JPS63218012A - 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 packaged 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, when the object to be packaged has sharp corners, such as a laminate of plate glass or a laminate of iron plates, when the film starts to be wrapped under tension, A problem arises in that the film is t7JKed at the corner.

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. 9 to 12.
As shown in the figure, the rod-like body C is placed at the corner of the object to be packed a, and in this state, the film e is unwound from the film roll d, and the rod-like body C is placed along with the rod-like body C in the direction of the arrow shown in the figure. While applying tension to the film e by rotating it
Wrap around.

FIG. 9 shows the Iζ state after winding, in which the film 0 is held by the rod C while maintaining tension. Next, from the state shown in Figure 9, move the rod C from the corner to the center of the sword as shown in Figure 10, and pull up the rod C as shown by the two-dot chain line in Figure 12. By pulling out the film e and the object to be packed a, the wrapped film e will tightly adhere to the outer periphery of the object to be packed a as shown in FIG. 11 due to its tension.
The object to be packaged a will be wrapped in 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 a corner, 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 problem 1] In order to achieve the above object, the present invention arranges a vertical protective 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. A film packaging device for wrapping a packaged item with a film includes a turntable that rotates with the packaged item placed thereon, a packaged item transfer means provided on the turntable, and a means for moving up and down the packaged item above the packaged item. The protective frame unit supports the protective frame so that it can move forward and backward and rotates in synchronization with the turntable, and the film is supplied while applying tension to the outer periphery of the packaged object whose corners are covered by the protective frame. The device is equipped with a film supply means that positions the protective frame at the corner of the object to be packed, rotates the turntable and protection frame unit in synchronization, and wraps the film around the object to be packed. This prevents direct contact with the corners of the packaged items, and then moves and removes the protective frame, allowing the laminated film to adhere tightly to the packaged items using its tension, allowing the film to be wrapped. In addition, the objects to be packaged on the turntable are moved by a transfer means so that they can be sequentially and efficiently wrapped in film.

[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.

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 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.

Next, the operation of this embodiment will be explained.

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 left and right width of the object to be packed 2, and at the same time, the movable body 13 is moved to match the front and back width of the object to be packed 2, and the guide of the protection frame 7 is moved. The roller 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 pulled out from between the film 18 and the object to be packed 2, the film 18 is pulled around the outer periphery of the object to be packed 2 due to its tension! 5, and then wrap the object 2 in 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.

2 to 8 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, as shown in FIG. 8, the object to be packed 2 is made up of a number of laminated glass plates 20, and is placed on a pallet 21 to be transported.

The pallet 21 consists of a frame 22 in the shape of an NWA mesh, and has holes 23 for handling to separate and lift the object 2 to be packed from the pallet 21, as described later, and to prevent the object 2 to be packed from shifting. Rubber bats 24 for shock absorption are provided at appropriate locations on the frame 22.

Now, FIGS. 2 to 4 show the entire film packaging apparatus for packaged objects 2 made of plate glass 20, with FIG. 2 being an overall perspective view, FIG. 3 being a plan view, and FIG. 4 being a front view.

This example is basically the same as the embodiment shown in FIG.
The difference is that a pallet separating device 25 is provided to separate the packaged items 2 and 2, that the transfer means 5 is made up of a chain conveyor 26 and is raised and lowered by a table lifter 27, and that the structure of the film supply means 19 is different.

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 the 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 @32 includes the support arm 10 of the protection frame unit 8.
1. : The provided driven gear 34 is spline-engaged, and the base frame 11 is rotated in synchronization with the turntable 1 from the driven gear 34 via a timing belt 35. Further, a lifting device 36 such as a hydraulic cylinder for raising and lowering the protective frame unit 8 is provided within the support 9.

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.

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

As shown in FIGS. 5 and 7, the transfer means 5 includes a support plate 40 provided in parallel along the front-rear direction on the table portion 37.
Sprockets 41 are provided before and after the pallet 21, and between the sprockets 41, an attachment (
It consists of a chain conveyor 26 in which a chain 42 with a
1 are connected by a shaft 43, and the shaft 43 is rotationally driven by an electric motor 44 and a transmission gear 45. Further, a guide rail 46 is provided on the support plate 40 between the front and rear sprockets 41 to support the chain 42.

A pallet separation device 25 is provided between the chain conveyors 26 for holding the objects 2 through the holes 23 of the barres 21 and separating the objects 2 and the pallet 21 from each other.

As shown in FIGS. 5 and 6, 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 5
0 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, 498, 490 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 to 50C have a rubber pad 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 50C are arranged so as to correspond to each hole 23 of the pallet 21 as shown in FIG.
through the head parts 49A, 49B, 4 on the pallet 21.
9C, 50A, and 508°500 can appear.

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

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

49B, 49C can protrude, and the maximum height of each head portion 50A, 508, 50G of the side head 50 is at the same level as each head portion 49A, 49B, 49G of the fixed head 49.

Furthermore, the chain conveyor 26 is connected to the table lifter 2.
7, head portions 49A-C from a position higher than the height of each head portion 49Δ-C150Δ-C.

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

As shown in FIGS. 2 and 3, the film supply means 19 includes two film supply rolls 54A and 54B, an idle roller 55 for guiding the film 18, and a pinch roller 56 for applying tension to the film 18. , a tension roller 57 for guiding the packaged object 2 while applying tension, and a cutter 58 for cutting the film 18 at the end of rough 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 54A runs out, the end of the film 18 is replaced with the other 54B. 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. 2 to 8 will be explained.

First, the height of the chain conveyor 26, which is the transfer means 5, is lowered by a table lifter 27 so that it is at the same level as the conveyors 3 and 4 for loading and unloading 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.

498. Side head 5 to be at the same level as 490.
In this state, the three lifting cylinders of the table lifter 27 (Fig. 5) are driven to lower the table part 37, and the chain conveyor 26 is lowered. The pallet 21 descends together with the chain conveyor 26, but the object 2 to be packed is supported by each head section 49△-G, 50A-C of the pallet separation device 25, and the pallet 21 and the object 2 to be packed are separated. It happens.

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 film 18 is gripped by a gripping device (not shown) provided on the table portion 37 or the protection frame 7 from 9 and the turntable 1 is rotated by the drive device 29, the object to be packed 2 is rotated via the pallet separating device 25. protection frame unit 8 at the same time.
is rotated in synchronization with the turntable 1, and is wrapped in film as explained in FIG.

In this case, the supply G 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.

Once the film 18 has been wound and numbered a predetermined number of times, the cutter 58 cuts off the edges of the film, and then the protective frame 7 is moved from the corner 6 to the center, and the protective frame unit 8 is raised to remove the protective frame. 7 and complete the film packaging.

After completion, the table lifter 27 is raised to raise the chain conveyor 26 with the pallet 21 still on it,
The objects 2 to be packaged are transferred from the pallet separation device 25 onto the pallet 21, and then the chain conveyor 26 is driven to remove the objects 2 wrapped in film together with the pallet 21.
is transferred to the conveyor 4 for carrying out, and a new object 2 to be packed is again wrapped in film as described above.

In the film packaging shown in FIGS. 2 to 8, 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.

(b) After wrapping the film, by moving the protective frame from the corner and pulling it out, the tension of the entire film tightens the outer periphery of the packaged item. The entire surface can be evenly wrapped in film without being damaged.

(3) The object to be packed is placed on a turntable, the turntable and the protective frame unit that supports the protection frame are rotated in synchronization to wrap the object in film, and the object to be packed is moved by a moving means after wrapping, thereby wrapping the object in film. automation can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing one embodiment of the present invention, FIG. 2 is an overall perspective view showing another embodiment of the invention, FIG. 3 is a plan view of FIG. 2, and FIG. 4 is a second embodiment of the invention. 5 is a view taken along the line v-v in FIG. 4, FIG. 6 is a detailed perspective view of the pallet separation device in FIG. 2, and FIG. 7 is a view taken along the line Vl-VI in FIG. 4. Fig. 8 is a detailed perspective view of the object to be packed and the pallet in Fig. 2, Figs. FIG. 11 is a plan view showing the film wrapping process, FIG. 11 is a plan view of the object to be packaged after film wrapping, and FIG. 12 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, and 19 is a film supply means. Patent applicant Ryo Matsumoto Ishikawajima Ban S Heavy Industries Co., Ltd. Nippon Sheet Glass Co., Ltd. Katsutoshi Maru Tamaishi Representative patent attorney Nobuo Kinuya 1 Turntable 7 Protective frame 2 Object to be packaged 8 Protective frame unit 5 Packaged object transfer means 18 Film hexagonal part
19 Film supply means Fig. 1 ii'd Fig. 2 Fig. 5 Fig. 6 Fig. 9 Fig. 10 Fig. 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.
A turntable on which an object to be packed is placed and rotates in a film packaging device that moves a protective frame from a corner to the center side of the side of an object to be packed and pulls the protective frame upward from the film to wrap the object in film. , a means for transporting objects to be packed provided on the turntable, and a protection frame that is provided above the objects to be packed so as to be able to rise and fall freely, supports the protection frame so as to be movable back and forth, left and right, and rotates in synchronization with the turntable. 1. A film packaging device comprising: a unit; and a film supply means for supplying the film while applying tension to the outer periphery of an object to be packaged whose corners are covered with a protective frame.