Method for operating a device on or in a spinning machine and spinning machine operated thereby

Abstract

The device on or in the spinning machine (1) has a plurality of cleaning sections (60) each with an associated opening roller (61). The device is designed to transport and in this case separate impurity material in at least one corresponding transport direction along the axis of rotation of the associated opening roller (61) when the associated opening roller (61) is rotated in a predetermined direction. There is one transfer section (8) for each pair of directly adjacent opening rollers (61) of two cleaning sections (60), which is designed to transfer the fibre material transported from one opening roller (61) to a subsequent further opening roller (61) in a fibre transport direction which extends substantially transversely to the axis of rotation of said one opening roller and / or the further opening roller (61). The method for operating such a device has an operating phase in which in each pair the rotational speed of said one opening roller (61) is less than the rotational speed of said further opening roller (61). The spinning machine (1) according to the invention has such a device.

Description

Technical Field

[0001] The present invention relates to a method for operating a multi-roller device or spinning machine for cleaning fibrous materials, and to a device or spinning machine operated using the method. Background Technology

[0002] Such spinning machines are known. These spinning machines are used to separate materials (loose fibers, possibly containing other impurities) from impurities from upstream spinning machines and to loosen the loose fibers and further transport them to downstream spinning machines (such as blending machines). The upstream spinning machines are, for example, balers or heavy-duty separators used to separate impurities from the loosened fiber material, which may damage the downstream spinning machines.

[0003] EP 2554726A1 discloses an opening machine with a dust grid for separating impurities, such as seed coats or dirt, from the fiber material to be opened. Therefore, in the technical understanding, it is a cotton cleaner. This cotton cleaner includes a feeder. The feeder separates the incoming fiber-airflow, causing the two streams to impact the first opening roller at a relatively small distance from its center. The first opening roller, based on its rotation and existing guide elements along its outer periphery, transports the incoming fiber material from the impact position outward in opposite directions along its axis of rotation to both ends of the opening roller. The fiber material is then transferred to the corresponding opposite ends of a second opening roller. The second opening roller, based on its rotation and also existing guide elements along its outer periphery, transports the fiber material transferred from the first opening roller inward from its ends in two opposite directions along its axis of rotation to the center of the opening roller. The thus aggregated fiber material is then transferred to a downstream spinning machine through an outlet. In addition, a dust grid with an impeller brake located at the bottom is provided below each opening roller to separate the corresponding impurity material. Summary of the Invention

[0004] The objective of this invention is to improve the transfer of fibrous material to be cleaned between two opening rolls in a multi-roll spinning machine.

[0005] In a method for use with equipment operating on or in a spinning machine, the equipment has multiple cleaning sections, each with an associated opening roller. The equipment is designed to convey fibrous material in at least one corresponding transport direction along the axis of rotation of the associated opening roller as the associated opening roller rotates in a predetermined direction, and in this case, separate impurity material. For each pair of directly adjacent opening rollers in two cleaning sections, there is an associated transfer section designed to transfer fibrous material conveyed from one opening roller toward a fiber transport direction extending substantially transversely to the axis of rotation of said one opening roller and / or another opening roller to a subsequent additional opening roller. Here, the method has an operating phase in which, in each pair, the rotational speed of one opening roller is less than that of the other opening roller. Surprisingly, it has been found that the increased rotational speed of the opening rollers along the processing direction causes the fibrous material to be cleaned to be pulled apart to a certain extent in the transition area between the two opening rollers by the corresponding downstream, additional opening roller receiving the fibrous material to be cleaned. That is, the transfer of material from one opening roll to another is more reliable. In addition, the risk of material blockage is reduced, especially in the area of ​​the other opening roll.

[0006] The method preferably includes a start-up phase as a transition from a stationary phase (where the opening rollers are stationary) to a running phase. During the start-up phase, in at least one pair of cases, both opening rollers shift simultaneously. Thus, the upstream output opening roller accelerates less initially than the immediately following receiving opening roller. Alternatively or additionally, the upstream opening roller may rotate slightly later than the downstream opening roller. In all these cases, the speed difference according to the invention is achieved at start-up.

[0007] Alternatively or additionally, the method may include an acceleration phase within the operating phase, in which, in at least one pair of cases, the rotational speeds of both opening rollers are increased simultaneously, or the rotational speed of one opening roller is increased slightly later and / or more slowly than that of the other opening roller. Such an acceleration phase may occur when the output of the relevant equipment or spinning machine is to be increased, the cleaning power is to be changed, and / or the fiber material to be cleaned is to be changed.

[0008] Correspondingly, a braking phase may also exist during the operation phase, in which, in at least one pair of cases, the rotational speeds of the two opening rollers are reduced simultaneously, or the rotational speed of one opening roller is reduced earlier and / or to a greater extent relative to the other opening roller.

[0009] Each of the aforementioned methods may have a stopping phase as a transition from the running phase to the stationary phase, in which, in at least one pair of cases, both opening rolls stop simultaneously or one opening roll stops earlier than the other opening roll.

[0010] In the aforementioned method that utilizes the rotational speed variation at a corresponding pair of opening rollers, the rotational speed variation of one opening roller can be performed differently from that of the other opening roller, but the rotational speed of the other opening roller is always higher than that of the first opening roller.

[0011] Here, preferably, the acceleration value of one opening roll is less than the acceleration value of the corresponding other opening roll in that segment of the corresponding stage, at least in one section of the corresponding stage. When the rotational speeds of both opening rolls increase, it is clear that the rotational speed of the other opening roll is higher than that of the first opening roll. When the rotational speeds of both opening rolls decrease, the acceleration values ​​of both opening rolls are negative. This clearly demonstrates that the one opening roll has more negative acceleration, i.e., braking, than the other opening roll.

[0012] The equipment on or in a spinning machine includes the equipment mentioned at the beginning. Furthermore, the equipment includes a drive section. The drive section is designed to rotate and drive the opening roller. According to the invention, the drive section is designed to operate the equipment according to one of the aforementioned methods; no special, further preparation measures are required. This allows existing drive sections to be partially or completely replaced, providing the possibility of retrofitting. Alternatively or additionally, the equipment has a control device or is connected to such a control device, which is designed to operate the drive section according to one of the aforementioned methods. In the case of retrofitting, updating the control software for the drive section is sufficient to achieve one of the aforementioned methods.

[0013] The drive section preferably includes a drive element that is rotatably connected to at least one pair of opening rollers. That is, a single drive element is sufficient to achieve the method according to the invention.

[0014] Here, the drive section may include a transmission mechanism through which the drive element is rotatably connected to at least one of the at least one pair of opening rollers. This allows for a simple implementation of the speed difference.

[0015] The transmission mechanism preferably includes a traction drive assembly, in which the traction roller driven by the drive element via the traction element is effectively connected to the corresponding opening roller for rotation. This makes it particularly easy to establish the speed difference according to the invention.

[0016] Alternatively or additionally, the device includes a mechanical device designed to differentiate the rotational speed and / or acceleration values ​​of the at least one pair of opening rollers. In the case of a traction drive assembly, the speed difference can be influenced by the diameter of the traction wheel or its number of teeth (when using a toothed belt or chain as the traction element) and can also be changed by replacement. The acceleration value can be changed by means of a continuously variable transmission or an automatic multi-gear transmission.

[0017] Here, a clutch mechanism is provided between the at least one pair of opening rolls. Alternatively, a separate drive element can be provided for each of the at least one pair of associated opening rolls, which is mechanically disengaged from or connected to the aforementioned drive element in such a way that the separate drive element can override the rotation transmitted by the aforementioned drive element to the associated opening roll. All these variations can be implemented using conventional devices.

[0018] The spinning machine according to the present invention has one of the above-mentioned devices.

[0019] Here, the spinning machine can be configured as a cotton cleaner, a multi-roller cotton opener, or a feeder. Therefore, the present invention is universally applicable. Attached Figure Description

[0020] Other features and advantages of the invention will become apparent from the following description of preferred embodiments. (See figures:)

[0021] Figure 1 A cotton cleaning machine according to one embodiment of the present invention is shown;

[0022] Figure 2 Showing from Figure 1 A vertical cross-sectional view from the back;

[0023] Figure 3 Showing through Figure 1 The material flow in the cleaning section of the cotton cleaning machine;

[0024] Figure 4 Showing from Figure 1 A vertical cross-section viewed from the front;

[0025] Figure 5 A method for operating a spinning machine equipped with an opening roller, according to a first embodiment of the present invention, is shown.

[0026] Figure 6 A method for operating a spinning machine equipped with an opening roller, according to a second embodiment of the present invention, is shown.

[0027] Figure 7 shows the following in more detail: Figure 5 and Figure 6 The method consists of two sub-processes. Detailed Implementation

[0028] The solutions according to the present invention include different combinations of features, particularly defined by the following sequentially numbered embodiments:

[0029] 1. A spinning machine (1), particularly a cotton cleaner, multi-roller opener, or feeder, having a device wherein said device has - a plurality of cleaning sections (60), said plurality of cleaning sections • each having an associated opening roller (61) and • designed to convey fibrous material in at least one corresponding transport direction along the axis of rotation of the associated opening roller (61) and, in this case, separate impurity material as the associated opening roller (61) rotates in a predetermined direction, and - an associated opening roller (61) for each pair of directly adjacent opening rollers (61) of two cleaning sections (60). A transfer section (8) is designed to transfer fiber material conveyed from one opening roller (61) in a fiber transport direction that extends substantially transversely to the axis of rotation of the one opening roller (61) and / or the other opening roller (61) to another opening roller (61); a drive section (70) is designed to rotate and drive the opening roller (61), wherein the drive section (70) is designed to operate the device in such a way that, during operation, in each pair, the rotational speed of one opening roller (61) is less than the rotational speed of the other opening roller (61).

[0030] 2. The spinning machine (1) according to embodiment 1 is characterized in that the spinning machine (1) has a housing (2) surrounding a first cleaning section (60) and a second cleaning section (60), wherein a wall section (63) together with a dust grid (62) disposed on its lower side defines a front chamber (67) in which one opening roller (61) is configured to be freely rotatable, and another wall section (63) together with another dust grid (62) disposed on its lower side defines a rear chamber (67) in which another opening roller (61) is configured to be freely rotatable, wherein the distance between the rear chamber (67) and the vertical surface of the spinning machine (1) is less than that of the front chamber (67).

[0031] 3. The spinning machine (1) according to embodiment 1 or 2 is characterized in that the transport directions along the rotation axes of the opening rollers (61) arranged directly in succession are opposite to each other.

[0032] 4. The spinning machine (1) according to any one of embodiments 1 to 3, wherein the drive section (70) includes a drive element, the drive element being effectively connected to at least one pair of rotations.

[0033] 5. The spinning machine (1) according to embodiment 4, wherein the drive section (70) includes a transmission mechanism (71-75) and the drive element is rotatably connected to at least one of the pair of opening rollers (61) via the transmission mechanism.

[0034] 6. The spinning machine (1) according to embodiment 5, wherein the transmission mechanism (71-75) includes a traction transmission group (71-75), wherein the traction roller (72-73) driven by the driving element through the traction member (74, 75) of the traction transmission group is rotatably connected to the corresponding opening roller (61).

[0035] 7. The spinning machine (1) according to embodiment 5 or 6 has a mechanical device designed to make the rotational speed and / or acceleration values ​​of the at least one pair of opening rollers (61) different.

[0036] 8. The spinning machine (1) according to embodiment 7, • has a clutch mechanism disposed between the at least one pair of opening rollers (61), or • has a separate drive element for the at least one pair of associated opening rollers (61), the separate drive element being either mechanically disengaged from or coupled to the one drive element, such that the separate drive element is capable of covering the rotation transmitted by the one drive element to the associated opening roller (61).

[0037] Figure 1 A spinning machine 1 in the form of a cotton cleaner is shown according to one embodiment of the invention. The cotton cleaner 1 includes a housing 2 containing the main operating components of the cotton cleaner. The housing 2 includes known guard plates, door panels, and an unmarked frame not visible here.

[0038] A display 3 is located on the front of the casing. The function of the display 3 is to make the operating status, operating progress, or production value visible to the outside.

[0039] An inlet section 20 is located above the housing 2, which supplies fibrous material to a cleaning section 60, described in detail later, which is surrounded by the housing 2. A supply section 10 connects the inlet section 20 to a fiber-air supply device. In the illustrated example, the supply section 10 mainly consists of two pipes 12, 12 and a sensor 11 disposed between them. The sensor 11 is used, for example, to determine the velocity of the fiber-air flow. In the illustrated example, the right-hand pipe 12 leads into pipe section 22. Through pipe section 22, the incoming fiber-air flow is diverted to pipe section 23, which leads into pipe section 24 at its end away from pipe section 22. Pipe section 24, in turn, leads into air separator 26 at its end away from pipe section 23.

[0040] Air separator 26 is used to remove excess air (in extreme cases: all air) from the incoming fiber-air stream. The remaining material stream (possibly containing air-laden fiber material) is directed into a first cleaning section 60, which is surrounded by housing 2. Furthermore, motor 21, via fan 25 (described in detail later), diverts the fiber-air stream entering from right-hand duct 12 into either duct section 22 or duct section 23.

[0041] Pipe 28 is used to discharge the air separated by air separator 26 from cotton cleaner 1.

[0042] The housing 2 is supported here on four adjustable feet 5. The adjustable feet 5 are used in a known manner to level the cotton cleaning machine 1 on a vertical surface (the ground).

[0043] The cotton cleaning machine 1 also includes a discharge section 30 for the cleaned fibrous material. The discharge section 30 includes two pipes 31 and 32, between which a sensor 33 is disposed.

[0044] In addition, the outlet section 40 is presented as a pipe 41. The outlet section 40 is used to convey the material (dirt, seed coat, etc.) separated from the incoming fiber-airflow from the cotton cleaner 1.

[0045] Figure 2 Showing from Figure 1 A vertical sectional view from the rear. Here, the exposed... Figure 1 The back of the cotton cleaning machine 1. The inlet section 10 has also been removed. Thus, the pipe section 22 is clearly visible in this regard, and the aforementioned fan 25 can be seen.

[0046] Air separator 26 has a connecting pipe 27 at its outlet side, which in turn connects to the wall section 63 of the first cleaning section 60 through an opening 64. The wall section 63, together with a dust grid 62 disposed below it, defines a chamber 67 in which an opening roller 61 is configured to rotate freely in a known manner. Here, the opening roller 61 includes outwardly projecting, rod-shaped protrusions (not shown in detail) for actuating the fibrous material within the chamber 67.

[0047] Furthermore, the cotton cleaning machine 1 has a second cleaning section 60, which has a rear chamber 67, which is also surrounded by a wall section 63 and a second dust compartment 62. The rear chamber 67 has an opening on its upper side that is not visible here, and the connecting pipe 34 of the outlet section 30 enters the chamber on the inlet side.

[0048] The connecting pipe 34 is connected to the aforementioned pipe 31 on the discharge side.

[0049] The fibrous material entering from the air separator 26 Figure 2The material is preferably transported horizontally to the right from the opening roller 61 in front of it. To achieve this, a guide element 65 is provided in the chamber 67. The guide element guides the fibrous material... Figure 2 The material is guided to the right horizontally. Here, impurities (stones, seed shells, etc.) are discharged through the dust grid 62 on the right. Below the dust grid 62, there is a discharge section 40, which includes a wall section 47 in the upper region facing the dust grid 62. The wall section 47, together with the impeller 42 of the impeller gate and the dust grid 62, each surrounds a (discharge) chamber 48.

[0050] In the example shown, the wall section 47 is formed such that the cross-section of the correspondingly formed chamber 48 narrows towards the impeller 42. Two outer wall sections 47 are adjacent to wall section 43 at the bottom. The wall section 43 partially surrounds the impeller 42 and forms a discharge pipe 44 below the impeller 42. The discharge pipe 44 is open towards the impeller 42. The interior of the discharge pipe 44 is hollow, thus forming a discharge space 45. During cleaning, impurities fall through the dust filter 62 towards the impeller 42 into the chamber 48. The rotation of the impeller 42 causes the falling impurities to be conveyed into the discharge space 45.

[0051] Impeller 42 is constructed in a known manner, and its protrusions preferably have resilient sealing lips that abut against the wall sections 43, 47 or have a very small gap, so that impurity material is reliably transported into the outlet space 45.

[0052] Figure 3 The material flow 4 is shown passing through the cleaning section 60 of the cotton cleaner 1. The fibrous material reaches the left chamber 67 via the connecting pipe 27, and is spirally transported toward the transfer section 8 by means of a guide element 65 (not shown) and transported into the transfer section 8 based on centrifugal force acting on the chamber. Centrifugal force causes the fibrous material to automatically reach the area of ​​the right chamber 67. This is simplified by making the distance between the right chamber 67 and the vertical surface of the cotton cleaner 1 smaller than that of the left chamber 67. Thus, gravity can be utilized, and the fibrous material reaches the right chamber 67 less difficult. An opening roller 61 (not shown) disposed therein, together with the guide element 65 disposed therein, spirally transports the fibrous material toward the connecting pipe 34. Here, impurity material is separated in both chambers 67 by a dust grid 65 (also not shown). Figure 3 In the middle, the support part 66 of the dust rod can be seen for the dust grid 62.

[0053] Figure 4 Showing from Figure 1The vertical cross-section of the cotton cleaning machine 1 as seen from the front. A window 6 is preferably constructed on or within the housing 2 to prevent fiber accumulation in the corresponding adjacent chamber 67. Furthermore, a drive section 70 is constructed on this side of the cotton cleaning machine 1. The drive section 70 includes a concealed motor, on which a pulley 71 is anti-torsional mounted on the driven shaft. A drive belt 74 is wound around this pulley 71 and another pulley 72. The pulley 72 is positioned relative to the rear of... Figure 2 The right-hand loosening roller 61 is anti-torsion positioned. The pulley 72 has two sides. A drive belt 74 is wound on the first side. A second drive belt 75 is wound on the rearward side, and this drive belt also winds around a third pulley 73. The pulley 73 is relative to... Figure 2 The left-hand opening roller 61 is anti-torsion positioned. This allows the motor to drive both opening rollers 61, 61. The pulley 72 preferably has a smaller outer diameter than the pulley 73. Consequently, the rotational speed of the right-hand opening roller 61 is greater than that of the left-hand opening roller 61. This results in a remarkable effect: the transported fiber material is slightly stretched, especially in the area of ​​the transfer section 8. This allows the fiber material to be transported frictionlessly through the invisible transfer section 8, even at high production volumes, and reduces the risk of fiber material accumulation. Overall, this results in smoother operation. Furthermore, the passing fiber material is stretched to a certain extent, resulting in a certain degree of orientation.

[0054] Furthermore, in the illustrated arrangement, a preferably adjustable tension pulley 76 is provided in the area of ​​the drive belt 75. Such a tension pulley could also be provided in the area of ​​the drive belt 74. Alternatively, only one drive belt exists, in which a tension pulley may be provided to steer the drive belt such that the window 7 remains positioned below the drive belt.

[0055] Window 7 is located in the region of chamber 48 of the outlet section 40 and has the same effect as window 6 (only in relation to chamber 48).

[0056] Finally, a motor 46 is provided, which is anti-torsional positioned relative to the impeller 42. Thus, the motor 46 rotates the impeller 42, thereby allowing the separated material to be removed from the cotton cleaning machine 1.

[0057] Therefore, the function of the drive section 70 constructed in this way is as follows:

[0058] If the drive motor starts running from a standstill (speed = 0), the drive motor preferably accelerates the speed of its driven shaft according to a predetermined behavior.

[0059] The two pulleys 72 and 73 are rotated almost simultaneously. Due to the transmission ratio between pulleys 72 and 73, at each waiting time, the rotational speed of the opening roller 61, which is closest to the drive motor in terms of drive and is located on the right, is higher than that of the other opening roller 61, which is set in the opposite direction to the fiber transport direction. This causes the fiber material transferring from the left opening roller to the right opening roller 61 to be pulled apart to a certain extent as it passes through the transfer section 8.

[0060] When braking by the drive motor, the speed ratio of the two opening rollers 61, 61 is also maintained until the drive motor stops.

[0061] Figure 5 A method for operating a spinning machine equipped with an opening roller, according to a first embodiment of the present invention, is shown.

[0062] After starting in step S1, in the subsequent step S2, it is checked whether the two opening rollers exemplified here should be accelerated.

[0063] If this is not the case (the "No" branch after step S2), return to step S2. Otherwise (the "Yes" branch after step S2), accelerate the opening roller of the spinning machine in the first sub-process in the subsequent step S5.

[0064] If the two opening rollers are at the speed ω they want to achieve BI Or ω Bs If the machine rotates, then in the subsequent step S6, check whether the opening rollers 61, 61 should be braked. If this is not the case (No-branch after step S6), return to step S6. Otherwise (Yes-branch after step S6), brake the opening rollers of the spinning machine in the second sub-process in the subsequent step S7.

[0065] After the two opening rollers are braked, check in the subsequent step S8 whether the operation of the spinning machine has ended. If this is not the case (No-branch after step S8), return to step S2. Otherwise (Yes-branch after step S8), jump to step S9, in which the operation of the spinning machine involving the opening rollers is ended.

[0066] Figure 6 A method for operating a spinning machine according to a second embodiment of the invention is shown. Figure 5 The method shown differs from the one described above. First, the no-branch after step S6 returns to step S2. Second, the no-branch after step S2 jumps to step S6. The advantage of this approach is that it alternately checks whether the relevant opening roll should be accelerated or braked. This increases the flexibility of use, as the opening roll can thus be accelerated and / or braked in stages. This, for example, allows for test runs at relatively low final speeds. Upon successful testing, the speed is increased to higher production speeds.

[0067] Figure 7 shows more details Figure 5 and Figure 6 Two sub-procedures in the method. Figure 7a The first sub-process of step S5 is shown, and Figure 7b The second sub-process of step S7 is shown.

[0068] according to Figure 7a In the first step S51 of the first sub-process of accelerating two opening rollers that are directly and successively arranged in the fiber transport direction, the faster-running opening roller is accelerated by α. Bs Accelerate to speed ω Bs Simultaneously, in step S52, the predetermined waiting time Δt is checked. BI Is it due? If not (No-branch after step S52), return to step S52. Otherwise (Yes-branch after step S52), in the subsequent step S53, the slower-moving opening roller ahead in the fiber transport direction is accelerated by α. BI Accelerate to speed ω BI Applicable here: ω BI <ω Bs Also applicable to: α Bs ≥α BI Waiting time Δt BI The value can be 0, which is equivalent to omitting step S52.

[0069] according to Figure 7b In the first step S71 of the sub-process of braking two opening rollers that are directly and successively set in the fiber transport direction, the preceding, slower-moving opening roller is accelerated by a negative value α. AI Braking to speed ω AI Simultaneously, in step S72, the predetermined waiting time Δt is checked. As Is it due? If not (No-branch after step S72), return to step S72. Otherwise (Yes-branch after step S72), in the subsequent step S73, the faster-running opening roller is moved with the same negative acceleration α. As Braking to speed ω As Applicable here: ω AI <ω As Or, when the cotton cleaning machine stops, apply ω AI =ω As =0. Here, we can also apply: |α AI |≥|α As |. Waiting time Δt As It can also be 0, which is equivalent to omitting step S72.

[0070] In the two sub-processes, the rotational speeds of the two opening rollers 61, 61 are preferably different from each other, such that, except when the two opening rollers 61, 61 are stationary, at any point in time (i.e. during the acceleration and braking phases), the faster-running opening roller 61 in the rear rotates faster than the slower-running opening roller 61 in the front.

[0071] For the cotton cleaner 1, which is a special type of spinning equipment according to the present invention, the drive section 70 implemented there applies to the opening rollers 61, 61: Δt BI =Δt As =0, α Bs >α BI And |α AI |>|α As |

[0072] The present invention is not limited to the embodiments described above.

[0073] In the case of multiple opening rolls 61, the drive section 70 can have a separate driver for a portion of the opening rolls 61. Furthermore, a connecting part can be provided so that the slower-running opening roll 61 accelerates later than the faster-running opening roll 61, and correspondingly, the faster-running opening roll 61 brakes later than the slower-running opening roll 61. These two variations represent the implementation of steps S52 and S72.

[0074] If a waiting time is set, the slower-running opening roll 61 can (temporarily) accelerate faster or brake slower than the faster-running opening roll 61 in the corresponding pair.

[0075] Importantly, the final rotational speed to be achieved by the opening rollers 61, 61 always increases in the fiber transport direction. Preferably, this also applies at any point in time during the acceleration and braking phases.

[0076] Even though the present invention is described with respect to a cotton cleaning machine 1 or a pair of opening rollers 61, 61 arranged directly and successively in the fiber transport direction, the present invention can be extended to any number of opening rollers 61, 61. For example, in the case of three opening rollers, steps S53 and S73 can be replaced by steps S5 or S7 respectively, which then proceed as follows Figure 7a or Figure 7b This results in a nested or cascaded process structure for controlling or operating the individual opening rollers.

[0077] Instead of a cotton cleaning machine, the present invention can also be applied to other spinning machines 1 with multiple opening rollers 61, 61, such as multi-roller cotton openers or feeders.

[0078] Therefore, the present invention provides a simple and low-cost possibility, particularly making fiber transport more reliable within the transfer range between two opening rollers arranged directly and successively along the fiber transport direction, and reducing or even eliminating the risk of fiber accumulation. Last but not least, the fiber treatment itself is improved by the stretching effect on the fiber material in this area, and thus the cleaning or opening effect of the associated spinning machine is improved.

[0079] List of reference numerals

[0080] 1 Spinning machine

[0081] 2 shells

[0082] 3 monitors

[0083] 4. Fiber material flow

[0084] 5 Adjustable Feet

[0085] 6 windows

[0086] 7 windows

[0087] 8 transfer sections

[0088] 10 Supply Section

[0089] 11 sensors

[0090] 12 pipes

[0091] 20 Introduction Section

[0092] 21 motors

[0093] Pipeline sections 22-24

[0094] 25 fans

[0095] 26 air separator

[0096] 27 connecting pipe

[0097] 28 pipes

[0098] 30 Derivation Section

[0099] Pipes 31 and 32

[0100] 33 sensors

[0101] 34 connecting pipe

[0102] 40 Derivation Section

[0103] 41 pipes

[0104] 42 impeller

[0105] 43 wall sections

[0106] 44 Export Pipe

[0107] 45 Export Space

[0108] 46 motors

[0109] 47 wall segments

[0110] 48 chambers

[0111] 60 Cleaning Section

[0112] 61 opening roller

[0113] 62 dust grids

[0114] 63 wall segments

[0115] 64 openings

[0116] 65 guide element

[0117] 66 dust grid support section

[0118] 67 chambers

[0119] 70 drive section

[0120] 71-73 Belt pulleys

[0121] 74, 75 drive belts

[0122] 76 tensioners

[0123] Si; i∈N Steps

Claims

1. A spinning machine (1), comprising a device, wherein, The device has - Multiple cleaning sections (60), the multiple cleaning sections •Each has an associated opening roller (61) and • Designed to transport fibrous material in at least one corresponding transport direction along the axis of rotation of the associated opening roller (61) as the associated opening roller (61) rotates in a predetermined direction. Transport and In this case, impurity materials are separated, and - For each pair of directly adjacent opening rollers (61) of the two cleaning sections (60), there is an associated transfer section (8) designed to transfer the fiber material conveyed from the first opening roller to the second opening roller in a fiber transport direction extending transversely to the axis of rotation of the first and / or second opening rollers. - Drive section (70), the drive section is designed to rotate and drive the opening roller (61), and wherein the drive section (70) is designed to operate the device in such a way that, during the operation phase, in each pair, the rotational speed of the first opening roller is less than the rotational speed of the second opening roller. Its features are, The spinning machine (1) has a housing (2) that surrounds a first cleaning section and a second cleaning section, wherein a wall section together with a dust grid disposed on its lower side defines an upstream chamber (67) in the fiber transport direction, in which the first opening roller is configured to be freely rotatable, and another wall section together with another dust grid disposed on its lower side defines a downstream chamber (67) in the fiber transport direction, in which the second opening roller is configured to be freely rotatable, wherein the distance between the downstream chamber (67) and the vertical surface of the spinning machine (1) is less than that between the upstream chamber (67) and the vertical surface of the spinning machine (1).

2. The spinning machine (1) according to claim 1, characterized in that, The spinning machine (1) is a cotton cleaner, a multi-roller cotton opener, or a feeder.

3. The spinning machine (1) according to claim 1, characterized in that, The transport directions along the rotation axes of the opening rollers (61) which are arranged directly adjacent to each other are opposite to each other.

4. The spinning machine (1) according to claim 2, characterized in that, The transport directions along the rotation axes of the opening rollers (61) which are arranged directly adjacent to each other are opposite to each other.

5. The spinning machine (1) according to claim 1, wherein, The drive section (70) includes a drive element that is connected to at least a pair of directly adjacent opening rollers (61) in a rotary drive manner.

6. The spinning machine (1) according to claim 4, wherein, The drive section (70) includes a drive element that is connected to at least a pair of directly adjacent opening rollers (61) in a rotary drive manner.

7. The spinning machine (1) according to claim 5 or 6, wherein, The drive section (70) includes a transmission mechanism, through which the drive element is connected to at least one of the pair of directly adjacent opening rollers (61) in a rotary drive manner.

8. The spinning machine (1) according to claim 7, wherein, The transmission mechanism includes a traction drive assembly, wherein the traction roller driven by the drive element through the traction element is connected to the corresponding opening roller (61) in a rotary drive manner.

9. The spinning machine (1) according to claim 7, having a mechanical device designed to make the rotational speed and / or acceleration values ​​of the at least one pair of opening rollers (61) different.

10. The spinning machine (1) according to claim 8, having a mechanical device designed to make the rotational speed and / or acceleration values ​​of the at least one pair of opening rollers (61) different.

11. The spinning machine (1) according to claim 9 or 10. • It has a clutch mechanism disposed between the at least one pair of opening rollers (61), or • Each of the at least one pair of associated opening rollers (61) has a separate drive element, the separate drive element - Mechanically disengaged from one of the drive elements, or - Connected to the one drive element, such that the individual drive element can cover the rotation transmitted by the one drive element to the associated opening roller (61).

Images