JPS5849231B2 - Tobacco - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a monitoring device for twisting machines in the tobacco manufacturing industry, which comprises a cutting device for separating the individual products from the twisted product and a feeding device for the products with fixed guides. The products are arranged in between and guided by them to be sent in line to a feeding device, said monitoring device comprising a light source and a light receiver.

The present invention relates to a twisting machine for producing cigarettes, small cigars, leaf tobacco and filter tubes.

Said monitoring device serves to control the ordered functioning of the twisting machine while monitoring the presence or absence of product or for example detecting the passage of the first tobacco and controlling the filter feed to a subsequent filter installation machine. This helps control the speed of subsequent work.

Disturbances in the monitoring device are usually caused by the light transmitter and/or receiver becoming dirty due to dust (tobacco debris) falling during production and thus light being absorbed.

The present invention is primarily concerned with reducing the disturbances of photoelectric monitoring devices mentioned in the introduction due to contamination.

According to the invention, this problem can be solved by having a guide fixed in the area of the monitoring device cut out of the transparent material and arranging the light source and receiver appropriately so that the light beam passes through the transparent material on its path from the light source to the receiver. This is solved by

Said transparent guide part can be made from glass, acrylic glass or other transparent plastics.

It is effective to insert a piece of material corresponding to the gap in the guide and, if necessary, to grind and polish it together with the guide.

During production, it is kept clean and smooth by the product sliding on the guide.

In various situations, it is sufficient to simply protect the light source or receiver from dust or keep it free from dust.

In this case, according to one embodiment of the invention, the light source and the receiver are arranged on different sides of the transparent material.

However, maximum operational reliability is achieved if both the light source and the receiver are kept clean.

This is achieved according to another embodiment of the invention by placing the light source and the receiver on the opposite side of the transparent material guiding the product, so that the product reflects the light beam to the receiver.

In FIG. 1, the distributor 1 makes the flow of tobacco by dropping the tobacco in the tobacco groove 2 onto the tobacco belt 3, which slides on the perforated groove bottom and the tobacco below the groove bottom. A suction chamber is arranged as a groove support.

The wheel 6 is provided around its periphery with a U-shaped groove with a hole in the bottom, which groove takes in the area of the feed path as a vacuum, and which receives the flow of tobacco from the tobacco belt 3.

The equalizer 7 removes excess tobacco from the top of the round wheel 6 and shapes the tobacco strands 8.

A draft-operated strand feeder 9 lifts the tobacco strand 8 from the groove of the shaping wheel 6 and places it on a synchronously guided tobacco paper tape 11, which is pulled out from the bobbin 12 and guided by a pusher 13. It is fed onto a drive or shaped belt 14.

The forming pellet 14 transports the tobacco strands 8 and the tobacco paper tape 11 through a forming tool 16 where the tobacco paper tape 11 is wrapped around the tobacco strands so that the edges protrude.

A glue device 17 coats this edge with a coating, and a seam plate 18 dries the adhesive edge.

The tobacco strands 19 thus shaped are cut by a cutting device 21.
The tobacco strands 19 are cut into individual tobacco 20 by means of a cutting device 21 in the form of a strand 19 , in which case the tobacco strands 19 are supported by a strand guide 22 .

Tobacco 20 is introduced into a generator in the form of a discharge cylinder 26 by means of an accelerator 23 on a guide in the form of a prismatic track 24 .

A photoelectric monitor 27 monitors the tobacco strands 19.

This activates the twist thickness measuring device after the arrival of the twist and stops the machine if no tobacco twist is present.

A monitoring device in the form of a photoelectric sensor 29 switches on the start of the machine and delays the blower nozzle 31, and also delays and starts the work machine, not shown, which switches on afterwards if it senses the arrival of the first cigarette. do.

The photoelectric sensor 29 has hitherto been formed as a simple reflection limiter, as shown in FIG. 1, and placed directly above or beside the tobacco strand or tobacco trajectory of motion.

In this case 29 is left unprotected and exposed to contamination due to the tobacco dust that comes up during cigarette manufacturing.

In Figures 2 and 3 the arrangement of photoelectric monitoring devices is shown, in which the risk of contamination is reduced or completely eliminated.

In the embodiment according to FIG. 2, the prismatic line 24 is made of a transparent material, for example glass, acrylic glass or other transparent plastic.
It shows the implementation in the form of.

A dust-protected light source 34 is placed below the fitting 33, and facing this, on the other side of the fitting 33, a light receiver 36 is arranged.

The receiver 36 is part of a switch arrangement 37, which for example can be connected to a blower nozzle 31 (see FIG. 1) and/or
Control the filter installation machine which then closes.

However, the arrangement 37 of the actuation control device can be modified in such a way that the twisting machine is stopped when the tobacco does not arrive, for example due to twisting debris.

Depending on the conditions of use, the light source 34 can be arranged above the prism line 24 and the dust-protected light receiver 36 can be arranged below the fitting 33.

Already a greater advantage is obtained by this measure compared to conventional implementations, since the fitted parts, over which the tobacco 20 continuously slides, are cleaned by the tobacco powder and thus a self-cleaning effect occurs.

The reason for this is that parts of the photoelectric monitoring device are completely protected from dust, while other parts located above the trajectory of the cigarette are exposed to relatively little dust.

The embodiment according to FIG. 3 is optimal for reliability of operation, and parts corresponding to those of FIG. 2 and shown with the reference symbol plus 100 are not newly described.

In this embodiment, both the light source 134 and the light receiver 136 are placed below the fitting part 133, protected from dust and as a reflection light limiter.

In the arrangement of the light source 134 and the receiver 136, of course the double refraction of the light rays on their entry into the recessed part 133 or on their exit therefrom must be taken into account.

In the embodiment according to FIG. 2, the absence of a cigarette is detected by the sufficiency of the light beam to the receiver, whereas in this embodiment the absence of a cigarette 120 is detected by the absence of reflected light.

The embodiments of the present invention are as follows.

(1) In the monitoring device according to the claims, the light source 3
4 and a light receiver 36 are placed on different sides of a transparent material 33.

(2) In the monitoring device according to the claims, the product 1
A light source 134 and a light receiver 136 are placed on the side of the transparent material 133 opposite to the side that guides the product 120.
A device that reflects the light rays coming from 4 toward the receiver.

[Brief explanation of the drawings] Figure 1 is a general diagram of a tobacco twisting machine, and Figure 2 is a general diagram of a tobacco twisting machine.
FIG. 3 is a diagram showing a cross section through the prism groove of the tobacco twisting machine shown in the figure together with a monitoring device according to the present invention, and FIG. 3 is a diagram showing a variant of the arrangement of the monitoring device according to FIG. 33...Material, 34...Light source, 36.
...Receiver.

Claims (1)

[Claims] 1. Monitoring in twisting machines of the tobacco manufacturing industry, consisting of a light source and a light receiving device, arranged between a cutting device for separating the individual products from the twisted product and a feeding device for the products with fixed guides. In the device, a monitoring device 34,
36 ; 1 34 , 1 36 The fixed guides are fitted with recessed parts 33 , made of transparent material.
1 33 or so, the light source 34, 134 and the light receiver 36,
Reference numeral 136 denotes a device arranged so that the light beam passes through the transparent material on the path from the light source to the light receiver.