Shaftless separating roller
By using a shaftless separating roller design, and utilizing a hollow cylinder and convex coupling elements, the problem of increased inertial load on the hollow separating roller in the combing machine is solved, thereby improving fiber quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2026-03-10
AI Technical Summary
In existing combing machines, the inertial load on the unloaded separating roller increases during startup and shutdown, affecting the quality and rhythm of the separating roller, leading to increased stress and potentially damaging fiber quality.
The shaftless separating roller design includes a hollow cylinder, a rubber layer, and a convex coupling element. The hollow cylinder is made of lightweight metal or composite material to reduce mass and is driven by the convex coupling element to reduce moment of inertia.
It reduces the inertia of the unloaded separating roller, improves the quality and rhythm of the combing machine, reduces the impact of stress on the fiber, and improves the cleanliness and regularity of the fiber.
Smart Images
Figure CN121629573A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present invention relates to a separating roller. More specifically, the present invention is dedicated, but not exclusively, to shaftless separating rollers. BACKGROUND
[0002] The present invention relates to a separating roller in which a thin web of fibers, also known as a sliver, is selected, drawn and combed, in order to transform the extended fiber clusters into a new sliver which constitutes a higher value product, with a high proportion of parallel fibers and fewer short fibers, which are separated during processing. The sliver produced by means of the combing process is therefore made of cleaner, more regular and more durable combed fibers. The slivers processed by the combing heads of the combing machine are then combined to form a web or band of combed fibers.
[0003] Today, the combing operation can be carried out at a pace of 550 to 600 strokes per minute. The stress to which the moving parts are subjected, which undergo repeated "stop and start" or "back and forth" movements, constitutes one of the key aspects of the combing machine, since acceleration and deceleration can exert stresses on the separating rollers and can affect the quality of the combed fibers.
[0004] In particular, the separating rollers are arranged in pairs, each pair of separating rollers consisting of a first roller of metallic material, having a scored surface, the movement of which is driven by control means, and a second roller of elastic material, preferably hard rubber, having a smooth surface, the rotation of which is guided by the metallic roller, the second roller being in pressure contact with the metallic roller. In particular, the two rollers will be identified in the following description as power separating roller and idling separating roller, respectively.
[0005] In order to simplify the combing machine, the idling separating roller of the combing head is firmly pressed against the power separating roller and is driven by the movement of the power separating roller. One drawback of this device is the multiplication of the inertial loads that this single driving body must resist both in the course of the normal operation and in the starting and stopping steps of the separating rollers.
[0006] The present invention therefore relates to reducing the mass moment of inertia of the idling separating roller, in order to improve the quality and the pace. SUMMARY
[0007] In order to achieve this aim, according to one aspect of the present invention, the present invention can provide a shaftless separating roller for a combing machine, preferably an idling shaftless separating roller, said shaftless separating roller comprising:
[0008] - a hollow cylinder comprising a center, an inner radius, a first volume comprised between the center and the inner radius, an outer radius, and a second volume comprised between the outer radius and the inner radius and surrounding the first volume; the first volume comprising two female coupling means at each end of the hollow cylinder and a hollow volume between the two female coupling means;
[0009] - a rubber layer: the rubber layer is disposed on the second surface; and
[0010] - a male coupling element: the male coupling element is configured to be inserted in the two female coupling means,
[0011] so as to drive the shaftless separating roller.
[0012] Therefore, this arrangement allows the moment of inertia of the shaftless separating roller to be greater than the moment of inertia of a usual idle separating roller.
[0013] According to one embodiment, the hollow cylinder is made of light metal, light metal alloy and / or composite material.
[0014] Therefore, this arrangement allows the hollow cylinder to reduce its mass and, consequently, its inertia. BRIEF DESCRIPTION OF DRAWINGS
[0015] The foregoing and other objects, features, aspects and advantages of the present application will become more apparent from the following detailed description of embodiments, which, taken in conjunction with the accompanying drawings, illustrates by way of example the principles of the application. The same reference numbers in different drawings identify the same or similar elements or components.
[0016] - Figure 1 is a side view of a shaftless idle separating roller 100 in a combing machine; and
[0017] - Figure 2 and Figure 3 shows a cross-sectional view of the shaftless separating roller 100 according to an embodiment of the present application.
[0018] In the rest of the drawings and of the description, the same reference numbers indicate the same or similar elements. Moreover, the various elements are not represented to scale in order to facilitate the clarity of the drawings. Moreover, the different embodiments and variants are not mutually exclusive and can be combined with each other. DETAILED DESCRIPTION
[0019] Figure 1A cross-section of the combing station 2 on the combing machine 4 is schematically shown. In practice, eight such combing stations 2 are arranged side by side. Each combing station 2 consists of a clamp assembly 10, simply referred to as a clamp, which performs the reciprocating motion of the clamp 10 by means of a front swing member 12 and a rear swing member 14. The front swing member 12 is rotatably mounted on the comb shaft 16 and the front clamp shaft 18 of the clamp 10. The rear swing member 14 is rotatably fixed to the driven clamp shaft 22, which is mounted on the rear clamp shaft 20 of the clamp 10, allowing it to move rotatably. Wool 26 is fed into a feed cylinder 24 installed inside the clamp 10, allowing it to move rotatably. The wool 26 is unwound from a lap roller (not shown) located on a winding roller (not shown) for the unwinding operation.
[0020] exist Figure 1 In the illustrated position, clamp 10 is open, i.e., the upper clamp plate 11 is mounted such that it can pivot relative to the lower clamp plate 13 on the clamp journal 25 and thus be lifted from the lower clamp plate 13, and clamp 10 is in a forward position, wherein the fiber clusters 28 protruding from clamp 10 are attached to the fiber ends 30 of the fibrous nonwoven fabric 32 that has been formed and bonded thereto. The fibrous nonwoven fabric 32 is held here by a pair of separating rollers 34, which perform rotational motion for bonding and tearing operations, and thereby move the fibrous nonwoven fabric 32 and / or its fiber ends 30 in the conveying direction.
[0021] As mentioned, the pair of powered separating rollers 34 move alternately clockwise and counterclockwise, rotating in one direction or the other, allowing the shaftless unloaded separating roller 100 to be driven in one direction and then in the other.
[0022] Figure 2 A shaftless separating roller 100 according to an embodiment of the present invention is shown in cross-section, wherein the shaftless idle separating roller 100 comprises a plurality of components mounted together, and is shown in both overall and cross-sectional views. Specifically, Figure 2 The shaftless separating roller 100 is shown in detail. The shaftless separating roller 100 is an unloaded separating roller and includes a hollow cylinder 110, a rubber layer 120, and a convex coupling element 130. The hollow cylinder 110 includes a center 111, an inner radius 112, a first volume 113 included between the center 111 and the inner radius 112, an outer radius 117, and a second volume 118 included between the outer radius 117 and the inner radius 112 and surrounding the first volume 113, and the rubber layer 120 is disposed thereon.
[0023] The first volume 113 includes two concave coupling mechanisms 115 at each end of the hollow cylinder 110 and a hollow volume between the two concave coupling mechanisms 115. Complementing the concave coupling mechanisms 115 is a convex coupling element 130 configured to insert into the two concave coupling mechanisms 115 to allow the shaftless unloaded separating roller 100 to rotate about the convex coupling element 130.
[0024] A typical unloaded separating roller has its mass close to the center, while the shaftless separating roller 100 of the subject matter of this invention can have its mass far from the center 111. For the same angular momentum, the same volume, and / or the same weight, the moment of inertia of the shaftless separating roller 100 should be greater than that of a typical separating roller because the mass of the shaftless unloaded separating roller 100 is far from the center 111; surprisingly, this is not the case in this invention.
[0025] In fact, the overall hollow construction of the separating roller 100 allows for a significant reduction in its mass and thus its inertia. According to one embodiment, the hollow cylinder 110 may be made of light metals, light metal alloys, and / or composite materials to further reduce its inertia. As can be understood from this specification, it is easier to displace the mass of the pair of powered separating rollers 34 because the pair of separating rollers 34 is powered and is a motor that controls the movement of the pair of separating rollers 34, rather than the shaftless unloaded separating roller 100, since the pair of separating rollers 34 may not be powered and may not be controlled in the same way.
[0026] refer to Figure 2 and Figure 3 The image shows a shaftless separating roller 100 in detail. The shaftless separating roller 100 is an unloaded separating roller 100 comprising a hollow cylinder 110, a rubber layer 120, and a convex coupling element 130. The hollow cylinder 110 includes a center 111, an inner radius 112, a first volume 113 included between the center 111 and the inner radius 112, an outer radius 117, and a second volume 118 included between the outer radius 117 and the inner radius 112 and surrounding the first volume 113, and the rubber layer 120 is disposed thereon.
[0027] The first volume 113 includes two concave coupling mechanisms 115 at each end of the hollow cylinder 110 and a hollow volume between the two concave coupling mechanisms 115. Complementing the concave coupling mechanisms 115, there is a convex coupling element 130 configured to be inserted into the two concave coupling mechanisms 115 to allow the shaftless separating roller 100 to rotate about the convex coupling element 130.
[0028] According to preferred embodiments of the invention, the invention is described in an illustrative and not restrictive manner, but it should be understood that variations and / or modifications can be made by those skilled in the art without departing from the relevant scope of protection defined by the appended claims.
Claims
1. An axleless separating roller (100) for a combing machine (200), the axleless separating roller comprising: - a hollow cylinder (110): the hollow cylinder (110) comprises a center (111), an inner radius (112), a first volume (113) comprised between the center (111) and the inner radius (112), an outer radius (117), and a second volume (118) comprised between the outer radius (117) and the inner radius (112) and surrounding the first volume (113); the first volume (113) comprises two female coupling mechanisms (115) at each end of the hollow cylinder (110); - a rubber layer (120): the rubber layer (120) is provided on the second volume (118); and - a male coupling element (130): the male coupling element (130) is configured to be inserted into the two female coupling mechanisms (115) in order to drive the axleless separating roller (100).
2. The axleless separating roller (100) according to claim 1, wherein the hollow cylinder (110) is made of light metal, light metal alloy and / or composite material.