CN217231044U

CN217231044U - Driving mechanism

Info

Publication number: CN217231044U
Application number: CN202220632579.3U
Authority: CN
Inventors: 塞尔瓦拉伊·加内什·库马尔; 瓦兰甘尼·约翰·劳伦斯; 阿鲁纳恰拉姆·约翰达尔恩
Original assignee: Lakshmi Machine Works Ltd
Current assignee: Lakshmi Machine Works Ltd
Priority date: 2021-03-22
Filing date: 2022-03-22
Publication date: 2022-08-19
Anticipated expiration: 2032-03-22
Also published as: TR2022003678U5

Abstract

The utility model discloses a drive mechanism to a separation roller for weaving comber, this drive mechanism includes: a swinging clamp drive shaft at the bottom having a rocker arm; a rotating main drive shaft having a first crank; and a separation roller drive shaft having a second crank; the drive mechanism is characterized in that the first crank of the rotating main drive shaft and the second crank of the separator roller drive shaft are respectively articulated to two different pivot points on the rocker arm by a connecting member and a pair of connecting rods, thereby forming a three-way linkage between the gripper drive shaft and the separator roller drive shaft, and the oscillating drive is differentially transmitted from the gripper drive shaft to the separator roller drive shaft by the connecting rods. According to the utility model discloses, can optimize the acceleration/deceleration of combed wool when connecting, in addition, the utility model discloses have less ground/effort when providing better wool quality.

Description

Driving mechanism

Technical Field

The utility model relates to a spinning preliminary working machine, more specifically, the utility model relates to a actuating mechanism for weaving combing machine's separation roller.

Background

Spinning primary machines, such as carding machines, combing machines, are used to process the fibers and optimize them for further spinning machines. Combing machines are spinning primary machines of increasing quality, the main purpose of which is to remove noil. Known textile combing machines have eight combing heads, each comprising a gripper unit, a combing unit and a separating roller unit. Each combing head handles a separate fiber winding roller. A predetermined length of fiber is fed to a gripper unit having two oscillating gripper plates, a top gripper plate and a bottom gripper plate. The gripper unit grips the fed fiber each time during its oscillating forward movement, thereby making one side of the fiber bundle hang outside. At the same time, the continuously rotating circular/cylindrical combing unit combs out staple fibers from the suspended fibers. Then, the combed fiber is further moved toward a pair of separation rollers by the forward movement of the clamp plate. During the forward movement of the web, the pair of separation rollers rotate in opposite directions to move the previously pulled web backward. Whereby the trailing end of the previous web and the leading end of the newly combed web overlap. Subsequently, when the pair of separation rollers is rotated in the fast-forwarding direction, the web is pulled out from the gripper unit, and the rear end of the web is combed by the top combing portion and then spliced into the web. When such an operation is repeated, the web fed by the corresponding combing head is bunched and drawn. Subsequently, the press roll device compresses the bunched and drawn web to form combed sliver.

Typically, the separation roller pair is driven by a known six-bar mechanism disclosed in application No. 2688/CHE/2009. As shown in fig. 1, the driving apparatus includes: a swinging bottom clamp shaft 1 having a rocker 1 a; a rotating main drive shaft 2 having a first crank 2 a; and a separation roller 3, on which a second crank 3a is arranged; wherein the first crank 2a and the second crank 3a are respectively hinged to the same point on the rocker 1a through connecting rods 4 and 5. Due to the fact thatHere, the above-described rocker 1a, the first crank 2a of the main drive shaft, the second crank 3a of the separator roller, the links 4, 5, and the virtual joint region VL form a differential six-bar mechanism to drive the separator roller 3. The differential six-bar mechanism is used to drive the separator rolls at machine speeds up to 600 nips per minute. Thus, the separation roller motion profile is optimized to optimize at lower accelerations/decelerations (about < 300 m/s) ² ) It becomes difficult to obtain higher machine speeds to achieve better combed wool quality.

As machine speeds increase beyond 600 nips per minute, the mechanical forces increase, which results in an increase in load bearing, power, vibration, noise and heat to unacceptable levels. Therefore, to achieve higher machine speeds, it is desirable to reduce the load bearing and machine vibration, which can be achieved by optimizing the separation roll motion profile. Known separation roller drive mechanisms cannot be easily optimized due to the complex linkage assembly and its flexibility. Therefore, there is a need to create an alternative separator roller mechanism that overcomes the disadvantages described.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide an improved linkage mechanism for driving a separation roller and achieving higher speeds by simplifying the linkage.

It is another object of the present invention to provide an optimally set angular range for the movement of the separation roller.

It is yet another object of the present invention to minimize the size of the working parts, thereby reducing machine vibration and power consumption.

The following disclosure presents a simplified summary of the invention in order to provide a basic understanding of some features of the invention. This summary is not an extensive overview of the invention. This summary is not intended to identify key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts of the invention in a simplified form as a prelude to the more detailed description of the invention that is presented later.

An aspect of the utility model is to provide a drive mechanism for the separation roller of weaving comber, drive mechanism includes:

a swinging clamp drive shaft at the bottom, the clamp drive shaft having a rocker arm;

a rotating main drive shaft having a first crank; and

a separation roller drive shaft having a second crank;

the drive mechanism is characterized in that the first crank of the rotating main drive shaft and the second crank of the separator roller drive shaft are respectively articulated to two different pivot points on the rocker arm by a connecting member and a pair of connecting rods, thereby forming a three-way linkage between the gripper drive shaft and the separator roller drive shaft, and the oscillating drive is differentially transmitted from the gripper drive shaft to the separator roller drive shaft by the connecting rods.

In a preferred embodiment of the invention, the tertiary linkage comprises three pivot joints such that the angle between at least two pivot points of the three pivot joints is 3 ° to 8 °.

In another preferred embodiment, the angle between at least two pivot points of the three pivot joints is 6 ° with the radial center of the gripper drive shaft as the angular center.

In a preferred embodiment, the pivot points and the radial centre of the clamp drive shaft form a triple junction area having three sides of unequal length, wherein the side of the triple junction area having the shortest length is adapted to determine the distance between two of the pivot points.

In another preferred embodiment, the ratio of the lengths of the remaining two sides of the triple junction region is 0.5 to 1.

In a more preferred embodiment, the ratio of the lengths of the remaining two sides of the triple junction region is 0.5 to 0.9.

In the most preferred embodiment, the ratio of the lengths of the remaining two sides of the tertiary bond area is 0.75.

According to the present invention, a six-bar mechanism having the above-described triple junction area characteristics can be configured to optimize the separator roller motion for optimizing the acceleration/deceleration of combed wool when joining.

Furthermore, the mechanism according to the invention produces better quality combed wool even at higher speeds up to 800 nips per minute. Furthermore, even at higher speeds and production rates, the present invention provides better wool quality while having less ground/force because of the minimal mechanical forces and reduced bearing loads.

Other salient features and advantages of the invention will become apparent to those skilled in the art from the following detailed description of exemplary embodiments of the invention, which is disclosed in connection with the accompanying drawings.

Drawings

The above and other aspects, features and advantages of certain exemplary embodiments of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

fig. 1 shows a prior art six-bar mechanism driven by a separator roller.

Fig. 2a shows a ternary engagement area separation roller drive mechanism according to the present invention.

Fig. 2b shows another preferred embodiment according to the invention.

Fig. 3 shows the drive linkage of the present invention.

Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve understanding of various exemplary embodiments of the present disclosure. It should be noted that throughout the drawings, the same reference numerals are used to describe the same or similar elements, features and structures.

Detailed Description

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention. The following description includes various specific details to aid understanding, but these details are to be considered exemplary only.

Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the invention. Moreover, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

The terms and words used in the following description are not to be construed in a bibliographic sense, but rather are used only to achieve a clear and consistent understanding of the invention. Therefore, it will be apparent to those skilled in the art that the following description of the exemplary embodiments of the present invention are provided for illustration only and not for the purpose of limiting the invention as defined by their equivalents.

It should be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

The subject matter of the utility model is a drive mechanism for the separation roller of weaving comber, drive mechanism includes:

a rotating main drive shaft having a first crank; and

a separation roller drive shaft having a second crank;

In a preferred embodiment, the pivot points and the radial center of the clamp drive shaft form a triple junction area having three sides of unequal length, wherein the side of the triple junction area having the shortest length is adapted to determine the distance between two of the pivot points.

In the most preferred embodiment, the ratio of the lengths of the remaining two sides of the triple junction region is 0.75.

A combing machine with an improved detaching roller mechanism according to the invention is shown in fig. 2 a. The utility model discloses six rod mechanism that well description includes: a swing arm 1a pivotally fixed to the clamp driving shaft 1; a separation roller crank 3a coupled to the separation roller drive shaft 3; and a main drive crank 2a coupled to the main drive shaft 2. The

cranks

3a, 2a are articulated to the rocker arm 1a by means of connecting rods 5 and 4, respectively. This forms the swing angle θ for the triple junction region of the rocker arm 1 a. The links 5 and 4 are hinged at

pivot points

6 and 7, respectively, provided in the rocker 1 a. Thus, the swing drive from the gripper drive shaft 1 is differentially transmitted to the separation roller shaft through the links 5, 4.

As shown in fig. 2a, the nodes or

pivot points

6, 7 and the radial center 8 of the clamp drive shaft 1 form a triple junction area 9 with 9a, 9b and 9c as outer rims. Thus, according to the present invention, the ternary engagement area is never an isosceles triangle. And therefore the triple junction area is formed such that the edge 9a of the shortest length of the triple junction area always determines the distance between the two nodes or

pivot points

6, 7. According to the proposed six-bar drive as shown in fig. 2b with the pivot point 7 displaced upwards, in order to solve the problem of the background art, the triple junction area 9 has a rocking angle θ 1 formed by the internal angle between two

adjacent sides

9b, 9c of the triangle. The vertex to which said sides join is connected to the clamp shaft by a rotary joint 8, preferably with θ 1 in the range 3 ° < θ 1 < 8 °, and in particular 6 °. The range of the rocking angle θ 1 can be varied by varying the distance 9a between the pivot points 6, 7. On the other hand, the rocking angle θ 1 can be changed by changing the length of any adjacent side 9b and/or 9c of the joining region.

As depicted in fig. 2a and 2b, the position of the pivot point 7 may be selected according to requirements or optimization needs. According to the ratio of the two edges of the triple junction region of the present invention, the length of one adjacent edge of the junction region is smaller than that of the other adjacent edge. The ratio 9c/9b, defined as the ratio of the length of the smaller adjacent side of the splicing region to the length of the larger adjacent side of the splicing region, is preferably in the range of 1 ≧ 9c/9b ≧ 0.5, and more preferably 0.9 ≧ 9c/9b ≧ 0.5, and specifically 0.75.

Fig. 3 of the accompanying drawings shows a linkage system according to the invention, wherein the engagement arrangement is according to the embodiment of fig. 2 a. The linkage system is provided at the head mount end of the combing machine to make the necessary adjustments to the head of the entire combing machine. The rocking angle θ or θ 1 can be varied by appropriate selection of the link 5 (shown in fig. 2a, 2 b) or by positioning of the other link 4.

According to the present invention, a six-bar mechanism having the above-described triple-joint area characteristics can be configured to optimize the separator roller motion for optimizing the acceleration/deceleration of combed wool (i.e., about 300 m/s) when joining ² )。

Furthermore, the mechanism according to the present invention produces good quality combed wool even at higher speeds up to 800 nips per minute. Furthermore, even at higher speeds and production rates, the present invention provides better wool quality while having less ground/force because of the minimal mechanical forces and reduced bearing loads.

All changes, modifications, and variations that come within the meaning and range of equivalents are to be considered within the scope and spirit of the invention in view of the disclosure to which the invention is entitled. It should be understood that the aspects and embodiments of the present disclosure described above may be used in any combination with each other. The various aspects and embodiments may be combined together to form another embodiment of the disclosure.

Claims

1. A drive mechanism for a separator roller of a textile combing machine, the drive mechanism comprising:

a swinging gripper drive shaft (1) at the bottom, said gripper drive shaft having a rocker arm (1 a);

a rotating main drive shaft (2) having a first crank (2 a); and

a separation roller drive shaft (3) having a second crank (3 a);

characterized in that the first crank (2a) of the rotating main drive shaft (2) and the second crank (3a) of the separator roller drive shaft (3) are articulated to two different pivot points (6, 7) on the rocker arm (1a) by means of a connecting member and a pair of connecting rods (5, 4), respectively, so as to form a three-way linkage between the gripper drive shaft (1) and the separator roller drive shaft (3) and to transmit the oscillating drive differentially from the gripper drive shaft (1) to the separator roller drive shaft (3) by means of the connecting rods (5, 4).

2. The drive mechanism as recited in claim 1, wherein the tertiary linkage comprises three pivot joints such that an angle between at least two pivot points of the three pivot joints is 3 ° to 8 °.

3. The drive mechanism according to claim 2, characterized in that the angle between at least two pivot points of the three pivot joints with the radial center (8) of the gripper drive shaft (1) as the angular center is 6 °.

4. The drive mechanism according to claim 3, characterized in that the pivot points (6, 7) and the radial center (8) of the gripper drive shaft (1) form a triple junction area (9) with three sides (9a, 9b, 9c) of unequal length, wherein the side of the triple junction area with the shortest length is adapted to determine the distance between the two pivot points (6, 7).

5. The drive mechanism according to claim 4, characterized in that the ratio of the lengths of the remaining two sides (9c, 9b) of the triple junction area (9) is 0.5 to 1.

6. The drive mechanism according to claim 5, characterized in that the ratio of the lengths of the remaining two sides (9c, 9b) of the triple junction area (9) is 0.5 to 0.9.

7. The drive mechanism according to claim 5, characterized in that the ratio of the lengths of the remaining two sides (9c, 9b) of the triple junction area (9) is 0.75.