DE2232161C3 - Cleaning device for strip material - Google Patents

Description

whereby

45

/ == the coefficient of sliding friction of the to be cleaned

Materials (6) on the support roller (5), F = the coefficient of friction of the cleaning tool (3, 4, 20, 21, 22, 23) on the one to be cleaned.

Material (6),

B = the width of the material to be cleaned (6).

55

The invention relates to a cleaning device door strip material at right angles to the belt whose feed direction tu lying rotationally drivable rollers with cleaning tools and below the belt rotatably driven support rollers, whose axes of rotation are likewise arranged perpendicular to the tape feed direction, wherein the drives of both types of rolls adjustable independently and reversibly the Reinigungsirollen are.

From the DT-PS 683 610 is a cleaning device of the type mentioned is known in which several pairs of brush rollers and pairs of driving rollers are arranged one behind the other in the working direction of the strip material. While the pair of driving rollers can only rotate in the working direction of the strip material, the direction of rotation of the brushes can be rolled couples change direction. With this reversal possible speed is avoided that low tape material Thickness at the entry into the brush roller is claimed to be buckling. The well-known arrangement has the disadvantage that a pair of driving rollers must be arranged in front of and behind each pair of brushes to ensure proper guidance of the strip material zi. This results in the pictured! Example alone four brush rollers and 8 drive rollers The roller pairs and drive roller pairs have aiii a very specific fixed position. The minimum length of the strip material to be processed is determined by the Axial spacing of the pairs of driving rollers established.

The invention is based on the object, in a cleaning device for strip material, the number to reduce the brush rollers and drive rollers and at the same time reduce the length of the area to be cleaned To be able to change the band material.

According to the invention, this object is achieved in that at least one cleaning roller and one support roller are mounted in a common machine stand which is displaceable in the longitudinal direction of the belt.

The advantages that can be achieved with the invention are in particular that the material to be cleaned during its forced displacement in the working direction its buckling resistance on the section between the parallel shafts that carry the cleaning tools. This is a continuous high-quality cleaning of strip material and sheet material of any thickness guaranteed. When cleaning material with dimensionally stable length, it is advisable to use at least one of the Parallel shafts carrying cleaning tools and the supporting roller assigned to it accordingly are displaceable that an adjustable displacement in the direction of movement of the material to be cleaned is feasible.

The storage of a cleaning roller and a further roller in a common machine frame is known from US-PS 3245 102 per se. However, the further role does not have the function here a carrier roller, but only serves to press the tape material against the cleaning roller. the Rolls are arranged in two successive machine stands so that in one machine stand the cleaning roller works above the strip material and cleans the top of the material, while in the other machine frame the cleaning rollers are arranged below the strip material and clean the underside. For the support and movement of the tape material through the Roller sets must have additional fixture parts.

Advantageous further developments of the invention are characterized in the subclaims.

The drawing serves to explain the invention in more detail. It shows in a schematic representation

F i g. I a cleaning device for strip material with two rotating cleaning tools supporting parallel waves (top view),

F i g. 2 shows a section along line H-II of FIG. 1,

F i g. 3 a cleaning device for strip material, in the invention a wave and the

corresponding idler roller an adjustable displacement in the direction of movement of the material to be cleaned (front view, that to cleaning material is shown in section),

F i g. 4 shows a variant of the cleaning device for strip material where each shaft has cleaning tools with opposite directions of rotation carries in plan view with partial section, and

F i g. 5 shows this device in a front view, the material to be cleaned being shown in section.

In the cleaning device according to the invention, the strip material is forcibly moved between rotating cleaning tools 3 and 4, which are placed on parallel lines 1 and 2, and support rollers 5, with each support roller facing a parallel shaft. The cleaning tools used are rotating cutting tools with radially arranged pieces of wire which are connected to one another at one end and pressed against one another at their side surfaces and form a rotational surface-shaped cut surface with their opposite free ends, with a ratio of the end faces of the free ends to the total cut surface of 0.2 up to 0.9. All support rollers S are driven and rotate according to arrow A, which indicates the direction of displacement of the material 6 to be cleaned, together with half of the total number of parallel shafts carrying the cleaning tools, while the other half of the total number of these shafts rotates in the opposite direction according to arrow C. .

The shafts 1 and 2 run in bearings 7 which are mounted in machine frames 8. The conveyor rollers 5 run in bearings 9, which sit on a cross member 10. This is in guides 11 by a Drive 12 moved for vertical adjustment of the support rollers 5. The vertical adjustment option the support roller 5 is required to transfer the material 6 to be cleaned to the corresponding cleaning tool to press

In the example under consideration, each parallel shaft that carries a cleaning tool has an individual drive, which is set in rotation by an electric motor 13. Each conveyor roller 5 has its own individual drive, which is set in rotation by an electric motor 14. The separate drives allow the Regulate the speed of the cleaning tool and its support roller independently.

In the case of the in FIG. 4 and 5 carry the parallel shafts 1 and 2 cleaning tools 20, 21, 22, 23, the opposite rotating have sense and are arranged relative to one another in such a way that the linear speed of the material to be cleaned 6 is the same in its points of contact with the support roller 5. The cleaning tools 20 are rigidly attached to the shaft 1 and rotate together with her, while the Tools 21 sit freely in their bearings 24 on the shaft 2 and are in the displacement of the to be cleaned Rotate material 6 in the opposite direction.

The cleaning tools 22 sit freely in their bearings 24 on the shaft 1 and rotate in the direction of arrow A of the displacement of the material 6, while the cleaning tools 23 sit rigidly on the shaft 2 and move together with it, ie in the direction of arrow A, turn. ^ _

The total width of the tools 20 and 21, which rotate in the same direction, namely in the direction of arrow C , should be at least equal to the total width Vb _{2 of} the tools 22 and 23, which rotate in the opposite direction, and turn in the direction of arrow A.

On the shafts 1 and 2, the cleaning tools 20 and 21, 22 and 23 are arranged so that their Width alternately and consecutively covers the total width B of the material 6 to be cleaned.

In the example under consideration, the cleaning tools 22 and 21, which are free on the shafts 1 and 2 are seated, set in rotation by the electric motor 13 (FIG. 5), the rotational movement of which on the drive shaft of the reduction gear 15 and further from the output shaft of this gear via a kinematic gear train containing two pairs of bevel gears 25 and 26, to the above Transfer cleaning tools. Here, the drive wheel is rigid on the in each bevel gear pair Shaft 1 or 2 fixed, while the output gear is rigidly connected to the drive gear of the pair of wheels 26 is. The output gear of the bevel gear pair 26 is rigidly mounted on an intermediate shaft 27, which runs in bearings 28, which on the trestles 8 (Fig. 4) the device sit.

The intermediate shaft 27 (Fig. 5) is with the cleaning tools 21 and 22, which sit freely on shaft 2 and 1, respectively, with the aid of a chain drive 29 tied together.

The device according to the invention works as follows: The electric motors 13 of the drives, through which the shafts 1 and 2 rotate are offset, and the electric motors 14 of the drives, through which the support rollers 5 rotate are switched on.

The rotary movement of the electric motor 13 is transmitted to the drive shaft of a reduction gear 15 and further from the drive shaft of this gear via a known kinematic connection to the corresponding shafts 1 and 2 carrying the cleaning tools 3 and 4. Here, the shaft 1 rotates in the direction of the arrow C opposite to the displacement of the strip material 6, while the shaft 2 rotates in the direction of the arrow A of the displacement of the strip material 6.

The rotary movement of the electric motor 14 is transmitted to the drive shaft of a reduction gear 16 and further from the output shaft of this gear via a known kinematic connection to the corresponding support rollers 5, which rotate in the direction of arrow A of the displacement of the strip material 6.

The strip material 6 is displaced in the direction of arrow A by the first support roller. At the moment when the leading edge of the strip material 6 reaches the second support roller 5, drives 12 are switched on for vertical adjustment of the support rollers 5, and the strip material 6 is pressed against the corresponding cleaning tools 3 and 4 by these support rollers 5. Thanks to such a constructive solution, the material to be cleaned 6, which is forcibly displaced by the driven support tubes 5, retains its buckling resistance on the section between the parallel shafts 1 and 2, whereby high-quality and uninterrupted cleaning of both strip and heavy sheet material as well as thin sheet material any thickness (0.2 ... 40 mm) is guaranteed.

The device according to the invention can also operate as follows.

The strip material 6 is displaced by the first support roller 5 according to the arrow A. At the moment when the leading edge of the strip material 6 reaches the second support roller 5, the drives 12 are switched on for vertical adjustment of the two support rollers 5, and the strip material 6 is pressed against the corresponding cleaning tools 3 and 4 by these support rollers 5. A section of the strip material 6 is cleaned, the length of which is equal to twice the distance between the axes of the shafts 1 and 2. Thereafter, the linear speed of the cleaning tool 4 is gradually reduced to the displacement speed of the material 6, whereby the tool 4 now works as a pulling roller, ie at this moment the rotating tool moves the material to be cleaned together with its support roller. The remaining section of the strip material 6 is cleaned by the cleaning tool 3.

To clean material with dimensionally stable length, it is advantageous that at least one parallel shaft, for example the Parailelwelle 2 and its associated support roller 5 are mounted so that they can perform an adjustable displacement in the direction of arrow A of the movement of the material 6 to be cleaned . Such an adjustable displacement is made possible by the fact that the machine frame 8 carrying the bearings 7 of the shaft 2 and the cross member 10 carrying the bearings 9 of the support roller 5 are fastened on a movable plate 17. On this plate 17 there are drives by means of which the shaft 2 carrying the cleaning tool 4 and the corresponding support roller S are set in rotation.

The plate 17 is moved on a track 18 in the direction of arrow A with the aid of the drive set in motion by an electric motor 19. This construction increases the technological possibilities of the device. The adjustable displacement of the plate 17 in the direction of arrow A of the movement of the material 6 to be cleaned enables continuous cleaning of sheet metal material of different lengths.

An example of the embodiment of the invention characterized in claim 3 is given below:

Strip material 6 with the width B = 2000 mm is moved by the rotating tools 20, 22 (FIG. 4). which are placed on the shaft 1 and machined by the tools 21, 23 placed on the shaft 2.

The tools 20 and 21 have the width fc and rotate in the direction of the arrow C, while the tools 22 and 23 have the width h ₂ and rotate in the direction of the arrow A.

According to the invention, all tools 20, 21, 22, 23, 22, 21 and 20 alternately and consecutively cover the entire width B of the material 6 to be cleaned, ie

The total width V />, of all tools, which turn in the direction of the arrow Γ, is in the following Form written:

whereby

Z_b _lw = the total width of the tools that are in the direction of arrow C on the ~~

Turn shaft 1,
/ _b; ii \, - the Gesanitbrcite of the tools is that

in the direction of arrow C on the

Wave ?. turn.

The total width \ b _{2 of} the tools rotating in the direction of the arrow / 4 is written in the following form:

25th

= ß.

2Λ-

whereby

h _2i ,, = the total width of the tools rotating in the direction of arrow A on shaft 1,

_> _{? (} iii = the total width of the tools that rotate in the direction of arrow A on shaft 2.

The width B of the strip material 6 is partly covered by the width of the tools placed on the shaft 1 and partly by the width of the tools placed on the shaft 2, ie

B = B _m + B ₁ ,

i'll>

and

h _x , "

i (in

whereby

B ₀ , = the part of the width of the strip material 6 which is covered by the total width 2 ~ Am of ^the tools 20 and by the total width 2. ^ 2 (D of the tools 22. which are placed on the shaft 1,

β, ιΐι = the other part of the width of the strip material 6, which is covered by the total width Yp ₁ "" of the tools 21 and by the total width Yh _{2 m of} the tools 23, which are placed on the shaft 2.

It becomes ß _{(l |} = B ₁₁ = ~; B ₁ = B _n = 1000 mm and

the total width Yb ₁ ", of the tools 20 placed on shaft 1 and rotating in the same direction, greater than the total width Yh ₂₀ , of the tools 22 placed on shaft 1," rotating in the opposite direction, equal to the value, 2j><!) assumed, ie

60 where, 2 ~ Ao is the difference in the total widths of the tools 20, 22 placed on the shaft 1.
Here _{, Yb 0)} should, according to the invention, be smaller than

the total width of the tools, which can be ^worth 65 ' ¹ ^ o ⁼

i - B ₀ , ie

^whereby

Turn the direction of arrow C,

is the total width of the tools rotating in the direction of arrow A.

F = 0.75
/ = 0.15

0.15

B ₁₁ , = 1000 mm

<"0.75

■ 1000 = 200 mm.

1902

_We take the difference in the total widths ^ 2J ¹ O) ^ ^{er on} ^ ^ ^0Γ shaft I attached tools ZO, 22 the same

mm

Ib ₁₁₁ = "'^ * KKH) = 5 (M) mm.

Here is

F = 0.30
/ = 0.15
ß _{(1 |} = K) (X) mm

We take the difference in the total widths, 2 ^ b, ι, of the tools 20 placed on the shaft 1. 22 equals iTb ,,, = 480 mm aii ^ From the ratios (5) and (7) we determine 2J

- ιΣ'Ίιι-

101

'ki

F = 0.75
/ '= 0.15
ß, i "= 1000 mm

at

F ■■■ - 0.30
/ '= 0.15
O ₁₁₁ , = 1000 mm

From the ratios (6) and (8) we determine 2.Vri> ^and X ^ (H)

L _ "(1) 1 +) 2" (Ht

"I (II) ~" T '

1000 = 200 mm.

Ib ₁₁₁₁ = q '\ 1 ■ 1000 = 500 mm.

= 590 mm

After inserting the values we get:
- _ 1000 + 180
i- " ¹ « ¹ »~ 2

> b _{2 (1} , = 590-180 = 410 mm,

=, KXK) + 480 _. "

> b, _(l) = --y = 740 mm

Tb ₇₁₁₁ = 740-4HO = 260 mm.

Door Γ = 0.75
for F = 0.30

After inserting the values we get:

for F = 0.75

τ-, 1000 + 0 _cnn

) ⁼ '"■)' ⁼ J" * J mm

= 1000 - 500 = 500 mm

and the same for F = 0.30

i «ι«

= 500 mm
= 500 mm.

__We take (for shaft 2) the total width 2_h \ HD of the tools 21 placed on shaft 2 and rotating in one direction equal to T. ll

It follows that in the example under consideration with a total width Yb _{: (l) of} the tools 20 equal to 590 mm and a total width of 2_ ^ ιο) ^ ^er tools 22 total width T_b-, _{m of} the on the same shaft 2 equal to 410 mm, the are placed on der_Welle 1.

set, but rotating tools 23 in the opposite direction. d. H.

Tb = * \ h (8)

so that the difference in the total width .T_h, _w of tools 21 and 23 is zero.

Furthermore, we determine the value for wave 2 according to the invention

and with a total width

_{1 (! 1)}
G

of tools 21 to p

equal to 500 mm and with a total width Tb _{2 (M of} the tools 23 equal to 500 mm, which are placed on the shaft 2, the strip material 6 (at a given speed without slipping the same on the support roller) with a width of 2000 to 1640 mm; F = 0.75 and with a width of 2000 to 1400 mrc at F = 0.30 can be cleaned without changing the width of the cleaning tools on shafts 1 and 2.

For this purpose 2 sheets of drawings

509648/218

Claims (3)

Patent claims: I. Cleaning device for strip material with over the strip at right angles to its direction of advance lying, rotatable rollers with cleaning tools and lying under the belt rotatable support rollers, the axes of rotation of which are also arranged at right angles to the tape feed direction, the drives Both types of rollers can be regulated independently of one another and that of the cleaning rollers is reversible «Ind, characterized in that at least One cleaning roller (3 or 4) and one carrying roller (5) each in a common machine stand are gslagert, which is displaceable in the longitudinal direction of the belt. 2 Device according to claim 1, characterized in that each shaft (1, 2) carries rotating cleaning tools (20, 21, 22, 23) which * ° have opposite directions of rotation and are arranged relative to one another so that the linear speed of the Materials (6) is the same in its points of contact with the support roller (5), the total width (^ b ₁ ) of the tools (20, 21) rotating in one direction at least equal to the total width (]>/> ₂ ) in opposite direction rotating tools (22, 23) and all tools (20,21,22,23) on the parallel shafts (1. 2) are arranged in such a way that their width alternately and successively the entire width [B) of the to cleaning material (6) covered. 3. Device according to claim 2, characterized in that if the total width (^ _Μ of the tools rotating in one direction (20, 21) is greater than the total width C ^ b ₂ ) of the tools rotating in the opposite direction (22, 23) is, the difference in the total widths is smaller than the value determined from the ratio below