JP5984812B2 - Combing machine circular comb - Google Patents

Description

  The present invention includes a base that supports a combing needle cloth on an outer peripheral surface that is attached to a shaft so as not to rotate relative to the shaft, and is a side of the shaft that is opposite to the combing needle cloth when viewed in the radial direction of the shaft. The present invention relates to a circular comb for a combing machine, to which a mass compensation element is attached.

  This type of circular comb is used for combing machines or combs that comb the supplied fiber mass (cotton, wool, etc.). In this case, the supply of the fiber mass can be performed in the form of a wrap web (also simply referred to as a wound body) wound around a winding tube or in the form of individual fiber bundles.

  The number of combing operations or the number of nips (combing operations / minute) has been greatly increased in recent years, which is accompanied by an improvement in productivity.

  In order to better adapt the system to the combing process, the requirements imposed on such a circular comb, for example when the circular comb is no longer having a continuous rotational speed but is driven with a discontinuous rotational movement Also increased. Such an embodiment is shown and described in, for example, Japanese Patent Publication No. 58-57529.

  This discontinuous movement imposes high demands on the drive of the circular comb, particularly when a relatively large mass of the circular comb has to be accelerated or decelerated.

  Circular combs used for combing machines have a circular comb support. This circular comb support has a clamping hub. By this tightening hub, the circular comb support is attached to the driven circular comb shaft in a relatively non-rotatable manner. A combing segment is attached to a partial circumferential surface of the circular comb support. By this combing segment, the ends of the fiber mass (also referred to as fiber tuft) supplied from the nipper unit are combed or combed.

  Such a device can be seen from published German Offenlegungsschrift 10163663 and German Offenlegungsschrift 2503976.

  The combing segment may be assembled from a plurality of members. In this case, for example, a base to which a combing needle cloth is attached may be provided. In this case, the base body is detachably coupled to the circular comb support. There can be multiple combing segments.

  Since the combing segment is attached to the circular comb support on one side, a mass compensator is required on the opposite side to the combing segment for balancing. Thereby, imbalance (unbalance) does not arise or mass oscillation (Massenschwingungen) can be avoided. In the solution used in the prior art, a circular comb support is produced as a cast part, which is provided with an additional mass on the side opposite to where the combing segment is attached.

  In this embodiment, the mass of the combing segment is compensated, but the circular comb support thus formed itself has a large and heavy mass that is constantly accelerated during discontinuous circular comb motion. And must be decelerated. By using the discontinuous rotational speed of the circular comb, it is possible to work with a high number of combing operations. The acceleration and deceleration that occurs in this case gives an additional load to the drive unit. In this case, if it is even more inconvenient, it can lead to adverse vibrations of the device, which can reduce the life of the device.

  In order to enhance the combing action, combing segments extending over a circumferential angle of 130 ° or more have been proposed. Such combing segments are described in published European Patent No. 1383948. By increasing the combing action, the mass of the substrate to which the combing garment is attached is also increased.

  From GB 205128, an embodiment of a circular comb is known. In this case, the base body that supports the combing knitted fabric is formed integrally, that is, in one piece, and is directly supported by the circular comb shaft at both ends. The base is fastened to the circular comb shaft by screws passing through the flange of the counterweight.

  In this case, the counterweight includes a hook-shaped attachment portion. The counterweight is fitted over the circular comb shaft through the attachment portion and is fastened to the circular comb shaft through a screw. The hook-shaped attachment portion is located between both support end portions of the base. Thereby, the intermediate region of the substrate has no support. The spacing between the tip of the combing knitted fabric and the lower nipper plate must be kept very small in the combing position. Thereby, the tuft to be combed protruding from the closed nip can be almost completely captured. In other words, in order to ensure the dimensional accuracy of the substrate in this intermediate region and thus to keep the combing behavior constant over the entire width of the combing garment, the substrate is relatively medium in the manner according to GB 205128. It must actually be formed. This has the result that the mass moment of inertia is formed very large, which means that the energy to be formed and especially when working with high combing speeds and discontinuous speeds, as is the case today. It acts inconveniently on the bearing point. At the time of the publication of British patent 205128 (1923), the number of combing motions operated was several times smaller, so the mass moment of inertia in this region was not very important.

  Therefore, the problem underlying the present invention is to improve the known solution and to propose a circular comb having a small mass moment of inertia compared to the known solution even at high rotational speeds. At the same time, it is desirable that a certain stability of the circular comb is ensured over the entire width of the circular comb.

  According to the configuration of the present invention that solves the above problems, the base body is formed of a hollow molded body, and the hollow molded body includes an outer arc-shaped portion for accommodating the combing needle cloth, the combing needle cloth, And an inner part located on the opposite side, the inner part comprising a semicircular depression open towards the direction of the shaft, said depression extending in the longitudinal direction of the hollow molding and the depression The base is supported by the shaft via the shaft, and attachment means is provided. The attachment means fastens the base and the mass compensation element to each other in the transverse direction perpendicular to the longitudinal direction of the shaft.

  With this structural form of the substrate, the thickness of the shaped body can be kept small, especially in the region supporting the combing garment, which is located outwardly with respect to the rotational axis of the circular comb shaft, and the shaped body has a circular comb over its entire length. It is realized that it is supported by the shaft. Therefore, the mass in this region and thus the mass moment of inertia can be kept small. As a result, the circumferential angle of the combing garment in the circular comb can be increased with respect to the known solution, and at this time, the mass moment of inertia does not increase significantly with respect to the known solution. .

  It is further proposed that the mass compensation element has a concave part facing the direction of the shaft. The mass compensation element is placed on the partial peripheral surface of the shaft through the concave portion. Thus, a compact structural form is obtained, in which case the base element compact and the mass compensation element can surround the circumference of the circular comb shaft, both elements being assembled and closed surrounding the circular comb shaft. A single unit can be formed.

  Advantageously, it has been proposed that the hollow body of the substrate comprises ribs extending in the longitudinal direction and into the hollow body. These ribs divide the hollow molded body into triangular hollow spaces, that is, form a plurality of triangular hollow spaces in the hollow molded body. Therefore, the thickness of the hollow molded body can be kept small. This is because force transmission can be optimally transmitted to the support to the circular comb shaft via a triangular hollow space (due to the equilibrium and honeycomb arrangement). The shaft is provided with a plurality of through-openings extending in a direction perpendicular to the longitudinal axis of the shaft, and the mounting means penetrates the axis of rotation of the shaft by another proposal that the mounting means passes through these through-openings. It is thus ensured that the mass moment of inertia is only slightly increased by the attachment of the attachment means.

  Advantageously, the attachment means is a screw. This screw enters the threaded hole of the hollow molding. This allows a simple and reliable attachment of the hollow body and the counterweight to the circular comb shaft. In this case, the force introduction by the screw is performed directly in the region of the tightening surface where the hollow molded body and the counterweight are placed on the circular comb shaft.

  In order to maintain the mass inertia at a low level, the hollow molded body of the substrate is manufactured from a material having a small specific gravity. The hollow molded body of the substrate may be manufactured, for example, from an extruded body of aluminum.

  As long as a threaded hole must be received in the threaded hole, as long as a threaded hole is provided in this member to directly accommodate the mounting element (eg a screw), May cause deformation. In order to eliminate this deformation, it is further proposed that at least one additional means is supported in the region of the inner part inside the hollow body. This additional means comprises a threaded hole for accommodating the attachment means, in which case the additional means may have a higher strength than the hollow body.

  In order to fix the angular position between the substrate and the mass compensation element in the circular comb shaft, the mounting means is a screw, and at least one of the plurality of screws is an alignment screw or alignment screw (Passschraube: Dowel). The screw shaft portion of the mating screw passes through a positioning hole or a mating hole (Passbohrung: a hole into which the dowel portion is fitted) provided in the mass compensation element, the shaft, and the base body. It is further proposed to do. In this case, the threaded pin provided at the end of the mating screw is received in the threaded hole of the additional means.

  The hollow molded body and the outer surface of the mass compensation element were closed to prevent uncontrolled air flow from the outer ring of the circular comb and to protect the circular comb itself against contaminants (floating fibers). It is further proposed to form a peripheral surface.

  The mass compensation element and the shaft are provided with a groove so that the positioning of the combing segment and the compensation element with respect to the pivotable nipper unit can be maintained. On the other hand, it is proposed that the key is used to be positioned at a position determined in the circumferential direction of the shaft. Thus, the angular position of the circular comb shaft and the position of the drive shaft of the nipper unit can be accurately adjusted relative to each other.

  In order to keep the inner chamber of the hollow molded body clean, it has been proposed that covers for closing the hollow space are attached to both ends of the hollow molded body.

  The mass compensation element is coupled to the shaft via additional attachment means so that the hollow body of the substrate can be removed from the circular comb shaft independently of the mass compensation element (eg for replacement). It has been proposed that That is, the substrate can be removed from the circular comb shaft after removal of the mass compensation element and the attachment means that clamp the substrate to the circular comb shaft, whereas the mass compensation element can be removed by additional attachment means. It is still held on the circular comb shaft. This facilitates assembly and removal.

  In order to reduce the mass moment of inertia, it is further proposed that the thickness of the outer part of the substrate is reduced stepwise when viewed in the direction of rotation of the circular comb.

  This advantageously means that the outer surface (U) of the outer part (23) of the substrate (20) has at least one step (A1) supporting the combing garment (G), This is achieved by proposing that the stepped portion (A1) and the stepped portion (Z1) provided on the combing needle cloth (G) face each other. In this case, the height of the step is adapted to the different toothpastes of successive cloth segments.

  Any reduction in mass, especially in the outer region of a circular comb rotating at a high rotational speed, has a significant effect on the reduction of the mass moment of inertia. This is particularly advantageous when the circular comb is driven at discontinuous rotational speeds and thus the drive is subjected to acceleration and deceleration.

  Further advantages of the invention are shown and described in detail in the following embodiments.

It is a schematic partial side view which shows the combing head of a combing machine. 1 is a schematic side view of a circular comb formed according to the present invention. FIG. It is a side view from the X direction of the circular comb shown in FIG. It is a figure which shows another aspect of the aspect shown in FIG. It is a figure which shows another aspect of the aspect shown in FIG. 4b is a partial view showing still another embodiment of the embodiment shown in FIGS. 4 and 4a. FIG. It is the fragmentary figure which expanded the aspect shown in FIG.

  FIG. 1 shows a schematic side view of a combing head K provided in a combing machine or comber. In a known combing machine, for example, eight such combing heads K are arranged side by side. The combing head K, of which only some of the components are illustrated, has a nipper (gripping) unit 1. The nipper unit 1 is supported in a frame of a combing machine so as to be able to revolve around axes 10 and 15 via revolving arms 9 and 12. The shaft 10, which is also referred to as a nipper shaft, is driven by a drive unit (not shown), thereby giving the nipper unit 1 a reciprocating motion. The shaft 15 corresponds to a circular comb shaft, and the circular comb R is attached to the circular comb shaft so as not to be relatively rotatable. The circular comb shaft 15 having the central axis A is also driven continuously or discontinuously by one drive unit (not shown). The circular comb R attached to the circular comb shaft 15 below the nipper unit 1 has two hubs N1, N2 rigidly attached to the circular comb shaft 15 spaced apart from each other in the known manner shown. have. On the outer peripheral surface of the circular comb R, a base body 18 is attached on the one hand and a mass compensation element AG is attached on the other hand. The attachment of the mass compensation element (also referred to simply as “compensation element”) is effected via a screw S, as shown schematically. Via these screws S, the mass compensation element is attached to the hubs N1, N2. The base body 18 is firmly connected to the hubs N1, N2 via screws S1, which are also schematically shown. A Garnitur G is attached to the base body 18 which extends over the entire width B of the circular comb R as in the compensation element AG. The angle of the combing garment G indicated by the angle α is about 90 degrees in the case of a known combing machine, and is also called a combing angle.

  The nipper unit 1 is formed of a nipper frame 5, and a lower nipper plate 6 is attached to the nipper frame 5. On the nipper frame 5, a revolving arm 3 and an upper nipper plate (nipper knife) 2 are supported so as to be revolved around a revolving axis 4. In the illustrated embodiment, the nipper unit 1 is closed. In this case, the tufts or fiber tresses FB protruding from the nip portion of the nipper unit 1 are captured by the cloth G and combed. A biasing means (not shown: for example, a spring) acts on the swivel arm 3, and this biasing means controls the swivel movement of the upper nipper plate 2 on the one hand and the nipper unit 1 on the other hand. The necessary gripping force is formed at the nip location. Similarly, in the nipper frame 5, a feed roller 16 is rotatably supported above the lower nipper plate 6. The feed roller 16 is driven stepwise by, for example, a ratchet driving device (not shown). The wrap W (or individual fiber bundle) supplied to the nipper unit 1 is supplied to the nip portion of the nipper unit 1 via the feed roller 16. After the combing process of the tuft FB is performed, the nipper unit 1 is turned like a parallelogram link movement toward the subsequent detaching roller pair AW. At the time of this turning process, the nipper unit 1 is opened, and the end portion of the wrap or tuft FB that has been combed is placed on the end portion E of the fiber fleece V that has been formed, and the nip portion of the detaching roller AW is placed. Under the action, it is superimposed on the fiber fleece V and conveyed in the conveying direction F.

  FIG. 2 shows one form of a circular comb R formed according to the present invention. In this case, the base body 20 shown in FIG. 2 is formed as a hollow molded body. This hollow molded body is supported on a partial circumferential surface of the circular comb shaft 15 via a semicircular recess 21. The recess 21 is located in the inner portion 22 of the base body 20. An outer portion 23 is supported on the inner portion 22 via ribs R1 to R4. Hollow spaces H1 to H3 are formed between the ribs R1 to R4 and the inner and outer portions 22 and 23. For example, as can be seen from FIG. 3, the recess 21 is placed on the circumferential surface of the circular comb shaft 15 over the entire width B of the circular comb R. The portions 22 and 23 and the ribs R1 to R4 also extend over the width B of the circular comb R. In order to additionally reduce the mass of the substrate 20, it is also conceivable that the ribs R1 to R4 are provided with breaks or openings distributed over the width B of the circular comb R. This may require additional manufacturing steps in some cases.

  By forming the base body 20 as shown in the figure as a hollow molded body, the thickness d of the outer portion 23 of the base body 20 is particularly reduced without significantly reducing the required stability and strength of the base body 20. can do. Thereby, the base body 20 can be formed with a relatively small mass in a region (outer portion 23) farthest from the rotational axis A of the circular comb shaft 15. Therefore, the mass moment of inertia is also greatly reduced. Thereby, the combing angle α1 can be enlarged as compared with the combing angle (α) in the known solution, and in this case, the mass moment of inertia is not increased as compared with the known solution. In other words, for example, the angle α1 can be expanded to 130 ° or more without further increasing the mass moment of inertia in the configuration shown in FIG. 1 having a 90 ° combing angle α. A combing garment G is attached to the outer peripheral surface U of the outer portion 23 of the base body 20.

  In this example, the base body 20 is formed in a V shape in the region of the inner portion 22. That is, the webs 22a and 22b extending outward from the recess 21 form a V-shaped accommodating portion for the mass compensation element (also simply referred to as “compensation element”) AG1. In this case, the mass compensation element AG is similarly placed on the partial circumferential surface of the shaft 15 over the width B. A small gap AB is provided between the outer ring of the compensation element AG1 and the webs 22a, 22b. Thereby, it is achieved that the base body 20 is completely applied to the outer peripheral surface of the circular comb shaft 15 in the region of the depression 21 and the compensation element AG1 is in the region of the concave portion 25 formed in the depression shape. The outer ring K of the compensation element AG1 is connected to the outer ring of the ribs R1 and R4 of the base body 20, thereby forming a closed (no stepped) circumferential surface of the circular comb R. Thus, it is achieved that the outer shape of the circular comb R does not cause an undesirable air circulation. Furthermore, the adhesion of contaminants (fiber waste) in the peripheral surface area of the circular comb is sufficiently prevented.

  In order to attach the base body 20 and the compensation element AG1 to the circular comb shaft 15 (also referred to simply as “shaft”), the shaft 15 is provided with a plurality of through holes 27 when viewed over the width B of the circular comb R. The screw S3 passes through these through holes 27. The screw head of each screw S3 is placed in a recessed portion 26 provided in the compensation element AG1. Further, a through hole 28 is provided in the compensation element AG1. The through hole 28 is aligned with the through hole 27 provided in the shaft 15. The end of each screw S3 has a thread 30. The thread 30 enters a threaded hole 31 provided in the region of the recess 21 of the base body 20. By tightening the screw S3 and screwing it into the threaded hole 31, the base body 20 and the compensation element AG1 are pressed in the direction toward each other, and the shaft 15 has a recess 21 and a portion 25 formed in a recess shape. It is firmly tightened to the shaft 15 via

  The compensation element AG1 may be provided with a longitudinal groove, as schematically indicated by the broken line in FIG. This longitudinal groove forms a key / groove coupling 33 with the longitudinal grooves located opposite each other in the shaft 15 by using a key. Through the key / groove coupling portion 33, the angular position of the compensation element AG1, and thus the base body 20, can be accurately maintained. It can thus be ensured that the predetermined angular position of the combing segment G is accurately determined with respect to the corresponding position of the nipper unit 1.

  Similarly, as can be seen from FIG. 3, such a plurality of screw fastening portions having the screw S <b> 3 are arranged over the width B of the circular comb R. Therefore, it is guaranteed that the base body 20 and the compensation weight AG1 are placed on or supported by the shaft 15 evenly and over the entire width B of the circular comb R.

  As can be seen simply from FIG. 3, the compensation element AG <b> 1 includes another through hole 34 and a recessed portion 35. The screw S2 passes through the through hole 34 and the recessed portion 35. The end of each screw is provided with a thread. These threads end in a threaded hole 36 provided in the shaft 15. The threaded hole 36 does not penetrate and extends only over part of the diameter of the shaft 15. This additional screw fastening by means of the screw S2 allows an independent mounting of the compensation weight AG1 on the shaft 15. That is, the base body 20 and the combing garment G attached to the base body 20 can be completely removed after the screw S3 is removed from the shaft 15, whereas the compensation weight AG1 is connected via the screw fastening portion S2. It is still attached to the shaft 15. This allows a simple and quick exchange of the base body 20 with the combing garment G, without having to remove the compensation element AG1 as well.

  One cover 38, 39 is attached to each end surface of the base 20 via a screw coupling portion 40, which is simply shown. As a result, the hollow spaces H1 to H3 of the base body 20 can be blocked from the outside. These covers 38 and 39 may be manufactured from a lightweight material (plastic). This is because the covers 38 and 39 only have a problem of preventing entry of contaminants (floating fibers) into the hollow space of the base 20.

  In another embodiment shown in FIG. 4, a variation of the form shown in FIG. 2 is shown. In this case, the base 20 has additional ribs R5 and R6 with respect to the configuration shown in FIG. These ribs R5 and R6 form triangular hollow spaces H1, H2, H3, H5 and H6 in order to increase the stability. In the region of the depression 21, the base body 20 includes a through hole 42. The screw S3 passes through the through hole 42. The end of each screw S3 is provided with a thread 30. This thread 30 enters into a threaded hole 45 provided in the charging member 46. The position of the insertion member 46 is held in the recessed portion 44 with respect to the base body 20. The insertion member 46 has a higher strength (specific gravity) than the base body 20, thereby preventing deformation of the screw thread 45 due to the pulling force of the screw S <b> 3. This risk of deformation can occur when the thread 30 is provided directly on the substrate 20, which can be formed from a material with a low specific gravity.

  FIG. 4a shows another configuration that substantially matches the configuration shown in FIG. This embodiment differs only in the use of a set screw or mating screw (Passschraube: screw having a dowel portion) S3a. The angular positions of the base body 20 and the compensation weight AG1 on the circular comb shaft 15 can be accurately fixed via the mating screw S3a. By using the mating screw S3a, the position fixing by the key / groove coupling portion 33 shown and described in FIG. 3 can be omitted. That is, one screw S3 of the screws S3 shown in FIG. 3 is replaced with a mating screw S3a. The remaining screw S3 (FIG. 3) passes through the through holes 28, 27 and 42 as shown in FIG. The diameters of these through holes 28, 27, and 42 are formed to be somewhat larger than the diameter of the threaded shaft portion that passes therethrough.

  In the region of the mating screw S3a, the compensation weight AG1 has a positioning hole or passbohrung 48, the circular comb shaft 15 has a mating hole 49, and the base body 20 has a mating hole 50. The screw shaft portions 52 are accommodated in these alignment holes, and a play-free fit is formed with these alignment holes.

  The screw head 51 of the mating screw S3a is placed in the recessed portion 26 provided in the compensation weight AG1. The end of the mating screw S3a is provided with a threaded pin 53. This threaded pin 53 enters into a threaded hole 45 provided in the loading member 46 (eg, as in the example shown in FIG. 4).

  Yet another embodiment shown in FIG. 5 (FIG. 5a) shows one form of circular comb R. FIG. The base body 20 of the circular comb R includes a step A1 having a predetermined height h in the region of the peripheral surface U of the outer portion 23 thereof. Correspondingly, the combing garment G (usually composed of a plurality of garment strips which are adjacent to each other and extend in parallel) attached to the peripheral surface U similarly has a stepped portion Z1. . The dimensional design of the stepped portion Z1 corresponds to the stepped portion A1, and is located facing the stepped portion A1. The area of the step A1 / Z1 is particularly shown in detail in the enlarged partial view shown in FIG. 5a.

  The first section G1 of the combing garment G has a coarse dentition with a large tooth t1 compared to a fine dentition of the second part G2 with a small tooth t2. As can be seen from FIG. 5a, the first part G1 to which the second part G2 is connected terminates in the region of the step A1.

  The thickness d2 of the portion 23b (FIG. 5) of the outer portion 23 of the base body 20 substantially matches the thickness d of the outer portion 23 shown in FIGS. 4 and 4a. However, the thickness d1 of the portion 23a in the region of the first portion G1 of the combing garment G is formed smaller than the thickness d2 of the portion 23b in the region of the second portion G2 of the combing garment G. Thus, a reduction in the mass in the part 23a of the outer part 23 of the substrate 20 can be achieved, whereby the mass moment of inertia of the circular comb is reduced overall. This makes it possible to further increase the rotational speed without exceeding the critical range.

  With the means shown in FIG. 5, an optimized configuration of the base body 20 is obtained in accordance with the depth of the teeth in which the needle cloth is present. Depending on the configuration of the needle cloth, it is also conceivable to provide more than one stepped portion (stepped portion) on the peripheral surface U of the base body 20.

  Obviously, other embodiments are possible within the framework of the invention.

Claims (14)

A base body (18, 20) that is attached to the shaft (15) so as not to rotate relative to the outer peripheral surface and supports the combing needle cloth (G),
A circular comb for a combing machine, wherein a mass compensation element (AG, AG1) is attached to the side of the shaft (15) opposite to the combing garment (G) when viewed in the radial direction of the shaft (R),
The base body (20) is made of a hollow molded body,
The hollow molded body includes an outer arc-shaped portion (23) for accommodating the combing needle cloth (G), and an inner portion (22) located on the side opposite to the outer portion (23). )
The inner part (22) has a semicircular recess (21) open in the direction of the shaft (15);
The recess (21) extends over the entire length of the hollow molded body (20) in the longitudinal direction, and extends over the entire length of the base body (20) via the recess (21 ). Is supported by the shaft (15),
An attachment means (S3) for fastening the base body (20) and the mass compensation element (AG1) to each other in a direction transverse to the longitudinal direction of the shaft (15) is provided. A circular comb for combing machines.   The mass compensation element (AG1) has a concave portion (25) facing the direction of the shaft (15), and the mass compensation element (AG1) is connected to the shaft via the concave portion (25). The circular comb according to claim 1, which is placed on the partial peripheral surface of (15).   The hollow molded body of the base body (20) includes ribs (R2, R3, R5, R6) extending in the longitudinal direction of the base body (20) and into the hollow molded body, and the ribs (R2, R3, R5). , R6) is a circular comb according to claim 1 or 2, wherein the hollow molded body is divided into triangular hollow spaces (H1, H2, H3, H5, H6).   The shaft (15) includes a plurality of through openings (27) extending in a transverse direction perpendicular to the longitudinal axis of the shaft (15), and the attachment means (S3) passes through the through openings (27). The circular comb according to any one of claims 1 to 3.   The circular comb according to claim 4, wherein the attachment means is a screw (S3), and the screw (S3) enters into a threaded hole (31) provided in the hollow molded body (20).   In the hollow molded body (20), in the region of the inner part (22), at least one additional provided with a threaded hole (45) for accommodating the attachment means (S3, S3a) 5. The circular comb according to claim 4, wherein means (46) are supported, said additional means (46) having a higher strength than said hollow body (20).   The attachment means is a screw (S3, S3a), at least one of the screws (S3a) is a mating screw (S3a), and a screw shaft portion (52) of the mating screw (S3a) is Threaded through the mating holes (48, 49, 50) provided in the mass compensation element (AG1), the shaft (15) and the base body (20) and provided at the end of the mating screw A circular comb according to claim 6, wherein a pin is received in the threaded hole (45) of the additional means (46).   The circular comb according to any one of claims 1 to 3, wherein outer surfaces of the hollow molded body (20) and the mass compensation element (AG1) form a closed peripheral surface.   The circular comb according to any one of claims 1 to 8, wherein the hollow molded body of the base body (20) is an aluminum extruded molded body.   The mass compensation element (AG1) and the shaft (15) are provided with a groove (33), and the mass compensation element (AG1) is keyed with respect to the shaft (15) via the groove (33). The circular comb according to claim 2, which is positioned at a position determined in a circumferential direction of the shaft by using (33). The outer surfaces of the hollow molded body (20) and the mass compensation element (AG1) form a closed peripheral surface,
The circular comb according to claim 3, wherein covers (38, 39) for closing the hollow spaces (H1-H5) are attached to both ends of the hollow molded body (20).   5. The circular comb according to claim 4, wherein the mass compensation element (AG1) is coupled to the shaft (15) via additional attachment means (S2).   When viewed in the rotational direction (L) of the circular comb (R), the thickness (d1, d2) of the outer portion (23) of the base body (20) is formed to be reduced to a stepped shape (A1). The circular comb according to any one of claims 1 to 12, wherein:   The peripheral surface (U) of the outer portion (23) of the base body (20) that supports the combing garment (G) has at least one step portion (A1). The circular comb according to claim 13, wherein the step (Z1) provided on the combing needle cloth (G) faces A1).

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