JPH0446813B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a packaging material cutting and removing device, and more particularly to a packaging material cutting and removing device that cuts and removes packaging material from a cylindrical package.

[Conventional technology]

In general, can lids for food cans and other food cans filled with food products such as beer and soft drinks are piled up in a cylindrical shape during the can manufacturing process, wrapped in wrapping paper, and then sent to the canning process.

In the canning process, the wrapping paper is removed from the wrapped can lids, the contents are filled, and the lids are supplied one by one to the can body in the seaming process, where they are placed over the mouth of the can body and seamed. will be held.

However, there is a device described in Japanese Patent Application Laid-open No. 1983-41030 for removing wrapping paper from a package in which a cylindrical content such as a can lid is wrapped in wrapping paper, as described above.
As shown in FIG. 14, this device receives a package 43 with a pair of lower rollers 41 and 42, and by rotation of the lower rollers 41 and 42, a bag-shaped slack part is formed in the wrapping paper 44, and this slack part The wrapping paper 44 is cut in the longitudinal direction with a cutter 45 (FIG. 14a), and then the wrapping paper 44 is rolled up and removed upward by the rotation of a pair of upper rollers 47 and 48 (FIG. 14b).

In addition, as another wrapping paper removal device,
There is a device described in Japanese Patent No. 41498, in which, as shown in FIG. 15, the wrapping paper 54 is gripped by grippers 51 and 52 (FIG. 15a), and in this state, the package 53 is lifted up and cut into the cutter 55. is driven to cut the wrapping paper 54 (FIG. 15b). and,
The grippers 51 and 52 are opened to receive the package 53 in the lift gutter 56 (FIG. 15c), and then the package 53 is
is fed onto the pair of rolls 57, 58, and the pair of rolls 57, 58 are reversed to wind the wrapping paper 54 between the rolls 57, 58, thereby completing the cutting and removal work of the wrapping paper 54 (Fig. 15). d).

Furthermore, as another packaging material removal device,
There is a device described in No. 19541. This is also the same as the above-mentioned Tokko Akira.
This device is exactly the same as the device described in No. 56-41498.

As a packaging material removing device for removing wrapping paper from a planar package, there is a device described in Japanese Utility Model Application Publication No. 43508/1983. This device suctions the wrapping paper with a circular pad connected to a vacuum source, inserts a knife inserted into the pad into the wrapping paper, and cuts the wrapping paper by changing the relative position of the package and the knife. It is to be removed.

[Problem to be solved by the invention]

However, in the above-mentioned devices, the wrapping paper is loosened, cut, and peeled off while the packaging is stopped, so the wrapping paper is continuously removed from a large number of packaging. When removing the package, the next package to be peeled off must be kept waiting for a long time, so there is a problem that the capacity cannot be increased beyond a certain level.

Furthermore, in the device described in JP-A No. 58-41030, since slack is formed on the lower side of the package due to friction with the roller, there is no certainty in adjusting the slack, and as a result, There is a problem in that it may not be possible to make an incision due to the stubble. Moreover, even if the wrapping paper is not loose enough, the cutter must be close to the package in order to cut it open, so there is the problem that the cutter may come into direct contact with the contents and damage the contents or the cutter. be.

On the other hand, Special Publication No. 56-41498 and Special Publication No. 58-
The device described in Publication No. 19541 has a structure in which the entire package is lifted and the cutter is inserted before cutting the wrapping paper, so there is a problem in that the entire package must be lifted horizontally. are doing. Moreover, the gripper must be provided with a lift device, which complicates the overall structure of the device and increases the cost of the device. Further, like the above-mentioned device, since the cutter is close to the contents during cutting, there is a problem that the cutter may come into direct contact with the contents and damage the contents or the cutter.

Furthermore, the device described in Japanese Utility Model Application Publication No. 60-43508 is
In order to insert the knife into the wrapping paper, the relative position between the knife and the circular pad must be changed, and a complicated device such as a suction cylinder is required.

The present invention was created in view of the above circumstances, and
The purpose of this is to cut and remove the wrapping paper from the package in a simple way without stopping the package, without damaging the contents of the package or the cutter, and without going through the process of lifting the package. Our goal is to provide construction equipment.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides an apparatus for cutting and removing packaging material from a columnar packaging body covered with a sheet-like packaging material, in which the top surface of the packaging body is sucked to loosen the packaging material. a suction opening of a vacuum duct connected to a vacuum source forming a bag-like slack portion extending in the longitudinal direction of the packaging body; A cutter for cutting the slack portion, a moving device for relatively moving the package and the cutter along the longitudinal direction of the package, and a packaging material removal device for removing the cut packaging material from the package. It is characterized by having the following.

[Effect]

According to the above-mentioned means, the sheet-like packaging material on the outer surface of the packaging body is suctioned and loosened by the suction opening of the vacuum duct connected to the vacuum source, and the packaging material is A bag-shaped slack portion extending in the direction is formed. Then, while the packaging body or the cutter is moved by the moving device and the packaging body is moved relative to the cutter, the packaging material is continuously cut by the cutter, and the cut packaging material is It is removed from the package by a packaging material removal device.

〔Example〕

Embodiments of the packaging material incision and removal device according to the present invention will be described below with reference to FIGS. 1 to 15.

FIGS. 1 and 2 are diagrams showing the basic principle of the present invention, in which the package 1 is moved along the longitudinal direction of the package as shown by arrow A, This packaging body 1 has a cylindrical shape with a predetermined length, and its outer surface is covered with a sheet-like packaging material 2. On the moving path of the package 1,
A suction opening 3o of a vacuum duct 3 connected to a vacuum pump is disposed adjacent to the top surface of the package 1, and the packaging material 2 wrapped around the outer surface of the package 1 is moved upward by the vacuum. It is designed to attract. A disc-shaped cutter 4 is disposed in the vicinity of the suction opening 3o.

In the above configuration, when the package 1 is moved in the direction of arrow A and reaches above the suction opening 3o, the packaging material 2 wrapped around the outer surface of the package 1 is
As shown in the figure, a pulling force acts in the direction of arrow B to loosen the packaging material 2, and the packaging material 1
A bag-shaped slack portion 2a is formed on the upper surface of the holder.

As the package 1 moves, a bag-shaped slack portion 2a extending in the longitudinal direction of the package 1 is continuously formed in the package 2. Therefore, as shown in FIG. 2, by rotationally driving the cutter 4 located slightly above the bag-shaped slack portion 2a of the package 1, the packaging material 2 is moved in the axial direction while moving the package 1. can be incised.

Next, an embodiment of the packaging material incision and removal device based on the basic principle as described above will be described with reference to FIGS. 3 to 15.

FIG. 3 is a side view of the packaging material cutting and removal device M. On the frame 10 of the device M, there is a pusher 11 constituting the packaging body moving device on the rear side 10R.
are arranged, a suction opening 3o of the vacuum duct 3 and a cutter 4 are arranged in the central part 10C, and a packaging material removing device 25 for peeling off the cut packaging material 2 from the package 1 is arranged in the front side 10F. has been done. In FIG. 3, the frame 10 is tilted in relation to the next process, but it may of course be horizontal. and,
The package 1 is located on the rear side 10R (upstream side) of the frame 10.
It is set to move further to the front side 10F (downstream side). Also, on the frame 10, a fourth
As shown in the figure, a pair of guide members 14 and 15 are arranged along the longitudinal direction of the frame.
The guide members 14 and 15 allow the package 1 to be supported and guided from both sides during movement.

As shown in FIGS. 5 to 7, the pusher 11 is connected to a moving rod 12a of an air cylinder 12, and is fitted into a guide rod 13 disposed along the longitudinal direction of the frame. It is designed to be moved back and forth by the operation of the air cylinder 12. Then, the push rod 11a on the upper part of the pusher 11 pushes the rear end of the package 1 placed on the guide members 14 and 15 when moving forward, thereby moving the package 1 forward.

On the other hand, the suction opening 3o of the vacuum duct 3 and the cutter 4 are arranged slightly above the guide members 14 and 15, as shown in FIGS. 8 to 10.
These vacuum ducts 3 and cutters 4 are connected to the frame 10
It is designed to be supported by a support member 16 that is erected. That is, a vacuum duct 3 is fixed to the support member 16, and the lower end of the vacuum duct 3 is open to form a suction opening 3o.A motor 19 is fixedly supported to the support member 16, and the rotation axis of the motor 19 is A support shaft 5 supporting a cutter 4 having a saw blade 4a on its outer periphery is fixed to the support shaft 19a. The cutter 4 is disposed in the vicinity of the suction opening 3o.

A guide portion 3a is formed at the lower end of the suction opening 3o, which is bent from the suction opening so as to slide and guide both sides of the package 1.

On the other hand, the packaging material removing device 25 disposed slightly downstream of the cutter 4 includes a pair of stripping rollers 26 disposed so that their outer peripheral surfaces touch each other, as shown in FIGS. 11 and 12. , 27, and the packaging material 2 cut by the cutter 4 is placed on these rollers 26, 27, which rotate in opposite directions, and is stripped off there. In addition, the stripping roller 2
Above the stripping rollers 26, 27,
A pressing roller 28 is provided to press down on the upper surface of the upper package 1 to prevent peeling errors. A rotating shaft 29 that rotatably supports the presser roller 28 is a swing arm 3.
0, and this swinging arm 30
A pivot end 30a is supported by a side plate 31 that stands up from the main body frame 10. The swinging arm 30 is connected to an operating rod 32a of a thin cylinder 32, and as the operating rod 32a extends and retreats, the swinging arm 30 can swing in the direction of the arrow with the pivot end 30a as a fulcrum. .

Next, the operation of the packaging material incision and removal device according to the present invention constructed as described above will be explained with reference to FIG. 13.

The package 1 is fed onto guide members 14 and 15 of the packaging material cutting and removing device M from the direction of arrow D in FIG. Then, the air cylinder 12 is actuated to move the pusher 11 forward, and as shown in FIG. 13a, the rear end of the package 1 is pushed by the push rod 11a, and the package 1 is moved in the direction of the arrow. When the front end of the package 1 is fed to the position of the suction opening 3o, as shown in FIG. 13b, the package 1 has the following properties:
The suction force from the vacuum pump acts upward to loosen the packaging material 2 wrapped around the outer surface of the package 1, and a bag-shaped slack portion 2a is formed on the top surface of the package 1. As the package 1 moves downstream, a bag-shaped slack portion 2a extending in the longitudinal direction of the package 1 is continuously formed in the package 2. At this time, the bag-shaped slack portion 2a is continuously cut in the longitudinal direction by the cutter 4, as shown in FIG. 13c.

Even after the above-described cutting operation is completed, the package 1 continues to be pushed downstream by the pusher 11 and is fed onto a pair of stripping rollers 26 and 27 that constitute the packaging material removal device 25. and,
When the entire package 1 is placed on the peeling rollers 26, 27, the swinging arm 30, which was in the upwardly escaped state, swings downwards due to the operation of the thin cylinder 32, and as shown in FIG. As shown in , the presser roller 28 presses the top surface of the package 1, and in this state, the stripping rollers 26 and 27 rotate to start stripping the packaging material 2. , 27 and the packaging material 2 due to the entrainment action caused by the frictional force generated between the packaging material 2 and the packaging material 2. Incidentally, chips and the like generated when the packaging material 2 is cut open are removed by vacuum suction through the suction opening 3o.

〔Effect of the invention〕

As is clear from the description of the embodiments, according to the present invention, the cutting process, which is the process that requires the most time, can be performed in one step at the same time as loosening the package while the package is in a moving state. Even if the incised packaging material is removed in a stopped state in the next process, the required time is independent of the stopping time, and the process of incising and removing the packaging material can be made more efficient, and the apparatus capacity can be improved.

Further, according to the present invention, the packaging material is loosened by the suction force from the suction opening of the vacuum duct connected to the vacuum source, and the packaging material is cut by the rotating cutter located above the suction opening. Therefore, there is no need for the complicated process of changing the relative position of the suction duct and the rotating cutter, and there is no risk of the cutter coming into contact with the contents of the package. No damage to the contents of the package or the cutter.

Further, according to the present invention, since the packaging material can be cut and removed from the package without going through the process of lifting the package, there is no need to provide a lift device for the package, and the overall structure of the device is simplified.

[Brief explanation of the drawing]

1 and 2 are diagrams explaining the basic principle of the packaging material incision and removal device according to the present invention, in which FIG. 1 is a front sectional view, FIG. 2 is a sectional view, and FIG. A front view showing an embodiment of the packaging material incision and removal device;
FIG. 4 is a view in the direction of the arrow in FIG. 3, and FIGS. 5 to 7 are views showing the package moving device of the packaging material incision and removal device, FIG. 5 is a plan view, and FIG. 6 is a sectional view. , 7th
The figure is a side view, Figures 8 to 10 are views showing the suction opening and cutter of the packaging material incision and removal device, Figure 8 is a front view, and Figure 9 is a view taken along the - line in Figure 8. 10 is a front sectional view, FIGS. 11 and 12 are views showing the packaging material removal device of the same packaging material cutting and removal device, FIG. 11 is a front view, and FIG. 12 is a front sectional view. A side view, FIG. 13 is an explanatory diagram of the operation of the packaging material incision and removal device, and FIGS. 14 and 15.
Each figure is an explanatory diagram of a conventional packaging material cutting and removing device. 1...Packaging body, 2...Packaging material, 3...Vacuum duct, 3o...Suction opening, 4...Cut, 10...
... Frame, 11 ... Pusher, 12 ... Air cylinder, 13 ... Guide rod, 14, 15 ... Guide member, 16 ... Support member, 19 ... Motor, 2
5... Packaging material removing device, 26, 27... Stripping roller, 28... Pressing roller, 30... Swinging arm, 32... Thin cylinder.

Claims (1)

[Claims] 1. In a device for cutting and removing packaging material from a columnar packaging body covered with a sheet-like packaging material, a bag extending in the longitudinal direction of the packaging body for suctioning the top surface of the packaging body to loosen the packaging material. a suction opening of a vacuum duct connected to a vacuum source that forms a slack portion of the shape; a rotary cutter provided in the vicinity of the suction opening of the vacuum duct for cutting the slack portion formed in the packaging material; It is characterized by comprising a moving device that relatively moves the packaging body and the rotary cutter along the longitudinal direction of the packaging body, and a packaging material removal device that removes the cut packaging material from the packaging body. packaging material incision and removal device.