JP3122897B2 - Film type packing method and its packing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film-type packaging method and a packaging apparatus for tightly winding a stretch film around a relatively small and long package.

[0002]

2. Description of the Related Art In recent years, stretch films have been used.
Stretch wrapping machines are gradually being developed, mainly pallet stretch wrapping machines. However, the conventional stretch film packaging apparatus places a large number of loads on a pallet mainly used for cargo handling work, and wraps the load on the pallet with a stretch film together with banding work, etc. In addition, the entire apparatus was quite large. For this reason, there has been a problem that it is difficult to introduce it into a relatively small factory or a packing operation of a compact package. Therefore, in such a case, a banding machine with an arch, which has been widely used in the past, has been mainly used.However, depending on the shape and the packing form of the packaged material, if the binding state is not satisfactory enough. Did not. Recently, small stretch film packaging machines have been developed, but their functions are still incomplete at present.

[0003]

SUMMARY OF THE INVENTION The present invention aims to reduce the size and speed of a stretch film machine under the above-mentioned circumstances so that it can be used in any packaging field as if it were a general-purpose banding machine. It is intended to be highly functional.

[0004]

Means for Solving the Problems The present invention employs the following means in order to solve the above problems. According to a first aspect of the present invention, a gripper gripping a leading end of a film is retracted from a rotating orbital position of a rotating drum in a method of packing a package on a table with a film by rotating the rotating drum. After rotating the rotating drum, the leading end of the film is returned to the rotating orbital position of the rotating drum, and the package is wound around the rotating film and packed. According to the invention of this method, when the film is wound around the rotating drum around the package, the gripper gripping the leading end of the film is retracted from the rotation orbital position of the rotating drum to loosen the film relative to the package. This is a packing method that cleans the processing of the film tip because the film tip can be wrapped around the film around the film.

A second invention which is to be patented is a method of packing a packaged object on a table with a film by a rotating operation of a rotating drum, wherein a gripper gripping a leading end of the film is rotated by a rotating orbit of the rotating drum. After retracting from the position and rotating the rotating drum several times, the leading end of the film is returned to the rotating orbital position of the rotating drum by the film leading end return device, and wound between the rotating films,
Thereafter, the rear end of the film is cut, and the rear end of the film cut by the film terminal processing device is brought into close contact with the surrounding film to pack the package.

First, a film grip mechanism and a cutter mechanism are integrally formed, and a film grip front end returning device and a film terminal processing device are operated so as to synchronize with the operation of the integrally formed gripper. It was done. Second, the above-mentioned gripper retracts from the orbit of the film from the beginning of winding the film to eliminate loosening of the film winding. Third, since the film grip end and the film cut end are each treated with compressed air, the finished state of the packed state is good.

In a third aspect of the invention, which is intended to receive a patent, in the method of the second aspect, at least one film is interposed between the plurality of packages when packing the plurality of packages. The film is wound around the package and packed. In this case, after winding the film around one package, the rotating drum is temporarily stopped,
Another package is placed on the table, and the film winding operation is restarted to pack a plurality of packages.

[0008] By performing the packing operation by the above method, even if the packing material is misaligned among a plurality of packing materials, it is possible to prevent the occurrence of scratches. In this case, by winding the film in a spiral shape, in the case of a long package, there is an effect of preventing the occurrence of scratches.

A fourth invention for which a patent is sought is an invention of a packing apparatus used in the invention of the above method, wherein a table on which a package to be packed is placed and a film tip is gripped below the table. A gripper integrally formed with a cutter section for cutting the film, a rotary drum orbiting around the package on the table, and a film tension fixed to the rotary drum and extending the film tip around the package and winding it around the package. An apparatus, a film grip tip blow-back device fixed to a gripper disposed at a lower portion of the table, and a film terminal processing device fixed to the gripper, wherein the gripper holds a film tip and a rotating drum. The film is packed by rotating around the rotating drum several times. When the film is wound around, the gripping force of the gripped film tip is released, the film tip blowing back device is operated, and after cutting the film rear end by the cutter unit, the film terminal processing device is operated. .

A fifth invention for which a patent is sought is a more specific construction of the above-mentioned fourth packing device, wherein the film tension device is formed so as to extend outward from a rotary drum. A reel bracket for holding the film, an L-shaped roller bracket having a fulcrum fixed to the rotating drum, a guide roller fixed to the rotating drum, an arm fixed to the tip of the roller bracket, and a roller. A swing roller fixed to a free end of the arm between a fulcrum to which the bracket is fixed and a guide roller; a small diameter having a chain sprocket having the same diameter at a predetermined interval on the roller bracket; a roller and the large-diameter roller is connected via a chain, between the free end of the proximal end and the arm of the reel bracket, and previous reel bracket A spring is stretched between the roller bracket and the adjustment screw formed on the roller bracket, and the film held on the reel bracket and the small-diameter roller are brought into contact with each other, and the large-diameter roller, the guide roller, and the swing roller are sequentially passed through the spring. The film is stretched.

The stretching means for the film is such that the film wound around the reel and the small-diameter roller are brought into contact with each other, and the film is stretched sequentially through the large-diameter roller, the guide roller and the swing roller. The film can be wound around the package by applying a proper film tension.

According to a sixth aspect of the present invention, in the packing device according to the fourth aspect of the present invention, a deceleration position detecting sensor for reducing a rotational force of the rotary drum on a rotary orbit of the rotary drum and an origin position detection are provided. A sensor is provided, and a servomotor is provided as a rotation drive source of the rotating drum.

Although the rotary drum has a large moment of inertia, a servomotor is used as its power drive source. Therefore, even when a high-speed or low-speed switching operation is performed, the impact can be reduced and the rotation can be reduced. It can be stopped accurately at the reference position of the drum.

[0014]

First, the package is placed at a predetermined position in the rotating drum. At this time, the leading end of the film is gripped by the gripper under the table. By switching on,
The motor is started, and the rotating drum is rotated by each transmission means. Due to the rotation of the rotating drum, the film is wound around the package while applying appropriate tension by the action of the small-diameter roller, the large-diameter roller, the guide roller, and the swing roller. When the film starts to wrap around the package, the gripper retracts and moves backward from the rotational orbit of the film to a position where the film comes off while gripping the film.
When the first rotation is detected by the origin position detection sensor and the second rotation film is wound around the first rotation film, the gripper is opened and the film grip end is set in a free state. When it is detected by the origin position detection sensor that two rotations have been made, compressed air is blown out from the film end blow-back port for an appropriate time, and the leading end of the film is blown back into the film rotation orbit to form a third round film. Get caught. Further, when winding a plurality of packages, the rotating drum is temporarily stopped after the film is wound a predetermined number of times, and then the packages are additionally placed and the winding operation is restarted.

[0015] Since a servomotor whose rotation speed is switched from high speed to low speed by the deceleration position detecting sensor is used, the impact at the time of deceleration can be reduced. Then, after the motor is switched to the low speed, the motor stops at an accurate position by the origin position detection sensor.
Thereafter, the gripper is advanced to the revolving orbital position of the rotary drum from the retracted position while the gripper is open, and the film is gripped again. When the film is gripped, the spring of the grip part is compressed and the cutter part comes out, so the film is cut by the cutter and cutter receiver, the film on the package side is free, and the other is gripped by the gripper Will remain. Approximately at the same time as the film is cut, compressed air is blown out from the outlet of the film-cut terminal processing device for an appropriate time to bring the cut end of the film into close contact with the orbiting film wound around the package. Thus, the packing operation is completed. The number of film windings can be changed to an arbitrary number by changing the electric operation program.

In the above-mentioned operation, in the operation of packing a plurality of packages, one package is first placed on a table, a film is wound around the package, and then the rotating drum is moved. Stop once, place another package on the same table, and restart the film winding operation. As a result, at least one film is interposed between the plurality of packages.

[0017]

FIG. 1 is a front view of a packing apparatus used in the packing method of the present invention with a front cover removed, and FIG. 2 is a perspective view of the entire apparatus. FIG. 3 is a plan view showing a state in which the gripper is opened, FIG. 4 is an explanatory sectional view showing a state in which the film is cut, and FIG. 5 is an enlarged view of the film tension device. FIG. 6 is a sectional view taken along the line 〓-〓 in FIG. 5, and FIG. 7 is a sectional view taken along the line 〓-〓 in FIG. FIG. 8 is a plan view showing the structure of the film-cut terminal processing apparatus, and FIG. 9 is an operation explanatory view after the film is cut. FIG. 10 is a side view showing the structure of the film grip tip return device, and FIGS.
FIG. 4 is an explanatory diagram of an operation state. 20 to 24 are explanatory diagrams of the operation state according to the method of the third invention.

The packing apparatus used in the present invention is a gripper integrally formed with a table 1 on which a package to be packed is placed, and a cutter section for cutting the film at the lower portion of the table 1 while gripping the leading end of the film. 20
A rotating drum 30 that circulates around the package on the table 1, a film tensioning device 40 fixed to the rotary drum 30 and extending the leading end of the film around the package, and disposed below the table 1 Grip device 20 fixed to gripper 20
And a film terminal processing device 60 fixed to the gripper 20.

Table 1 on which a package A to be packed is placed
Is formed on the upper surface of the apparatus main body. Then, a rotating drum 30, which will be described later, rotates around the package A placed on the table 1 and winds the film. Reference numeral 2 denotes a protective cover when the rotating drum 30 rotates, and reference numerals 3 and 3 denote packages A on the table 1.
Is a guide roller for placing the sheet. 4 is a front cover and 5 is operation switches.

First, the structure of the gripper will be described mainly with reference to FIGS. Reference numeral 20 denotes a gripper arranged at the lower portion of the table 1. The gripper 20 has a grip portion for gripping the film front end Fa of the film F and a cutter portion 21 for cutting the film F.

The gripper 20 is composed of a pair of grip arms 20a and 20b, and is slidable by a slide guide 23 in an openable / closable air chuck 22. One grip arm 20a
Has a grip portion 2 urged by a spring 24a.
4 is fixed to the slide bar 24b and the grip arm 20
a, and a cutter 2 is provided on the upper surface.
1a is attached by a cutter retainer. The other grip arm 20b is provided with a cutter receiver 21.
b is formed. Also, one grip arm 20
A lining made of rubber or the like is formed on the mutually facing surfaces of the grip portion 24a and the other grip arm 20b so as to hold the clamping force of the film front end Fa. When the film F is gripped by the pair of grip arms 20a and 20b, the spring 24a of the grip portion 24 is compressed and the cutter portion 21 comes out.
The film is cut by a and the cutter receiver 21b.

The air chuck 22 has a connection pin 2
2a is formed and connected to an air cylinder 26 via a link 25 having a long groove, and retreats in a perpendicular direction (vertical direction in the drawing of FIG. 3) as shown by an arrow from a rotating orbit of a rotating drum 30 described later. It is configured to be. Accordingly, only one drive source is required for the gripper 20 and the cutter unit 21, and the grip and cut of the film F can be performed simultaneously, so that the cycle time can be reduced.

As described above, the gripper 20 retreats from the orbit while gripping the front end Fa of the film.
When the film F is wound around the package A, the gripper 20 does not remain between the package A and the film F.
Can be securely tightened, and no loosening occurs. In addition, any shape of the package can be packed regardless of the shape of the package.

Numeral 30 denotes a rotary drum 30 which circulates around the package A on the table 1. The rotary drum 30
Are guided by guide rollers 31, 31,... The reduction gear 32 is provided on the outer peripheral surface of the rotating drum 30.
An endless belt 33 is stretched between the pulleys 32a, and is configured to transmit a driving force of a servo motor 34 as a driving source via a timing belt 35 (see FIG. 1).

Reference numeral 36 denotes a rotation position reference fixed to the rotary drum 30. An origin position detection sensor 36a is disposed opposite to the position reference 36, and the rotation drum 30
The deceleration position detection sensor 36b is arranged on the rotation orbit of the vehicle. Then, the origin position detection sensor 36a detects a preset number of rotations of the rotating drum 30, and the rotation speed of the motor 34 is switched from high speed to low speed by the deceleration position detection sensor 36b. At this time, since the servomotor 34 is used as the drive source, the impact at the time of deceleration can be reduced, the software can be reduced, and the drive mechanism can be reduced in size and weight.

In particular, a packing device using a stretch film has a very large moment of inertia of a rotating portion due to its configuration, so that special consideration is required for stopping the rotating force. By using the servo motor 34, the starting and stopping mechanism of the servo motor 34 is greatly simplified, and the size and speed of the entire apparatus can be reduced. In addition, by appropriately selecting the acceleration and deceleration times of the servo motor 34, the impact at the time of start and stop is reduced even though the motor rotates at a high speed in use. Can be stopped. Further, as the rotation diameter of the rotary drum 30 increases, the moment of inertia increases accordingly, and the acceleration torque during acceleration also becomes the maximum torque. However, the required minimum motor capacity can be selected by increasing the acceleration time. .

Next, the structure of the film tension device 40 will be described with reference to FIG. The film tensioning device 40 includes a reel bracket 41 extending outward from the rotary drum 30 and holding a reel R of the film F, an L-shaped roller bracket 42 having a fulcrum 42 a fixed to the rotary drum 30, and , A guide roller 43 fixed to the rotating drum 30, an arm 44 fixed to the tip of the roller bracket 42, a fulcrum 42a to which the roller bracket 42 is fixed, and a guide roller 43.
And a swing roller 45 fixed to the free end 44a of the arm 44.

FIG. 6 is a sectional view of the roller bracket 42 taken along the line II-II. Chain sprockets 46a and 47 of the same diameter are provided at predetermined intervals on the roller bracket 42.
The small-diameter roller 46 having a and the large-diameter roller 47 are connected via a chain 48. Reel bracket 41
The springs 44b and 4c are respectively provided between the base end of the arm 44 and the free end 44a of the arm 44, and between the tip 41a of the reel bracket 41 and the adjusting screw 42c mounted via the screw bracket 42b at the end of the roller bracket 42.
2d is stretched. Reference numeral 42e is a rotary knob for adjusting the tension of the spring 42d. Then, the film F of the reel R held on the reel bracket 41 is brought into contact with the small-diameter roller 46, and the film F is stretched from the reel R via the large-diameter roller 47, the guide roller 43, and the swing roller 45 sequentially. It is like that. The amount of stretching of the film F changes depending on the diameter ratio of the small diameter roller 46 and the large diameter roller 47 and the spring tension of the springs 44b and 42d. Further, a constant tension is always maintained by a swing roller 45 provided at a free end 44a of the arm 44.

FIG. 7 is a sectional view of the reel bracket 41 taken along the line II-II.
Is held by a spring holder 41b. A brake lining 41d abuts on the base of the reel R via a spring 41c from an adjusting screw 41f attached to the base end of the reel bracket 41 via a screw bracket 41e, thereby preventing the film F from being fed in an empty state. The diameter ratio of the small diameter roller 46 and the large diameter roller 47 and the spring 44
b, 42d, together with the change due to the spring tension, has an auxiliary function of adjusting the stretching amount of the film F,
The tension of the spring 41c can be adjusted by the rotary knob 41g.

Next, a method and an apparatus for processing the front end of the film grip will be described. Reference numeral 50 denotes a film grip tip return device. The return device 50 retracts the film tip Fa gripped by the gripper 20 from the rotational orbital position of the rotary drum 30 and tightens the film tip. Then, the gripper 20 releases the film tip Fa. In this case, a leading end processing mechanism is provided in which the leading end Fa of the film is returned to a rotating orbit at a timing during the winding of the film F around the package A by the film tensioning device 40 of the rotating drum 30 and wound around by the orbiting film.

This film grip tip return device 50
Is disposed at the upper surface position of the gripper 20 via the bracket 55. That is, it is arranged between the table 1 on which the package A is placed and the gripper 20. In the embodiment shown, the tip return device 50 is the gripper 20.
And is configured to retreat from the orbital position of the rotating drum 30. The means for returning the film of the return device 50 uses a device based on air pressure, and the device 50 is provided with a nozzle 51 having an outlet 52. As shown in FIG. 16, the blowing direction of the compressed air from the blowing port 52 of the nozzle 51 is such that the opened film front end Fa passes through the rotating orbit of the rotating drum 30,
That is, it is the direction of blowing back onto the orbit of the orbiting film.
The nozzle 51 of the return device 50 is connected to a solenoid valve 54 via an air tube 53. Then, by blowing back the film front end Fa, the film front end Fa is caught by the circulating film, and after packing, the film front end Fa does not become an obstacle, and the packaging state becomes a beautiful finished state.

Next, a method and an apparatus for processing a film cut terminal will be described. Reference numeral 60 denotes a film terminal processing device. The processing device 60 is a mechanism for bringing the cut end of the film F into close contact with the orbiting film of the package, and has a nozzle 61 provided with a large number of outlets 62, 62,. Have been. The nozzle 61 is connected to a solenoid valve 64 by an air tube 63. This nozzle 61
Are set so that the compressed air is blown from the rear position of the gripper 20 toward the cut terminal for an appropriate time as shown in FIG. Due to the self-adhesion of F itself, it is adhered onto the circling film wound around the package A. The nozzle 61 is fixed to the air chuck 22 of the gripper 20 via a bracket 65, and is configured to retreat with the gripper 20 from the rotating orbit of the rotary drum 30.

Accordingly, the film terminal processing device 60 has a simple structure in which compressed air is used to blow the rear end of the gripper 20 toward the cut end of the film F, while utilizing the self-adhesiveness of the film. As a result, the film can be securely brought into close contact with each other, the film is difficult to be unwound, and any shape of the package can be brought into close contact. Furthermore, since compressed air is used, the film F has the effect of preventing scratches.

Next, the operation of the entire apparatus will be described. First, the package A is placed at a predetermined position in the rotary drum 30 while being guided by the guide rollers 3 on the table 1. At this time, the front end Fa of the film is transferred from the reel R to the lower gripper 20 of the table 1 via the small-diameter roller 46 , the large-diameter roller 47, the guide roller 43, and the swing roller 45.
Is gripped by Then, the film F includes a small-diameter roller 46 , a large-diameter roller 47, and a guide roller 43,
By the action of the oscillating roller 45, it is wound around the package A while applying an appropriate tension.

When the film F starts to wind around the package A by turning on the start switch (foot type), the gripper 20 holds the film front end Fa while gripping the film front end Fa from the rotating orbit of the rotating drum 30 to a position where the film comes off. Evacuate and move to. Then, when the rotation position reference 36 fixed to the rotating drum 30 is detected by the origin position detecting sensor 36a, it is detected that the rotating drum 30 has made one rotation, and the orbiting film in the second rotation is moved to the first rotation. The film is rolled up and rotated continuously. When the film of the second rotation winds the film of the first rotation, the grip arms 20a and 20b of the gripper 20 are released, and the gripped film front end Fa is in a free state. Subsequently, when two rotations are detected by the origin position detection sensor 36a, compressed air is blown from the nozzle 51 of the film grip tip return device 50 for an appropriate time, and the film tip Fa returns to the rotating orbit. And it is rolled up by the third round film. When the rotation of the rotating drum 30 completes the winding operation of the film F around the package A, the rotation speed of the motor is switched from high speed to low speed by the deceleration position detection sensor 36b. The servo motor 34 stops at the correct position of the rotary drum 30 by 36a.

Thereafter, the grip arms 20a and 20b of the gripper 20 advance from the retracted position to the orbital position of the rotary drum 30 while being opened, and grip the film F again. When the film F is gripped, the spring 24a of the grip portion 24 is compressed and the cutter portion 21 comes out, so that the film F is cut by the cutter 21a and the cutter receiver 21b, and the film on the side of the packaged material A is in a free state. , The gripper 20 remains gripped. Almost at the same time when the film F is cut, the nozzles 61 provided with the outlets 61a, 61a,.
As shown by the arrow, compressed air is blown out for an appropriate time to bring the cut end of the film F into close contact with the orbiting film wound around the package A. Thus, the packing operation is completed.

The above-described film winding operation is described for the case where the film is wound around the package A three times. However, as shown in FIGS. The program settings can be changed as follows. When packing a plurality of packages, first place one package A on the table 1,
The film A is wound around the package A. After that, the rotating drum 30 is temporarily stopped, and another package B is placed on the same table 1. Then, the work of winding the film F is performed again. As a result, at least one or more films are interposed between the two packages A and B, so that even if the two packages A and B are displaced, it is possible to prevent the occurrence of scratches. In the above-described embodiment, the case where the number of the packaged items is two has been described.
Even in the case of three or more packages, the number of times of stopping and restarting the rotating drum may be set in advance, or may be manually switched.

Furthermore, at this time, by winding the film F in a spiral shape as shown in FIG. 24, in the case of a long packaged product, the effect of preventing the occurrence of scratches can be enhanced. In order to wind the film in a spiral shape, an operator can visually move the package, but a roller, a conveyor, or an automatic feed mechanism for the package connected to a motor is provided on the table 1, and the rotation is performed. Drum 30
If the film is spirally wound in synchronization with the film winding operation, the labor can be reduced. The operations of the gripper 20, the rotating drum 30, the film tension device 40, the film grip leading end returning device 50, the film terminal processing device 60, and the like are the same as those in the above-described embodiment.

[0039]

According to the present invention, as described above, a package is placed on a table, a film is stretched from a film tension device fixed to a rotary drum, and the stretched film tip is gripped by a gripper. When rotating the rotating drum that rotates around the package on the table and winding the film around the package, retract the gripper from the rotating position of the rotating drum while gripping the film tip, and rotate the rotating drum several times. When the film is wound around a package, the gripping force of the gripped film tip is released, and the film tip is blown back to the rotating position of the rotating drum by the film tip blowing back device, and wound between the orbiting films, After that, the rear end of the film is cut by the cutter unit provided integrally with the gripper, Film type packing method being characterized in that so as to pack the packing article is brought into close contact with cut film rear end in the circumferential film by an end processing apparatus,
Providing the packing device has the following effects.

1. By integrating the gripper and cutter, the film can be gripped and cut at the same time, and the cycle time can be shortened. 2. When the film is wound around the package, the gripper is retracted while gripping the film tip, so there is no gripper between the package and the film, so the package can be securely tightened and any shape Packing items can also be packed. 3. The film grip end return device causes the film grip end to be wrapped between the circling films, so that the packaging finish is beautiful. 4. Since the end of the film wound around the package and cut is brought into close contact with the compressed air, it is possible to bring the film into close contact without being restricted by the shape of the package. 5. Optimum film tension is obtained by the film tension device, and a servomotor is used, so that the mechanism can be simplified and high-speed packing can be performed.

[Brief description of the drawings]

FIG. 1 is a front view of a packing device used in a packing method of the present invention, with a front cover removed.

FIG. 2 is a perspective view of the entire packing device.

FIG. 3 is a plan view showing a state where a gripper is opened.

FIG. 4 is an explanatory sectional view of a state in which a film is cut.

FIG. 5 is an enlarged view of the film tension device.

FIG. 6 is a sectional view taken along the line 〓-〓 in FIG. 5;

FIG. 7 is a sectional view taken along the line VII-VII in FIG.

FIG. 8 is a plan view showing the structure of a film cut terminal processing device.

FIG. 9 is an explanatory diagram of the operation after the film is cut.

FIG. 10 is a side view showing the structure of the film grip tip return device.

FIG. 11 is an explanatory front view of a state before starting to wind a film.

FIG. 12 is an explanatory front view of a state where the film has begun to be wound.

FIG. 13 is an explanatory plan view showing a state in which the gripper is retracted in FIG. 11;

FIG. 14 is an explanatory front view showing a state in which the film is circling.

FIG. 15 is an explanatory front view showing a state in which the gripping force of the retracted gripper is released and the leading end of the film is separated from the gripper.

FIG. 16 is an explanatory plan view showing a state where the operation of the film grip end return device in FIG. 15 has begun.

FIG. 17 is an explanatory plan view showing a state in which the film grip end return device is operated in FIG. 15 and the leading end of the film is returned to the rotating orbit of the rotary drum.

FIG. 18 is an explanatory front view showing a state after the end of the film grip has been wound.

FIG. 19 is an explanatory diagram showing an operation from start to stop of the motor.

FIG. 20 is an explanatory front view of a state in which the film has been wound around one package according to the method of the second invention and the rotary drum has been temporarily stopped.

FIG. 21 is a front view showing a state where another package is placed on a table and the film winding operation is started again.

FIG. 22 is an explanatory front view of a state where the film is wound around a plurality of packages.

FIG. 23 is an explanatory front view of a state where a film is wound around a plurality of packages.

FIG. 24 is a plan view of the single winding state and the spiral winding state of the film in FIG. 23;

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Table 20 Gripper 30 Rotary drum 40 Film tension device 50 Film grip tip return device 60 Film terminal processing device

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Osamu Mochizuki 155 Nagasaki, Mishima City, Shizuoka Prefecture 8 Maruzen Kogyo Co., Ltd. (56) References JP-A-52-32783 (JP, A) JP-A-63- 218014 (JP, A) JP-A-63-218015 (JP, A) JP-A-1-37317 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 11/00-11 / 58

Claims (6)

(57) [Claims] 1. A method for packing a package on a table with a film by a rotating operation of a rotary drum,
After retracting the gripper gripping the leading end of the film from the rotating orbital position of the rotating drum and rotating the rotating drum, returning the leading end of the film to the rotating orbital position of the rotating drum and winding the winding film between the orbiting films and packing the packing material. A film-type packing method characterized in that: 2. A method for packing a packaged material on a table with a film by a rotating operation of a rotary drum.
After retracting the gripper gripping the leading end of the film from the rotating orbital position of the rotating drum and rotating the rotating drum several times, the leading end of the film is returned to the rotating orbital position of the rotating drum by the film leading end returning device, and the rotating film is rotated. Roll in between, then cut the back end of the film,
A film-type packing method, wherein a package is packed by bringing a rear end of a film cut by a film terminal processing apparatus into close contact with a circling film. 3. A film type packaging method according to claim 2, wherein at least one film is interposed between the packages when packing a plurality of packages. Packing method. 4. A table on which a package to be packed is placed,
A gripper integrally formed with a cutter unit for cutting the film while gripping the leading end of the film at the lower part of the table, a rotating drum orbiting around the package on the table, and a package fixed to the rotary drum and fixed to the package. It is composed of a film tension device that stretches and winds the film tip, a film grip tip return device fixed to a gripper arranged at the lower part of the table, and a film terminal processing device fixed to the gripper, wherein the gripper is When the film is wound around the package by rotating the rotating drum several times, the gripping force of the gripped film tip is released and the film tip is released. Activate the return device and cover the rear end of the film with the cutter. Packaging device, characterized in that the film end processing apparatus so as to operate after the bets. 5. The packing device according to claim 4, wherein the film tensioning device is formed in an L-shape having a reel bracket extending outward from a rotary drum and holding a film, and a fulcrum fixed to the rotary drum. A roller bracket, a guide roller fixed to the rotating drum, an arm fixed to the end of the roller bracket, and a free end of the arm between a fulcrum to which the roller bracket is fixed and the guide roller. Oscillating roller, and at a predetermined interval on the roller bracket,
An adjustment screw formed between the base end of the reel bracket and the free end of the arm and between the base end of the reel bracket and the free end of the arm , and a small diameter roller and a large diameter roller having the same diameter chain sprocket are formed on the roller bracket. Between the small-diameter roller and the film held on the reel bracket by stretching springs between them, and extending the film sequentially through the large-diameter roller, the guide roller, and the swing roller. Characteristic packing equipment. 6. A packing device according to claim 4, wherein a deceleration position detecting sensor for decelerating the rotational force of the rotary drum and an origin position detecting sensor are provided on a rotary orbit of the rotary drum, and a rotary drive source for the rotary drum. A packing apparatus characterized by including a servomotor.