JPS63218014A - Film terminal processor for film packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a film packaging device for wrapping the outer periphery of an object with a film, and particularly relates to a film wrapping device for wrapping the outer periphery of an object with a film while applying tension. The present invention relates to a film end processing device for a film packaging device that can prevent the film from being broken at the corners of an object to be packaged.

[Prior Art] Conventionally, in film packaging, so-called stretch packaging has been carried out, in which a thin transparent film is stretched around the outer periphery of the object and wrapped around it. This film packaging has the advantage that the items to be packed can be packed more easily and in a shorter time than the conventional stringing method or carton case method.

[Problems to be Solved by the Invention] However, in this film packaging, the objects to be packaged often have sharp corners, such as laminated sheets of plate glass or a collection of wooden boxes, so it is difficult to wrap the film under tension. If this happens, the problem arises that the film may be cut at the corners.

For this reason, the present applicant previously proposed a stretch packing method (Japanese Patent Application No. Sho&0-271975).

This method will be explained with reference to FIGS. 18 to 21.
As shown in Figure 1, a rod C is placed at the corner of the object a, and in this state, the film e is unwound from the film roll d. Wind the film e while applying tension to the film e by rotating it in the direction shown in FIG. FIG. 18 shows the finished state of the film e, in which the film e is held by the rod C while maintaining tension.

Next, from the state shown in Fig. 18, move the rod C from the corner to the center of the side as shown in Fig. 19, and pull up the rod C as shown by the two-dot chain line in Fig. 21. By pulling the film e out from between the film e and the object to be packed 8, the wrapped film e is pulled out from between the object to be packed a as shown in FIG. 20 due to its tension.
The object to be packaged a is wrapped in a film. In this case, the film e is in a state of being laminated in many layers, and because of its strength, the film e will not break even if it hits a corner.

As mentioned above, the invention of the prior application can effectively solve problems in film packaging.

An object of the present invention is to provide a film end processing device for a film packaging device that utilizes the invention of the prior application described above and can automate the film wrapping of objects to be packaged.

[Means and operations for solving the problems] In order to achieve the above object, the present invention places an object to be packed on a turntable, rotates the turntable, and applies a film around the outer periphery of the object to be packed. A film packaging device that feeds and wraps the film is equipped with a brush device that presses the end of the film wound around the object to be packed onto the surface of the film wrapped around the object. By pressing the film onto the film surface with a flexible brush, it is possible to prevent problems such as peeling of the film end and the peeled film getting caught on the transfer line or sensors during the transportation of the packaged items. This is how it was done.

[Example] Hereinafter, preferred embodiments of the film end processing device of the film packaging device according to the present invention will be described based on the accompanying drawings.

FIG. 1 shows an example of film packaging of an object to be packaged, which is a collection of several boxes.

In FIG. 1, reference numeral 1 denotes a turntable on which an object to be packed 2 is placed and rotates, and a conveyor 3 for carrying in the object to be packed 2 and a conveyor 4 for carrying out the object to be packed are arranged in front of the turntable.

On the turntable 1, there is provided an article transfer means 5 comprising rollers that receives the article 2 from the carry-in conveyor 3 and transfers it to the discharge conveyor 4 after packaging.

A protective frame unit 8 having protective frames 7 corresponding to the number of corners 6 of the object to be packed 2 is provided above the turntable 1. This protective frame unit 8 includes a support arm 10 that is provided on a support 9 so as to be able to rise and fall freely, and a base frame 11 that is rotatably provided on the support arm 10 and whose rotation axis coincides with the rotation axis of the turntable 1. , a support frame 12 provided at the lower part of the base frame 11 and movable in the left-right direction when the base frame 11 is stopped; and a protection frame 7 provided movably in the front-back direction along the support frame 12. and a moving body 13 that suspends and supports the.

The support arm 10 is moved up and down by a lifting device (not shown), and the base frame 11 is rotated by a rotary drive device 14 in synchronization with the turntable 1 below.

The support frame 12 is moved by a horizontal movement device 15 such as a ball screw provided on the base frame 11, and the movable body 13 supporting the protection frame 7 is moved by a longitudinal movement device 16 such as a ball screw provided on the support frame 12. will be moved.

The support column 9 is provided with a film supply means 19 for wrapping a film 18 around the outer periphery of the object 2 to be packed. This film supply means 19 is provided on the support 9 so as to be movable up and down, and even if the width of the film 18 is small relative to the height of the object 2 to be packed, the film supply means 19 is sequentially moved up and down to raise and lower the height of the object 2 to be packed. The film 18 can be supplied depending on the situation.

Each of the protection frames 7 has a guide roller 17, and can be moved symmetrically with respect to the center of rotation by the left-right movement of the support frame 12 and the back-and-forth movement of the movable body 13.

The protection frame 7a on the side of the film supply means 19 and on the side of the conveyor 4 for carrying out of this protection frame 7 is provided with a chuck device i! for gripping the winding start end of the film 18 from the film supply means 19! 60 are provided.

As shown in FIGS. 2 to 4, this chuck device 60 is provided with a film presser 61 having a height commensurate with the width of the film 18 at the bottom of a protective frame 7a, and a film presser at the upper end of the film presser 61. 62 are openably and closably connected by a bottle 63, and a rod portion 65 of a chuck cylinder 64 hinged to the protective frame 7a is connected to the presser bar 62.

Further, the side of the film holding base 61 facing the object to be packaged 2 is raised as shown in FIG. 4, and a cutter 66 for cutting the film 18 is provided on the raised portion 61a. This cutter 6
6 consists of a plurality of needles 67 as shown in FIGS. 3 and 4, and the needles 67 are attached so as to protrude horizontally along the raised portion 61a at vertical intervals.

A brush device 70 is provided on the unloading side behind the cutter 66 for pressing the end of the winding of the film 18 of the object to be packaged 2 cut by the cutter 66 against the wound film 18 to bring it into close contact. This brush device 70 includes a brush main body 71 having a width substantially the same as the height of the object 2 to be packed, and a seven-piece cutter 72 for pressing the brush main body 71 toward the object 2 to be packed. The actuator 72 moves the object to be packed 2 from the retracted position of the brush body 71 so that the brush portion 71a of the brush body 71 can be appropriately pressed.
The brush main body 71 is moved a predetermined distance toward the object to be packed 2 according to the distance from Alternatively, the actuator 72 is driven by a sensor located directly across the distance between the object to be packed 2 and the brush body 71.

Next, the operation of this embodiment will be explained.

First, an outline of basic film packaging will be explained with reference to FIG.

The object to be packed 2 is transferred from the carry-in conveyor 3 to the object transfer means 5 on the turntable 1. During the transfer, the support frame 12 of the protection frame unit 8 is moved in accordance with the horizontal width of the object to be packed 2, and at the same time, the movable body 13 is moved in accordance with the longitudinal width of the object to be packed 2, and the guide roller of the protection frame 7 is moved. 17 is positioned at the corner 6 of the object to be packed 2 as shown in the figure.

Next, the film 18 is sent out from the film supply means 19, its leading end is supported by the object to be packed 2 or the protection frame 7, and in this state, the turntable 1 and the protection frame unit 8 are synchronized and rotated in the direction of the arrow shown in the figure. A film 18 is wrapped around the outer periphery of the object 2 together with the protective frame 7. In this case, the film supply means 19 supplies the film 18 so that a constant tension is applied to the film 18.

After winding the film 18 a predetermined number of times, the rotation of the turntable 1 and the protection frame unit 8 is stopped, and the end of the film 18 is cut with a cutter (not shown).

Next, the movable bodies 13 of the protection frame unit 8 are moved so that the front and rear sides approach each other, the protection frame 7 is moved from the corner 6 of the object 2 to the center of the side, and the protection frame unit 8 is further raised. When the protective frame 7 is removed from between the film 18 and the object to be packed 2, the film 18 is brought into close contact with the outer periphery of the object to be packed 2 due to its tension, and the object to be packed 2 is wrapped in a film.

After completing the film wrapping, the object 2 to be packed is transferred by the transfer means 5 to the conveyor 4 for carrying out, and a new object 2 to be packed is again wrapped in film as described above.

The above is an outline of film packaging. Next, the functions of the chuck device 60 for the film 18, the cutter 66, and the brush device 70 provided in the protective frame 7a will be explained with reference to FIGS. 5 to 10.

As shown in FIG. 5, when the film 18 starts to be wound, the starting end 18a of the film 18 is gripped by a chuck device 60 provided on the protective frame 7a, and the object to be packed 2 is rotated in the direction of the arrow shown in the figure. As a result, the film 18 is wrapped around the outer periphery of the object 2 a predetermined number of times as shown in FIG.

After winding the film 18 a predetermined number of times, as shown in FIG.
When the presser bar 62 is retracted and the presser bar 62 is opened from the presser stand 61, the starting end 18a of the film 18 is pulled into the chuck device 60 by the tension.
It comes off from the film and adheres to its outer layer film 18. Next, the protective frame 7a is moved to the center side of the object to be packaged 2 as shown in FIG. Move the protective frame 7a to the winding end 18b of the film 18,
The winding end 18b is gripped by the chuck device H60. At this time, the needle 67 of the cutter 66 is stuck into the end 18b of the film 18. When the object to be packaged 2 is transferred to the delivery conveyor 4 in this state, the winding end 18b is cut by the cutter 66 as shown in FIG. 9, and at the same time, the starting end 18a of the film 18 is
0, and a new object 2 to be packaged is wrapped in film again.

Next, as the object 2 to be packed is further conveyed, as shown in FIG. , its winding end 18b
is brought into close contact with the surface of the film 18 of the object to be packaged 2. In this case, the actuator 2
so that the winding end 18b can be appropriately pressed against the film 18 side by the elastic force of the brush portion 71a.
The brush body 71 is moved according to the distance between the brush device 70 and the object 2 to be packed, and is returned to its original position after the object 2 has passed.

11 to 17 show other embodiments of the present invention, in which an object to be packaged made of laminated plate glass is wrapped in a film.

First, the object to be packed 2 is made up of a large number of laminated glass plates 20 as shown in FIG.
is placed on a pallet 21 for transport.

The pallet 21 consists of a frame body 22 in the shape of a base grid, and has holes 23 for handling to separate and lift the object to be packed 2 from the pallet 21, as described later, and to prevent the object to be packed 2 from shifting. and rubber bat 2 for ms absorption
4 are provided at appropriate locations on the frame body 22.

Figures 11 to 13 show the entire film packaging device for packaged objects 2 made of plate glass 20, with Figure 11 being an overall perspective view, Figure 12 being a plan view, and Figure 13 being a front view. .

This example is basically the same as the embodiment shown in FIG. 1, but the rotational directions of the turntable 1 and the protective frame unit 8 are opposite to those in FIG. The chuck device 60 and the brush device 70 are also reversed, a pallet separation device 25 for separating the pallet 21 and the object to be packed 2 is provided on the turntable 1, and the transfer means 5 is composed of a chain conveyor 26 and the table Lifter 27
The difference is that the film feeding means 19 is raised and lowered by the film feeding means 19.

First, the turntable 1 is rotatably provided on a support base 28 and rotated by a rotation drive device 29, and the protection frame unit 8 is rotated by this rotation drive device 29 in synchronization with the turntable 1. That is, the rotation of the turntable 1 is controlled by the timing gear 3 as shown in FIG.
0, and the rotation of the timing gear 30 is transmitted from the timing belt 31 to the ball spline shaft 32 provided in the support column 9 via the gear 33. This ball spline shaft 32 has a support arm 10 of the protection frame unit 8.
A driven gear 34 provided at
is adapted to rotate in synchronization with turntable 1. Further, within the support column 9, an elevating device 36 such as a hydraulic cylinder for elevating the protective frame unit 8 is provided.

As explained in FIG. 1, the protective frame unit 8 includes a support arm 10 that can be raised and lowered on a support column 9, a base frame 11 that is rotatably provided on the support arm 10, and a moving device that is provided on the base frame 11. It consists of a support frame 12 which is movable in the left and right directions at 15, and a moving body 13 which supports the protection frame 7 and is movable in the front and rear directions by a moving device 16.

The protective frame 7b on the side of the film supply means 19 and the conveyor 4 for carrying out the protective frame 7 is provided with a chuck device V for gripping the starting end of the film 18 as explained in FIGS. 2 to 4. 160
and a cutter 66 are provided.

Further, a brush device 70 is provided behind the cutter 66 for bringing the winding end of the film 18 into close contact with the film 18.

On the other hand, a table lifter 27 is provided on the turntable 1, as shown in FIG. This table lifter 27
The table section 37 that supports the chain conveyor 26 that is the transfer means 5, the link mechanism 38 provided between the table section 37 and the turntable 1, and the table section 37
It consists of a lifting cylinder 39 for lifting and lowering.

As shown in FIGS. 14 and 16, the transfer means 5 is provided with sprockets 41 at the front and rear of a support plate 40 that is provided in parallel along the front-rear direction on the table portion 37. It consists of a chain conveyor 26 in which a chain 42 having an attachment (not shown) for supporting the sprockets 21 is endlessly extended.One sprocket 41 is connected by a shaft 43, and the shaft 43 is rotationally driven by an electric motor 44 and a transmission gear 45. It is supposed to be done.

Further, a guide rail 46 is provided on the support plate 40 between the front and rear sprockets 41 to support the chain 42.

Between this chain conveyor 26, there are holes 2 of pallet 21.
A pallet separation device 25 is provided for holding the object 2 through the pallet 3 and separating the object 2 and the pallet 21 from each other.

As shown in FIGS. 14 and 15, this pallet separation device fa25 includes a fixed head 49 provided on a base plate 48 attached to the center of the turntable 1, and fixed heads 49 provided on both sides of the fixed head 49. It consists of a side head 50 that can be raised and lowered with respect to the head 49, and the side head 50 is raised and lowered by a hydraulic cylinder 51 provided on the base plate 48. In addition, as shown in FIG.
An opening 52 is formed for the insertion.

The fixed head 49 has three fixed head parts 49A, 49B, and 49C in the front and back direction, and a side head 50.
There are also three lifting head parts 50A.

It has 50B and 50G. These head parts 49A to 49C,
50A-C have rubber pads 53 attached to their surfaces.

Each head portion 49A, 498° 490 of the fixed head 49 and each head portion 50A of the side head 50.

50B and 50C are pallets 21 as shown in FIG.
are arranged so as to correspond to each hole 23, and each hole 2
3 on the pallet 21 through the head parts 49A, 49B,
49G, 50A, 50B.

50G is now able to appear.

In this case, each head portion 49A of the fixed head 49.

49B and 49C are fixed, and by lowering the height of the pallet 21 with the table lifter 27, the pallet 2
1, its head portion 49A.

49B and 49C can protrude, and the maximum height of each head portion 50A, 50B, and 50C of the side head 50 is at the same level as each head portion 49A, 49B, and 49C of the fixed head 49.

Furthermore, the chain conveyor 26 is connected to the table lifter 2.
7 from a position higher than the height of each head section 49A-C, 50A-C.

It is possible to move up and down within a range that is lower than 50A-C.

The film supply means 19 includes two film supply rolls 54A as shown in FIGS. 11 and 12.

54B, a guide roller 55 for guiding the film 18, and a pinch roller 56 for applying tension to the film 18.
and a tension roller 57 for guiding the packaged object 2 while applying tension thereto, and a cutter 58 for cutting the film 18 at the end of winding.

When one of the two film supply rolls 54A and 54B is supplying film, the other 54B becomes a spare roll, and when the film 18 of one 54Δ runs out, the other 54B is placed at the end of the film 18. By overlapping the films of the preliminary roll, the film 18
can be supplied continuously.

Next, film packaging using the film packaging apparatus shown in FIGS. 11 to 17 will be described.

First, the height of the chain conveyor 26, which is the transfer means 5, is adjusted by the table lifter 27 so that it is at the same level as the preceding conveyor 3.4. in this case,
Head part 49A-C, 50△~ of pallet separation device 25
C is at a position lower than the level of the chain conveyor 26. In this state, the object to be packed 2 consisting of plate glass 20 placed on the pallet 21 is transferred from the carry-in conveyor 3 to the chain conveyor 26 together with the pallet 21, and the object to be packed 2 is transferred to the chain conveyor 26 at a position where the center of the object to be packed 2 and the center of the turntable 1 coincide. Chain conveyor 26 is stopped.

Next is the fixed head portion 49A of the fixed head 49.

Side head 5 to be on the same level as 49B and 490.
When the head parts 50A, 508 and 50G of the table lifter 27 are raised, the lifting cylinder 39 (Fig. 14) of the table lifter 27 is driven to lower the table part 37, and the chain conveyor 26 is lowered. 21 descends together with the chain conveyor 26, but the objects 2 to be packed are separated from the pallet separation table 'a25 (7) each head section 49A-C, 50A.
~Cf: Supported, and the pallet 21 and the object to be packed 2 are separated.

Next, each protection frame 7 of the protection frame unit 8 has an idler roller 17.
The support frame 12 is positioned so that the
and move the moving body 13.

After the protective frame 7 has been set, the film supply means 1
9, the film 18 is gripped by the chuck device provided on the protective frame 7, and the turntable 1 is moved by the two drive devices.
When the object 2 is rotated, the object 2 to be packaged is rotated through the pallet separating device 25, and at the same time, the protective frame unit 8 is rotated in synchronization with the turntable 1, and the object 2 is wrapped in a film as explained in FIG. Become.

In this case 1, the supply amount of the film 18 is controlled by the pinch roll 56 of the film supply means 19, and the film 18 is maintained at an appropriate tension.

After the film 18 has been wound a predetermined number of times and the rotation of the turntable 1 has been stopped, the grip of the film 18 by the chuck device 6o is removed, and each protection frame 7 is moved around the object to be packed 2.
The protective frame unit 8 moves from the corner 6 to the center side.
is raised to handle the protective frame 7, and the winding end of the film 18 is gripped again by the chuck device 60.

In this state, the table lifter 27 is raised to raise the chain conveyor 26 with the pallet 21 placed thereon, and the objects 2 to be packed are transferred from the pallet separation table a25 onto the pallet 21. When the film-wrapped object 2 is transferred to the conveyor 4 together with the pallet 21, the end of the winding of the film 18 is cut by the cutter 66 provided on the protection frame 7b, and the starting end of the film 18 is cut by the chuck device 60. grasp. Furthermore, when the packaged item 2 is transferred, a brush device is applied! At 70, the end of the winding of the film 18 is pressed against the surface of the film 18 and brought into close contact. In this way, a new item 2 to be packaged is again wrapped in film as described above.

In the film packaging shown in FIGS. 11 to 17, the lower part of the film 18 is lowered from the lower part of the object 2 to wrap the outer periphery of the object 2 made of plate glass 20 lifted from the pallet 21. It can be wrapped at a low height, and after wrapping the film, the edges of the film are in close contact with the bottom periphery and the top periphery of the object 2 to be packed, and when wrapped, the film 18 protects not only the outer periphery of the object 2 to be packed, but also the upper and lower peripheries thereof. A laminated body such as a finished glass plate 20 can be almost completely packaged without the package being undone.

Further, since the end of the winding of the film is brought into close contact with the film surface by the brush device 70, there is no problem in transporting the packaged object 2 after packaging.

[Effects of the Invention 1 As is clear from the above detailed description, the present invention exhibits the following excellent effects.

(1) When wrapping the outer periphery of an object with a film, the film is wrapped with a protective frame applied to the corner of the object, so the film does not break at the corner at the beginning of wrapping.

■ After wrapping the film, by moving the protective frame from the corner and pulling it out, the tension of the entire wrapped film tightens the outer periphery of the item to wrap it in film, so there is no chance of film loss at the corner. It is possible to wrap the film evenly over the entire surface without any problems.

(3) A brush device is installed that presses the end of the film wrapped around the item to be packaged into tight contact with the surface of the wrapped film, so the end of the film does not peel off, which prevents transportation from becoming a hindrance. It becomes possible to achieve automation of film packaging.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is an overall perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the film chuck device shown in FIG. is a front view with the film removed in Figure 2, and Figure 4 is the IV of Figure 2.
-IV line sectional view, Figures 5, 6, 7, 8, 9, and 10 are process diagrams showing the operation of the film chuck device in film packaging in the present invention. 1
Fig. 1 is an overall perspective view showing another embodiment of the present invention, Fig. 12 is a plan view of Fig. 11, Fig. 13 is a front view of Fig. 11, and Fig. 14 is a view taken along line 8-A of Fig. 13. Arrow view, Figure 15 is 11th
FIG. 16 is a detailed perspective view of the pallet separating device in FIG. 13, FIG. 17 is a detailed perspective view of the objects to be packed and the pallet in FIG. 11, and FIGS. 18 to 21. 18 and 19 are diagrams illustrating the invention of the earlier application; FIGS. 18 and 19 are plan views showing the process of wrapping an object in a film; FIG. 20 is a plan view of the object after being wrapped in a film; and FIG. FIG. 2 is a schematic perspective view showing the state of film packaging. In the figure, 1 is a turntable, 2 is an object to be packed, 5 is a means for transporting objects to be packed, 6 is a corner, 7 is a protection frame, 8 is a protection frame unit, 18 is a film, 19 is a film supply means, and 70 is a It is a brush device. Patent applicant: Ishikawajima-Harima Heavy Industries Co., Ltd. Nippon Sheet Glass Co., Ltd. Ryo Matsumoto Katsutoshi Tamaishi Maru Representative patent attorney Noboru Kinutani Yuto 1 figure 11 Figure 14

Claims (1)

[Claims] In a film packaging device that places an object on a turntable and rotates the turntable, it also supplies and wraps a film around the outer periphery of the object. A film end processing device for a film packaging device, characterized in that it is provided with a brush device that presses against the surface of a film wrapped around an object.