JPH0779670B2 - Machine for producing continuous rods of smoking material - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a machine for producing at least one continuous rod of smoking material.

In particular, the invention relates to a machine for producing at least one continuous cigarette which is subsequently cut transversely into cigarettes. Therefore, in the following description,
By way of example only, a machine for producing at least one continuous rod of tobacco will be described.

[0003]

SUMMARY OF THE INVENTION It is an object of the invention to control the diameter of a rod in a simple, efficient and automatic manner and to keep it constant and equal to a predetermined value. To provide a machine of the above type capable of:

[0004]

According to the present invention, there is provided a machine for producing at least one continuous rod of smoking material of a given diameter, the machine comprising at least one.
A shaping beam having two longitudinal grooves and a folding plate engaging with the beam and positioned to face the groove, the plate being arranged at a predetermined distance from the beam. In the continuous rod manufacturing machine, which defines a passage for forming a continuous rod together with the means for detecting the diameter, and the signal emitted by the detection means inserted between the beam and the plate. And an adjusting device for adjusting the distance in response.

According to a preferred embodiment of the above machine, hinged means are provided between the beam and the plate to allow the plate to rotate with respect to the beam about an axis parallel to the groove and the adjusting device to And at least one plate support point, the adjustable point being located at a predetermined distance from the axis.

The axis and the support point are preferably located on either side of the groove.

More preferably, the adjusting device comprises a cam rotating relative to the beam about an axis fixed with respect to the beam, said supporting means being associated with said cam and moving by said cam in a direction perpendicular to the beam. Equipped with possible tappets.

[0008]

Non-limiting embodiments of the invention are described below by way of example with reference to the accompanying drawings.

In FIG. 1, the number 1 indicates a machine for producing a cigarette part (not shown), which machine comprises two known feeding units 3 and 4 and two paper strips 5 and 2.
The two streams of cigarettes 6 are each fed to simultaneously form two consecutive cigarette rods 7 (FIGS. 2 and 3). The machine 1 further comprises a known cutting device 8 located downstream of the unit 2 in the direction of travel of the rod 7 so that the rod 7 can be cut into parts of a given length (not shown). There is.

As shown in FIGS. 2 and 3, the unit 2
Comprises a shaped beam 10 extending parallel to the direction 9 and having a pair of substantially semi-circular cross-section grooves 11 adapted to receive each strip 5 of paper and each stream of cigarettes 6. The unit 2 further comprises a pair of known folding elements 1
2, the folding element 12 extending in opposition to each groove 11 and each laterally spiral-shaped carrying-in part 13 and on each side facing each groove 11 together with each groove 11 each rod-shaped body. A groove 14 of curved cross section, which defines an end portion 15 of a passage 16 for forming 7.

The width of the end portion 15 of the passage 16 and the corresponding diameter of each rod 7 is automatically adjusted by an adjusting unit 17 with an adjusting device 18 for each rod 7. Plate 1 common to two adjusting devices 18
9 working together.

A plate 19 supports the beam 10 and also a central longitudinal seat 20 which engages the bottom portion of the beam 10.
have. From both longitudinal ends of the plate 19, two pairs of transverse appendages 21 projecting upwards, which extend at right angles to the plate 19 on each side of the beam 10 and define each fork 22, respectively. A pin 23 parallel to the direction 9 hinges each fork 22 to the longitudinal edge of each elongated body 24, which fork 22 is spaced substantially 90 ° around the pin 23 and by a spherical locking device 25. It is selectively fixed in two different angular positions.

At the end opposite the end close to the plate 19, each body 24 comprises three spaced attachments 26 parallel to the attachment 21 and defining a fork device 27. A longitudinal edge of the plate 29 is hinged to the plate 2 by a pin 28 parallel to the pin 23.
Reference numeral 9 denotes a spring 3 extending from each main body 24 above the beam 10 and stretched between the plate 29 and each main body 24.
It is pulled toward the beam 10 by 0. Beam 1
On the side facing 0, each plate 29 has a seat 31 which is detachably connected to the plate 29 and accommodates each element 12 which defines a folding plate 32 together with the plate 29.

As shown in FIG. 2, the adjusting devices 18 are spaced from each other along the beam 10 and each is rotatably supported by two bushings 35 integral with the plate 19 at right angles to the direction 9. It comprises a cam 33 (FIG. 3) mounted on a shaft 34.

Each cam 33 is constituted by a cylindrical rod 37 and a tappet roller 38 which contacts the outer surface of the cam 33 and is connected to one end of the rod 37 and which rotates with respect to the rod 37 about an axis parallel to the shaft 34. Cooperate with each compartmented tappet element 36. Each rod 37 is shaft 3
4 at right angles to each other and axially slidably engages with each sleeve 39 mounted through the plate 19 and the beam 10 and inside the hole 40 formed between the grooves 11. At the end opposite the side where the rollers 38 are provided, each rod 37 cooperates with each pin 41 to manually adjust the null position of each plate 32 around each pin 28. Each pin 41
Are formed on the end portions 43 of each plate 29 located on the opposite side of each groove 14 relative to the pins 28 and aligned with the corresponding end portion 43 of the other plate 29 in a direction parallel to the direction 9. It is screwed into the threaded hole 42 and is held in contact with each tappet element 36 by each spring 30.

Each device 18 also includes a device 44 for manually lifting each plate 32. Each device 44 comprises an L-shaped lever 45 integral with each elongated body 24 and having one end proximate to each accessory 26, the knob 46 being attached to the free end of the lever 45. The device 44 includes each elongated body 2
4 can be rotated between the two positions, so that each plate 32 is
It can rotate between a lowered operating position which cooperates with 0 to define the passage and an elevated position in which the plate 32 is located away from the beam 10.

Referring again to FIG. 3, each shaft 34 is angularly coupled to the output shaft of each electric step motor 47 controlled by each controller 48, which controls the diameter of rod 7. Preferably Metrologie Solex M .; S. E. "SOLEX 48931 Diameter Gauge" manufactured by
The control signals for the electric motor 47 are intended to be emitted as a function of the signals emitted by the respective devices 49 of the type marketed as.

As shown in FIG. 1, each control device 48
Is the first input signal from the detection device 49 and each rod-shaped body 7.
And a second input signal from a known emitter 51 which produces a reference signal proportional to the required diameter of the comparison unit 50. The comparison unit 50 determines the difference between these two input signals in a known manner, and if it exceeds a given limit value, it outputs a usable signal of a value and sign proportional to said difference to the known unit. 52 to control each electric motor 47.

Upon receipt of the enable signal, unit 52 operates each motor 47 in one or the other direction in a known manner, until each pin 28 is deactivated until the enable signal disappears.
It is possible to adjust the angular position of each plate 32 around, and consequently the diameter of each passage 16 and each rod 7, so that the diameter of each rod 7 is always equal to a predetermined value.

[Brief description of drawings]

FIG. 1 is a block diagram of a unit for manufacturing a cigarette portion.

2 is a partial plan view of a detail of the unit of FIG. 1. FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cigarette cigarette making machine 7 ... Cigarette tobacco rod 10 ... Forming beam 11 ... Groove 16 ... Passage 17 ... Adjusting unit 19 ... Plate 27 ... Fork device 32 ... Folding plate 33 ... Cam 36 ... Tappet element 41 ... Pin 48 ... Control Device 49 ... Detecting device 50 ... Comparison unit 52 ... Control unit

Claims (7)

[Claims] 1. A machine (1) for producing at least one continuous rod (7) of smoking material of a given diameter, comprising a shaped beam (10) having at least one longitudinal groove (11). A folding plate (32) which engages with the beam (10) and faces the groove (11)
The plate (32) is disposed at a predetermined distance from the beam (10) to define a passage (16) for forming a continuous rod (7) with the groove (11). In the continuous rod-shaped manufacturing machine, the means (49) for detecting the diameter, the beam (10) and the plate (3) are used.
An adjusting device (1) inserted between the adjusting device (1) and the distance adjusting device (2) according to a signal emitted by the detecting means (49)
7) The manufacturing machine for a continuous rod-shaped body of smoking material, comprising: 2. Hinging means (27) are provided between the beam (10) and the plate (32), the plate (32) being parallel to the beam (10) with respect to the axis (2).
8) to allow rotation about the adjusting device (1
7) comprises adjustable support means (36) inserted between the beam (10) and at least one support point of the plate (32), said support point being a predetermined distance from said axis (28). The machine of claim 1, wherein the machine is located at. 3. Machine according to claim 2, characterized in that said axis (28) and said support point are located on either side of said groove (11). 4. The adjusting device (17) comprises a cam (33) which rotates about an axis fixed to the beam (10), the supporting means (36) co-operating with the cam (33). 4. Machine according to claim 3, characterized in that it comprises a tappet element (36) which acts and is moved by the cam (33) in a direction perpendicular to the beam (10). 5. Resilient means (30) are provided for holding said tappet element (36) between the plate (32) and the cam (33) in constant compression. The machine according to claim 4. 6. A reference in which a motor (47) is angularly connected integrally with the cam (33) and the adjusting device (17) produces a reference signal proportional to the given diameter of the rod (7). Control means (48) including means (51), comparison means for comparing the reference value with the value measured by the detection means (49), and in response to the signal emitted by the comparison means (50) 6. Machine according to claim 4 or 5, characterized in that it comprises a control unit (52) for issuing control signals for the electric motor (47). 7. The plate (32) is a plate (3).
2) has an axially adjustable screw pin (41) attached to the beam (10) in a direction substantially perpendicular to the beam (10), one end of which defines the support point. Machine according to any one of claims 2 to 6, characterized in that