JP5518189B2 - Sliver forming device - Google Patents

Description

  The present invention is an apparatus for forming a sliver from a fiber fleece formed at a combing location of a combing machine, wherein the fiber fleece is supplied to a clamp location of a roller pair, and the roller pair includes a roller connected to a drive device The fiber fleece is composed of a pressing roller, and the fiber fleece is gathered behind the clamp portion as viewed in the conveying direction and is supplied to a press roller pair connected to a driving device via a hopper.

  In a device known in practice, the fiber fleece formed at the combing point of the combing machine is fed to the clamping point of the roller pair and then drawn eccentrically (laterally) and fed to the hopper for sliver formation Is done. In this case, a calender roller pair connected to the driving device is placed behind the hopper (also referred to as a compressor), and the formed sliver is sent to the subsequent transport table via the calender roller pair. Such a device is disclosed, for example, in the published DE 10300037A1.

  Furthermore, in a known device according to WO 2006/012758 A1, the fiber assembly drawn and combed by the drawing device is fed to a screen drum connected to a negative pressure source for forming a fleece. This screen drum is provided with a driving device, and conveys the formed fiber fleece toward the clamp point of the drawing roller pair, through which the fiber fleece is drawn out from the screen drum and is fed to the subsequent hopper. Supplied, compressed and combined into a sliver in this hopper. Behind the hopper, the compressed fiber material is fed to a driven calender roller pair, where the sliver is further compressed.

  A similar device is also disclosed in EP 370340.

  In the known configuration, a special drive shaft is required to drive the calendar roller. Furthermore, a special guide device is required to deliver the fiber fleece from the clamping point of the drawing roller to a hopper equipped with a subsequent calendar roller. In the area of this guide device, false drafts in the fiber material and contamination by fiber suspensions can occur.

  The object of the present invention is therefore to improve the device for forming sliver from fiber fleece in a combing machine, to improve the known solution and to obtain a compact and inexpensive device while reducing the required drive shaft. .

  In order to solve this problem, in the configuration of the present invention, in the apparatus of the type described at the beginning, the fiber fleece is seen on the peripheral surface of the driven roller behind the clamped portion of the roller pair as viewed in the conveying direction. In the region, the sheet was delivered to the hopper and the subsequent press roller pair, and one press roller of the press roller pair was non-rotatably and coaxially disposed on the driven roller.

  In this case, the press roller may be directly coupled to the driven roller, or may be non-rotatably fixed to the drive shaft of the driven roller.

  When configured as in the present invention, at least one special drive shaft of the calendar roller pair can be saved. This is because one of the calendar rollers is fixed directly and coaxially to the drive shaft of the roller to which the roller pair is driven. Furthermore, according to the configuration of the present invention, the rotation speed of the roller pair forming the clamp spot and the rotation speed of the calendar roller pair are absolutely the same, so that an erroneous draft is reliably avoided. Further, since the fiber fleece is guided directly to the region of the peripheral surface of the roller to be driven, an additional guide device for the fiber fleece in the path from the clamp point to the hopper becomes unnecessary.

  The concept of “hopper” can generally be understood as a “compression element” for grouping the fiber material into a sliver, in which the sliver is then fed to a subsequent pair of calendar rollers for further compression . In this case, the hopper bears the problem of accurately supplying the sliver to the clamp location of the calendar roller pair with a corresponding design shape.

  In order to aid the guide of the fiber fleece on the peripheral surface of the driven roller, in another configuration of the invention, it extends in the region of the peripheral surface of the driven roller between the clamping point of the roller pair and the hopper. And at least one stationary guide means for the fiber fleece is arranged.

  In order to bundle the fiber fleece at the side and to deliver the bundled fiber fleece to the hopper in a defined manner, in another configuration of the invention, the guide means comprises at least one side guide, The side guide enters the fiber fleece conveying path and extends to the hopper at an acute angle with respect to the rotational axis of the driven roller.

  This construction ensures that the edge region of the fiber fleece is also guided to the hopper as desired when it is put together and without damage. The concept of “guide means extending in the region of the circumferential surface” also includes solutions that do not accurately follow the contour of the circumferential surface of the roller on which the guide means is driven. This will be described in more detail in the following embodiment.

  In order to draw the fiber fleece behind the clamping point from the rotating surface of the driven roller and to gently or gently hand it over to the hopper, in another configuration of the invention, the guide means comprises a lower guide surface. The guide surface extends in the region of the peripheral surface of the roller to be driven, and supports the fiber fleece on the lower surface when it is delivered to the hopper.

  In another advantageous configuration, the hopper and the guide means are coupled to each other. In this case, it is advantageous if the hopper and the guide means are formed as an integral molded member. With this construction, it is possible to produce a guide means with an integrated hopper, the guide surface optimally allowing a gentle or gentle guide of the fiber fleece without inconvenience interruptions. Can be designed to This can be further aided by a corresponding formation of the surface of the guide means. Further, when the integrated molded member is manufactured as a plastic injection molded member, the molded shape can be freely designed.

  In another advantageous configuration of the invention, the press roller fixed to the roller is fixed to one end of the roller, the end being located outside the area of the clamping point. With this arrangement, the hopper draw-out area is located outside the supplied fleece width, so that, for example, as described in DE 10300317A1, the complete joining or merging location is also possible. Distribution arrangement is possible.

  In yet another configuration of the present invention, the rotatably supported press roller that forms a press roller pair with the press roller secured to the roller is transverse to the axis of rotation of the press roller secured to the roller. It is movably supported and is pressed by a spring element toward a press roller fixed to the roller.

  Further, at least one sensor is provided, which can continuously monitor the formed sliver by means of a configuration that senses the movement of a movably supported press roller.

  Therefore, in another configuration of the present invention, a control unit is provided for evaluating a signal sent from the sensor to the control unit for determining mass non-uniformity (CV value). With this configuration, the quality characteristics of the formed sliver can be detected continuously at the appropriate clamp location, and if necessary, the quality (including the sliver with the error) has a predetermined tolerance. If out of range, appropriate interference or treatment can be performed. Such interference or treatment can include, for example, stopping the clamp location by signal transmission.

  In yet another configuration of the present invention, the press roller has a gear-like raised portion on the outer peripheral surface thereof, and the raised portions engage with each other in a shape-coupled manner at the working position of the press roller. With this arrangement, only one of the press rollers needs to be driven via the driving means, and the second press roller is driven via the gear-like raised portion. It can be reliably driven together by a press roller. This also prevents the occurrence of slip between the press rollers, which can adversely affect the quality of the sliver.

  In order to provide a gentle or gentle transfer of the fiber material between the press rollers, in another configuration of the invention, the ridge has a rounded chamfered sinusoidal shape.

  In another advantageous configuration of the invention, the roller in which the roller pair is driven is a screen drum connected to a negative pressure source, on which the combing and detaching device forms a fiber fleece. Combed fiber assemblies are fed intermittently. By using such a device, it is possible to avoid the reciprocating motion (Pilgerschrittbewegung) used for pilger molding, which is conventionally required in a known combing machine disclosed in WO2006 / 012758A1, for example.

  In the context of the use of the screen drum according to the invention, in another configuration of the invention, the combing and detaching device comprises a nipper unit, the combing cylinder being assigned to the nipper unit, and the combing cylinder is connected to its outer periphery. A combing segment and a detaching segment are provided on the surface, and the detaching segment forms a clamping point together with a detaching roller that can be moved close to.

  The combing machine may be formed with more than eight combing points, for example 32 combing points, arranged side by side.

  Next, embodiments of the present invention will be described with reference to the drawings.

It is a side view which shows the combing head of the combing machine by this invention. It is the figure which looked at a part of combing machine shown in FIG. 1 from the direction of X of FIG. FIG. 2 is a view of a part of the combing machine shown in FIG. 1 as seen from the direction Y in FIG. 1 without a nipper unit. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 5 is a diagram showing an embodiment different from that shown in FIG. 4. It is a figure which shows the calender roller pair provided with the molded object on the outer peripheral surface.

  FIG. 1 schematically shows a combing portion, for example, a combing head of a combing machine, also called a comber. In this case, in order to make the drawing easy to see, a swivel arm for the nipper unit Z, a combing cylinder 10 is shown. The brush roller for cleaning and the circuit for the suction passage are not shown. However, these are generally known and are known from many published publications. Usually, a combing machine has a number of combing points located side by side. In the illustrated embodiment, only one of these combing locations is shown.

  Instead of pivotally attaching the nipper unit as shown in the figure, it is also possible to place a nipper unit (hereinafter simply referred to as “nipper”) in place, in which case it is simply used to form the clamping point KS. Only the upper nipper cutter 3 moves relative to the fixed nipper plate 2. However, this is not important to the present invention. In the illustrated embodiment, it is premised on a reciprocating nipper Z (see double arrow), in which case the drive for the oscillating motion is effected from the transmission G, which is schematically shown in the drive path 8. Is connected to the pivot shaft 4 of the frame R of the nipper Z. On the lower nipper plate 2, a supply roller 5 rotatably supported is arranged, and this supply roller 5 is connected to an intermittently operating drive device (not shown) and It works to supply W (or sliver) to the clamp point KS of the nipper. In the illustrated embodiment, the nippers Z are located at the rear and are closed. The end of the wrap that extends beyond the clamping point KS (referred to as a fiber tuft FB) is combed by a garment of a combing segment 11 that extends over a partial area around the combing cylinder 10. The combing cylinder 10 is rotatably supported on the machine frame MS via a shaft 13 and is driven by a transmission device G via a drive path 14 which is shown schematically.

  The transmission G is driven by a main motor M which is schematically shown, and this main motor M is connected to the control unit ST via a line 44. A detaching segment 12 is attached to the combing cylinder 10 on the opposite side of the combing segment 11, and the detaching segment 12 cooperates with a detaching roller 15 (see double arrows) supported so as to be movable. Then, the combed fiber tuft FB is detached or pulled out. More on this later.

  A screen drum 17 is arranged adjacent to the combing cylinder 10 and can be rotated to the machine frame MS by means of bearings 19 and 20 via a shaft 18 as can be seen, for example, in FIGS. It is supported by. The screen drum 17 is driven via a drive wheel A3 (FIG. 3). The drive wheel A3 is fixed to the shaft 18 so as not to rotate, and the transmission device G is connected via a drive path AE shown schematically. (Not shown).

  Between the screen drum 17 and the combing cylinder 10, a flap 22 that can be swiveled around a swivel shaft 23 is disposed, and this flap 22 is a combed component and detached fiber depending on the position. It has the function of guiding the assembly accordingly. In particular, this prevents the combed material (noils, naps, dirt) from reaching the area of the screen drum 17. The function of this flap is described in detail in, for example, WO2008 / 011733A1.

  Similarly, the above publication also discloses a corresponding arrangement of a screen drum, in which the screen drum is further provided with openings for controlling the air flow during the detaching and joining processes (Loetprozess). There is a separate cylinder that is rotatably supported.

  In the illustrated embodiment, however, only a simple screen drum 17 is shown, and a stationary cover element 28 is arranged in the inner chamber of the screen drum 17, and this cover element 28 is used to identify the screen drum 17. It covers the area, that is, the area where the fiber fleece V formed on the screen drum 17 is removed from the screen drum 17. The inner chamber of the screen drum 17 is connected to a negative pressure source 25 via a pipe line 26, and a negative pressure is generated inside the screen drum 17 via the negative pressure source 25.

  A pressing drum 30 is rotatably supported in parallel to the screen drum 17. The pressing drum 30 is placed around the screen drum 17 by its own weight, for example. In this case, the pressing drum 30 may be supported in a direction toward the peripheral surface of the screen drum 17 in a corresponding guide in the machine frame MS. Similarly, the support device for the pressing drum is attached to the swivel arm, and the swivel axis of the swivel arm extends parallel to the axis of the screen drum 17 and is supported by the machine frame MS. Such a configuration is also possible. The pressing drum 30 together with the screen drum 17 forms a clamping point 31 for the fiber fleece V which is guided between the screen drum 17 and the pressing drum 30. The clamp point 31 extends over the width B of the fiber fleece V guided on the outer peripheral portion U of the screen drum 17. The pressing drum 30 has, for example, a rubber coating on the outer peripheral portion thereof, and is rotated by friction via the driven screen drum 17 and the fleece V.

  When viewed in the conveying direction F, a guide element 33 is attached to be connected to the clamp location 31, and the fiber fleece V (shortly referred to as “fleece”) is gathered in the lateral direction via this guide element 33, and the fleece It is sent to hopper 39 (shortly called “hopper”). At this time, the surface-shaped fleece V is collected into a sliver F1, and this sliver F1 is guided through the clamp gap KK of the press roller pair K following the hopper 39 for further compression (FIG. 4). In the following description, the press roller pair is referred to as “calendar roller pair” including calendar rollers K1 and K2.

  The guide element 33 has a lower guide surface 37, which extends over a partial region around the periphery U of the screen drum 17, and is a cross-sectional view taken along line AA in FIG. 3 (FIG. 4). As shown in FIG. 4, the shape of the screen drum 17 is adjusted to the surrounding shape. Only a small gap exists between the periphery U of the screen drum 17 and the guide surface 37 to ensure that the guide element 33 does not come into contact with the periphery U of the screen drum 17 and rub. The guide element 33 is firmly connected to the machine frame MS via a fixing element (not shown), and is thereby maintained at a fixed position with respect to the peripheral surface U of the screen drum 17.

  In order to laterally guide the fleece V while being gathered up to the hopper 39, the guide element 33 is provided with side guides 34, 35, and these side guides 34, 35 are connected to a lower guide surface 37. It is connected and extends outward from the lower guide surface 37 with respect to the shaft 18 of the screen drum 17. The side guides 34, 35 may be formed in an arcuate shape when viewed in cross section to assist in “rounding” the fleece edge until delivery to the hopper. The side guide 34 on which the fleece V first collides after leaving the clamp location 31 has an arc portion R1, and this arc portion R1 has shifted to a straight section 36. The straight section 36 is a hopper. It extends at an angle α that descends to 39. The side guides 35 located opposite each other initially have a straight section 38, which forms an angle β with respect to the axis 18 of the screen drum 17, and this straight section 38 has an arcuate shape. Opening in section R2, the second fleece edge is fed to hopper 39 via this section R2. The cross section of the side guide 35 may also be formed in an arc shape.

  In the illustrated embodiment, the hopper 39, the guide surface 37, and the side guides 34, 35 are manufactured from one member, for example, from one plastic injection molded member. The hopper 39 includes side guides 41 and 42 extending downward, and these side guides 41 and 42 feed the fiber fleece gathered in the hopper 39 to the clamp point KK of the subsequent calendar roller pair. Work to guide you sideways.

  FIG. 4a shows a section of FIG. 4, in which the guide surface 37 'for the fleece V is not adapted to the outer shape around the screen drum 17 as in FIG. The screen drum 17 extends at an angle δ with respect to the tangent line Tg of the screen drum 17 and opens to the hopper 39. Such a course or shape of the guide surface 37 ′ of the guide element 33 as shown in FIG. 4 a is also “fixed guide means extending in the region of the peripheral surface (U) of the driven roller (17). Is included in the concept of the claim.

  As described in the claims and shown, for example, in FIG. 3, one calendar roller K1 of the calendar roller pair K is fixed to the screen drum 17 so as not to be relatively rotatable and coaxially. It is located outside the region extending with a width B when supplied to the clamp location 31. The second calendar roller K2 is rotatably supported by a turning arm 49 via a bearing L1, and the turning arm 49 is attached to the machine frame MS so as to be turnable about a turning shaft 51.

  The swivel arm 49 and thus the calendar roller K2 are pressed toward the calendar roller K1 by the spring 50 supported by the machine frame MS. As a result, pressure is applied to the fiber material at the clamp locations KK of the calendar rollers K1, K2, and this fiber material can be further compressed, thereby increasing the holding force. For example, a bellows cylinder may be used instead of the illustrated spring 50.

  The pivoting movement of the calendar roller K2 toward the calendar roller K1 can be limited by providing a corresponding limit stopper (not shown), thereby avoiding complete contact of the calendar roller K2 with the calendar roller K1. can do.

  The movement of the swivel arm 49 is monitored by a sensor 47 which is fixedly mounted on the machine frame MS, and the signal of this sensor 47 is transmitted via a line 48 to the central control unit ST. The signal is then evaluated in the control unit ST using a built-in program. By sensing the swivel movement of the swivel arm 49, the movement of the calendar roller K2 is detected and this movement is caused by the mass variation of the fiber material guided through the clamping point KK. This allows the mass progression to be determined and shown as a CV value. The display can be performed, for example, on a display device AZ (for example, a display) connected to the control unit ST. If the determined CV value moves outside a predetermined tolerance limit value, an additional warning light can be activated via the control unit ST to stop the corresponding combing point. The calendar roller K2 is driven via a driving wheel A2 that is drivingly coupled to the driving wheel A1 via a belt ZR (for example, a toothed belt). The belt ZR is tensioned by a tension device not shown in order to compensate for the movement between the axes of the calendar rollers K1, K2. It is also possible to use a gear transmission. The drive vehicle A2 is fixed to a shaft 29 to which the calendar roller K2 is firmly coupled so as not to rotate. As shown in the figure, the shaft 29 is supported by a bearing location L1 disposed on the swivel arm 49. The drive wheel A1 is fixed to the shaft 18 of the screen drum 17, which is simultaneously based on the fact that the calendar roller K1 is coaxially connected to the screen drum 17 and rigidly connected to the screen drum 17. It is also the drive shaft of the calendar roller K1. This saves an additional axis for the calendar roller K1 and ensures absolute synchronization between the screen drum 17 and the calendar roller K1. The shaft 18 of the screen drum 17 is rotatably supported on the machine frame MS via bearings 19 and 20. Further, another drive wheel A3 is fixed to the shaft 18 so as not to rotate, and this drive wheel A3 is drivingly coupled to the transmission device G via a drive element AE which is schematically shown. In a further possible embodiment, the calender roller K2 is not actively driven by the driven shaft 18 directly via the belt transmissions A1, A2, ZR as shown, but rather by a spring-loaded device. Under the action of (50), it is rotated by the calendar roller K1 driven by friction.

  In the enlarged view of FIG. 4b, yet another embodiment for driving the calendar roller K2 is shown. The calender rollers K1 and K2 are provided with sinusoidal molding portions 54 and 55 on the outer peripheral portion, and these molding portions 54 and 55 mesh with each other like gears in the region where the fiber material passes in the illustrated operating position. ing. In this way, both the molding parts 54 and 55 are engaged with each other in a shape coupling manner, so that the calendar roller K2 supported so as to be freely rotatable about the shaft 18 is drivingly coupled to the transmission device G. It is driven by the calendar roller K1. In other words, in this embodiment, a special drive element for the calendar roller K2 is not required as in the embodiment shown in FIG. Due to the action of the forming portion on the fiber material guided through, the fixing force of the sliver F1 fed out by the calendar roller pair K is further increased.

The operation of the illustrated device is described in detail below:
In the position shown in FIG. 1, the nipper Z is closed and occupies the rear position. The fiber tuft FB that has advanced from the clamp location KS of the nipper Z is combed by the engaging combing segment 11 provided in the combing cylinder 10. Since the flap 22 is located in the vicinity of the outer peripheral portion U of the subsequent screen drum 17, the combed component (noil) is discharged downward into a suction passage (not shown). After the combing process, the nippers Z have moved to the forward position and are now positioned at a slight distance with respect to the detaching roller 15, during which the detaching roller 15 is moved towards the shaft 13 of the combing cylinder 10. Together with the detaching segment 12 to form a clamping point.

  The detaching segment 12 is moved to the area under the detaching roller 15 during the forward movement of the nipper Z by the rotational movement of the combing cylinder 10.

  The end of the combed fiber tuft FB, now advancing from the open nipper Z, is gripped by the clamping point between the detaching segment 12 and the detaching roller 15 located above it, thereby The fibers gripped at that time are pulled out from the end of the fiber tuft FB, that is, “detached”. The fiber assembly generated during the detaching process is placed and overlapped on the end of the fleece V already placed on the outer peripheral portion U of the screen drum 17 under the influence of the negative pressure applied in the screen drum 17 ( Joining process). However, before delivery of the detached fiber assembly to the screen drum 17 is performed, the flap 22 is moved toward the combing cylinder 10 about the pivot shaft 23 in order to assist the delivery. A detailed description of this process is described in, for example, WO2008 / 011733A1. The area of delivery, such as the area on the screen drum 17, is provided with a corresponding partition (not shown) so that the air flow required for the delivery and splicing process can be precisely controlled. Good.

  The screen drum 17 is driven at a constant speed, and the fleece V is moved to the clamp location 31 between the pressing drum 30 and the screen drum 17 on the outer peripheral portion U of the screen drum 17. After leaving the clamp location 31, the fleece V reaches the lower guide surface 37 of the guide element 33 and collides with the side guide 34. In the side guide 34, the fleece V is delivered to the hopper 39 by the oblique arrangement form (angle α) of the straight section 36 under the action of the arc portion R <b> 1. Another side guide 35 with a straight section 38 (angle β) and a circular arc R2 arranged on the side facing the side guide 34 delivers the fleece edge located on the opposite side to the hopper 39. Subsidize. The fleece delivered to the hopper 39 is compressed together by this, and delivered to the clamp location KK of the subsequent calendar roller pair K (K1, K2) to be driven through the hopper. This delivery is assisted by side guides 41 and 42 fixed to the hopper 39. This prevents the fiber material from escaping laterally before reaching the clamping point KK where the fiber material is further compressed. As already mentioned, the mass fluctuation of the fiber material guided through the clamping point KK can be detected and monitored via the sensor 47 by sensing the swirl movement by the calender roller K2 supported so as to swivel. .

  The sliver F1 sent out from the calendar rollers K1 and K2 downward in the carrying direction FX reaches the top of the carrying table T, and the sliver F1 is manufactured and sent out at an adjacent combing point via the carrying table T. Together with the other slivers F2 to F6, it is delivered to the subsequent draft unit. A sliver storage device may be provided for connecting the draft device unit and storing the sliver formed in the draft device unit in a can.

  The table T consists of a driven conveyor, for example a conveyor belt. The number of slivers F1 to F6 transported on the transport table is merely an example. A greater number of combing locations (more than 12 locations) may be arranged next to each other, so that a larger number of slivers are supplied to subsequent draft devices. There can be up to 48 combing points located side by side.

  The proposed device provides a compact and simple solution, in which additional bearing devices and drive shafts are avoided and the risk of false drafts is minimized. The apparatus proposed in the present invention is particularly combing with a small number of combing points which are arranged side by side with a combing point where the width of the fleece to be collected is small compared to in a general-purpose combing machine. Is advantageous for the machine.

Claims (14)

  An apparatus for forming a sliver (F1) from a fiber fleece (V) formed at a combing point (1) of a combing machine, wherein the fiber fleece (V) is at a clamp point (31) of a roller pair (17, 30). The roller pair (17, 30) supplied is composed of a roller (17) and a pressing roller (30) connected to a driving device, and the fiber fleece (V) is clamped when viewed in the conveying direction (F). The fiber fleece (V) is of the type that is gathered behind the point (31) and fed to the press roller pair (K) connected to the driving device (G, M) via the hopper (39). In the region of the peripheral surface (U) of the roller (17) to be driven behind the clamp point (31) of the roller pair (17, 30) as viewed in the transport direction (F), the hopper (39) and the subsequent Press roller pair ( ), And one press roller (K1) of the pair of press rollers (K) is non-rotatably and coaxially disposed on the driven roller (17). Forming device.   At least one for the fiber fleece (V) extending in the region of the peripheral surface (U) of the driven roller (17) between the clamping point (31) of the roller pair (17, 30) and the hopper. 2. The device according to claim 1, wherein two stationary guide means (33) are arranged.   The guide means (33) has at least one side guide (34), the side guide (34) has entered the conveying path of the fiber fleece (V), and the driven roller (17) 3. The device as claimed in claim 2, wherein the device extends at an acute angle ([alpha]) to the hopper (39) with respect to the axis of rotation (18).   The guide means (33) comprises a lower guide surface (37), which extends in the region of the peripheral surface (U) of the roller (17) to be driven, 4. Device according to claim 3, wherein V) is supported on the lower side during delivery to the hopper (39).   5. The device as claimed in claim 2, wherein the hopper (39) and the guide means (33) are connected to each other.   6. The device according to claim 5, wherein the hopper (39) and the guide means (33) are formed as an integral molded member.   The press roller (K1) fixed to the roller (17) is fixed to one end of the roller (17), and the end is located outside the region of the clamp location (31). 7. The apparatus according to any one of items 6 to 6.   A press roller (K2) rotatably supported which forms a press roller pair (K) together with a press roller (K1) fixed to the roller (17) is a press roller (K1) fixed to the roller (17). From a rotating shaft (18), movably supported laterally and pressed by a spring element (50) towards a press roller (K1) fixed to the roller (17). The apparatus according to any one of 6 to 6.   9. The device according to claim 8, wherein at least one sensor (47) is provided, which sensor (47) senses the movement of the movably supported press roller (K2).   10. The device according to claim 9, wherein a control unit (ST) is provided for evaluating a signal sent from the sensor (47) to the control unit for determining the mass non-uniformity (CV value).   11. The press roller (K1, K2) is provided with gear-like ridges on its outer peripheral surface, and the ridges engage with each other in a shape-coupled manner at the working position of the press roller. The apparatus of claim 1.   The apparatus of claim 11, wherein the ridge has a sinusoidal shape that is rounded and chamfered.   The roller (17) driven by the roller pair (17, 30) is a screen drum (17) connected to a negative pressure source (25), and a fiber fleece (V) is supplied to the screen drum (17). 5. A device according to any one of claims 1 to 4, in which the fiber assemblies combed by the combing and detaching device (Z, 10, 15) are intermittently supplied for forming.   The combing and detaching device (Z, 10, 15) comprises a nipper unit (Z), and the combing cylinder (10) is assigned to the nipper unit (Z), and the combing cylinder (10) 14. A combing segment (11) and a detaching segment (12), wherein the detaching segment (12) forms a clamping point together with a detaching roller (15) capable of approaching movement. apparatus.

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