JPS5823293B2 - Device to prevent product from rolling back - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to equipment used for packaging products, such as packets of cigarettes or the like, and more particularly for conveying products from one operating stage to another. The present invention relates to a device for preventing a product from moving backwards when changing direction during transportation.

The movement of the cigarette packets from the packaging line to a surface packaging machine of known type, for example a cellophane sealing machine, takes place on a line which usually consists of belt conveyors arranged to suit the arrangement of the machines.

The peltocolumn conveyor is arranged in a suitable space in the production area where the processing machinery is installed, in the position in which the cigarette packets leave the packaging machine and in the position that the packets assume when they enter the surface packaging machine.

In relation to the position at which the packet leaves the packaging machine and the position that the packet assumes when entering the surface packaging machine, it is often necessary for the transport conveyor belt to be arranged to change position after the packet leaves the packaging machine.

For example, they are arranged so as to change the longitudinal direction, in other words, the direction of the largest dimension, that is, the axial direction of the cigarette packet.

- As a result, for example, by turning the packet 90° relative to its previous position, i.e. by placing it in the direction of its smallest dimension, in other words perpendicular to the axis of the cigarettes, the packet can be adapted to enter the surface packaging machine. facing perpendicular to.

・The belt conveyor is arranged like this, and 90
When there is a change in direction, the following often occurs due to the increased speed at which the processing machine operates.

That is, at the point where a packet of cigarettes is displaced by 900 degrees, the packet collides with the side wall defining the conveyance path where the displacement occurs, bounces back toward the upstream conveyor section, and the arrival of a subsequent packet causes the bounced packet to is pushed by other parcels into a position that straddles the upstream and downstream conveyor compartments.

This immobilizes the parcel in question relative to the side wall, thereby narrowing the path through which the parcel would otherwise have passed.

This narrowed passage must be handled manually, and sometimes it is even necessary to stop the processing machine.

As a result, the entire equipment is affected, leading to a considerable reduction in production.

The object of the present invention is to solve the above-mentioned problem of relapse by means of the following device.

That is, the device eliminates the possibility of packet bouncing where a change of direction occurs and the package arrives, and conveys the package to the correct position relative to the infeed equipment of the subsequent machine.

According to the invention, a product, in particular a tobacco packet or the like, can be manufactured by connecting two machines for processing the product.

A device is installed to prevent backtracking during a change of direction on a connecting conveyor line, said conveyor line comprising at least two conveyor sections arranged at an angle to each other and at least one conveyor section. lateral walls disposed along a downstream conveyor section in the direction of product movement and an upstream conveyor section across this downstream conveyor section, said device for preventing backtracking of the package; At least one wrapper mounted on a horizontal shaft for rotation in a direction that inhibits movement in the opposite direction.

contact rollers, said contact rollers being spaced from said upstream conveyor section at a distance longer than, but less than twice the dimension of, the product in a direction parallel to the direction of conveyance of said product on said upstream conveyor section; It is characterized by being located upward and away from the healed side wall.

To provide a device that prevents a product from returning.

Embodiments of the invention will now be described with reference to the drawing, which is a perspective view from above of an anti-return device.

The embodiments shown and described are not the only embodiments of the invention, but are presented as non-limiting examples.

As shown, a line for transporting cigarette packets P is arranged to connect the two locations.

One of the locations is that of a packaging line (not shown) and the other is that of a subsequent machine, such as a cellophane sealing machine.

The packaging line is connected to the top right of the figure by having a gentle curve in the conveyor line, and the following cellophane sealing machine is connected by moving the last section of the conveyor line by 90 degrees and then connecting it in a straight line. be done.

The section of the conveyor line up to the 90° angular displacement section consists in the illustrated example of a number of conveyor belt sections 1 and 2.

Each conveyor belt section 1, 2 is passed over rollers or pulleys 3, 4 and 5, 6, respectively.

Their drive may be introduced from an independent power source or from a packaging line or cellophane sealing machine.

The conveying platform formed by the conveyor belts 1 and 2 is completed by an intermediate plate 1', the direction in which said belt conveyor moves for conveying the packets of cigarettes is indicated by the arrow f.

The sections of the line displaced by 90° are constituted by flat spaced strips 7 and 8.

A conveyor chain 9 of a well-known type is connected between the belt-shaped parts 7 and 80.
moves.

This conveyor chain 9 is driven from an independent power source or from a packaging line or cellophane sealing machine.

The chain 9 is then provided with vanes 10 for conveying the cigarette packets P in the direction of arrow f' towards the cellophane sealing machine.

Furthermore, side walls 11 and 12 are provided along the conveying section.

The former side wall 11 is in the section before the 90° angular displacement,
The latter side walls 12 are then provided along the section after that displacement, these side walls together with the respective conveying means (conveyor belt and conveyor chain) forming a virtual groove in which the packages P slide. form a path.

Immediately upstream of the point where the direction of the conveying line changes by 90°, there is a support 13 which has four arms 14, each having an intermediate position relative to the horizontal axis. It is pivoted so that it swings.

A roller 15 is installed at the free end of each arm near the 90° displacement.

The roller 15 can only rotate in one direction, ie clockwise, around the horizontal spindle.

Each roller 15 is a Boulder-Warner Staver, commercially known by the reference number 12610.
rg-Warner-3tiber) type bearing or freewheel.

The free end of each arm 14 is under pressure exerted by a spring 16.

This serves to swing the roller 15 towards the package.

This oscillating movement is caused by the adjusting screw 1 acting on the other end on the member 14.
7.

The distance between the last or downstream roller 15 and the side wall 11 facing the roller 15 is greater than the dimension of the package in the conveying direction, but less than twice that dimension.

Cigarette packets P arriving one after another from the packaging line are placed on the conveyor belt 1 with the largest dimension facing the feeding direction.
and 2, and as it passes under rollers 15, a slight pressure is applied to the package.

Since the roller 15 only rotates clockwise, it exerts a braking effect on the movement of the package.

As a result, the parcels arrive between the side walls 12 and the vanes 100 successively mounted on the conveyor chain 9 at a gradual deceleration.

The conveyor chain 9 then causes the tobacco packets to be displaced by 90° with respect to the previous position occupied by the tobacco packets when they leave the packaging line in the transport line sections 7, 8.
, 9, 12 and is transported to the entry point of the surface packaging machine or cellophane sealing machine.

It will be clear that as a result of the effective pressure exerted on the packet P by the rollers 15, any strong rebound of the packet against the side wall 12 is eliminated.

Furthermore, since the roller 15 rotates in only one direction, the roller cannot rotate counterclockwise, so that when the cigarette packet tries to return, it is locked in that position, so that the packet does not return. It's impossible.

In this way the packet P is placed on the conveyor chain 9 in the correct position to be fed into the surface wrapping machine or cellophane sealing machine.
K maru on top.

[Brief explanation of drawings]

The figure is a perspective view from above of a device according to the invention. P...°... Cigarette wrapper, 1.2... Conveyor belt section, 11... Plate, 3, 4, 5
, 6...Roller or pulley, 7, 8...
・Strip part, 9...Conveyor chain, 10...
...Blade, 11,12...Side wall, 13.
... Support body, 14 ... Arm-shaped member, 15.
...Roller, 16...Spring, 17...
...adjustment screw.

Claims (1)

Claims: 1. A device for preventing the product from turning back when changing direction on a conveying line connecting two machines for processing products, in particular cigarette packets or the like, comprising:
Said conveying line consists of at least two conveyor sections arranged at an angle to each other and at least one side wall, said side wall comprising a downstream conveyor section in the direction of movement of the products and an upstream conveyor section across this conveyor section. disposed transversely along the conveyor section of the conveyor section, said device comprising a plurality of wrap contact rollers disposed about a horizontal spindle rotatable only in a direction to control reverse movement of the product;
side walls along said upstream conveyor section at intervals greater than, but less than twice the dimension of, the product in a direction parallel to the direction in which one of said rollers is conveyed on said upstream conveyor section; A device for preventing a product from rolling back, characterized in that the device is located upwardly away from the product. 2. The roller is elastically loaded so as to approach the package at all times, and adjustment means are provided to determine the maximum amount of movement of the roller towards the package. equipment. 3. Said roller is attached to one end of an arm pivoted about a horizontal axis in the middle, and while the adjusting means acts on the other end of said arm, the roller end of said arm is placed in a direction that wraps around the roller. 3. The device according to claim 2, wherein the device is elastically loaded so as to be pushed forward.