower the blank bundle, and there is a background that it is desired to reduce such a conveying work in the field.

The present invention has been made in view of such problems and backgrounds, and an object thereof is to automatically convey a carton blank from a punching process to a box making machine without manual labor. It is an object of the present invention to provide a method for handling a carton blank that can be set as a set, and a winding device and an unwinding device for the carton blank used in the method.

[0009]

In order to achieve the above object, the present inventors utilize a hoisting machine consisting of a drum and a belt as a conveying means between a punching delivery section and a box making machine. In consideration of this, the present invention has been achieved as a result of trial and error.

In devising the present invention, the applicability of the hoisting machine of two types was examined. These have already been put to practical use in bookbinding for magazines and the like, and at the end of the printing process, a scissors-like booklet is wound around the surface of the drum with a belt to form a disc-shaped roll, which is then bound. It is a device that conveys to a process and sequentially feeds out in a scissor-like manner.
One is a type in which the brushes sent in a scissor shape in the lower leading state are sequentially wound from below the drum together with the belt (hereinafter referred to as the first method), and the other is in the upper leading state. A type in which the copy sheets sent in a scissor-like shape are sequentially wound with the belt from below the drum (hereinafter referred to as the second
Method).

FIG. 7 shows the carton blank B discharged from the rotary die cutter in a face-down manner in the form of scissors in the lower side leading state by the punching method of the third type, and is wound in the first type in the lower side leading state. It shows a method of forming the disc-shaped roll body 2a by winding with the machine 1. This method has a problem in that the printed surface of the carton blank B on the roll body 2a is on the inner side, so that it is not possible to confirm the items in the wound state. Requires machine 1. And
When the roll body 2a thus wound up is conveyed to the box making machine and the carton blank B is delivered to the feeder 3, it cannot be delivered as it is, so it is once inverted. As a result, the back surface is on the upper side, which is convenient, but since the direction of the carton blank B has not changed, some mechanism for changing the direction by the feeder 3 is required.

FIG. 8 shows a second method in which the carton blank B discharged from the rotary die cutter in a face-down manner in a scissor shape in the lower preceding state is once inverted by the third type punching method to obtain the upper preceding state. It shows a method of winding with a hoist 4 to form a disk-shaped roll body 5a. According to this method, the front and back of the carton blank B are reversed before being wound on the drum, so that the printed surface of the carton blank becomes the outer side when wound, so that it is possible to confirm the item, but the carton blank B with multiple impositions In that case, a plurality of hoisting machines 4 are still required. Then, when the roll body 5a is conveyed to the box making machine and fed out to the feeder 3, there is an advantage that the back surface becomes the upper side when the carton blank B is fed out as it is, but the direction of the carton blank B is not changed, and therefore, as shown in FIG. As in the case, some mechanism for changing the direction of the carton blank B by the feeder 3 is required.

In the method shown in FIG. 9, the blank bundle T formed by the punching delivery portion is placed on the scissor forming portion 6 composed of a belt conveyor, and the carton blank B is inserted from the upper portion of the blank bundle T.
Are sequentially sent out and conveyed in a scissor shape in the upper preceding state, and the carton blank B conveyed in this scissor shape is
Disk-shaped roll body 5b that is wound by the winding system 4
2 shows a method of forming the. In this method, since the blank bundle T is formed at the punching delivery portion, the direction of the carton blank B can be easily changed by providing the turntable in front of the squeezing portion 6. However, this method has a problem that the printed surface of the carton blank B on the roll body 5b is on the inner side, so that the items cannot be confirmed in the rolled-up state. Furthermore, the roll body 5b is conveyed to the feeder 3 of the box making machine. When the carton blank B is unwound and the printing surface is on the upper side, it is necessary to temporarily reverse the unwound product as a small bundle T'when feeding it to the feeder 3.

In the method shown in FIG. 10, the carton blanks B are fed out in order from the top of the blank bundle T formed by the punching delivery section with the front and back reversed, and are conveyed in a scissor shape in the lower preceding state, and are conveyed in this squeezing state. It shows a method of forming a disc-shaped roll body 2b by winding up the carton blank B that is obtained by the first type hoisting machine 1. in this way,
Since the printed surface of the carton blank B on the roll body 2b is on the outside, the item can be confirmed. Further, in this method, since the blank bundle T is formed at the punching delivery portion,
The direction of the carton blank B can be changed by providing a turntable. However, the roll body 2b
When the carton blank B is fed to the box making machine and fed out, the carton blank B needs to be turned upside down. When the carton blank B is fed out in this way, the printing surface is on the upper side. .. Therefore, since it needs to be inverted twice before being set in the feeder 3,
The equipment for this is too large.

As described above, none of the methods described in FIGS. 7 to 10 has some drawbacks and is not satisfactory.

The method of handling a carton blank according to the present invention is based on the results of the examination of each method described above, and the blank bundles set in a certain direction in the punching delivery section are sequentially placed at predetermined positions. The next blank bundle is sequentially docked below the previously supplied blank bundle, and the carton blank is sent out from the top of the supplied blank bundle in a scissor shape, and the carton blank is drumed while maintaining this scissor state. A disc-shaped roll is formed by winding the roll on the top, and then the roll is conveyed to the feeder of the box making machine,
The feature is that the carton blank is fed from the roll body and supplied to the feeder.

The carton blank take-up device of the present invention used in the above method has a conveyor for sequentially supplying a blank bundle to a predetermined position and a next blank bundle below the previously supplied blank bundle. An elevating unit for docking, a scissor forming unit that sends out carton blanks in a scissor shape from the top of the supplied blank bundle, and a carton blank is wound on a drum with a belt while maintaining the scissor state to form a disc-shaped roll body. It is characterized by having a hoisting machine.

On the other hand, the unwinding device of the carton blank of the present invention used in the above method unwinds the carton blank together with the belt from the disc-shaped roll body obtained by winding the carton blank in the squeezed state on the drum with the belt. From the feeding machine that feeds out the carton blanks while maintaining the squeezing state, the curl removal unit that removes the curl while conveying the fed carton blanks, and the blank supply unit that temporarily accumulates the carton blanks discharged from the curl removal unit. It is characterized by becoming.

Further, a jogger and a guide for aligning the carton blanks and a sensor for detecting the amount of the carton blanks are provided in the blank supply section in the unwinding device so that the amount of the carton blanks discharged from the feeding machine can be adjusted. It is preferable to adjust it.

The feeding machine can be constructed by the same machine as the hoisting machine.

[0021]

In the punching delivery section, the blank bundle is inverted so that the back surface is the upper side and is set in a fixed direction. In this case, in the punching method of the first type described above, the blank bundle is manually set. Operation is performed, second and third
This type of punching method is performed mechanically.
As shown in FIG. 11, the blank bundle set in this manner is placed on the transport unit 7 and sequentially supplied, and the next blank bundle T is placed below the previously supplied blank bundle T ′. Will be docked one after another. On the other hand, the carton blank B is sent out from the upper part of the supplied blank bundle T ′ in a scissor shape in the upper side preceding state by the scissor forming unit 6, and the carton blank B is kept in the sashimi state and the printing surface is the outer side in the second method. The disk-shaped roll body 5a is formed by being wound by the hoisting machine 4.

After the roll body 5a is conveyed to the feeder 3 of the box making machine, the carton blank B is unwound as it is from below the roll body 5a, and the back surface of the unwound carton blank is the upper side. Is supplied to the feeder.

[0023]

Embodiments of the present invention will now be described in detail with reference to the drawings.

12 and 13 are schematic views for explaining the first embodiment of the method for handling a carton blank according to the present invention. FIG. 12 shows the roll body of the carton blank from the punching delivery section to the winding device. FIG. 13 shows a process of forming a carton blank from a roll body conveyed to a box making machine by a unwinding device to a feeder.

In this embodiment, as shown in FIG. 12, first, an operator reverses the blank bundle T, which has been stripped at the punching delivery portion, so that the back surface of the blank bundle T is on the upper side, and a predetermined direction. And is placed on the transport unit 11. The blank T placed on the transport unit 11 is sent to the squeeze forming unit 12 via an elevating unit (not shown), and the carton blanks B are fed one by one from the top of the supplied blank bundle T. It is conveyed as scissors in the upper leading state. The carton blank B thus conveyed in the upper leading state moves to the belt conveyor 13a in the second type hoisting machine 13 and is sequentially wound with the belt 13c from below the drum 13b. The wound carton blank B forms the roll body 14 with the printed surface facing outward.

As shown in the side view of FIG. 14 and the top view of FIG. 15, the hoisting machine 13 is arranged in parallel so that the respective belt conveyors 13a, 13a face the belt conveyor of the insert forming section 12. 2 units are installed in
When one of the hoisting machines 13 is wound up, the end portions of the respective belt conveyors 13a are moved up and down to be swiftly replaced with each other, so that the carton blank B continuously sent from the squeezing forming section 12 is not interrupted. It is adapted to be wound by the hoisting machine 13. Then, while the other hoisting machine 13 is performing the hoisting operation, the roll body 14 previously wound up is taken out while being placed on the stand 13d, and then the empty stand 13d is set. Is something

FIG. 16 shows the details of the carrying section 11, the elevating section 15 and the squeeze forming section 12. Transport section 11
Is composed of a plurality of belt-shaped belt conveyors 11b running between a plurality of plate materials 11a, and the belt conveyors 11b are extended to the elevation part 15. The lifting unit 15
It is composed of a first lifter 15a that can move up and down and a second lifter 15b that can move up and down and can move forward and backward. The first lifter 15a has a skewered blade shape so that it can pass between the belt conveyors 11b. The lifter 15b also has a skewered blade shape so that it can be fitted to the first lifter 15a. The squeeze forming section 12 is the upper vacuum belt 1
2a and a lower belt conveyor 12b. The vacuum belt 12a sucks the carton blanks B one by one from the upper part of the blank bundle T'supplied to the lower surface thereof and sends them out on the belt conveyor 12b in a scissor-like manner. It has become.

The procedure for forming the squeezing performed by each of these parts will be described below with reference to FIGS. 17 and 18. First,
The blank bundle T placed on the transport unit 11 by the operator is moved up and down by the belt conveyor 11b as shown in
It is transported to the place. In the elevating part 15, after the blank bundle T ₁ is lifted by the first lifter 15a as shown by, the second lifter 15b extends so as to fit with the first lifter 15a as shown by, and then the first lifter 15a. Is lowered, the blank bundle T ₁ is delivered to the second lifter 15b. As shown in (2), the delivered blank bundle T ₁ is in a state in which the second lifter 15b is raised and the upper portion is pressed against the vacuum belt 12a of the squeezing forming portion 12, and in this state, the blank bundle T ₁ is moved by the vacuum belt 12a. Carton blanks B are sequentially sucked one by one from the upper part of and are sent out in a scissor shape onto the belt conveyor 12a. On the other hand, the first lifter 15a after the delivery is lowered and the next blank bundle T ₂ is conveyed on it. The next conveyed blank bundle T ₂ is lifted until it comes into contact with the second lifter 15b as shown in, and then the second lifter 15b is retracted and docked with the previous blank bundle T ₁ as shown in. After docking, the second lifter 15b extends so as to fit with the first lifter 15a, as shown in, and the first lifter 15a lowers to deliver the docked blank bundle T'to the second lifter 15b. The state shown below is then reached, and the following steps are repeated to continuously deliver the carton blanks in a scissor shape from the state of the blank bundle.

The roll body 14 formed on the hoisting machine 13 by the hoisting device as described above remains on the stand 13d of the hoisting machine 13 in a stand yard (not shown). After being stored temporarily or as it is, it is transported to the feeder of the box making machine.

As shown in FIG. 13, the stand 13d conveyed to the feeder 16 of the box making machine has a feeding device 17 having the same structure as the hoisting machine 13 while the roll body 14 is still mounted. Is set to. As shown in the figure, the feeding machine 17 is provided with two stands 13d, and either one of the roll bodies 14 set on these feeding machines 17 serves as a buffer, and the feeder 16 does not interrupt the carton blank. B can be discharged.
That is, the belt conveyors 17a, 17 of each feeding machine 17
a is the belt conveyor 1 in the hoisting machine 13 described above.
It has the same structure as 3a and 13a, and is switched when the carton blank B is delivered from one roll body 14. Then, as shown in FIG. 13, the unwinding device includes a curl removing unit 18 between the end portions of the belt conveyors 17a and 17a and the feeder 16 of the box making machine.

FIG. 19 shows the details of the curl removing section 18. The carton blank B conveyed on the belt conveyer 17a of the feeding machine 17 has belts 18a, 18
It is clamped by b and moved to the curl removing section 18, then advances along the outer periphery of the cylindrical drum 18d while being clamped between the belts 18b and 18c, and the blank feeding in the feeder 16 of the box making machine is performed. It is sent to the section 19. In this case, since the carton blank B advances along the outer periphery of the cylindrical drum 18d so that the inside when the roll body 14 is wound is the outside, the curl is corrected. Then, the carton blank B is once accumulated in the blank supply unit 19 with the back surface thereof facing upward,
In the blank supply section 19, the belt conveyor 16a sequentially conveys the blank supply section 19 to the main body of the box making machine.

Further, joggers 19a and 19b for vibrating the side walls of the blank supply unit 19 are attached to the blank supply unit 19 so that the carton blanks B in the blank supply unit 19 are aligned. Further, a sensor 19c for detecting the height of the carton blank B is provided, and the feeding speed of the feeding machine 17 and the curl removing section 18 is adjusted by feeding back the detection value by the sensor 19c, so that the inside of the blank feeding section 19 can be controlled. Carton blank B
The amount of is kept constant.

FIG. 20 is a schematic diagram for explaining the second embodiment of the present invention, showing the steps from the punching delivery section to the formation of the roll body of the carton blank by the winding device. The process of supplying the roll body conveyed to the box making machine to the feeder is the same as that shown in FIG.

In this embodiment, the blank bundle T is discharged from the sheet punching machine 21 by the belt conveyor 22, and the discharged blank bundle T is inverted in the reversing section 23 so that the back surface is on the upper side. The inverted blank bundle T is sequentially sent to the turntable 24, where the direction is changed to a predetermined direction as needed. Then, as in the case of the first embodiment, the transport unit 25, the elevating unit (not shown),
The roll body 28 is passed by the hoisting machine 27 through the sashimi forming section 26.
Is formed. The roll body 28 is a stand 27d.
At the same time, it is conveyed to the box making machine, and the carton blank is fed from the roll body 28 and supplied to the feeder. The lifting unit and the hoisting machine are the same as those described above.

FIG. 21 is a schematic diagram for explaining the third embodiment of the present invention, showing the steps from the punching delivery section to the formation of the roll body of the carton blank by the winding device. The process of supplying the roll body conveyed to the box making machine to the feeder is the same as that shown in FIG.

In this embodiment, the original fabric is punched by a punching machine 31 composed of a rotary die cutter and discharged in scissors form. The discharged carton blanks are bundled into a blank bundle T in a bundle forming section 32. Is in a state,
The blank bundle T is inverted in the reversing unit 33 so that the back surface faces upward. In addition, 34 is a twist discharge part.
The inverted blank bundle T is sequentially sent to the turntable 35, where the direction is changed to a predetermined direction and placed on the transport unit 36 as necessary. The blank bundle T placed on the transport unit 36 moves to a belt conveyor 38a in a hoisting machine 38 via an elevating unit (not shown) and a squeeze forming unit 37, and is sequentially wound up together with a belt 38c from below the drum 38b and is rolled up. Is formed. Then, as in the case of the previous embodiment, each roll body 39 is conveyed to the box making machine, and the carton blank is fed from the roll body 39 and supplied to the feeder. The lifting unit and the hoisting machine are the same as those described above.

[0037]

Since the present invention is configured as described above, it has the following effects.

The carton blanks were sequentially wound by a hoist to form a disc-shaped roll body, which was conveyed to a feeder of a box making machine, and then the carton blank was fed by a feeding machine to be supplied to the feeder. Therefore, it is possible to automatically convey and set the carton blank from the punching process to the box making machine by a machine without manual labor.
It is possible to reduce the number of personnel who raise and lower the carton blank on the delivery section and the feeder of the box making machine.

Further, since the blank bundle is reversed in the punching delivery section and is set in a predetermined direction, the printed surface is the outer side when winding and the item can be confirmed, and moreover the feeder of the box making machine can be confirmed. Can supply the carton blank as it is from the roll body.

Then, a conveyor for sequentially supplying the blank bundle to a predetermined position, an elevating unit for docking the next blank bundle below the previously supplied blank bundle, and a carton blank from the top of the supplied blank bundle. By using a winding device provided with a squeezing portion for sending out the squeezing shape, and a hoisting machine that winds a carton blank onto a drum with a belt to form a disc-shaped roll body while maintaining the squeezing state. The carton blanks can be automatically wound by the hoisting machine simply by setting the blank bundle in the transport section.

Further, the carton blank is unwound together with the belt from the disk-shaped roll body obtained by winding the carton blank in the squeezed state on the drum with a belt, and the carton blank is unwound while maintaining the squeezed state. By using the unwinding device provided with the curl removing unit for removing the curl while transporting the carton blank and the blank supplying unit for temporarily accumulating the carton blank discharged from the curl removing unit, the carton by the feeding machine is used. The blank can be automatically fed out, and the curl habit of the carton blank attached in the rolled-up state can be corrected.

Further, by providing a jogger and a guide for aligning the carton blanks and a sensor for detecting the amount of the carton blanks in the blank supply section of the unwinding device, the detection value of this sensor is fed back to supply the blanks. By making the amount of carton blanks in the section constant, the carton blanks can be appropriately supplied to the box making machine.

[Brief description of drawings]

FIG. 1 is an explanatory view of a first type method for punching out a carton original fabric.

FIG. 2 is a view showing an order in which a carton blank is formed by the method shown in FIG.

FIG. 3 is an explanatory view of a second type method for punching out a carton original fabric.

FIG. 4 is a view showing an order in which a carton blank is formed by the method shown in FIG.

FIG. 5 is an explanatory view of a third type method for punching out a carton original fabric.

FIG. 6 is a view showing an order in which a carton blank is formed by the method shown in FIG.

FIG. 7 is an explanatory view showing one of the carton blank handling methods studied in the course of forming the present invention.

FIG. 8 is an explanatory diagram showing one of the carton blank handling methods studied in the course of forming the present invention.

FIG. 9 is an explanatory view showing one of the carton blank handling methods studied in the course of forming the present invention.

FIG. 10 is an explanatory view showing one of the carton blank handling methods studied in the course of forming the present invention.

FIG. 11 is an explanatory diagram of a carton blank handling method according to the present invention.

FIG. 12 is a view for explaining the first embodiment of the method for handling a carton blank according to the present invention, and is a schematic view showing steps from a punching delivery section to forming a roll body of a carton blank by a winding device. Is.

FIG. 13 is a schematic view showing a process of discharging a carton blank from a roll body conveyed to a box making machine to a feeder by an unwinding device.

FIG. 14 is a side view showing a portion of the winding device in FIG.

FIG. 15 is a plan view of the same.

FIG. 16 is a detailed view of a carrying section, a lifting section, and a squeezing section.

FIG. 17 is a process chart showing the steps of forming squeezing.

FIG. 18 is a process diagram that follows FIG. 15.

FIG. 19 is an enlarged side view showing a portion of a curl removing portion in FIG.

FIG. 20 is a schematic view for explaining the second embodiment and showing the steps from the punching delivery section to the formation of the roll body of the carton blank by the winding device.

FIG. 21 is a schematic view for explaining the third embodiment and showing the steps from the punching delivery section to the formation of the roll body of the carton blank by the winding device.

[Explanation of symbols]

 B Carton blank T Blank bundle 3 Feeder 4 Hoisting machine 5a Roll body 6 Sashimi forming section 7 Conveying section 8 Elevating section 11 Conveying section 12 Sashimi forming section 13 Hoisting machine 14 Roll body 15 Elevating section 16 Feeder 17 Feeder 18 Curl removal Part 19 Blank supply part 19a, 19b Jogger 19c Sensor 25 Conveyor part 26 Sashimi forming part 27 Hoisting machine 28 Roll body 36 Conveying part 37 Sashimi forming part 38 Hoisting machine 39 Roll body

Claims (5)

[Claims] 1. A blank bundle set in a predetermined direction in a punching delivery section is sequentially supplied to a predetermined position, and the next blank bundle is sequentially docked and supplied below the blank bundle previously supplied. The carton blank is sent out in a scissor shape from the upper part of the blank bundle, and the carton blank is wound on the drum together with the belt by the hoisting machine to form a disc-shaped roll body, and then the roll body is formed. A method for handling a carton blank, which comprises feeding the carton blank to a feeder of a box making machine, and then feeding the carton blank from a roll body by a feeding machine to supply the carton blank to the feeder. 2. A carton blank for feeding a blank bundle sequentially to a predetermined position, an elevating unit for docking the next blank bundle below the blank bundle previously supplied, and a carton blank from the top of the supplied blank bundle. Of the carton blank, which is provided with a squeezing portion for sending out the squeezing shape, and a hoisting machine that winds the carton blank onto the drum with a belt to form a disc-shaped roll body while maintaining the squeezing state. Take-up device. 3. A feeder for feeding a carton blank together with a belt from a disc-shaped roll body obtained by winding a carton blank in a squeezed state on a drum with a belt, and feeding the carton blank while maintaining the squeezed state. An unwinding device comprising: a curl removing unit that removes the curl while conveying the carton blank, and a blank supply unit that temporarily accumulates the carton blanks discharged from the curl removing unit. 4. The unwinding device according to claim 3, wherein the blank supply section is provided with a jogger and a guide for aligning the carton blanks and a sensor for detecting the amount of the carton blanks. 5. The unwinding device according to claim 3, wherein the unwinding machine is configured by the same machine as the hoisting machine.