Package making – Means to open or erect receptacle – With cutting means
Patent
1996-10-16
1998-05-19
Coan, James F.
Package making
Means to open or erect receptacle
With cutting means
533811, 414412, B65B 6900
Patent
active
057523592
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The invention relates to a device for opening sheet-like material, such as packaging paper, around a cylindrical object, which device comprises a support for the object as well as a carrier which is movable relative to the support over a predetermined path length and provided with friction means like at least a pair of wheels. The rotation shafts of the wheels enclose an angle, such that during the movement of the carrier the wheel peripheries exert a force on the sheet-like material directed towards each other in order to pull the sheet-like material more tightly around the object and to form a buckle or standing fold. The carrier is also provided with a cutting member which is situated behind the pair of wheels in the direction of movement.
Such a device is described in the Netherlands patent application no. 9201954.
The problem which can occur in practice is that the packaging around the cylindrical object becomes creased as a result of storage and transportation, which prevents the outward bulging of the packaging as a result of the rubbing effect of the friction means. This is of particular importance at the start of the operation, that is, initiating of the opening cut in the packaging, since the cutting member cannot operate optimally.
SUMMARY OF THE INVENTION
The invention has for its object to obviate the above stated drawback and provides for this purpose a device which is characterized in that at the beginning of the path length is arranged a puncture member to be inserted into said fold which can be carried transversely of the movement of the carrier from a position outside the support to a position close to the cutting member and vice versa.
Due to the puncture member which operates transversely of the direction of movement of the carrier and is situated close to the beginning of the opening cut, the packaging can initially be pierced, lifted and this lifted part of the packaging can then be cut into, whereafter the further bulging deformation of the packaging is provided by the pair of wheels.
It is noted that an inserting member for lifting the leading edge of a rotatably driven paper roll is disclosed in U.S. Pat. No. 4,821,971. This lifting member will not puncture the paper material.
If the device is embodied with a rotatably driven cutting wheel or disc, this wheel can be embodied with a lifting member which cooperates with the puncture member such that the bulging action is partially accomplished by the lifting member.
Other features and advantages of the invention will be further elucidated in the FIGURE description hereinbelow of an embodiment of the invention.
BRIEF DESCRIPTION OF THE DRAWING
The drawing shows a perspective view of an embodiment of the invention which shows a part of the device close to the beginning of the opening cut on the packaging.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The device includes a fixed frame 1 which has a guide rail 2 along which a carrier 3 is movable in the direction of the arrow P1. The frame 1 is further provided with a support 4 which serves to receive an object V which here takes a cylindrical form and is packed in a paper envelope P which has to be removed by the device. The object V can be, for example, a quantity of bottom or cover parts of cans placed against each other.
The carrier 3 includes a downward directed support 5 which has on the underside a forward pointing leg 6. A cutting disc 7 is rotatably mounted on leg 6, wherein the bearing shaft of cutting disc 7 has a pulley 8 attached thereto.
It is noted that the downward oriented support 5 has a hinge 9, the pivot axis of which coincides with the axis of a rotation shaft 11 parallel to the rotation shaft of the cutting disc 7. Fixedly attached to the rotation shaft on the front side of the support is a pulley 12 around which is trained a belt 13, which is also trained around the pulley 8. Attached to the other side of the rotation shaft 11 is a tooth wheel 14 around which a toothed belt 15 is trained. The carrier has on
REFERENCES:
patent: 5060456 (1991-10-01), Wehrli
patent: 5101703 (1992-04-01), Tanaka et al.
Coan James F.
Kim Gene L.
Sardee Industries Inc.
LandOfFree
Device for opening sheet-like material, such as packing paper, a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for opening sheet-like material, such as packing paper, a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for opening sheet-like material, such as packing paper, a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1844357