JPH0364373B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention provides a packaging material for a cylindrical package in which a large number of disc-shaped articles such as can lids are stacked in a row and wrapped in a cylindrical shape with a packaging material such as paper. This invention relates to an automatic incision and removal device.

BACKGROUND TECHNOLOGY Recently, as a packaging material cutting and removal device for this kind of cylindrical packaging, the packaging is positioned in a receiving space defined by a plurality of rotating rollers, rotated, and cut horizontally by a cutter provided below. A method has been proposed in which the entire length of the joint is incised, the packaging material is removed downward, and the cylindrical body from which the packaging material has been incised and removed is pressed in its axial direction and discharged from the receiving space (Special Features). Showa 61
−501086). This packaging has the advantage that paper powder does not fall onto the open cylindrical body unlike the conventional packaging in which the packaging material is cut at the bottom of the package, which is cut at the top.

Problems to be Solved by the Invention However, in the above conventional device, after cutting and removing the packaging material, the cylindrical body is pressed in the axial direction with a pusher and discharged from the receiving space at the position where the packaging material is cut and removed. During this time, the next cylindrical package cannot be supplied to the receiving space. Therefore, it is difficult to increase the speed of the device, and there is a problem that the device cannot be sufficiently adapted to the recent high-speed can manufacturing lines and canning lines. Further, with the above-mentioned conventional apparatus, it is difficult to rotate and hold cylindrical packages of various diameters in a stable state in the receiving space at the packaging material cutting and removal position.

The present invention is an improvement over the conventional one in order to solve the above-mentioned problems, and it is possible to stably rotate and hold cylindrical packages of various sizes in a receiving space, and it is possible to cut open the packaging material. It is an object of the present invention to provide a packaging material cutting and removal device for a cylindrical packaging body that can transfer the cylindrical body from a receiving space in a short time after removal, thereby increasing the speed.

Means for Solving the Problems The configuration of the present invention for achieving the above problems will be explained with reference to the drawings of the embodiments.

The first invention is a device for stably rotating and holding a cylindrical package even when the size of the cylindrical package changes, and for cutting and removing the packaging material at high speed on the underside of the package. A drive roll 10 that is rotationally driven, a free roll 12 that is provided so as to be able to protrude and move in the lateral direction, and a free roll 22 that is movable up and down.
A cutter 17 for cutting the entire horizontal length of the packaging material is provided in the lower part of the receiving space to be located near the outer periphery of the cylindrical package A. A removing means 18 for winding up the packaging material and removing it downward in cooperation with the drive roll 10 is provided at the position to constitute a packaging material cutting and removal mechanism.

A second invention provides a discharge gutter 25 parallel to the side of the packaging material incision and removal mechanism of the first invention, so that the cylindrical body a from which the packaging material has been cut and removed can be protruded and moved in the lateral direction. Freeroll 1 set up in
The high speed of the device is achieved by adopting a technical means of transferring the material from the receiving space to the discharge gutter 25 by pushing it laterally at 2.

Function The cylindrical package A is rotatably held in a receiving space defined by the drive roll 11, the free roll 12, and the vertically movable free roll 22. At this time, the amount of protrusion of the free roll 22 in the vertical direction and the amount of protrusion of the free roll 12 in the lateral direction can be freely adjusted, so that cylindrical packages of various diameters can be stably and reliably rotated and held. By rotating the driving roll 10, the packaging body A is rotated while applying tension to the packaging material, and the packaging material hits the knife 17, and the entire length of the packaging body is cut open. The packaging material is removed downwardly between the drive roll 10 and the removal means 18.

After the removal of the packaging material is completed, the free roll 12 protrudes laterally to transport the cylindrical body a from which the packaging material has been removed from the receiving space to the discharge gutter 25.
Therefore, even a long cylindrical body can be discharged from the receiving time in a short time, and the speed of the line can be increased.

Embodiments Hereinafter, embodiments of the apparatus for cutting and removing packaging materials for cylindrical packages according to the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a conveyor for supplying cylindrical packages, and the cylindrical packages A supplied to the packaging material cutting and removing device by the conveyor are slid along a guide bar 5 by a transverse feed cylinder 3. A conveying machine 2 comprising a moving bushier body 4 transports the packaging material horizontally from the conveyor 1 along the guide 7 to the receiving space at the packaging material cutting and removal position.

A wrapper cut and remove mechanism is located in the wrapper cut and remove position, which wrapper cut and remove mechanism is best shown in FIG.

In the figure, reference numeral 10 denotes a drive roll for forcibly rotating the package A, the circumferential surface of which is covered with a suitable friction material such as rubber, and is rotationally driven by a motor 11. Reference numeral 12 denotes a free roll provided at the tip of a rack rod 13 that is slid by a pinion 14, and allows the support position of the package A to be adjusted according to the diameter of the package A. After the packaging material is removed, the cylindrical body a which protrudes further and from which the packaging material has been removed is pushed to a discharge gutter 25 which is arranged in parallel to the side of the packaging material cutting and removal position. Reference numeral 15 denotes a knife holder, the upper end of which is formed into a convex shape to constitute an engaging portion 16 that contacts and engages with the packaging material of the package A, and a knife 17 is provided at the tip. Preferably, the knife 17 is serrated.

Reference numeral 18 denotes a rotary paddle which is a removing means for sandwiching the packaging material between it and the drive roll 10 and removing it downward. The rotary paddle 18 is attached to a bracket 20 supported by the machine frame 6 via a spring 19, and is designed to always pinch the packaging material with appropriate pressure even if the packaging material is thick, thereby preventing defective ejection of the packaging material. It is composed of

A pair of free rolls 22 are provided at the rod end of the cylinder device 23 for contacting the upper circumferential surface of the package A that has been transversely fed to the packaging material removal position to rotationally hold the package A. It is moved up and down by the cylinder device. Note that 28 is a guide disk that is adjustable at the axial end of the packaging material incision and removal position.

The packaging material incision and removal mechanism is constituted by the above-mentioned members, and the cylindrical packaging body A that has been transported laterally to the packaging material incision and removal position by the conveyor 2 is moved by the driving rolls 11,
It is received by the free roll 12 and the engaging body 16. At the same time, the pair of free rolls 22 descend and come into contact with the upper outer circumferential surface of the package A.
Press and hold so that it can rotate.

Thereafter, the drive roll rotates clockwise in the illustrated embodiment, and the package A is rotated while applying tension to the packaging material due to the frictional force between the friction material on the outer peripheral surface of the drive roll 10 and the packaging material of the package A. On the other hand, the engaging portion 16 of the knife holder 15 acts to engage with the packaging material and prevent the packaging material from moving. As a result, a slack is created in the packaging material between the drive roll 10 and the engaging portion 16, and the packaging material hits the knife 17, which cuts the packaging material in the axial direction of the packaging body. In the case of a can lid package, there is usually a slight gap between the packaging material and the contents, so the packaging material can sag even if the engaging portion 16 does not act.

As the cut ends of the packaging material hang down, the packaging material is pinched between the drive roll 10 and the rotating paddle 18 and removed downward.

In the above process, the protruding position of the free roll 12 and the lowering position of the pair of free rolls 22 are adjusted in advance by the pinion 14 and the cylinder device 23, depending on the diameter of the package.

When the cutting and removal of the packaging material is completed, the drive roll 10
stops rotating, and the free roll 12 is projected diagonally upward by the pinion rack mechanism, and the cylindrical body a from which the packaging material has been removed is transported from the packaging cut-and-remove position to a discharge tray provided parallel to the side of the drive roll 10. Transfer to gutter 25.

Note that in this embodiment, the drive roll 10
is stopped and rotated intermittently during transfer so as not to interfere with the transfer of the cylindrical body a to the discharge gutter 25, but it may be driven to rotate continuously.
Further, although a two-blade rotating paddle was used as a means for removing the packaging material downward, the number of blades may be arbitrary. The removing means is preferably a rotating paddle, but a rotating roll may also be used.

On the opposite side of the discharge gutter 25, the cylindrical body a that has been transversely fed and rolled from the receiving space is placed in the discharge gutter 2.
A stopper 26 is provided to prevent it from jumping out beyond 5. Further, a pair of transfer plates 27 whose spacing is adjusted approximately to the length of the cylindrical body a are reciprocated along the axial direction of the gutter 25 by the cylinder device 30 so as to fit into the gutter of the discharge gutter 25. The cylindrical pair a, which has been moved laterally from the receiving space at the packaging material cutting and removal position, is pushed along the axial direction within the receiving gutter 25 between the transfer plates 27, and is moved into the cylindrical shape. Transfer pair a to the next process.

The apparatus of this embodiment shown in the drawings is for supplying a package of can lids to two can manufacturing lines after cutting and removing the packaging material. will be sent to

The sorting device 30 has a tiltable sorting gutter 31 on an extension of the discharge gutter 25, and on both sides of the gutter 31 there are supply gutter 33 for receiving the cylindrical body a, which is an assembly of can lids, from the gutter 31 to the line. , 33' are provided.
The chute is provided with a stopper device 34, 3, respectively.
4' is provided to control the transfer of the cylindrical body to the supply troughs 33, 33' depending on the presence or absence of the cylindrical body in the supply troughs 33, 33'. Can lid supply conveyors 35, 35' to each line are provided on extensions of the supply troughs 33, 33'. Since the above sorting device is not the subject of the present invention, further detailed explanation will be omitted.

Effects The present invention has the following unique effects due to the above configuration.

(b) Since the packaging material of the cylindrical package is cut open at the bottom, paper powder will not fall onto the contents of the package or onto the equipment.

(b) The cylindrical package received in the receiving space is rotatably held from above by a vertically movable free roll and from the lateral direction by a free roll that is provided so as to protrude and move laterally. It is possible to reliably hold a cylindrical body of the same diameter.

(c) Since the cylindrical body from which the packaging material has been cut and removed is pushed laterally from the receiving space and discharged, even a long cylindrical body can be discharged in a short time, and the high speed of the device can be dramatically improved compared to conventional methods.

(d) Since the cylindrical package is laterally supplied to the packaging material incision and removal position and discharged laterally, the entire apparatus can be shortened.

(e) The cutting of the packaging material is done at once with a cutter having at least the length of the packaging body, and the packaging material is removed at that location, so speed can be increased.

(F) A rotary paddle that works together with the drive roll to roll up the packaging material and remove it downwards is provided so that it can be adjusted with respect to the drive roll, so even if the packaging material is thick, it can always be pinched with an appropriate pressure. , it is possible to prevent defective discharge of packaging materials.

(g) The function of one driving roll to receive the package;
The function of rotating the packaging body to apply tension to the packaging material to give it slack; the function of removing the packaging material;
Since it provides four functions, including the function of guiding the package material to the discharge gutter after removing the package material, the configuration can be extremely simplified.

[Brief explanation of drawings]

The drawings show an embodiment of the apparatus for cutting and removing packaging materials for cylindrical packaging bodies according to the present invention, in which FIG. 1 is a plan view, FIG. 2 is a front view, and FIG. 3 is a view taken from FIG. 1 in the direction of the arrows. It is. 1: Supply conveyor, 2: Conveyor, 3: Cross feed cylinder, 4: Pusher body, 5: Guide rod, 6:
Machine frame, 7: Guide, 10: Drive roll, 11: Motor, 12: Free roll, 15: Knife holder, 16: Engagement member, 17: Knife, 18: Rotating paddle (removal means), 19: Spring, 20 :
Bracket, 22: Pair of vertically movable free rolls, 25: Discharge gutter, 26: Stopper, 27:
Transfer plate, 30: Sorting device, 31: Sorting gutter.

Claims (1)

[Scope of Claims] 1. A cylindrical package receiving space is defined by a rotationally driven drive roll, a free roll provided so as to be protrusively movable in the lateral direction, and a free roll that is movable vertically, and the receiving space A cutter having at least the length of the package is provided at the lower part of the cylindrical package so as to be located near the outer periphery of the cylindrical package, and the cutter has at least the length of the package for simultaneously cutting the entire width of the package material. A packaging material cutting and removing device for a cylindrical packaging body, characterized in that a rotary paddle that winds up the packaging material and removes it downward is provided so as to be adjustable with respect to the drive roll. 2. A cylindrical package receiving space is defined by a rotationally driven driving roll, a free roll provided to be protruding and movable in the lateral direction, and a free roll that is vertically movable. A cutter having at least the length of the package is provided so as to be located near the outer periphery of the package and simultaneously cuts the entire length of the package, and is positioned below the cutter in cooperation with the drive roll to wind up the package and cut the package downward. A removing means is provided for removing the packaging material, and the cylindrical body having the packaging material cut and removed parallel to the side of the driving roll is received and discharged on the opposite side of the free roll provided so as to be able to protrude and move in the lateral direction. A discharge gutter is provided, and the cylindrical body from which the packaging material has been incised and removed is pushed laterally by the free roll provided so as to protrude and move in the transverse direction, and is transferred from the receiving space to the discharge gutter. Packaging material cutting and removal device for cylindrical packaging.