JPH0853112A - Device for opening and removing wrappage - Google Patents

Abstract

PURPOSE:To cut a wrappage open and remove the same from a package without giving damages to contents or a cutter by a method wherein a slack is formed on the wrappage with the upper side of the wrappage held, and a needle-like member is inserted into the slack to raise it upward and cutting is made with a rotary cutter. CONSTITUTION:The upper end of a wrappage 2 is held with a pair of paper chuck plates 17 that are closed by operation of a paper chuck cylinder 16, and thereby a bag-like slack 2a is formed and the paper chuck cylinder 16 is moved up. Then, the front end 22a of a paper slasher 22 is inserted into the slack 2a while the slack is being held. Then, the paper chuck plates 17 are opened by operation of the paper chuck cylinder 16 while the package 1 is prevented from moving up by a pair of holding bars 19. A stopper plate 26 is moved up for retreat, and the package 1 is moved toward the paper slasher 22 and the wrappage 2 raised up by the front end 22a of the paper slasher 22 is cut open continuously with a rotary cutter 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging material cutting and removing device, and more particularly to a packaging material cutting and removing device for cutting and removing a packaging material from a cylindrical packing body.

[0002]

2. Description of the Related Art Generally, a can lid such as a food can filled with food products such as beer and soft drinks is piled up in a cylindrical shape in a can making process, wrapped with a wrapping paper, and then sent to a canning process. Then, the wrapped can lid has the wrapping paper removed in the canning process,
The contents are filled and supplied one by one to the can main body located in the tightening step, and the can body is covered with the mouth portion to perform the tightening.
Then, in order to remove the wrapping paper from the packaging body in which the cylindrical contents such as the can lid described above are wrapped with the wrapping paper, there is a packaging material cutting and removing device as shown in FIG. As shown in the figure,
On the frame 52 of the packaging material cutting and removing device 51, a pusher 53 that constitutes a packaging moving device is disposed on the front side thereof, and the suction opening 55a and the cutter 56 of the vacuum duct 55 are provided on the rear side in the central portion. A packaging material removing device 58 is provided for stripping the cut packaging material from the packaging body.
Further, as shown in FIG. 9, the suction opening 55 a of the vacuum duct 55 and the cutter 56 are supported by a supporting member provided upright from the frame 52.

The packaging body 1 is a packaging material cutting and removing device 5
1, the air cylinder is activated and pusher 5
3 moves forward, the rear end of the package 1 is pushed, and moves in the direction of arrow X, as shown in FIG. When the front end of the package 1 is fed to the position of the suction opening 55a, the suction force from the vacuum pump acts on the package 1 upward, and the package 1
The wrapping material 2 wound around the outer surface of the wrapping material 2 is loosened to form a bag-shaped slack portion 2a on the upper surface of the wrapping body 1. And
By moving the package 1 to the downstream side, the bag-shaped slack portion 2a extending in the longitudinal direction of the package 1 is continuously formed on the packaging material 2. At this time, the bag-shaped slack part 2a is
6 is used to make a continuous incision in the longitudinal direction.

[0004]

By the way, in the packaging material cutting and removing apparatus as described above, the upper portion of the packaging material is sucked through the suction opening 55a of the vacuum duct 55, so that the cutter 5 is removed.
Although the packaging material is continuously cut in the longitudinal direction by 6,
At that time, the packaging material is sucked and floated, and is in an unstable state. Depending on the sharpness of the cutter, there is a risk of defective cutting or damage to the cutter itself. Further, since the suction blower for the vacuum duct is used, the cost of the device is high and the power cost is high.

Therefore, the present invention is a wrapping material having a simple structure that can stably and reliably cut and remove the wrapping paper from the wrapping material without stopping the wrapping material and without damaging the contents or the cutter of the wrapping material. An object of the present invention is to provide an incision removal device.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is an apparatus for cutting and removing a packaging material from a columnar packaging body covered with a sheet-shaped packaging material, wherein Packaging material gripping means for gripping the upper surface of the body to loosen the packaging material to form a bag-shaped slack portion extending in the longitudinal direction of the packaging material, and the packaging material below the packaging material gripping means. A pair of pressing bars that are disposed so as to be able to abut on both sides in the longitudinal direction of the packaging body and that prevent upward movement of the packaging body, and are provided on the downstream side of the packaging material gripping means in the packaging body conveying direction, and the tip is tapered, A needle-like member having a long groove on the upper surface of the central portion, the tip of which can be inserted into the slack portion of the packaging material formed by the packaging material gripping means, and which guides the slack portion of the packaging material by lifting it upward; The outer peripheral portion is loosely fitted in the long groove of the member and is guided by the needle member. A rotary blade that continuously cuts a slack portion of the material, a moving unit that relatively moves the packaging body, the needle-shaped member, and the rotary blade along the longitudinal direction of the packaging body, and the cut packaging material And a packaging material removing means for removing the packaging material from the packaging body. Further, the tip of the needle-shaped member may be bent slightly obliquely downward.

[0007]

According to the above construction, the wrapping material gripping means grips the upper surface of the wrapping material to form the slack portion, and the tip of the needle-like member is inserted into the slack portion of the wrapping material, so that the needle-shaped member is the wrapping material. Guide the slack in the slack up. Then, when the packaging material gripping means is deactivated and the moving means is activated to convey the package to the needle-shaped member side, the rotary blade continuously cuts the slack portion of the packaging material guided by the needle-shaped member. At this time, since the pair of pressing bars prevent the package from moving upward, the contents of the package do not come into contact with the needle-shaped member and the rotary blade. Further, since the tip of the needle-shaped member is bent slightly obliquely downward, the tip of the needle-shaped member does not pierce the packaging material upward. Then, the wrapping material cut by the wrapping material removing means is removed from the package.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the packaging material cutting and removing device according to the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing a packaging body according to the present invention. As shown in the drawing, the packaging body 1 has a columnar shape of a predetermined length in which a plurality of disc-shaped can lids 3 are stacked, and the outer surface thereof. Is covered with a sheet-shaped packaging material 2.

FIG. 2 is a side view of the packaging material cutting and removing device according to the present invention. As shown in FIG. 2, the packaging material cutting and removing device 5 has a frame 6 and a front portion of the frame 6. Is provided with a packaging material cutting device A, and a packaging material removing device B is provided at the rear portion of the frame 6. A package feed cylinder 8 is provided in the front part of the frame 6, and a pusher 9 is fixedly attached to the tip of the cylinder rod of the package feed cylinder 8. A pair of package feed cylinders 8 and a pair of pushers 9 are provided above the pusher 9. Guide members 11 and 12 are provided. And
The package 1 placed on the guide members 11 and 12 is transported as the pusher 9 moves.

A support 14 is erected from the center to the rear end of the frame 6, and a paper chuck cylinder 16 is attached to the front end of the support 14 through a paper chuck vertical moving cylinder 15 and the paper chuck cylinder 16 is attached to the paper chuck cylinder 16. Is a pair of paper chuck plates 17,
17 are connected. Further, springs 18, 18 are contracted at the connecting portion between the paper chuck vertical movement cylinder 15 and the paper chuck cylinder 16.

A pair of upper guides 19 and 19 are disposed below the paper chuck cylinder 16 and above the guide members 11 and 12, and the pair of upper guides 19 and 19 are on both sides in the longitudinal direction of the package 1. And prevents the package 1 from moving upward. Then, when the paper chuck vertical movement cylinder 15 is operated to extend the cylinder rod, the paper chuck cylinder 16 moves up, and when the paper chuck vertical movement cylinder 15 is operated to retract the cylinder rod,
The paper chuck cylinder 16 descends, and when the paper chuck cylinder 16 is further operated, the pair of paper chuck plates 17 and 17 grip the upper end of the packaging material 2 to form a bag-shaped slack portion 2a. It has become.

Further, as shown in FIG. 3, the support 1
A case 21 is attached via a case cylinder 20 to the downstream side of the paper chuck cylinder 16 in the conveyance direction of the package. A paper slasher 22 is fixed to the lower side of the case 21 with its front end facing the upstream side in the package conveying direction.
a is bent slightly obliquely downward, and a long groove 22 is formed at the center.
b. The outer peripheral portion of the rotary blade 23 is loosely fitted in the long groove 22b, and the rotary blade 23 is fixed to the rotary shaft 24a of the motor 24 fixed to the case 21. Further, the case 21 is provided with a suction duct port 21a for sucking paper dust. And the case cylinder 2
By operating 0, the case 21 and the paper slasher 22 are moved in the front-back direction of the package transport direction. Further, as shown in FIG. 6A, a stopper cylinder 25 is vertically provided on the support 14, and a stopper plate 26 attached to a cylinder rod of the stopper cylinder 25 prevents movement of the package in the conveying direction. It is like this.

Further, as shown in FIG. 3, the packaging material removing device B disposed on the downstream side of the case 21 and the paper slasher 22 in the packaging body conveying direction is mounted on the frame 6 as shown in FIGS. 4 and 5. A pair of operation rollers 27 rotatably supported so that their outer peripheral surfaces are in contact with each other,
The wrapping material 2 which has 28 and is cut by the rotary blade 23 is placed on the operation rollers 27 and 28 which rotate in reverse, and is stripped and removed here. Further, the unwrap guide 2 is provided above the operation rollers 27 and 28.
9 and a pusher guide 30 are provided, the unwrap guide 29 is fixed to the tip of the cylinder rod 31a of the air cylinder 31, and the pusher guide 30 is fixed to the tip of the cylinder rod 32a of the air cylinder 32. Further, above the operation rollers 27, 28, the pusher rollers 35, 35 for pressing the upper surfaces of the packages stacked on the operation rollers 27, 28 and preventing a stripping error.
And the pusher rollers 35, 35 are rotatably supported by a roller holding member 36.
Is fixed to the tip ends of the cylinder rods 37a, 37a of the pusher roller cylinders 37, 37. Further, a stopper 39 for preventing the forward movement of the front end of the package 1 is provided at the rear ends of the pusher rollers 35, 35 so as to be able to move forward and backward, while the front end of the cylinder rod 40a of the end guide cylinder 40 is provided at the front ends of the pusher rollers 35, 35. An end guide 41 fixedly installed at the end is arranged so as to be able to move back and forth in the vertical direction.

Next, the operation of the packaging material incision removing device according to the present invention will be described with reference to FIGS. 6 and 7. First, FIG.
As shown in (a), when the package 1 is loaded onto the guide members 11 and 12 of the packaging material cutting and removing device 5 and the package feeding cylinder 8 is operated to move the pusher 9 to the paper chuck cylinder 16 side. The package 1 is conveyed on the guide members 11 and 12 as the pusher 9 moves, and comes into contact with the stopper plate 26 of the stopper cylinder 25 to be prevented from moving. Then, with the pair of paper chuck plates 17, 17 of the paper chuck cylinder 16 opened, the paper chuck vertical movement cylinder 15 is operated to lower the paper chuck cylinder 16 to a predetermined position, and the paper chuck cylinder 16 is operated. The pair of paper chuck plates 17, 17 are closed to sandwich the upper end of the packaging material 2 to form a bag-shaped slack portion 2a, and then the paper chuck vertical moving cylinder 15 is operated to operate the spring 1
Paper chuck cylinder 1 against 8 and 18 elastic force
Raise 6 Then, in this state, the case cylinder 20 is operated to move the case 21 and the paper slasher 22 to the upstream side in the transport direction of the package, and the tip end portion 22a of the paper slasher 22 is inserted into the bag-shaped slack portion 2a. The chuck cylinder 16 is operated to open the pair of paper chuck plates 17, 17. At this time, even if the upper end portion of the wrapping paper 2 is grasped and lifted by the paper chuck cylinder 16 to form the bag-shaped slack portion 2a, the canister 3 is not lifted by the upper guides 19 and 19 beyond a predetermined position.

Then, as shown in FIGS. 6B and 6C, the stopper cylinder 25 is operated to operate the stopper plate 26.
To raise and retract the package feeding cylinder 8
To move the pusher 9 toward the case 21,
When the wrapping body 1 is moved in the direction of the paper slasher 22, the wrapping material 2 floated at the tip 22 a of the paper slasher 22 is continuously cut open by the rotary blade 23. At this time, since the front end portion 22a of the paper slasher 22 is bent slightly downward, when the front end portion 22a sticks into the packaging material 2, the front end of the front end portion 22a does not come into contact with the packaging material, and the paper slasher 22 comes off in the middle. Tari can lid 3
Without touching the slack of the packaging material on the upper surface,
The slack portion (bag-shaped slack portion 2a) collected is cut by the rotary blade 23. Further, since the outer peripheral portion of the rotary blade 23 is loosely fitted in the long groove 22b of the paper slasher 22, it never touches the can lid, does not damage the can lid, and does not damage the rotary blade 23. Absent. Moreover, the paper dust generated when the packaging material is cut by the rotary blade 23 can be sucked from the suction duct port 21a.

Next, as shown in FIG. 7A, the wrapping body feeding cylinder 8 is operated to move the pusher 9 to the operation rollers 27, 28 side, and the wrapping material 1 in which the wrapping material is cut open accordingly. Operation roller 2
Unwrap guide 29 and pusher guide 3 on 7, 28
0 is slid on the upper surface and conveyed, abuts against the stopper 39, the movement of the package 1 is blocked, and the end guide cylinder 40 is operated to lower the end guide 41. When the air cylinder 31 is operated and the unwrap guide 29 is retracted, the operation rollers 27, 28 are moved.
The wrapping body 1 with the wrapping material cut out is loaded on the top, and the pusher roller cylinders 37, 37 are operated to move the roller holding members 36, 36 downward to wrap the pusher rollers 35, 35, 35, 35. Package 1 with the material cut out
The operation rollers 27, 2 in this state.
When the 8 is rotated, the packaging material 2 moves to the operation roller 2
It is caught in 7, 28 and stripped off.

Then, as shown in FIG. 7B, the pusher roller cylinders 37, 37 are actuated to move the roller holding members 36, 36 upward, and the pusher rollers 35, 35, 35, 35 are raised. When the can lids 3, 3, ... Are moved to the can lid transfer line when the pusher guide 30 is advanced by operating the air cylinder 32 by retracting in the direction.

In the above-mentioned embodiment, the air cylinder is used as the package feeding cylinder, but it is not limited to this and other cylinders such as a hydraulic cylinder and an electric cylinder may be used.

[0019]

As described above, according to the present invention,
The wrapping material gripping means grips the upper surface of the packaging material to form a slack portion, the tip of the needle-shaped member is inserted into the slack portion of the packaging material, and the needle-shaped member lifts the slack portion of the packaging material upward. The slack portion of the wrapping material guided by the rotary blade to the needle-shaped member is continuously cut open, and at this time, since the pair of pressing bars prevents the wrapping body from moving upward, the contents of the wrapping body The product does not come into contact with the needle-shaped member and the rotary blade, and it is possible to reliably prevent the product from being damaged and the rotary blade from being damaged. In addition, since the rotary blade is located above the long groove provided on the upper surface of the central portion of the needle-shaped member, the packaging material can be cut reliably and the rotary blade does not contact the product, so that it can be rotated as in the past. The blade does not scratch the product at all, and the product can be protected more reliably. Further, since the tip of the needle-shaped member is bent slightly obliquely downward, the tip of the needle-shaped member does not pierce the packaging material upward, and the packaging material can be reliably cut open.

[Brief description of drawings]

FIG. 1 is a side sectional view of a package according to the present invention.

FIG. 2 is a side view showing a packaging material incision removing device according to the present invention.

FIG. 3 is a side view showing a packaging material cutting device of the packaging material cutting and removing device according to the present invention.

FIG. 4 is a schematic front view showing the packaging material removing device of the packaging material cutting and removing device according to the present invention.

FIG. 5 is a schematic side view showing the packaging material removing device of the packaging material cutting and removing device according to the present invention.

6 (a) to 6 (c) are operation explanatory views of the packaging material cutting device according to the present invention.

7 (a) and 7 (b) are operation explanatory views of the packaging material removing apparatus according to the present invention.

FIG. 8 is a side view showing a conventional packaging material incision removing device.

FIG. 9 is a side view showing a packaging material incision portion of a conventional packaging material incision removing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 packaging body 2 packaging material 2a bag-shaped slack part of packaging material 3 can lid 5 packaging material cutting and removing device A packaging material cutting device B packaging material removing device 6 frame 8 packaging body feeding cylinder 9 pusher 11, 12 guide member 14 support 15 Paper Chuck Vertical Moving Cylinder 16 Paper Chuck Cylinder 17 Paper Chuck Plate 19 Upper Guide 20 Case Cylinder 21 Case 21a Suction Duct Port 22 Paper Slasher 22a Paper Slasher Tip 22b Paper Slasher Long Groove 23 Rotating Blade 24 Motor 24a Motor Rotation Axis 27, 28 Operation roller

Claims (2)

[Claims] 1. An apparatus for incising and removing a packaging material from a columnar packaging body covered with a sheet-shaped packaging material, wherein an upper surface of the packaging body is gripped to loosen the packaging material, and the length of the packaging body is increased. And a packaging material gripping means that forms a bag-shaped slack extending in a direction, and is arranged below the packaging material gripping means and on both sides in the longitudinal direction of the packaging body so that the packaging material gripping means can move upward. And a pair of pressing bars for preventing the packaging material, which is provided on the downstream side of the packaging material gripping means in the package conveying direction, has a tapered tip, has a long groove in the upper surface of the central portion, and is formed by the packaging material gripping means. A needle-like member that can be inserted into the slack portion of the packaging material and that guides the slack portion of the packaging material by raising it upwards; and the outer periphery of the needle-shaped member is loosely fitted in the long groove of the packaging material and is guided by the needle-shaped member. A rotary blade that continuously cuts the slack part of the material, the package and the needle A moving means for relatively moving the material and the rotary blade along the longitudinal direction of the packaging body, and a packaging material removing means for removing the cut packaging material from the packaging body. Characteristic packaging material incision removal device. 2. The packaging material incision removing device according to claim 1, wherein the tip of the needle-shaped member is bent slightly obliquely downward.