AU616233B2 - Creation of Inventions and Patents with Artificial Intelligence

AU616233B2 – Apparatus for cutting and removing package material
– Google Patents

AU616233B2 – Apparatus for cutting and removing package material
– Google Patents
Apparatus for cutting and removing package material

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Publication number
AU616233B2

AU616233B2
AU28905/89A
AU2890589A
AU616233B2
AU 616233 B2
AU616233 B2
AU 616233B2
AU 28905/89 A
AU28905/89 A
AU 28905/89A
AU 2890589 A
AU2890589 A
AU 2890589A
AU 616233 B2
AU616233 B2
AU 616233B2
Authority
AU
Australia
Prior art keywords
packaged object
package material
package
rollers
packaged
Prior art date
1988-01-29
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Ceased

Application number
AU28905/89A
Other versions

AU2890589A
(en

Inventor
Masasi Hanamoto
Masao Hirao
Yoshiaki Nogami
Hisasi Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Kirin Brewery Co Ltd

Original Assignee
Kirin Brewery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1988-01-29
Filing date
1989-01-30
Publication date
1991-10-24

1988-01-29
Priority claimed from JP1744988A
external-priority
patent/JPH01199837A/en

1988-12-21
Priority claimed from JP32260888A
external-priority
patent/JPH02166034A/en

1989-01-30
Application filed by Kirin Brewery Co Ltd
filed
Critical
Kirin Brewery Co Ltd

1989-08-03
Publication of AU2890589A
publication
Critical
patent/AU2890589A/en

1991-10-24
Application granted
granted
Critical

1991-10-24
Publication of AU616233B2
publication
Critical
patent/AU616233B2/en

2009-01-30
Anticipated expiration
legal-status
Critical

Status
Ceased
legal-status
Critical
Current

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Classifications

B—PERFORMING OPERATIONS; TRANSPORTING

B08—CLEANING

B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL

B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto

B08B9/08—Cleaning containers, e.g. tanks

B08B9/083—Removing scrap from containers, e.g. removing labels

B—PERFORMING OPERATIONS; TRANSPORTING

B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL

B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING

B65B69/00—Unpacking of articles or materials, not otherwise provided for

B65B69/0008—Opening and emptying bags

B—PERFORMING OPERATIONS; TRANSPORTING

B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL

B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING

B65B69/00—Unpacking of articles or materials, not otherwise provided for

B65B69/0033—Unpacking of articles or materials, not otherwise provided for by cutting

Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC

Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T83/00—Cutting

Y10T83/647—With means to convey work relative to tool station

Y10T83/6472—By fluid current

Description

Reqistered Patent Attorney.
TO: THE COMMISSIONER OF PATENTS
AUSTRALIA
SBR/JS/0066D Sr p 0S pIs p V’ 00 a 1 40 I I I
II
S I1 C 01 o O 0 r -I 616 2
S
33 F Ref: 84968 FORM COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE: Class Int Class Complete Specification Lodged: Accepted: Published: Priority: Related Art: Name and Address of Applicant: Address for Service: Kirin Beer Kabushiki Kaisha No.26-1, Jingumae 6-chome Shibuya-ku, Tokyo-to
JAPAN
Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia Complete Specification for the invention entitled: Apparatus for Cutting and Removing Package Material The following statement is a full description of this invention, including the be,’ method of performing it known to me/us 5845/4 1 3″ APPARATUS FOR CUTTING AND REMOVING PACKAGE MATERIAL BACKGROUND OF THE INVENTION The present invention relates to an apparatus for cutting and removing a package material from a packaged object, and more particularly to an apparatus for cutting and removing a package material from a cylindrical packaged object.
Ends to be attached to open-top food cans which will be filled with beer, beverage, or the like are stacked after they have been manufactured, then packaged and sent to a 0o0 Q canning process. In the canning process, the package is o removed from an end stack, and the ends are supplied one at a time to an open-top can which has been filled with a o content and positioned for end seaming. Then, the end is placed on the open top of the can and attached thereto by o seaming.
Japanese Laid-Open Patent Publication No. 58-41030 discloses an apparatus for removing a package sheet from a packaged cylindrical object such as a stack of can ends. As shown in FIGS. 24(a) and 24(b) of the accompanying drawings, the disclosed apparatus includes a pair of lower rollers 41, 42 for receiving a packaged cylindrical object 43 wrapped by a package paper 44. The lower rollers 41, 42 are rotated in contact with the object 43 to stretch the package paper 44, thereby forming a slackened portion between the rollers 41, S1 n 11 42. The slackened portion of the package paper 44 is then longitudinally cut by a cutter 45 [see FIG. 24(a)].
Thereafter, a pair of upper rollers 47, 48 held in contact with the object 44 is rotated to grip the package paper 44 therebetween and remove the package paper 44 upwardly [see FIG. 24(b)].
Another known package paper remover is disclosed in Japanese Laid-Open Patent Publication No. 56-41498.
According to the disclosed package paper remover, as shown in FIGS. 25(a) through 25(d) of the accompanying drawings, a package paper 54 wrapping a cylindrical object 53 on a vshaped receiver 56 is gripped by a pair of grippers 51, 52, and the packaged object 53 is lifted off the receiver 56 to S’ make a stretched portion of the package paper 54. A cutter 55 is operated to cut the stretched portion of the package paper 54 [FIG. Then, the grippers 51, 52 are opened 0″ *0 to drop the object 53 onto the receiver 56 [FIG. o after which the packaged object 53 is placed on a pair of rollers 57, 58. The rollers 57, 53 are rotated in opposite directions to draw the package paper 84 therebetween and remove the same from the object 53 [FIG. In both of the above known package removing apparatus, C o the package paper is pulled to make a slackened or stretched portion, cut, and then removed while the packaged object is being stopped. Where package papers are to be successively removed from a number of packaged objects, a next packaged 2 ‘i
I
j object must be kept in a standby condition for a long period of time while the package paper is being removed from one packaged object. Therefore, the earlier packcage removers have a limited capacity when removing package papers from a succession of packaged objects.
With thce package removing apparatus disclosed in the former publication, since the lower portion of the package paper 44 is slackened by frictional engagement with the rollers 41, 42, it may not successfully be slackened due to roller slippage or the like, and hence may not successfully 0 be cut by the cutter 45. Another problem is that inasmuch 0a0 as the cutter 45 approaches the packaged object 43 in order to cut the package paper 44, the cutting edge of the cutter 0 45 may directly contact the packaged object 43, thus S, damaging the object 43 or the cutter 45 or both.
According to the package remover disclosed in the o; latter publication, the packaged object 53 is lifted off the o o receiver 56 and the cutter 55 is advanced toward the S stretched portion of the package paper 54 before the package paper 54 is cut. The packaged object 53 must therefore be lifted or suspended horizontally for proper positional o 0 relationship to the cutter 55. Because the grippers 51, 52 are associated with a lifting device, the entire package removing apparatus is complex in structure and highly costly. The cutting edge of the cutter 55 may also directly contact the packaged object 53, thus damaging the object 53 3 -4or the cutter 55 or both.
SUMMARY OF THE INVENTION It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.
There is disclosed herein an apparatus for cutting open and removing a sheet-like package material from an elongate packaged object, said apparatus comprising: means for stretching the package material to form a loop-like slackened portion of the package material, said slackened portion extending in a longitudinal direction on an upper surface of the packaged object; a rotary cutter having a rotation shaft disposed so as to rotate about a fixed axis for cutting open the slackened portion; a moving device for continuously moving the package object in the longitudinal direction thereof; and, a removing device for removing the cut-open package material from the packaged object.
o 0 0 0 0 0 0 00000 0 00 00 0000 00a 1*1
.I
5 BRIEF DESCRIPTION OF THE DRAWINGS A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings, wherein: Fig. 1 is a front elevational view showing the principles of operation of a first embodiment of the present invention; Fig. 2 is a plan view showing the principles of operation of the first embodiment; Fig. 3 is a side elevational view showing the principles of operation of the first embodiment; Fig. 4 is a view illustrating the manner in which a package material is cut; Fig. 5 is a front elevational view of an apparatus for cutting and removing a package material according to the first embodiment; Fig. 6 is a plan view of the apparatus as viewed in the direction of the arrow VI; 0 4~ 4 “0 1, 0 4 4 6 4i 44C I 4 4 4e 4 4* 04444 4 4044 S4 44) 4 44P 44
A
4 7 29lij FIG. 7 is a plan view of a packaged object moving device of the apparatus; FIG. 8 is a sectional side elevational view of the packaged object moving device; FIG. 9 is a transverse cross-sectional view of the packaged object moving device; FIG. 10 is a plan view of rollers and a cutter of the apparatus; FIG. 11 is a cross-sectional view taken along line XI XI of FIG. 0 FIG. 12 is a side elevational view of the rollers and the cutter; FIG. 13 is a front elevational view of a package c o o material removing device of the apparatus; FIG. 14 is a side elevational view of the package material removing device; 0 FIGS. 15(a) through 15(d) are views showing operation of the apparatus; FIG. 16 is a sectional front elevational view showing the principles of operation of a second embodiment of the present invention; I o o. FIG. 17 is a cross-sectional view showing the principles of operation of the second embodiment; 4 FIG. 18 is a front elevational view of an apparatus for cutting and removing a package material according to the second embodiment; 6 3 4^ Il~lll~ilill ^P 1 1 j FIG. 19 is a plan view of the apparatus as viewed in the direction of the arrow IXX; FIG. 20 is a view showing a suction opening and a cutter of the apparatus of the second embodiment; FIG. 21 is a cross-sectional view taken along line XXI XXI of FIG. FIG. 22 is a sectional front elevational view showing the suction opening and the cutter; FIGS. 23(a) through 23(d) are views showing operation of the apparatus of the second embodiment; FIGS. 24(a) and 24(b) are views illustrating an operation sequence of a conventional apparatus for cutting and removing a package material; and o FIGS. 25(a) through 25(d) are views showing an operation sequence of another conventional apparatus for cutting and removing a package material.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS oo.. FIGS. 1 through 14 and 15(a) through 15(d) show an apparatus for cutting and removing a package material according to a first embodiment of the present invention.
o FIGS. 1 through 3 illustrate the principles of operation of the first embodiment. A packaged object 1 such as a stack of can ends is moved in its longitudinal direction indicated by the arrow A. The packaged object 1 is of a cylindrical shape having a predetermined length and -7i i is covered with a sheet-like package material 2. A pair of rotatable rollers 3, 4 made of a resilient material and having respective outer peripheral surfaces held against each other is disposed on the path of movement of the packaged object 1, the rollers 3, 4 being engageable with an upper surface of the packaged object 1 as it moves. The rollers 3, 4 are rotatable about their own axes 3a, 4a, respectively, extending parallel to each other and inclined a given angle 0 from the vertical direction such that upper portions of the axes 3a, 4a are positioned upstream of lower o portions thereof with respect to the direction (indicated by 4 the arrow A) of movement of the packaged object 1.
SWhen the packaged object 1 is moved in the direction of the arrow A into contact with the rollers 3, 4, the package material 2 wrapped around the object 1 is subjected to forces cending to pull the package material 2 in the directions of the arrows B in FIG. 3 to form a loop-like slackened portion 2a on the upper surface of the packaged object 1. Since the rollers 3, 4 are inclined upstream with respect to the direction of travel of the packaged object 1, rotation of the rollers 3, 4 provides forces tending to pull the package material 2 obliquely upwardly as indicated by j the arrow C in FIG. 1. On continued movement of the a packaged object 1 in thL direction of the arrow A, the looplike slackened portion 2a of the package material 2 is continuously formed in the longitudinal direction of the 8 packaged object 1. Therefore, as illustrated in FIG. 3, a cutter K positioned slightly upwardly of the region where the rollers 3, 4 contact the packaged object 1 can cut open the slackened portion 2a of the package material 2 in the axial direction Thereof, as shown in FIG. 4. The cutter K may be separate from the rollers 3, 4 as shown in FIG. 3, or rotary cutters may be integrally formed with the rollers 3, 4, respectively.
An apparatus for cutting and removing a package material according to the first embodiment will hereinafter o, be described with reference to FIGS. 5 through 14 and through *0 FIG. 5 shows in side elevation the apparatus generally designated by M. The apparatus M includes a frame supporting a pusher 11 of a packaged object moving device on a rear portion 10OR thereof. The frame 10 also supports a 0 pair of rotatable rollers 3, 4 on a central portion 100 “o0 o° thereof and a package material removing device 25 on a front portion 10F thereof for stripping off a package material 2 from a packaged object 1. The frame 10 is shown as being inclined for the reason of adapting itself to a next o process, but may lie horizontally. The packaged object I is moved from the rear frame portion 10R (upstream side) toward the front frame portion 1OF (downstream side). As iJlustrated in FIG, 6, a pair of guide members 14, 15 is disposed on the frame 10 in the longitudinal direction i -9i i Ii
II
thereof for supporting and guiding the packaged object 1 at its opposite sides when the packaged object 1 is moved along the guide members 14, As illustrated in FIGS. 7 through 9, the pusher 11 is coupled to a longitudinally movable rod 12a of an air cylinder 12 and fitted over a guide rod 13 disposed longitudinally in the frame 10. The pusher 11 is therefore movable back and forth along the guide rod 13 in response to operation of the air cylinder 12. The pusher 11 has a pusher rod lla on its upper portion for pushing the trailing end of the packaged object 1 placed on the guide members 14, a 15 to move the packaged object 1 forwardly or downstream when the pusher 11 is moved downstream along the guide rod 13.
As shown in FIGS. 10 through 12, the rollers 3, 4 are disposed slightly above the guide members 14, respectively, and supported on a beam member 18 extending transversely between side plates 16, 17 mounted vertically on the frame 10. The beam member 18 has a bearing 18a from which a support side plate 19 of an L-shaped cross section is swingably suspended. The rollers 3, 4 are rotatably supported on the support side plate 19.
The rollers 3, 4 are rotatable about their own axes 3a, 4a, respectively, extending parallel to each other and inclined a given angle 0 from the vertical direction such that upper portions of the axes 3a, 4a are positioned 10
II
upstream of lower portions thereof with respect to the direction of movement of the packaged object 1. The angle 0 of inclination can be varied by extending or retracting an operating rod 20a of a short cylinder 20 fixed to the beam member 18 to swing the support side plate 19. A belt 23 of a circular cross section is trained around the rollers 3, 4 and a driver pulley 22 directly coupled to a drive motor 21 mounted on the support side plate 19. The rollers 3, 4 can be rotated in the directions of the arrows by frictional engagement between the belt 23 and the rollers 3, 4 when the noo drive motor 21 is energized. The rollers 3, 4 have integral rotary cutter blades 5, 6, respectively, around their outer peripheral surfaces, the rotary cutter blades 5, 6 serving o as a scissors-like cutter for sandwiching and cutting the o package material 2. Two holder members 24R, 24F are disposed respectively upstream and downstream of the rollers 3, 4 for holding the upper surface of the package material 1 o’ 7” to prevent the package material 1 from being lifted off the guide members 14, The package material removing device 25 which is positioned slightly downstream of the rollers 3, 4 comprises 0o a pair of stripping rollers 26, 27 positioned with their outer peripheral surfaces held against each other, as shown in FIGS. 13 and 14. The package material 2 which has been cut open by the rotary cutter blades 5, 6 is placed on the rollers 26, 27, which are rotated in the opposite directions L L *I to remove the package material 2 from the object 1. A plurality of coaxial presser rollers 28 are disposed above the stripping rollers 26, 27 for holding down the upper surface of the packaged object 1 on the stripping rollers 26, 27 to press the object 1 against the stripper rollers 26, 27 for reliable removal of the package material 2 from the object 1. The presser rollers 28 are rotatably supported on one end of swing arms 30 by a shaft 29, and the swing arms 30 are pivotally supported at the other end on a side plate 31 by a pivot shaft 30a, the side plate 31 being vertically mounted on the frame 10. The swing arms 30 are coupled to an operating rod 32a of a short cylinder 32. The swing arm 30 is therefore swingable about the pivot shaft o, 30a in the directions of the arrows when the operating rod 32a is extended and retracted by the cylinder 32.
Operation of the package material cutting and removing °o apparatus of the above construction will be described below with reference to FIGS. 15(a) through The packaged object 1 is supplied onto the guide members 14, 15 of the apparatus M in the direction of the arrow D (FIG. The air cylinder 12 is operated to move the pusher 11 forwardly to cause the pusher rod lla to push the trailing end of the packaged object 1, thereby moving the packaged object 1 in the direction of the arrow in FIG.
When the leading end of the packaged object 1 reaches the rollers 3, 4, the packaged object 1 is brought 12 into contact with the rollers 3, 4 while it is being held down by the holder members 24R, 24F against upward displacement as shown in FIG. 15(b). The package material 2 wrapping the outer peripheral surface of the packaged object 1 is now stretched obliquely upwardly to form a loop-like slackened portion 2a on the upper surface of the object 1.
As the packaged object 1 is further moved downstream, the loop-like slackened portion 2a of the package material 2 is continuously formed in the longitudinal direction of the packaged material 1. At this time, the loop-like slackened portion 2a is sandwiched and cut open by the rotary cutter blades 5, 6 of the rollers 3, 4 as shown in FIG. Although the package material 2 at the leading end of the packaged object 1 remains uncut, the following portion of the package material 2 is continuously cut open in the longitudinal direction.
After the package material 2 has been cut open, the packaged object 1 is continuously pushed downstream by the pusher 11 so that it is delivered onto the stripping rollers 26, 27 of the package material removing device 25. When the entire packaged object 1 is put on the stripping rollers 26, 27, the cylinder 32 is actuated to lower the swing arm that has been lifted to an upper position, for enabling the presser rollers 28 to hold the upper surface of the packaged object 1 as shown in FIG. 15(d). The stripping rollers 26, 27 are now rotated in the opposite directions to start i 13
I’
stripping off the package material 2 from the object 1. The uncut portion of the package material 2 at the leading end of the object 1 is forcibly torn apart when the package material 1 is pulled due to frictional forces produced between the stripping rollers 26, 27 and the package material 2. Therefore, the package material 2 is finally completely removed from the object 1.
An apparatus for cutting and removing a package material according to a second embodiment of the present invention will be described below with reference to FIGS. 16 through 22 and 23(a) through 23(d).
FIGS. 16 and 17 illustrate the principles of operation of the second embodiment. A packaged object 1 such as a stack of can ends is moved in its longitudinal direction indicated by the arrow A. The packaged object 1 is of a cylindrical shape having a predetermined length and is covered with a sheet-like package material 2. A suction opening 33o of a vacuum duct 33 coupled to a vacuum pump (not shown) is positioned in the path of movement of the packaged object 1 closely to the upper surface of the packaged object 1. The package material 2 wrapping the eo i outer periphery of the object 1 is drawn upwardly under suction by a vacuum developed in the vacuum duct 33 by the vacuum pump. A circular cutter 34 which lies in a vertical plane is disposed in the vacuum duct 33 near the suction opening 33o.
S14i i When the packaged object 1 is moved in the direction of the arrow A into a position underneath the suction opening 33o, the package material 2 wrapped around the object 1 is subjected to forces tending to pull the package material 2 in the directions of the arrows B in FIG. 17 to form a loop-like slackened portion 2a on the upper surface of the packaged object 1.
On continued movement of the packaged object 1 in the direction of the arrow A, the loop-like slackened portion 2a of the package material 2 is continuously formed in the longitudinal direction of the packaged object 1. As illustrated in FIG. 17, the cutter 34 that is positioned slightly above the slackened portion 2a is rotated to cut open the slackened portion 2a in the axial direction while the packaged object 1 is being moved.
An apparatus for cutting and removing a package material according to the second embodiment will hereinafter be described with reference to FIGS. 18 through 22 and 23(a) .a.OI’ through 23(d).
FIG. 18 shows in side elevation the apparatus generally designated by M. The apparatus M includes a frame ‘o 10 supporting a pusher 11 of a packaged object moving device
*I
on a rear portion 1OR thereof. The frame 10 also supports the suction opening 33o and the cutter 34 on a central portion 10C thereof and a package material removing device on a front portion 10F thereof for stripping off a ii i i 1 package material 2 from a packaged object 1. The pusher 11 and the package material removing device 25 are identical in structure and operation to those of the first embodiment.
The frame 10 is shown as being inclined for the reason of adapting itself to a nexc process, but may lie horizontally.
The packaged object 1 is moved from the rear frame portion (upstream side) toward the front frame portion (downstream side). As illustrated in FIG. 19, a pair of guide members 14, 15 is disposed on the frame 10 in the longitudinal direction thereof for supporting and guiding S””o the packaged object 1 at its opposite sides when the aeo packaged object 1 is moved along the guide members 14, oo As illustrated in FIGS. 20 through 22, the suction 0 o opening 33o of the vacuum duct 33 and the cutter 34 are 0 °o disposed slightly upwardly of the guide members 14, 15. The vacuum duct 33 and the cutter 34 are supported on a support member 36 vertically mounted on the frame 10. More specifically, the vacuum duct 33 is fixed to the support .g member 36 and has its lower end open into the suction opening 33o. A motor 39 is fixedly supported on the support member 36 and has a rotatable shaft 39a. To the rotatable o o shaft 39a, there is secured a support shaft 35 supporting the cutter 34 which has a saw-toothed cutter blade 34a on its outer periphery. The cutter 34 is positioned near the suction opening 33o.
Guides 33a bent outwardly from the suction opening 33o r
I
16 are formed on the lower end of the vacuum duct 33 for slidingly guiding opposite sides of the packaged object 1.
Operation of the package material cutting and removing apparatus thus constructed according to the second embodiment will be described below with reference to FIGS.
23(a) through 23(d).
The packaged object 1 is supplied onto the guide members 14, 15 of the apparatus M in the direction of the arrow D (FIG. 19). The air cylinder coupled to the pusher 11 is operated to move the pusher 11 forwardly to cause the pusher rod lla to push the trailing end of the packaged object 1, thereby moving the packaged object 1 in the direction of the arrow in FIG. 23(a). When the leading end of the packaged object 1 reaches the suction opening 33o, a vacuum developed in the vacuum duct 33 by the vacuum pump is applied to the packaged material 1 to upwardly stretch the package material 2 wrapping the outer peripheral surface of the packaged object 1, to form a loop-like slackened portion 2a on the upper surface of the object 1. As the packaged object 1 is further moved downstream, the loop-like o, slackened portion 2a of the package material 2 is o, continuously formed in the longitudinal direciton of the packaged material 1. At this time, the loop-like slackened portion 2a is continuously cut open by the cutter 34 as shown in FIG. 23(c).
After the package material 2 has been cut open, the 17 i ii l ,Ji r packaged object 1 is continuously pushed downstream by the pusher 11 so that it is delivered onto the stripping rollers 26, 27 of the package material removing device 25. When the entire packaged object 1 is put on the stripping rollers 26, 27, the cylinder 32 is actuated to lower the swing arm that has been lifted to an upper position, for enabling the presser rollers 28 to hold the upper surface of the packaged object 1 as shown in FIG. 23(d). The stripping rollers 26, 27 are now rotated in the opposite directions to start stripping off the package material 2 from the object i. The package material 2 is completely removed from the object 1 by being pulled due to frictional forces produced between the stripping rollers 26, 27 and the package material 2.
Cut pieces or debris produced by cutting open the package material 1 is drawn under the vacuum into the suction opening 330 and discharged out.
With the present invention, as described above, the package material is simultaneously stretched to form a slackened portion and cut open in one process of operation while the packaged object is being moved, and then the cutopen package material is removed in a next process while the packaged object is held at rest. Therefore, the time required to keep the packaged object stopped is reduced.
The processes of cutting open and removing the package material are made highly efficient, increasing the processing capacity of the entire apparatus.
I I 4 4 0004o I 4r 4 4O 18 Ut The slackened portion of the package material is formed by a slackened portion forming means, and the package material is cut open by a cutter disposed upwardly of the packaged object. The cutter and the packaged object are kept out of physical contact with each other, and hence the cutter or the packaged object or both are prevented from being damaged.
Furthermore, since the package material can be removed from the packaged object without lifting the packaged object, it is not necessary to provide any lifting device for lifting the packaged object, and the apparatus is relatively simple in overall construction. The procedure for cutting open and removing the package material is simplified.
Although certain preferred embodiments have been shown and described, it should be understood that many changes and modifications may be made therein without departing from the scope of the appended claims.
04a 9 4 00 a 0 4 0 0 4 4 v O 0 o 0 4 40 I I 19 i

Claims (7)

1. An apparatus for cutting open and removing a sheet-like package material from an elongate packaged object, said apparatus comprising: means for stretching the package material to form a loop-like slackened portion of the package material, said slackened portion extending in a longitudinal direction on an upper surface of the packaged object; a rotary cutter having a rotation shaft disposed so as to rotate about a fixed axis for cutting open the slackened portion; a moving device for continuously moving the package object in the longitudinal direction thereof; and, a removing device for removing the cut-open package material from the packaged object.

2. An apparatus according to claim 1, wherein said stretching means comprises a pair of rotatable rollers for contacting the upper surface ol the packaged object to stretch the package material to form the loop-like slackened portion extending in the longitudinal direction of thile packaged object, said rotatable rollers being rotatable about their own axes, S respectively, and inclined such that upper portions of said axes are positioned upstream of lower portions thereof with respect to a direction in which the packaged object is moved.

3. An apparatus according to claim 2, wherein the rotary cutter is integrally formed with said rotatable rollers.

4. An apparatus according to claim 1, wherein said stretching means comprises a suction opening of a vacuum duct connected to a vacuum source for drawing under suction the upper surface the packaged object to stretch 0 the package material to form the loop-like slackened portion extending In the longitudinal direction of the packaged object.

An apparatus according to claim 1, wherein said moving device comprises means for moving the packaged object.

6. An apparatus according to claim 1, wherein said removing device comprises a r-‘r of stripping rollers for frictionally engaging tilhe cut-open package material to remove the same from the packaged object, NT72 LIT 0’/P ‘4

7. An material from substantially drawings. 21 apparatus for cutting open and removing a sheet-like package a’i elongate packaged object, the apparatus being as hereinbefore described with reference to the accompanying DATED this TWENTY-SEVENTH day of MARCH 1991 Kirin Beer Kabushiki Kaisha Patent Attorneys for the Applicant SPRUSON FERGUSON 000ao o 0 o Io 0 0 ,0 i? o

AU28905/89A
1988-01-29
1989-01-30
Apparatus for cutting and removing package material

Ceased

AU616233B2
(en)

Applications Claiming Priority (4)

Application Number
Priority Date
Filing Date
Title

JP63-17449

1988-01-29

JP1744988A

JPH01199837A
(en)

1988-01-29
1988-01-29
Device for cutting and removing packaging material

JP32260888A

JPH02166034A
(en)

1988-12-21
1988-12-21
Apparatus for cutting to open and removing packing material

JP63-322608

1988-12-21

Publications (2)

Publication Number
Publication Date

AU2890589A

AU2890589A
(en)

1989-08-03

AU616233B2
true

AU616233B2
(en)

1991-10-24

Family
ID=26353951
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

AU28905/89A
Ceased

AU616233B2
(en)

1988-01-29
1989-01-30
Apparatus for cutting and removing package material

Country Status (5)

Country
Link

US
(1)

US4997329A
(en)

AU
(1)

AU616233B2
(en)

CA
(1)

CA1318237C
(en)

DE
(1)

DE3902454C2
(en)

GB
(1)

GB2214483B
(en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE8916006U1
(en)

1989-06-29
1992-12-17
Fahr-Bucher Gmbh, 7702 Gottmadingen, De

FR2651172A1
(en)

1989-08-31
1991-03-01
Fahr Bucher Gmbh

METHOD FOR AUTOMATIC LOADING OF MACHINES WITH MASSES DEBALLEES.

JPH03111236A
(en)

1989-09-19
1991-05-13
Tateno Kikai Seisakusho:Kk
Unpacking and processing method for packaged sheet paper

EP0443999B1
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1990-02-20
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Also Published As

Publication number
Publication date

GB8901961D0
(en)

1989-03-22

GB2214483A
(en)

1989-09-06

AU2890589A
(en)

1989-08-03

CA1318237C
(en)

1993-05-25

US4997329A
(en)

1991-03-05

DE3902454C2
(en)

1995-06-29

DE3902454A1
(en)

1989-08-03

GB2214483B
(en)

1992-09-09

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