JPH01199837A - Packaging material incision and removal device - Google Patents

Abstract

PURPOSE:To cut and remove packaging paper from a package without a lift process by a method wherein a pair of rotating rollers are provided tiltably so that the upper side of a rotation axis is positioned at an upstream position of the lower side with respect to a direction of package transportation. CONSTITUTION:A pair of rotating rollers 3, 4 which are provided so that their circumferences are in contact with each other on a transfer path of a package 1 are provided at a specified angle to permit the rotation axes 3a, 4a to be parallel to each other and the upper side is at an upstream position of the lower side with respect to a direction of transporting the package 1. In this constitution, when the package 1 is transported and comes into contact and rolled with the rotating rollers 3,4, tension functions to make a sag on a packaging material 2 and a sagging portion 2a shaped like a bag is formed on the upper surface of the package 1. Then since a bag-shaped sagging portion 2a is formed continuously on the packaging material 2 as the package 1 is transported, the packaging material 2 can be cut in the direction of the axis during package 1 transportation by placing a cutter K slightly above the contact portion of the rotating rollers 3, 4 and the package 1.

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.

Therefore, in order to remove the wrapping paper from a package in which cylindrical contents such as can lids are wrapped in wrapping paper, there is a method disclosed in Japanese Patent Application Laid-Open No. 58
There is an apparatus described in Japanese Patent No. 41030, which receives a package 43 with a pair of lower rollers 41 and 42 as shown in FIG. A shaped slack portion is formed, and this slack portion is cut in the longitudinal direction with a cutter 45 (Fig. 16(a)).
Next, the wrapping paper 44 is rolled up and removed upward by the rotation of a pair of dirt rollers 47 and 48 (see Fig. 16).
b)).

In addition, as another wrapping paper removing device,
There is a device described in Japanese Patent No. 8, in which grippers 51 and 52 grip the wrapping paper 54 as shown in FIG. 55 is driven to cut open the wrapping paper 54 (FIG. 17(b)).

Then, the grippers 51 and 52 are opened to receive the package 53 in the lift gutter 56 (FIG. 17(c)), and then the package 53 is
is fed onto a pair of rolls 57.58, and the pair of rolls 57.58 are reversely rotated to transfer the wrapping paper 54 to rolls 57.58.
17(d)).

[Problem to be solved by the invention]

However, in both of the above-mentioned apparatuses, the wrapping paper is loosened, cut, and peeled off while the packaging body is stopped. When removing the paper, the packaging body to be peeled off next must be left 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 Japanese Patent Application Laid-Open No. 58-41030, slack is formed at the bottom of the package due to friction with the rollers, so there is no certainty in adjusting the slack, and as a result, There is a problem in that the cutter may not be able to make the cut. Moreover, the cutter must be close to the package in order to cut it open even when the wrapping paper is loose and loose, 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, the device described in Japanese Patent Publication No. 56-41498 adopts a structure in which the entire package is lifted up and the cutter is inserted before cutting the wrapping paper, so the entire package must be lifted horizontally. The problem is that it does not. Moreover, the gripper must be provided with a lift device, which complicates the structure of the entire 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. ' The present invention was devised in view of the above-mentioned circumstances, and its purpose is to eliminate the lifting process of the package without stopping the package or damaging the contents of the package or the cutter. To provide a device with a simple structure capable of cutting and removing wrapping paper from a package without going through the process.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides a package moving device for moving the package along its longitudinal direction in an apparatus for cutting and removing the packaging material from a columnar package covered with a sheet-like packaging material. a pair of rotating rollers that contact and engage with the top surface of the moving packaging material to loosen the packaging material and form a bag-shaped slack portion extending in the longitudinal direction of the packaging material; The above-mentioned pair of cutters are provided with a cutter disposed at a position slightly above the contact scratch table portion for cutting a slack portion formed in the packaging material, and a packaging material removal device for removing the cut packaging material from the packaging body. The rotating roller is characterized in that the upper side of the rotating shaft is inclined and arranged so that the upper side of the rotating shaft is located upstream with respect to the moving direction of the package than the lower side.

[Effect]

According to the above-mentioned means, the columnar package covered with the sheet-like packaging material comes into contact with a pair of rotating rollers disposed at an angle while being moved in the longitudinal direction by the package moving device. When engaged, the packaging material on the outer surface of the package is loosened diagonally upward by a rotating roller, forming a bag-shaped slack portion extending in the longitudinal direction of the package. The packaging material is successively incised, and the packaging material that has been incised is removed from the packaging body by a packaging material removal device.

〔Example〕

Hereinafter, a first embodiment of the packaging material incision and removal device according to the present invention will be described.
This will be explained with reference to FIGS. 15 to 15.

1 to 3 are diagrams showing the basic principle of the present invention, in which the package 1 moves 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. A pair of rotating rollers 3 and 4 made of elastic members are disposed on the moving path of the package 1 so that their outer peripheral surfaces touch each other, and are capable of contacting and engaging with the top surface of the moving package 1. It has become.

The pair of rotating rollers 3 and 4 have their rotating shafts 3a and 4a parallel to each other, and the upper sides of the rotating shafts 3a and 4a are upstream from the lower side with respect to the moving direction of the package 1 (direction of arrow A). At a predetermined angle from the vertical direction (
θ).

In the above configuration, when the package 1 is moved in the direction of the arrow A and comes into contact engagement with the rotating roller 3.4, the packaging material 2 wrapped around the outer surface of the package 1 has the shape shown in FIG. The tension is applied in the direction of arrow B, and the slack is tightened.
A bag-shaped slack portion 2a is formed on the top surface of the package 1. This is because the rotating roller 3.4 is inclined toward the upstream side with respect to the moving direction of the packaging material 1, so that a force that pulls the packaging material 2 up diagonally upward as shown by the arrow C in FIG. 1 acts on the packaging material 2. It's for a reason. Then, due to the movement of the packaging body 1, the packaging material 2
A bag-shaped slack portion 2a extending in the longitudinal direction of the package 1 is continuously formed. Therefore, as shown in FIG. If the cutter K is placed at a position slightly above the joint, the packaging material 2 can be cut in the axial direction while the packaging body 1 is being moved, and this state is shown in FIG. The cutter may be a rotary blade provided integrally with the rotary rollers 3 and 4, or may be a separate cutter as shown in FIG.

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. 5 to 15.

FIG. 5 is a side view of the packaging material cutting and removal device M. On the frame 10 of the device M, a button 11 constituting a packaging body moving device is arranged on the rear side 10R, and a central portion 10
Rotating rollers 3 and 4 are disposed at C, and a packaging material removing device 25 for peeling off the cut packaging material 2 from the packaging body 1 is disposed at the front side 10F. In addition, in Fig. 5, frame 1
0 is inclined in relation to the next culm, but of course it may be horizontal as well, and the package 1 is placed on the rear side 10R of the frame 10 (
It is set to move from the front rpJIOF (upstream side) to the front rpJIOF (downstream side). Also, on the frame 10, the sixth
As shown in the figure, a pair of guide members 14.15 are arranged along the longitudinal direction of the frame, and the guide members 14.15 allow the package 1 to be supported and guided from both sides during movement. ing.

The bushing 11 is connected to a moving rod 12a of the air cylinder 12, as shown in FIGS. 7 to 9, and is connected to a guide rod 13 disposed along the longitudinal direction of the frame.
It is fitted in and is moved back and forth by the operation of the air cylinder 12. When the push rod 11a at the top of the bushing 11 moves forward, the guide member 14.1
The rear end of the package 1 placed on the package 1 is pushed, and the package 1 is moved forward.

On the other hand, the rotating rollers 3 and 4 are arranged slightly above the guide member 14 and 15, as shown in FIGS. It is supported by a construction member 18 that spans between 16 and 17. That is, the construction member 18
A bearing 18a is provided on the bearing 18a, and a support side plate 19 having a cross-sectional shape is swingably suspended from the bearing 18a, and a pair of rotating rollers 3 and 4 are rotatably supported on the support side plate 19.

The rotating rollers 3.4 have their rotating shafts 3a.

4a are parallel to each other, and are inclined at a predetermined angle (θ) from the vertical direction so that the upper sides of the rotating shafts 3a, 4a are located upstream from the lower sides with respect to the moving direction of the package 1. , and this inclination angle θ can be varied by retracting the operating rod 20a of the thin cylinder 20 fixed to the construction member 18 and swinging the support side plate 19.

Further, a round belt 23 having a cylindrical cross section is wound between the rotating roller 3.4 and a drive pulley 22 directly connected to a drive motor 21 provided on the support side plate 19. Due to the frictional engagement with the rotating rollers 3.4, the rotating rollers 3, 4 are rotationally driven in the direction of the arrow. A pair of rotary blades 5.6 are integrally formed on the outer peripheral surfaces of the rotary rollers 3 and 4, and scissor-shaped cutters for cutting the packaging material 2 are formed by the pair of rotary blades 5.6. configured. Also,
A pair of regulating members 24R and 24F are disposed on the upstream and downstream sides of the rotating roller 3.4 to press down on the top surface of the package 1 and prevent the package 1 from being lifted.

On the other hand, the packaging material removing device 25 disposed slightly downstream of the rotating roller 3.4 has a pair of stripping material removal devices disposed so that their outer peripheral surfaces are in contact with each other, as shown in FIGS. 13 and 14. The packaging material 2 cut by the rotary blade 5.6 is made up of rollers 26 and 27 which rotate in opposite directions.
7 and is stripped and removed here. Further, above the stripping rollers 26 and 27, a stripping roller 2
6. A press roller 28 is provided to press down on the upper surface of the package 1 above 27 and prevent peeling errors.

A rotating shaft 29 that rotatably supports the presser roller 28 is supported by a swinging arm 30, and this swinging arm 30 has a pivot end 30a on a side plate 31 that stands up from the main body frame 10.
is supported. The swing arm 30 is connected to an operating rod 32a of a thin cylinder 32, and the swing arm 30 is connected to an operating rod 32a of a thin cylinder 32.
Due to the withdrawal of a, the swinging arm 30 moves to the pivot end 30 in the direction of the arrow.
It is possible to swing around a 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. 15.

The package 1 is fed onto the guide member 14,15 of the package cutting and removal device M from the direction of the arrow in FIG. Then,
The air cylinder 12 operates and the bushing 11 moves forward,
As shown in FIG. 15 (a), the rear end of the package 1 is pushed by the push rod 11a and the package 1 moves in the direction of the arrow.The front end of the package 1 is at the position of the rotating roller 3.4. When the packaging body 1 is fed up to this point, as shown in FIG. 15(b), the packaging body 1 is brought into contact engagement with the rotating rollers 3 and 4 while being prevented from lifting upward by the regulating members 24R and 25F.
The packaging material 2 wrapped around the outer surface of the package 1 is loosened diagonally upward, and a bag-shaped slack portion 2a is formed on the top surface of the package 1.
is formed. As the packaging body 1 moves downstream, bag-shaped slack portions 2a extending in the longitudinal direction of the packaging body 1 are continuously formed in the packaging material 2. At this time, bag-shaped slack portions 2a As shown in FIG. 15(c), the blade 5.6 is sandwiched and incised by a rotary blade 5.6 formed integrally with the rotary roller 3.4, and a portion of the packaging material at the tip of the package 1 is slightly incised. Some parts remain uncut, but other parts are continuously incised in the longitudinal direction.

Even after the above-mentioned cutting operation is completed, the package 1 continues to be pushed downstream by the bushing 11, and the pair of peeling rollers 26.2 forming the packaging material removal device 25.
7 is sent on top. When the entire package 1 is placed on the peeling rollers 26, 27, the thin cylinder 3
Swing arm 3 which had escaped upward due to the operation of 2.
0 swings downward, and the presser roller 28 presses the top surface of the package 1 as shown in FIG. Pick-up work begins. At this time, the uncut portion of the packaging material 2 is torn by the rolling action caused by the frictional force generated between the peeling rollers 26 and 27 and the packaging material 2, and the packaging material 2 is completely removed from the packaging body 1. .

〔Effect of the invention〕

As is clear from the description of the embodiments above, according to the present invention, the packaging material can be loosened and cut at the same time in one step while the package is in a moving state. By simply removing the wrapped packaging material, the downtime of the packaging can be shortened, and the process of cutting and removing the packaging material can be made more efficient.
Equipment capacity can be improved.

Further, according to the present invention, a slack portion is formed by the contact engagement between the pair of rotating rollers and the packaging body, and the packaging material is cut by the cutter located above the contact engagement portion. There is no possibility that the cutter and the contents of the package will come into contact with each other, and the contents of the package or the cutter will not be damaged.

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 apparatus is simplified. Moreover, the process of cutting and removing the package can be simplified.

[Brief explanation of the drawing]

1 to 4 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 view, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 5 is a side view showing an embodiment of the packaging material cutting and removing device according to the present invention; FIG. 6 is a V1 heavy tax country shown in FIG. 5; FIGS. The figures show the package moving device of the packaging material incision and removal device, FIG. 7 is a plan view, FIG. 8 is a sectional view,
FIG. 9 is a side view, and FIGS. 10 to 12 are views showing the rotating roller and cutter of the packaging material incision and removal device.
Figure 0 is a plan view, Figure 11 is a sectional view taken along the line XI-XI in Figure 10, Figure 12 is a side view, and Figures 13 and 14 are packaging materials of the same packaging material incision and removal device. 13 is a front view, FIG. 14 is a side view, FIG. 15 is an explanatory diagram of the operation of the packaging material cutting and removal device, and FIGS. 16 and 17 are views of conventional packaging materials, respectively. It is an explanatory view of an incision removal device. DESCRIPTION OF SYMBOLS 1... Packaging body, 2... Packaging material, 3.4... Rotating roller, 5.6... Rotating blade, 10... Frame, 11
...butsusha, 12...air cylinder, 13...
・Guide rod, 14° 15... Guide member, 18... Erection member, 19... Support side plate, 20... Thin cylinder, 21... Drive motor, 22... Drive pulley, 23
... Round belt, 24 ... Regulation member, 25 ... Packaging material removal device, 26.27 ... Stripping roller, 28
... Presser roller, 30 ... Swing arm, 32 ...
Thin cylinder. Figure 1 Figure 2 Figure 3 Figure 4 (a) <C) Figure 15 (a) (b) Figure 16 Figure 17

Claims (1)

[Claims] A device for incising and removing packaging material from a columnar packaging body covered with a sheet-like packaging material includes a packaging body moving device that moves the packaging body along its longitudinal direction, and a contact engagement device that contacts the top surface of the moving packaging body. a pair of rotating rollers that together apply slack to the packaging material and form a bag-shaped slack portion extending in the longitudinal direction of the package; The pair of rotating rollers are provided with a cutter for cutting a slack portion formed in the packaging material, and a packaging material removal device for removing the cut packaging material from the packaging body, and the pair of rotating rollers are arranged so that the upper side of the rotating shaft thereof is lower than the lower part. 1. A packaging material cutting and removing device, characterized in that the packaging material cutting and removing device is arranged to be inclined so as to be located on the upstream side with respect to the moving direction of the packaging body.