Method for gravimetric measurement of filling level for a spinning preparation machine and spinning preparation machine

Abstract

This invention relates to a method for measuring the filling state of a spinning preparation machine (1) for processing fiber bundles (2) that can be erected or is already erected on a fixed base plate (3), wherein the spinning preparation machine (1) has: a plurality of side-by-side filling channels (5) for fiber bundles (2); a feeding channel (6) provided above the filling channels (5), which is connected to a central fiber bundle inlet (9) on the input side and has a base plate opening (7) for each filling channel (5) on the output side; a plurality of locking mechanisms (11) provided in the feeding channel (6), the locking mechanisms being adjustable by means of an adjuster (36); and a control unit (37) configured to adjust the adjuster (36) for filling the filling channels (5) with fiber bundles (2) such that only one base plate opening (5) is always aligned with the central fiber bundle inlet (9) based on the adjusted position of the locking mechanism (11) at the same time. The method comprises the following steps: a connection; a discharge device (34) disposed below the filling channel (5), the discharge device being connected to the filling channel (5) on the input side and to a central fiber bundle discharge section (18) on the output side; a weighing device (26) signal-connected to a control unit (37), the weighing device being disposed in the force line between the filling channel (5) and a fixed base plate (3), and wherein the method comprises the following steps: measuring the weight change of the weighing device (26) within a defined time interval during the filling process and / or the emptying process; calculating the change in the filling weight of the filling channel (5) by the control unit (37) based on the weight change within the defined time interval; calculating the filling state of the filling channel (5) by the control unit, wherein the change in filling weight is distributed to the at least one filling channel (5), the filling channel being connected to the fiber bundle inlet section (9) based on the adjustment position of the locking mechanism within the defined time interval. The invention also relates to a spinning preparation machine.

Description

Technical Field

[0001] This invention relates to a method for measuring the filling state of a spinning preparation machine capable of filling with fiber bundles by weight, wherein the spinning preparation machine comprises: a plurality of filling channels arranged side by side; a feeding channel disposed above the filling channels, connected to a central fiber bundle inlet on the input side and having a bottom plate opening for each filling channel on the output side; a discharge device disposed below the filling channels, connected to the filling channels on the input side and connected to a central fiber bundle discharge on the output side; and a weighing device signal-connected to a control unit. The invention also relates to a spinning preparation machine. Background Technology

[0002] A spinning preparation machine for processing fiber bundles is known from EP 3 587 631 A1, wherein the frame of the spinning preparation machine is supported on a base at at least four support points. At least one weighing unit is provided between the frame and the base for measuring the filling status of the storage section of the spinning preparation machine that can be filled with fiber bundles.

[0003] A fiber metering feed device for introducing fibers into concrete is known from US2004255429. The device has a frame for supporting the fiber output device. Multiple weighing units are installed between the frame and the transport housing of the fiber metering feed device.

[0004] The filling weight of the fiber bundles can be accurately determined by using a spinning preparation machine erected on a weighing unit, given the net weight of the spinning preparation machine. However, knowing the filling weight is not always sufficient to prevent individual filling lanes from running idle in spinning preparation machines with multiple filling lanes, because the fiber bundles may be distributed significantly differently across the lanes. If even one filling lane runs idle, it will negatively impact the output of the spinning preparation machine. Summary of the Invention

[0005] The objective of this invention is to provide a method for measuring the filling state by weight in a spinning preparation machine, which enables uniform production. A further objective of this invention is to provide a spinning preparation machine capable of achieving uniform production.

[0006] The task is solved by a method of the type described at the beginning, wherein the spinning preparation machine has: a plurality of locking mechanisms disposed in the feeding channel, the locking mechanisms being adjustable by means of an adjuster; and a control unit configured to manipulate the adjuster for filling the filling channel with fiber bundles such that only one bottom plate opening is always connected to the central fiber bundle inlet based on the adjusted position of the locking mechanisms at any given time, and the method includes the following steps:

[0007] 1) During the filling and / or emptying process, the change in weight is measured at defined time intervals using a weighing device;

[0008] 2) The control unit calculates the change in filling weight of the filling passage based on the weight change within a defined time interval;

[0009] 3) The filling state of the filling channel is calculated by the control unit, wherein the change in filling weight is distributed to the at least one filling channel, and the filling channel is connected to the fiber bundle entry part based on the adjustment position of the locking mechanism within a defined time interval.

[0010] The advantage is that the control unit controls the adjuster and therefore knows the adjustment position of the locking mechanism. This allows the control unit to consider, when calculating the filling state, which filling channel was connected to the fiber bundle inlet for how long within a defined time interval. The control unit also obtains information about how the weight changes within the time interval using a weighing device. Accordingly, taking into account the information from the adjustment position of the locking mechanism, the control unit can proportionally allocate the amount or weight of the fiber bundle entering to each filling channel. In this way, the control unit can calculate the filling state of a single filling channel.

[0011] During the filling process, feeding is performed to fill at least one of the filling channels with fiber bundles. Furthermore, the discharge device stops during the filling process, so no fiber bundles are discharged from the filling channels. During the emptying process, no feeding is performed, and the discharge device discharges the fiber bundles from the filling channels. Feeding is performed during both the filling and emptying processes, and the discharge device discharges the fiber bundles from the filling channels.

[0012] The weighing equipment measures the weight, from which the total weight can be calculated. The total weight consists of the net weight and the filling weight. Because the weighing equipment is positioned along the force line between the filling passage and the fixed base plate, the total weight does not necessarily equal the total mass of the spinning preparation machine.

[0013] The change in weight is specifically equal to the difference between the weight measured at the beginning of the time interval and the weight measured at the end of the time interval. Therefore, the change in weight has the same physical unit as the weight. The weighing device and / or control unit can preferably convert or specify the force parameter in kilograms. Similarly, the change in fill weight can be equal to the difference between the fill weight at the beginning of the time interval and the fill weight at the end of the time interval. Therefore, the change in fill weight has the same physical unit as the fill weight, i.e., kilograms. The fill weight is equal to the difference between the weight measured by means of a weighing device and the net weight, or tare weight, that can be stored in the control unit. The latter occurs when the filling passage is empty or when there are no fiber bundles in the spinning preparation machine. The net weight can be measured by means of a weighing device or stored as a predetermined value in the control unit.

[0014] Therefore, the mass of the fiber bundles is considered for filling state calculation. Compared to height measurements, such as those using gratings placed in the filling passage, this filling state calculation offers advantages such as: direct comparability with other information from testing or measurement systems in the spinning mill (e.g., the weight of the bales set for the unpacking machine in bales inspection); independence from material compression or filling weight in the filling passage by compressed air; independence from varying material properties, such as packing density; and independence from material distribution in the filling passage. The filling state can be expressed in kilograms. The filling state of the corresponding filling passage can thus be expressed in kilograms as the amount of fiber bundles in the corresponding filling passage. This is advantageous because it allows for the simple representation of the minimum value, i.e., the minimum filling state, and / or the maximum value, i.e., the maximum filling state. This is particularly advantageous if the spinning preparation machine processes different materials one after another, for example, first processing cotton fiber bundles and then processing mixed fiber bundles (including, for example, regenerated fibers) after a material change. These values ​​can be stored in the control unit or adjusted or changed by the operator of the spinning preparation machine.

[0015] It can also be specified that steps 1) to 3) of the aforementioned method are repeated during the filling and / or emptying process. In particular, steps 1) to 3) are repeated continuously. In this way, the current filling state is always known. For example, the time interval can be 1 second, 2 seconds, 3 seconds, 4 seconds, 5 seconds, or greater than 5 seconds or less than 1 second. Preferably, the time interval is in the range of 1 second to 10 seconds.

[0016] To further optimize the calculation of the filling state, the discharge device can be configured to have a pair of inlet rollers for each filling channel, wherein the control unit considers the rotational speed of the inlet rollers in the pair to calculate the filling state. This allows for accurate determination of the weight of the fiber bundles output from the filling channel within a corresponding time interval. For the corresponding time interval, the input weight can be determined by the formation of a difference between the change in filling weight and the output weight. This improves the accuracy of the calculated filling state value. The state of the inlet rollers is also detected by the control unit. The state can provide information on whether the inlet rollers are rotating or stopped. When the inlet rollers are rotating, the filling channel is emptied. When the inlet rollers are stopped, no fiber bundles are discharged from the filling channel. Preferably, each inlet roller is coupled to a common driver. Two inlet rollers can be provided in each filling channel. Alternatively, a separate driver can be provided for each filling channel, which drives the inlet roller of the corresponding filling channel. Preferably, the rollers of the inlet roller pair are driven at the same rapid speed. This method of simultaneously extracting fiber bundles from all filling channels ensures better mixing of the fiber bundles in the mixing channels. Furthermore, the drive system is structurally easier to implement, driving all the inlet roller pairs. However, in principle, each inlet roller pair can also be driven individually.

[0017] Specifically, the control unit calculates the output of the spinning preparation machine and the inlet roller speed based on the weight changes measured by a weighing device during a time window when no material is fed into the filling passage. Output represents the weight of the fiber bundle output by the spinning preparation machine per unit time. It is usually expressed in kilograms per hour.

[0018] Experiments show that, with several of the multiple filling channels at a filling level between approximately 30% and 100% of the maximum filling state, the output remains constant in each filling channel. Therefore, the filling channels can be filled selectively using the method according to the invention (which calculates the filling state of each filling channel). This prevents individual filling channels from idling or their filling state from dropping below a predetermined minimum value, which could be, for example, 40% of the maximum filling state.

[0019] To optimize control over the entire spinning preparation process, the overall fill status of the spinning preparation machine can be considered for purposes such as calculating maintenance windows, calculating switching times between lines, and providing added value / safety to customers, in conjunction with the output quality flow of the carding machine. In particular, the overall fill status corresponds to the fill weight. This is especially advantageous when the spinning preparation machine is constructed as a mixer, particularly a tunnel mixer.

[0020] Other existing information obtained from the spinning preparation machine or control unit may include, for example, pressure values ​​from pressure measurements, which can be taken into account when further optimizing the filling state measurement. The limit state means that each filling passage is 100% filled, which can be determined by the measured pressure difference between feeding and discharging, and can be checked by the grating signal from gratings, reflective sensors, etc., set in the filling passage.

[0021] Another solution to the aforementioned task is a spinning preparation machine for processing fiber bundles, wherein the spinning preparation machine can be erected or is already erected on a fixed base plate, and has: a plurality of filling channels arranged side by side; a feeding channel disposed above the filling channels, connected to a central fiber bundle inlet on the input side and having a base plate opening for each filling channel on the output side; a plurality of locking mechanisms disposed in the feeding channel, the locking mechanisms being adjustable by means of an adjuster; a control unit configured to operate the adjuster to fill the filling channels with fiber bundles such that only one base plate opening is always connected to the central fiber bundle inlet based on the adjusted position of the locking mechanisms at the same time; and a discharge device disposed below the filling channels, the discharge device being connected to the filling channels on the input side and connected to the central fiber bundle discharge section on the output side. The spinning preparation machine is configured to implement the method and has a weighing device signal-connected to the control unit, the weighing device being disposed in the force line between the filling channels and the fixed base plate. The spinning preparation machine according to the invention produces the same advantages as those described in conjunction with the method according to the invention, and thus reference is made briefly here to the above description. It goes without saying that all the aforementioned embodiments of the method can be adapted to the spinning preparation machine and vice versa.

[0022] The locking mechanism can be constructed as a pivotable valve, a rotating slider, etc., which can be arranged in the feed channel. Specifically, each locking mechanism can be moved to at least two adjustment positions. In the closed position, the corresponding locking mechanism blocks the bottom plate opening in the feed channel assigned to that locking mechanism, thus preventing the filling channel connected to the bottom plate opening from being filled. In the open position, the corresponding locking mechanism opens the bottom plate opening assigned to that locking mechanism and allows filling of the connected filling channel. The feed channel is blocked by the locking mechanism in the open position of the downstream now-open bottom plate opening. Based on this arrangement of the locking mechanisms, the last bottom plate opening in the feed channel along the feed direction does not require a locking mechanism. In other words, in the case of (n) bottom plate openings, it is sufficient to provide (n-1) locking mechanisms. As a result, at any given time, only one bottom plate opening can always be connected to the central fiber bundle inlet. Preferably, it is not possible to fill multiple filling channels simultaneously.

[0023] The spinning preparation machine can be, for example, a fiber mixer configured as a channel mixer. The fiber mixer may have multiple filling channels arranged side-by-side or sequentially along the feed direction. Fiber bundles can be filled into the individual filling channels via feed channels extending above the filling channels. The transport of the fiber bundles can be pneumatic, for example by means of one or more exhaust fans connected to the feed channels. In the feed channels, a locking mechanism, such as a valve, particularly a rotary slider, can be provided for each filling channel, wherein the locking mechanism can be opened and closed by a control unit. For this purpose, each locking mechanism can cooperate with a corresponding adjuster or actuator that can be coupled to the controller. Furthermore, the spinning preparation machine may have a roller discharge device below the filling channels to allow for the emptying of the filling channels. Here, all filling channels can be emptied simultaneously. In a known manner, the discharge device may include an inlet roller and a downstream opening roller. Below the discharge device, a suction device that operates by means of fresh air delivery can be connected to transport the mixed fiber bundle to the next processing machine, particularly another spinning preparation machine.

[0024] In particular, the spinning preparation machine has at least three, and preferably at least four, support points for erection on a fixed base plate. The spinning preparation machine particularly has a lower structure and a frame, wherein the frame is supported on the fixed base plate by means of the lower structure. To enable the frame to be oriented relative to the base plate, the lower structure may particularly have height-adjustable support feet. The filling passage can be fixed to the frame.

[0025] For reliable measurement of fill status, according to the invention, the mass should be determined by weight measurement using a weighing device, preferably comprising multiple weighing units. Based on the structure of the spinning preparation machine, measurement of the entire spinning preparation machine can be provided. In a configuration that functions as a channel mixer, measurement of each channel is theoretically possible; however, it is preferable to measure the entire spinning preparation machine using calculations of the fill or fill status of each channel.

[0026] The weighing unit can be constructed, for example, as a shear bar weighing unit. In particular, the base of such a weighing unit is constructed as a spring element and is made of metal that deforms under force and returns to its original state upon the withdrawal of the force. This defined deformation can be recorded by strain gauges mounted on the base and converted into electrical signals.

[0027] In its simplest embodiment, the weighing unit may also include a strain gauge that can be directly mounted to a support member of the lower structure of the spinning preparation machine. Mechanical loads are generated on the lower structure by filling or emptying the filling passage, which, for example, causes material deformation in the support legs and can be detected by the weighing unit.

[0028] In particular, the spinning preparation machine has at least four support points for standing on a fixed base plate, wherein the weighing device has multiple weighing units, which are installed on only a portion of the support points, wherein the support points equipped with the weighing units are located on an imaginary connecting line, which is oriented parallel to the main axis of the spinning preparation machine.

[0029] According to one embodiment, the weighing unit can be disposed between the frame and the fixed base plate.

[0030] According to another embodiment, the spinning preparation machine may have a separating device having at least four support points for erecting on a fixed base plate, wherein the frame and the separating device are structurally separated from each other, and a weighing unit is disposed between the separating device and the frame.

[0031] To eliminate interference affecting the measurement accuracy of the weighing equipment, the pipes used for feeding and discharging (such as fiber bundle inlets and / or fiber bundle outlets) can be separated, through which the spinning preparation machine can be connected to an upstream or downstream spinning preparation machine. This avoids force diversion. The separation can be achieved, for example, through seals, flexible hoses, and the like. Similarly, the maintenance platform of the spinning preparation equipment, which can be fixedly mounted to the spinning preparation machine, can be separated to eliminate additional loads and vibrations as the maintenance platform travels towards the weighing equipment and force diversion components. Attached Figure Description

[0032] Preferred embodiments are described below with reference to the accompanying drawings. Referring to the description of the drawings, the same reference numerals may be used in the various drawings to refer to similar or technically corresponding elements. In the figures:

[0033] Figure 1 A longitudinal sectional view of a spinning preparation machine according to a first embodiment of the present invention is shown.

[0034] Figure 2 Shown in a magnified view Figure 1 Details circled in the center (II);

[0035] Figure 3 A top view of a spinning preparation machine with a weighing system according to one embodiment is shown; and

[0036] Figure 4 A top view of a spinning preparation machine with a weighing system according to another embodiment is shown.

[0037] Figure 5 A flowchart illustrating a method for measuring fill state by gravimetric method for a spinning preparation machine; and

[0038] Figure 6 A longitudinal sectional view of a spinning preparation machine according to a second embodiment of the present invention is shown.

[0039] 1. A method for measuring the filling state of a spinning preparation machine (1) for processing fiber bundles (2) that can be erected or is already erected on a fixed base plate (3), wherein the spinning preparation machine (1) has: a plurality of side-by-side filling channels (5) for fiber bundles (2); a feeding channel (6) provided above the filling channels (5), the feeding channel being connected on the input side to a central fiber bundle inlet (9) and having a base plate opening (7) on the output side for each filling channel (5); a plurality of locking mechanisms (11) provided in the feeding channel (6) and adjustable by means of an adjuster (36); and a control unit (37) configured for... The method comprises: a control adjuster (36) for filling the filling channel (5) with fiber bundles (2) such that only one bottom plate opening (7) is always connected to the central fiber bundle inlet (9) at the same time based on the adjustment position of the locking mechanism (11); a discharge device (34) provided below the filling channel (5), the discharge device being connected to the filling channel (5) on the input side and to the central fiber bundle outlet (18) on the output side; and a weighing device (26) signal-connected to the control unit (37), the weighing device being disposed in the force line between the filling channel (5) and the fixed bottom plate (3), wherein the method comprises the following method steps:

[0040] 1) During the filling and / or emptying process, the change in weight is measured at defined time intervals by means of a weighing device (26);

[0041] 2) The control unit (37) calculates the change in filling weight of the filling passage (5) based on the change in weight within a defined time interval;

[0042] 3) The filling state of the filling channel (5) is calculated by the control unit (37), wherein the change in filling weight is distributed to the at least one filling channel (5), which is connected to the fiber bundle entry part (9) based on the adjustment position of the locking mechanism (11) within a defined time interval.

[0043] 2. The method according to embodiment 1, characterized in that steps 1) to 3) of the method are repeated during the filling process and / or emptying process.

[0044] 3. The method according to embodiment 1 or 2, characterized in that the discharge device (34) has an inlet roller pair (35) for each filling channel (5), wherein the control unit (37) takes into account the inlet roller rotation speed of the inlet roller pair (35) to calculate the filling state.

[0045] 4. The method according to embodiment 3 is characterized in that the control unit (37) calculates the output of the spinning preparation machine (1) and the speed of the inlet roller by means of the change in weight measured by the weighing device (26) during a time window when no material is fed into the filling channel (5).

[0046] 5. A spinning preparation machine (1) for processing fiber bundles (2), wherein the spinning preparation machine (1) can be erected or is erected on a fixed base plate (3) and has: a plurality of filling channels (5) arranged side by side; a feeding channel (6) arranged above the filling channels (5), the feeding channel being connected to a central fiber bundle inlet (9) on the input side and having a base plate opening (7) for each filling channel (5) on the output side; a plurality of locking mechanisms (11) arranged in the feeding channel (6), the locking mechanisms being adjustable by means of an adjuster (36); and a control unit (37) configured to operate the adjuster (36) for filling with fiber bundles (2). The filling channel (5) is such that only one bottom plate opening (7) is always connected to the central fiber bundle entry part (9) at the same time based on the adjustment position of the locking mechanism (11); and the discharge device (34) is provided below the filling channel (5), the discharge device being connected to the filling channel (5) on the input side and to the central fiber bundle discharge part (18) on the output side, characterized in that the spinning preparation machine (1) is configured to implement the method according to one of embodiments 1 to 4, and has a weighing device (26) signal-connected to the control unit (37), the weighing device being provided in the force line between the filling channel (5) and the fixed bottom plate (3).

[0047] 6. The spinning preparation machine (1) according to embodiment 5 is characterized in that the spinning preparation machine (1) has at least three support points (24) for standing on a fixed base plate (3), wherein the weighing device (26) has a weighing unit (27) for each support point (24), the weighing unit being installed on the corresponding support point (24).

[0048] 7. The spinning preparation machine (1) according to embodiment 5 is characterized in that the spinning preparation machine (1) has at least four support points (24) for erecting on a fixed base plate (3), wherein the weighing device (26) has a plurality of weighing units (27), the weighing units are installed on only a portion of the support points (24), wherein the support points (24) equipped with the weighing units (27) are located on an imaginary connecting line (39), the connecting line being oriented parallel to the main axis (38) of the spinning preparation machine (1).

[0049] 8. The spinning preparation machine (1) according to any one of embodiments 5 to 7, characterized in that the spinning preparation machine (1) has a frame (19) and the filling channel (5) is fixed on the frame.

[0050] 9. The spinning preparation machine (1) according to embodiment 8 is characterized in that the weighing unit (27) is disposed between the frame (19) and the fixed base plate (3).

[0051] 10. The spinning preparation machine (1) according to embodiment 8 is characterized in that the spinning preparation machine (1) has a separation device (21) having at least four support points (24) for erecting on a fixed base plate (3), wherein the frame (19) and the separation device (21) are structurally separated from each other, and the weighing unit (27) is disposed between the separation device (21) and the frame (19). Detailed Implementation

[0052] exist Figure 1 The image shows a spinning preparation machine 1 for processing fiber bundles 2 according to a first embodiment. The spinning preparation machine is constructed as a tunnel mixer and can be integrated into the cleaning line of a spinning mill in a known manner.

[0053] To clarify the spatial orientation of the spinning preparation machine 1, Figure 1 The longitudinal direction X, transverse direction Y, and height direction Z are drawn in the diagram. They are defined in the sense of the Cartesian coordinate system assigned to the spinning preparation machine 1 and are indicated by corresponding arrows. Concepts such as "below," "under," "above," or "above" here indicate spatial descriptions with respect to the height direction Z. The spinning preparation machine 1 can be erected on a fixed base plate 3, which lies in a horizontal plane opened by the longitudinal direction X and the transverse direction Y.

[0054] The spinning preparation machine 1 has a fiber bundle reservoir 4, which is divided into multiple, exemplary six filling channels 5 (5.1, 5.2, 5.3, 5.4, 5.5, 5.6) arranged side-by-side or sequentially along the feeding direction A. The fiber airflow feeding direction or transport direction is... Figure 1 The arrow A is used to indicate this. The filling passages 5 are spatially separated from each other by perforated partition walls 33.

[0055] Above the filling channel 5, a feeding device with a feeding channel 6 and a locking mechanism 11 (11.1, 11.2, 11.3, 11.4, 11.5) is provided in the feeding channel 6. The filling channel 5 is connected to the feeding channel 6 extending above the filling channel 5, which has a bottom plate opening 7 (7.1, 7.2, 7.3, 7.4, 7.5, 7.6) for filling the filling channel 5 with fiber bundles 2. The inlet 8 of the feeding channel 6 is flow-conductively connected to a central fiber bundle inlet 9, which is tubularly designed and can be connected to an upstream spinning preparation machine (not shown) on the input side. The fiber bundles 2 are pneumatically transported through the fiber bundle inlet 9 into the feeding channel 6 by means of an exhaust fan 10 via the inlet 8.

[0056] A circulating air valve 41 is provided in the feeding channel 6 between the inlet 8 and the bottom plate opening 7 along the feeding direction A. In its open position, the circulating air valve opens a flow-guiding connection between the inlet 8 and the circulating air channel 40. In the open position, the circulating air valve 41 pivots into the feeding channel 6, and the feeding channel is locked downstream of the circulating air valve 41. Figure 1 The diagram shows the recirculating air valve 41 in its closed position, in which the recirculating air duct 40 is blocked and the feed passage 6 is open. The recirculating air valve 41 can be moved from the open position to the closed position by means of an adjuster, and vice versa. When material is required, the recirculating air valve 41 is in its closed position so that fiber bundles 2 can be supplied to the filling passage 5. If there is no material requirement, the recirculating air valve 41 is moved to its open position, in which delivery air, correspondingly not transporting any fiber bundles, is guided through the recirculating air duct 40 through the filling passage 5.

[0057] The adjustment position of the locking mechanism 11 located in the feed channel 6 can be adjusted by means of an adjuster 36. The adjuster 36 can be a pneumatic adjuster, wherein alternatives such as an electromechanical adjuster or a hydraulic adjuster are also possible. The spinning preparation machine 1 also has a control unit 37, which is configured to operate the adjuster 36 to selectively fill the filling channel 5 with fiber bundles 2, such that based on the adjustment position of the locking mechanism 11, only one of the bottom plate openings 7 is always connected to the central fiber bundle inlet 9 at any given time. Based on the arrangement of the locking mechanisms 11, only five locking mechanisms 11 are required for the six filling channels 5 (here). In addition, the control unit 37 is configured to operate an adjuster for the circulating air valve 41 to move the circulating air valve 41 to its closed position when material requirements dictate, so that the fiber bundles 2 can flow through the inlet 8 to the separately open bottom plate openings 7. Each locking mechanism 11 can be moved into two adjustment positions by means of the provided adjuster 36, namely, into its open position and closed position, as described in detail below.

[0058] Specifically, one of the locking mechanisms 11.1, 11.2, 11.3, 11.4, and 11.5 is respectively installed at the bottom plate openings 7.1, 7.2, 7.3, 7.4, and 7.5 of the first five filling channels 5.1, 5.2, 5.3, 5.4, and 5.5 along the feeding direction A. Figure 1 As shown, based on existing material requirements, fiber bundle 2 is transported into feed channel 6 via fiber bundle inlet 9 by means of conveying air A flowing along feed direction A. Circulating air valve 41, in its closed position, blocks circulating air channel 40 and opens feed channel 6. First locking mechanism 11.1, in its open position along feed direction A, allows fiber bundle 2, flowing into feed channel 6 through inlet 8, to pass through first bottom plate opening 7.1 and flow into first filling passage 5.1. First locking mechanism 11.1, in its open position, thus pivots into feed channel 6 such that feed channel 6 is blocked downstream of first bottom plate opening 7.1 by first locking mechanism 11.1. In this way, fiber bundle 2 can only be transported into first filling passage 5.1.

[0059] If the second filling channel 5.2 is to be filled, the first locking mechanism 11.1 moves to its closed position, in which it blocks the first bottom plate opening 7.1 and opens the feed channel 6 downstream of the first bottom plate opening 7.1. Then the second locking mechanism 11.2 moves to its open position, in which the fiber bundle 2 flowing into the feed channel 6 through the inlet 8 flows through the second bottom plate opening 7.2 into the second filling channel 5.2, and the feed channel 6 downstream of the second bottom plate opening 7.2 is now blocked by the second locking mechanism 11.2. The filling of the other filling channels 5.3, 5.4, and 5.5 is carried out in a similar manner.

[0060] The locking mechanism 11 is not installed only at the last bottom plate opening 7.6. If the last filling passage 5.6 is to be filled, the locking mechanisms 11.1, 11.2, 11.3, 11.4, and 11.5 at the upstream bottom plate openings 7.1, 7.2, 7.3, 7.4, and 7.5 must be moved to their closed positions, which will block the upstream bottom plate openings 7.1, 7.2, 7.3, 7.4, and 7.5 and open the feeding passage 6.

[0061] A discharge device 34 is provided at the lower end of the fiber bundle reservoir 4. This discharge device has a metering feed device 12 for each filling channel 5, so that the corresponding filling channel 5 can be emptied in a controlled manner. The corresponding metering feed device 12 has a pair of inlet rollers 35 with two inlet rollers 13, 14, and may also include an opening roller 15 disposed below the pair of inlet rollers 35. All inlet rollers 13, 14 can be rotatably driven by a common driver and preferably rotate at the same inlet roller speed. In particular, the fiber bundle 2 is simultaneously removed from the filling channel 5 by means of the discharge device 34.

[0062] Below the discharge device 34, a suction device, for example operating with fresh air supply L, can be connected to transport the mixed fiber bundle 2 to the next processing machine on the cleaning line, particularly another spinning preparation machine (not shown). For this purpose, a mixing channel 16 can be connected below the metering feed device 12, extending longitudinally X across the filling channel 5, to pneumatically transport the removed fiber bundle 2 via outlet 17 through a flow-conductively connected fiber bundle discharge section 18 to a downstream spinning preparation machine (not shown) on the cleaning line. The fiber bundle discharge section 18 can be supported on a fixed base plate 3 by a tube holder 32.

[0063] The spinning preparation machine 1 also includes a frame 19, a fiber bundle storage 4, and a mixing channel 16 fixed to the frame. The fiber bundle storage 4 has a filling channel 5, a feeding channel 6 disposed thereon, and a discharge device 34. Furthermore, the machine housing 20 can be fixed to the frame 19. The frame 19 is supported on a fixed base plate 3 at a plurality of (four exemplary here) support points 24. To enable the frame 19 to be oriented relative to the base plate 3, each of the support points 24 is provided with a particularly height-adjustable support foot 25.

[0064] In order to measure the filling state by weight, the spinning preparation machine 1 has a weighing device 26 that is signal-connected to the control unit 37 so that the filling weight of the fiber bundle 2 can be calculated by measuring the change in weight during the operation of the spinning preparation machine 1.

[0065] The weighing device 26 has multiple weighing units 27. The weighing units 27 can be disposed on all or at least some of the support points 24 between the frame 19 and the fixed base plate 3. To avoid tension in the frame 19 due to thermal expansion and the resulting measurement errors, it is advantageous that the supports allow horizontal movement, for example by means of vibration damping elements 28.

[0066] The weighing unit 27 can be directly installed in the frame 19, especially in particular Figure 2 As can be seen from the diagram. Therefore, the weighing unit can be integrated into existing machine structures. The weighing unit 27 can be positioned between the frame 19 and, in particular, the height-adjustable support legs 25. Accordingly, the frame 19 is supported on the support legs 25 by the weighing unit 27. According to the example shown, the weighing unit 27 can be fixed to the inner surface of the base plate 3, which is fixed at a position opposite to the frame profile of the frame 19. The corresponding weighing unit 27 can be fixed to the end of the frame 19 opposite to the point of action of the support legs 25. The weighing unit 27 can be, for example, a shear bar weighing unit. Alternatives are possible, such that the weighing unit 27 can be constructed as, for example, a pressure weighing unit, a bending bar weighing unit, a double shear bar weighing unit, or a simple strain gauge. The weighing unit 27 can be mounted on all support points 24. Accordingly, the spinning preparation machine 1 may have, for example, four weighing units 27 in a configuration having six filling channels 5 and, for example, six weighing units 27 in a configuration having ten filling channels 5.

[0067] Instead of being integrated into the frame 19, the weighing unit 27 can also be directly mounted on the fixed base plate 3, and the support foot 25 can be placed on the weighing unit 27.

[0068] exist Figure 3 The diagram shows one embodiment of the spinning preparation machine 1, in which the weighing unit 27 is provided at all (four in this case) the support points 24. In order to generate the defined four-point support and thus be able to perform calculations by means of force balance and torque balance, it is advantageous to provide spring-elastic elements, such as damping elements 28, at the support points 24.

[0069] exist Figure 4 The diagram shows the spinning preparation machine 1 for... Figure 3In an alternative implementation, the weighing unit 27 is not located on all support points 24, but only on a portion of the support points 24.1, 24.2. The support points 24.1, 24.2 equipped with the weighing unit 27 are located only on one side of the main axis 38 extending parallel to the longitudinal axis X of the spinning preparation machine 1. In particular, the support points 24.1, 24.2 equipped with the weighing unit 27 are located on an imaginary connecting line 39, which is oriented parallel to the main axis 38. Therefore, no weighing unit 27 is provided at the other support points 24.3, 24.4 located on the other side of the machine. Experiments have shown that the fiber bundle 2 is uniformly distributed along the transverse axis Y in the filling passage 5 over a long period of time, thus potentially exhibiting or also being in a long-term symmetrical weight distribution over the net width of the frame. This simplifies the static calculations on a single-span beam, which represents an element that is particularly easy to calculate in statics, and whose supporting forces can be determined without the need for costly calculation methods. Therefore, the support forces generated at support points 24.1, 24.2, 24.3, and 24.4 based on the changing filling state during the operation of the spinning preparation machine 1 can be determined with minimal computational cost. In the spinning preparation machine 1 constructed as a channel mixer with six filling channels 5 (exemplarily shown here), two weighing units 27 are thus sufficient for weight measurement, which are arranged in the main shaft 38 and on the imaginary connecting line 39 when viewed from the same machine side. In the spinning preparation machine 1 constructed as a channel mixer with, for example, ten of the aforementioned filling channels 5, based on a larger extension along the machine axis (i.e., the machine length), three of the aforementioned weighing units 27 can be provided, which are arranged on the same machine side and on the imaginary connecting line 39.

[0070] To prevent the measurement results obtained by means of the weighing device 26 from being distorted by vibration, or to minimize the vibration-related interference introduced into the gravimetric measurement of the filling state, a vibration damping element, here a flexible hose element 29, is provided between the machine housing 20 and the fiber bundle inlet 9. This hose element provides a flow-guiding connection between the fiber bundle inlet 9 and the inlet 8 of the feed channel 6. Similarly, a vibration damping element, here another flexible hose element 31, is provided between the machine housing 20 and the fiber bundle outlet 18. This hose element provides a flow-guiding connection between the mixing channel 16 or outlet 17 and the fiber bundle outlet 18. The platform 30 on which the exhaust fan 10 is mounted can be erected at the end of the base plate to dampen vibrations on the vibration damping element (not shown). This also prevents force diversion, which would result in an incorrect, i.e., underweight, measurement by the weighing device 26.

[0071] exist Figure 5The method for measuring the filling state of a spinning preparation machine 1, which can be filled with fiber bundles 2, is simplified and described using a flowchart. Possible implementations are described below, in which information not only about the adjustment position of the locking mechanism 11, or the state of the valve, is also incorporated into the filling state measurement.

[0072] Following the initiation procedure 50 of the method, the control unit 37 determines the operating mode of the spinning preparation machine 1 in step 51. The operating mode can be manually predetermined by user input. For example, the spinning preparation machine 1 can operate in three different operating modes: filling operation 60, emptying operation 70, and automatic operation 80.

[0073] In the operation mode of filling run 60, a filling process occurs in which at least one filling channel 2 is filled with fiber bundles 2 and the discharge device 34 stops. For example, filling run 60 can be used to fill spinning preparation machine 1 to produce an initial reserve with fiber bundles 2.

[0074] Specifically, in step 61 of the filling operation 60, the control unit 37 queries whether there is a material requirement. This information can be provided by a higher-level controller, such as a line control device. Additionally, a material sensor can also be installed in the fiber bundle inlet 9. As an additional value, the status of the inlet rollers 13 and 14, which should subsequently be shut down, can be queried. The filling weight of the fiber bundle 2 in the fiber bundle reservoir 4 can be calculated by subtracting a predetermined net weight or tare weight from the weight (total weight) measured by the weighing device 26 at the beginning of a defined time interval (starting point: t=0 seconds). The control unit 37 calculates the mass difference generated during the filling of the filling channel 5 within the defined time interval, after subtracting the weight measured at the starting point from the weight measured at the end of the defined time interval (ending point; e.g., t=5 seconds). The defined time interval can be, for example, one to five seconds, wherein longer or shorter time intervals are also possible. Preferably, during the operation of the spinning preparation machine 1, the measurement of weight change is continuously repeated within a defined time interval, i.e., always starting from the beginning again and again, so that the change in filling weight can be repeatedly calculated and the filling state of the filling channel 5 can be calculated based on this. Through the aforementioned control of the locking mechanism 11, only one filling channel 5 can always be filled simultaneously. Therefore, in step 62, the control unit 37 can calibrate which filling channel 5 was opened for how long within the defined time interval, and which filling channel 5 has therefore been supplied with fiber bundle 2. Because only one filling channel 5 can be filled at any given time, the corresponding proportion of the measured weight difference can be allocated to the corresponding filling channel 5.

[0075] In the evacuation operation 70 mode, an evacuation process occurs during which no fiber bundle 2 is fed, and the discharge device discharges the fiber bundle 2 from the filling passage 5. The evacuation operation 70 can be used, for example, to remove residual fiber bundle 2 from the spinning preparation machine 1 and, in particular, from the filling passage 5 during material changes. In other words, there is no material requirement in the evacuation operation 70, i.e., no fiber bundle 2 reaches the feeding channel 6 via the fiber bundle inlet 9, and the filling passage 5 is simply evacuated.

[0076] Specifically, in step 71 of the emptying operation 70, the control unit 37 queries the status of the inlet rollers 13 and 14, specifically whether the inlet rollers 13 and 14 are rotating and at what inlet roller speed they are driven to rotate. In step 72, the control unit 37 calculates the filling state of the filling channels 5. To this end, as previously described in the example of filling operation 60, the control unit 37 calculates the change in filling weight over a defined time interval. Based on the weight change detected using the weighing device 26, a mass difference is calculated, which is therefore a negative weight difference in the emptying operation 70. By simultaneously discharging the fiber bundle 2 from all filling channels 5 through the discharge device 34, the mass difference can be evenly distributed across all filling channels 5. In other words, the same amount of filling is emptied from all filling channels 5. Based on the identical construction of the inlet rollers 13 and 14, they are coupled with a common drive technology, and therefore the inlet rollers rotate at the same speed. Conversely, if the inlet rollers 13 and 14 in the respective filling channels 5 are equipped with their own individual drives, it is possible to determine whether a filling channel 5 is emptied. Therefore, filling channels 5 can be emptied during emptying operations, where partial or complete emptying of filling channels 5 is possible.

[0077] Whenever feeding into the filling passage 5 is not performed and the fiber bundle 2 is removed from the filling passage 5 via the discharge device 34, i.e., during the pure evacuation process, the control unit 37 can calculate the output of the spinning preparation machine 1 and the input roller speed during such time intervals. Based on this, the control unit 37 can derive the output for other speeds. For this purpose, for example, a speed-related output curve can be stored in the control unit 37.

[0078] In the automatic operation mode 80 that is typically present during the operation of the spinning preparation machine 1, the following situations can be identified or may occur:

[0079] - Filling process (see Fill Run 60);

[0080] - Drainage process (see Drainage Operation 70); or

[0081] - Simultaneous filling and emptying processes (see Fill Run 60 and Empty Run 70).

[0082] In step 81 of the automatic operation 80, the control unit 37 queries the status of the inlet rollers 13 and 14. When the inlet rollers 13 and 14 are driven to rotate, the filling passage 5 is emptied. Furthermore, in step 82, it is checked whether there is a material requirement. If there is a material requirement, filling is performed. The actual material flow entering the feed channel 6 through the fiber bundle inlet 9 can optionally be confirmed using other sensors in the pipe, such as those in the fiber bundle inlet 9. Although a material requirement may exist in the filling mode, the fiber bundle 2 may not yet have been supplied by the upstream spinning preparation machine. In this case, the weight change measured by the weighing device 26 can indicate a disturbance.

[0083] In the case of pure emptying during automatic operation (emptying process), the output of the spinning preparation machine 1 and the speed of the inlet roller are periodically determined by the control unit 37. This is always done advantageously when the filling passage 5 is as full as possible, i.e., at least 50% full. This can be determined, for example, by differential pressure measurement and / or grating. By means of the change in total weight, the corresponding output of fiber material 2 can be determined according to the speed of the inlet roller.

[0084] In the case of simultaneous filling and emptying, in addition to information regarding the adjustment position of the locking mechanism 11, the mass difference measured by means of the weighing device 26, and the state of the inlet rollers 13 and 14, the weight distribution among the weighing units 7, as measured by the weighing device 26, can also be considered. This weight distribution is caused by the varying filling of the filling channel 5 along the machine length. Here, the signal from each weighing unit 27 is used individually. In the case of simultaneous filling and emptying in automatic mode, the previously determined output related to the inlet roller speed can be used. Together with the change in total weight, the weight of the conveyed fiber bundle 2 can be determined.

[0085] In step 83, when the control unit 37 calculates the filling state of the filling channels 5 according to the adjustment position of the locking mechanism 11 in the corresponding time interval, the mass difference based on the change in filling weight, measured by the weighing device 26 during automatic operation in the time interval of repeated start (this time interval may be, for example, 5 seconds), is taken into consideration. Furthermore, the output of the spinning preparation machine 1 is considered, since the fiber bundle 2 is discharged through the discharge device 34. Through the aforementioned control of the locking mechanism 11, only one filling channel 5 can always be filled simultaneously. Therefore, in step 83, the control unit 37 can calibrate which filling channel 5 was opened for how long within the defined time interval, and thus which filling channel 5 the fiber bundle 2 has reached. Because only one filling channel 5 can be fed at any given time, the corresponding proportion of the weight difference measured in the time interval can be allocated to the corresponding filling channel 5.

[0086] In step 90, the calculated filling status of the filling passage 5 is output, for example, on a display on the spinning preparation machine 1 and / or via a data interface for remote display, such as a portable or fixed terminal.

[0087] An exemplary process for automatically running 80:

[0088] Steps 81 and 82 indicate that no fiber bundle 2 is conveyed via the fiber bundle inlet 9, and the rollers 13 and 14 rotate. Therefore, the filling channel 5 is emptied (emptying process). Within a defined time interval, the weight loaded by the weighing device 26, and particularly by the weighing unit 27, is measured at the starting point t=0 and at the ending point (here, for example, after 5 seconds). As in Figure 3 As shown, if all support points 24 are equipped with weighing units 27, the sum of all measured weights is the total weight. Figure 4 As shown, if the weighing unit 27 is located on only one side of the machine, that is, only half of the support points 24 are equipped with the weighing unit 27, the sum of all measured weights multiplied by a factor of 2 gives the weight value (total weight). The fill weight is obtained by subtracting the net weight from the weight value.

[0089] - Filling weight 1 provides m = 100 kg at time point t = 0.

[0090] - Filling weight 2 provides m=99kg at time point t=5 seconds [s].

[0091] - Calculate the output: 720 kg / h at the current inlet roller speed, which may be equal to 70% of the maximum inlet roller speed.

[0092] In the additional automatic operation 80, material conveying now takes place, i.e., fiber bundle 2 is conveyed into feed channel 6 via fiber bundle inlet 9. In step 83, the measured weight difference, i.e., the change in filling weight, can now be specifically distributed to each filling channel 5 according to the adjustment position of locking mechanism 6. Furthermore, the filling channel 5 is emptied, i.e., the inlet rollers 13 and 14 are rotatably driven. Thus, filling and emptying (filling process and emptying process) of filling channel 5 occur simultaneously. At repeated, restarted, defined time intervals, at the starting point t=20 and the ending point (exemplarily after 5 seconds here), the weight loaded by weighing device 26, in particular weighing unit 27, is measured, and the filling weight at the starting point and the ending point is calculated as described above.

[0093] - Filling weight 1 provides m=100 kg at time point t=0.

[0094] - Filling weight 2 provides m=101kg at time point t=5s.

[0095] -When the roller speed is kept constant at 70% of the roller speed, the output is 720 kg / h (output value during the evacuation process).

[0096] - Calculation of filling weight variation:

[0097]

[0098] - In step 83, the mass difference (change in filling weight) is distributed to filling channels 5.1, 5.2, 5.3, 5.4, and 5.5 to calculate the filling state. For this purpose, 2 kg of conveying mass is distributed to the filling channel 5, which is connected to the central fiber bundle entry section 9 within a defined time interval based on the adjustment position of the locking mechanism 11 within a defined time interval.

[0099] The calculated individual channel filling can also be periodically calibrated with pressure signals and / or gratings as reference points and corrected as necessary.

[0100] exist Figure 6 The diagram shows a spinning preparation machine 1 according to a second embodiment, which corresponds to the embodiment described above to the greatest extent possible, thus referring to the above description of commonalities. The difference lies in the construction of the lower structure on which the frame 19 is supported.

[0101] A separation device 21 is provided below the frame 19, which serves as the base of a machine structure 22, including the frame 19, a fiber bundle storage 4 with a filling passage 5 and a feeding channel 6, and a machine housing 20. The frame 19 and, in another embodiment, the entire machine structure 22, are supported or erected on the separation device 21, spaced apart from a fixed base plate 3. The separation device 21 can be designed, for example, as a continuous intermediate frame 23, which here exemplarily has four support points 24 for erection on the fixed base plate 3. It goes without saying that additional support points 24 can be added in the case of a larger or heavier spinning preparation machine, or that in the case of a smaller spinning preparation machine, three support points 24 in principle also ensure reliable support. At each support point 24, a particularly height-adjustable support foot 25 is provided to orient the separation device 21 relative to the base plate 3.

[0102] A weighing device 26 for measuring the filling state of the fiber bundle storage 4 by gravimetric method is provided between the intermediate frame 23 and the frame 19. This weighing device 26 is positioned along the force line between the filling channel 5 and the fixed base plate 3. Specifically, as shown here, the weighing device 26 may have multiple weighing units 27 on which the weight of the machine structure 22 is supported. A vibration damping element 28 may be provided between the weighing units 27 and the separation device 21 (exemplarily the intermediate frame 23). To prevent the measurement results obtained by means of the weighing device 26 from being distorted by vibrations of the exhaust fan 10, the platform 30 for the exhaust fan 10 may be supported on the separation device 21. The tube holder 32 for the fiber bundle discharge section 18 may be supported on the intermediate frame 23.

[0103] Figure Labels

[0104] 1. Spinning preparation machine

[0105] 2 fiber bundles

[0106] 3 base plates

[0107] 4 Fiber bundle storage

[0108] 5. Filling tunnel

[0109] 6 feeding channels

[0110] 7. Bottom plate opening

[0111] 8 Imports

[0112] 9 Fiber bundle entry section

[0113] 10 rows of fans

[0114] 11 Locking Mechanism

[0115] 12 Metering Feeding Device

[0116] 13 Introducing Roller

[0117] 14 Introducing Roller

[0118] 15 opening rollers

[0119] 16-channel mixing

[0120] 17 Exports

[0121] 18 Fiber bundle discharge section

[0122] 19 racks

[0123] 20 Machine casing

[0124] 21 Separation Device

[0125] 22 Machine Structure

[0126] 23. Intermediate Framework

[0127] 24 support points

[0128] 25 support feet

[0129] 26 Weighing Equipment

[0130] 27 weighing units

[0131] 28 vibration damping elements

[0132] 29 Hose Components

[0133] 30 Platform

[0134] 31 Hose Components

[0135] 32 tube retainer

[0136] 33 partition wall

[0137] 34 Discharge device

[0138] 35 introduction roller pair

[0139] 36 Adjusters

[0140] 37 control unit

[0141] 38 main axis

[0142] 39 connecting cable

[0143] 50 start

[0144] 51 steps

[0145] 60 fill run

[0146] 61 steps

[0147] 62 steps

[0148] 70 Emptying Operation

[0149] 71 steps

[0150] 72 steps

[0151] 80 Automatic Operation

[0152] 90 output

[0153] A. Feeding direction or transport direction

[0154] L Fresh Air Delivery

[0155] X longitudinal direction

[0156] Y-direction (horizontal direction)

[0157] Z-axis

Claims

1. A method for measuring the filling state by weight of a spinning preparation machine (1) for processing fiber bundles (2) that can be erected or is already erected on a fixed base plate (3), characterized in that, The spinning preparation machine (1) has: a plurality of side-by-side filling channels (5) for fiber bundles (2); a feeding channel (6) above the filling channels (5), the feeding channel being connected to a central fiber bundle inlet (9) on the input side and having a bottom plate opening (7) for each filling channel (5) on the output side; a plurality of locking mechanisms (11) in the feeding channel (6) that can be adjusted by means of an adjuster (36); and a control unit (37) configured to operate the adjuster (36) for filling the filling channels (5) with fiber bundles (2), such that... Only one of the bottom plate openings (7) is always connected to the central fiber bundle inlet (9) at the same time based on the adjustment position of the locking mechanism (11); a discharge device (34) is provided below the filling channel (5), the discharge device is connected to the filling channel (5) on the input side and to the central fiber bundle outlet (18) on the output side; and a weighing device (26) is signal-connected to the control unit (37), the weighing device is arranged in the force line between the filling channel (5) and the fixed bottom plate (3), and wherein the method includes the following method steps: 1) During the filling and / or emptying process, the change in weight is measured at defined time intervals by means of a weighing device (26); 2) The control unit (37) calculates the change in filling weight of the filling passage (5) based on the change in weight within a defined time interval; 3) The filling state of the filling channel (5) is calculated by the control unit (37), wherein the change in filling weight is distributed to at least one filling channel (5), which is connected to the fiber bundle entry part (9) based on the adjustment position of the locking mechanism (11) within a defined time interval.

2. The method according to claim 1, characterized in that, During the filling and / or emptying process, repeat steps 1) to 3).

3. The method according to claim 1 or 2, characterized in that, The discharge device (34) has an inlet roller pair (35) for each filling channel (5), wherein the control unit (37) takes into account the inlet roller rotation speed of the inlet roller pair (35) to calculate the filling state.

4. The method according to claim 3, characterized in that, The control unit (37) calculates the output of the spinning preparation machine (1) and the speed of the inlet rollers based on the change in weight measured by means of a weighing device (26) during a time window when no material is fed into the filling channel (5).

5. A spinning preparation machine (1) for processing fiber bundles (2), wherein, The spinning preparation machine (1) can be erected or is already erected on a fixed base plate (3) and has: a plurality of filling channels (5) arranged side by side; a feeding channel (6) arranged above the filling channels (5), the feeding channel being connected to a central fiber bundle inlet (9) on the input side and having a base plate opening (7) for each filling channel (5) on the output side; a plurality of locking mechanisms (11) arranged in the feeding channel (6), the locking mechanisms being adjustable by means of an adjuster (36); and a control unit (37) configured to operate the adjuster (36) for filling the filling channels (5) with fiber bundles (2), such that the base plate opening (7) is adjusted by means of an adjuster (36) to adjust the filling channel (5) to make the filling channel (5) open. The bottom plate opening (7) is always connected to the central fiber bundle entry part (9) at the same time based on the adjustment position of the locking mechanism (11); and the discharge device (34) is provided below the filling channel (5), the discharge device is connected to the filling channel (5) on the input side and to the central fiber bundle discharge part (18) on the output side, characterized in that the spinning preparation machine (1) is configured to carry out the method according to any one of claims 1 to 4, and has a weighing device (26) signal-connected to the control unit (37), the weighing device being arranged in the force line between the filling channel (5) and the fixed bottom plate (3).

6. The spinning preparation machine (1) according to claim 5, characterized in that, The spinning preparation machine (1) has at least three support points (24) for standing on a fixed base plate (3), wherein the weighing device (26) has a weighing unit (27) for each support point (24), the weighing unit being installed on the corresponding support point (24).

7. The spinning preparation machine (1) according to claim 5, characterized in that, The spinning preparation machine (1) has at least four support points (24) for standing on a fixed base plate (3), wherein the weighing device (26) has a plurality of weighing units (27) which are installed on only a portion of the support points (24), wherein the support points (24) equipped with the weighing units (27) are located on an imaginary connecting line (39) which is oriented parallel to the main axis (38) of the spinning preparation machine (1).

8. The spinning preparation machine (1) according to claim 5, characterized in that, The spinning preparation machine (1) has a frame (19) and the filling channel (5) is fixed on the frame.

9. The spinning preparation machine (1) according to claim 6 or 7, characterized in that, The spinning preparation machine (1) has a frame (19) and the filling channel (5) is fixed on the frame.

10. The spinning preparation machine (1) according to claim 9, characterized in that, The weighing unit (27) is disposed between the frame (19) and the fixed base plate (3).

11. The spinning preparation machine (1) according to claim 9, characterized in that, The spinning preparation machine (1) has a separation device (21) having at least four support points (24) for standing on a fixed base plate (3), wherein the frame (19) and the separation device (21) are structurally separated from each other, and the weighing unit (27) is disposed between the separation device (21) and the frame (19).

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