JPS63218015A - 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. This invention relates to 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 a laminate 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 packaging method (Japanese Patent Application No. 60-271975).

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 is strong, so even if it hits the corner square, the film e will not break.

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 packaging device that utilizes the invention of the prior application described above and can automate the film packaging of objects to be packaged.

[Means and effects for solving the problems] In order to achieve the above object, the present invention arranges a vertical protection frame at the corner of an object to be packed having a polygonal horizontal cross section, and After wrapping the film around the outer circumference several times while applying tension to the protective frame, move the protective frame from the corner to the center of the side of the item to be packaged, and pull the protective frame upward from the film to remove the protective frame. In a film packaging device that wraps a packaged item in film, the protective frame is equipped with a chuck device that grips the starting end of the film.The protective frame is positioned at the corner of the packaged item, and the turntable and protective frame are By rotating in synchronization and wrapping the film around the object to be packed, the film is prevented from directly hitting the corners of the object to be packed, and by moving and removing the protective frame, the laminated film can be removed from the corner of the object. This allows the film to be wrapped in tight contact with the object to be packed using tension, and a chuck device is provided on the protective frame to enable efficient film wrapping.

[Example] Hereinafter, preferred embodiments 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 and behind it.

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 forward perturbation of the movable body 13.

A chuck device 60 for gripping the winding start end of the film 18 from the film supply means 19 is provided on the protection frame 7 a on the side of the film supply means 19 and on the side of the carry-out conveyor 4 of the protection frame 7 .

As shown in FIGS. 2 to 6, 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 is openably and closably connected by a pin 63, and a rond 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 62a at vertical intervals.

Next, the operation of this embodiment will be explained.

First, an outline of 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. After the transfer, the support frame 12 of the protection frame unit 8 is moved to match the horizontal width of the object to be packed 2, and at the same time, the movable body 13 is moved to match the front and rear 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 protection frame 7 is removed from between the film 18 and the object to be packed 2, the film 18 comes 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 and cutter 66 for the film 18 provided on 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.
As shown in FIG.
Attach to.

Next, the protective frame 7a is moved to the center side of the object to be packaged 2 as shown in FIG. Then, the protection frame 7a is moved to the winding end 18b of the film 18, and the winding end 18b is gripped by the chuck device 60. At this time, the cutter 66 has a needle 67 that is attached to the film 1.
It is in a state where it sticks to the winding end 18b of No.8. 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. 10, and at the same time the starting end 18a of the film 18 is held by the chuck device H60. Then, a new object 2 to be packaged is wrapped in film again.

The winding end 18b of the film 18 is properly attached to the surface of the wound film 18.

11 to 17 show another embodiment 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 pad 2 for shock absorption
4 are provided at appropriate locations on the frame body 22.

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

This example is basically the same as the embodiment shown in FIG. 1, but the rotation direction of the turntable 1 and the protection frame unit 8 is opposite to that in FIG. The position of is reversed.

A pallet separation device H25 is provided on the turntable 1 to separate the pallet 21 and the object to be packaged 2, the transfer means 5 is composed of a chain conveyor 26 and is raised and lowered by a table lifter 27, and the film supply means 19 They differ in their configuration.

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 @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 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 with reference to 15, and a moving body 13 which supports the protection frame 7 and is movable in the front and back directions with a moving device 16.

The protection frame 7b on the side of the film supply means 19 and the conveyor 4 for carrying out the protection frame 7 is provided with a chuck device ff160 for gripping the starting end of the film 18 as explained in FIGS. 2 to 4.
and a cutter 66 are provided.

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 provided in parallel along the front-rear direction on the table portion 37, and between the sprockets 41, pallets are 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 from the pallet 21.

As shown in FIGS. 14 and 15, this pallet separating device 25 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. Further, an opening 52 for inserting the separating device 25 is formed in the table portion 37 of the table lifter 27, as shown in FIG.

The fixed head 49 has three fixed head parts 49A and 498.49G 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 49G,
50A-C have rubber pads 53 attached to their surfaces.

Each head portion 49A, 49B of the fixed head 49.

49C and each head portion 50A of the side head 50.

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

It is now possible for 50C 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 49G 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, head parts 49A-C from a position higher than the height of each head part 49Δ-G, 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 on one 54A runs out, the other 548 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 loading/unloading conveyors 3, 4 before and after it. in this case,
Head parts 49A-C, 50A- 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 49G.
When the head parts 50A, 50B, and 50C of 0 are raised, and in this state, 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, the pallet is lifted. 21 descends together with the chain conveyor 26, but the object 2 to be packed is supported by each head section 49A-C, 50A-C of the pallet separation device 25, and the pallet 21 and the object 2 to be packed are separated. .

Next, the guide roller 17 of each protection frame 7 of the protection frame unit 8
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
When the turntable 1 is rotated by the #J device 52 while the film 18 is gripped by the chuck device 6o provided on the protection frame 7b from 9, the object to be packed 2' is transferred to the pallet separating device 25.
At the same time, the protective frame unit 8 is rotated in synchronization with the turntable 1, and the protective frame unit 8 is wrapped in a film as explained in FIG.

In this case, the supply amount of the film 18 is controlled by the vinyl roller 56 of the film supplying 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 60 is released, and each protection frame 7 is attached to 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 device 25 onto the pallet 21. When the film-wrapped object 2 is transferred to the carry-out conveyor 4 together with the pallet 21, the cutter 66 provided on the protection frame 7b cuts the end of the film 18, and the chuck device 60 cuts the start end of the film 18. grasp. In this way, a new object 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.

[Effects of the Invention] As is clear from the detailed description above, 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.

(2) 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 packaged item, resulting in damage to the film at the corner. It is possible to wrap the film evenly over the entire surface without any problems.

(3) By providing a chuck device for gripping the film on the protective frame, the object to be packed can be wrapped in film by rotating it as it is, and automation of film packaging can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the film chucking device shown in FIG. The front view of the separated state, Fig. 4 is the IV- of Fig. 2.
Figure 5 for rV line sectional view Figure 6, Figure 7, Figure 8, Figure 9
Figures 11 and 10 are process diagrams showing the operation of the film chuck device for film packaging in the present invention, and Figure 11.
12 is a plan view of FIG. 11, FIG. 13 is a front view of FIG. 11, and FIG.
4 is a view taken along the line A-A in FIG. 13, FIG. 15 is a detailed perspective view of the pallet separating device in FIG. 11, FIG. 16 is a view taken along the line B-B in FIG. 13, and FIG. is a detailed perspective view of the object to be packed and the pallet in FIG. 11, FIGS. 18 to 21 are diagrams explaining the invention of the earlier application, and FIGS. 18 and 19 show the process of wrapping the object in film. FIG. 20 is a plan view of the object to be packaged after film wrapping, and FIG. 21 is a schematic perspective view showing the state of film wrapping. 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 60 is a It is a chuck device. Patent Applicant: Ishikawajima-Harima Heavy Industries Co., Ltd. Nippon Sheet Glass Co., Ltd. Ryo Matsumoto Katsutoshi Tamaishi Maru Representative Patent Attorney Nobuo Kinutani 1 Turntable 7 Protective frame Figure 1 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure l5 Figure 11

Claims (1)

[Claims] A vertical protective frame is placed at the corner of an object to be packed that has a polygonal horizontal cross section, and the film is wrapped around the outer circumference of the object several times while applying tension to the film together with the protective frame.
In a film packaging device that moves a protective frame from a corner to the center of a side of an object to be packaged and pulls the protective frame upward from the film to wrap the object in film, the end of the winding start of the film is placed on the protective frame. A film packaging device characterized by being provided with a chuck device for gripping.