KR101609617B1 - Comber - Google Patents

Abstract

The comer includes a plurality of combing heads each including a combing portion, and a cylinder axis formed to rotate all the combing portions. Each of the coaming portions includes a plurality of brackets fixed to the cylinder shaft and rotatable integrally with the cylinder shaft, and a circular comb and a balance weight fixed to the cylinder shaft by the bracket. The cylinder shaft is divided into a plurality of shaft portions in a longitudinal direction so that a joint between the shaft portions is located at a position facing one of the coaming portions. The joint is located between the brackets.

Description

Comer {COMBER}

The present invention relates to a comber.

The comer includes a workpiece having a plurality (generally eight) of combing heads. Each combing head operates to form a sliver from the lap. The lap is transported by a predetermined amount at one time by a lap roller and a feed roller. The combing portion combs the distal end of the lap held by a nipper unit including a lower nipper and an upper nipper. The nipper unit is moved forward to allow the deflected fleece to move toward the detaching roller. At the same time, the fetching roller reversely rotates to move the acquired fleece (leading fleece) backward. The tip of the newly deflected fleece (follower fleece) is located above the back end of the leading fleece. Then, the derricking roller is rotated to take over the subsequent fleece from the nipper unit, and the top comb combines the rear end of the fleece. By repeating this process, the fleece produced in each coaming head is clumped and drafted. The calender roller then compresses the fleece to form a sliver.

Patent Document 1 discloses a coaming portion including a cylinder shaft and a plurality of bosses (brackets) fixed to the cylinder shaft and rotated integrally with the cylinder shaft. A circular comb and balance are added to the boss.

Further, in Patent Document 2, there is described a coupler that connects the cylinder axis to the output shaft of the driving portion located at the end of the base.

German Published Patent Application No. 10163663A1 Japanese Laid-Open Patent Publication No. 1-117157

If the cylinder axis is a single, undivided axis, the cylinder axis is too long to work on a common lathe, so a special lathe designed for long axes is needed. Alternatively, the cylinder shafts may be longitudinally divided into respective parts that are coupled together for the coupler and rotate integrally. In this case, if the joints between the parts are arranged between adjacent combing heads, the cylinder axis needs to be extended to provide space for aligning the coupler. However, the longer cylinder axis is disadvantageous for increasing the work speed of the comer.

The extension of the cylinder axis can be avoided by positioning the joint of the cylinder axis at a position facing the combing portion. In this case, however, the coaming portion facing the joint faces the coupler. Therefore, if the coaming portion is constructed as described in Patent Document 1 and the joints of the cylinder shaft and the coupler are arranged at the positions facing the coaming portion, the joint and the coupler are arranged between the brackets.

However, the couplers arranged between the brackets interfere with the balance weights. This results in deformations of the balance weight. Therefore, the shape of the balance weight of the coaming portion facing the coupler is different from the shape of the balance weight of the coupling portion that does not face the coupler. The cylinder axis does not rotate at a fixed speed, but is accelerated and decelerated. Further, the load acting on the cylinder axis is changed when the combing portion combines the fleece, causing a significant change in the torque between the normal rotation and the rotation in the reverse rotation direction. Thus, the rotational balance difference of the connection between the combing head with the coupler and the combing head without the coupler increases the vibration of the cylinder axis.

It is an object of the present invention to provide a comer including a cylinder axis divided longitudinally without any difference in the extension of the cylinder axis or the rotational balance between the combing heads.

In order to achieve the above object, one embodiment of the present invention is a combter comprising a plurality of combing heads each including a combing portion and a cylinder axis formed to rotate all the combing portions. Each of the combing portions includes a plurality of brackets which are fixed to the cylinder shaft and integrally rotatable with the cylinder shaft, and a round comb and a balance weight fixed to the cylinder shaft by the bracket. The cylinder shaft is divided into a plurality of shaft portions in the longitudinal direction so that the joint between the shaft portions is located at a position facing one of the coaming portions. The joint is located between the brackets.

Other aspects and advantages of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the preferred embodiments together with the accompanying drawings, wherein: FIG.
1 is a side perspective view showing a combing head;
2 is a schematic cross-sectional view showing a joint between a cylinder shaft and a combing portion;
3 is an enlarged view showing a connecting portion of the shaft portion of the cylinder shaft of Fig. 2;
Fig. 4 is a side view showing the combing portion of Fig. 2; Fig.
5 is a partial cross-sectional view showing a connecting portion of a shaft portion of another embodiment.

One embodiment will be described with reference to Figs. 1 to 4. Fig.

Generally comer) includes a working portion including eight coaming heads 11. [ 1, each of the coaming heads 11 includes two wrap rollers 12, a nipper unit 14 including a feed roller 13, a combing portion 15, (16), and two front derricking rollers (17). The nipper unit 14 includes a nipper frame 18 which swings back and forth at the upper portion of the coaming portion 15. A lower nipper 19 is disposed at the lower end of the nipper frame 18. [ The support shaft 18a rotatably connects the nipper frame 18 to the nipper arm 20. As shown in Fig. An upper nipper 20a is fixed to the distal end of the nipper arm 20. [ The upper nipper 20a cooperates with the lower nipper 19 to grip the lap L by opening and closing at a predetermined time in synchronism with the forward and backward oscillations of the nipper frame 18. [ The nipper frame 18 is connected to a top comb 21 located in front of the lower nipper 19. The upper comb 21 is synchronized with the nipper frame 18 and moves in a predetermined manner.

A nipper shaft 22 which rotates forward and backward is disposed below the rear nipper frame 18 of the coaming section 15. [ The nipper shaft 22 is fixed to one end of the nipper frame drive arm 23 so that the nipper frame drive arm 23 rotates integrally with the nipper shaft 22. The other end of the nipper frame drive arm 23 rotatably supports the rear end of the nipper frame 18 via the support shaft 23a. The front end of the nipper frame 18 is rotatably supported by the distal end of the support arm 25 via the support shaft 25a. The support arm (25) is rotatably supported by the cylinder shaft (24). The forward and backward rotation of the nipper shaft 22 moves the nipper frame 18 back and forth so that the distal end of the lower nipper 19 moves toward or away from the derricking rollers 16 and 17. The rotation of the drive shaft driven by the main motor (not shown) is transmitted to the cylinder shaft 24 and the nipper shaft 22 through a mechanical system including a gear and a crank. The nipper unit 14 and the combing portion 15 are driven in synchronism.

The coaming portion 15 and the cylinder shaft 24 will be described in detail.

2, the frame 27 rotatably supports the portions of the cylinder shaft 24 corresponding to the opposite ends of the coaming portion 15 through the bearing 26. As shown in Fig. The combing unit 15 includes a plurality of brackets 28 fixed to the cylinder shaft 24 and rotating integrally with the cylinder shaft 24, a round comb 29 fixed to the bracket 28, and a balance weight 30 . That is, the bracket 28 fixes the circular comb 29 and the balance weight 30 to the cylinder shaft 24. [

As shown in Fig. 4, each bracket 28 is circular, and each bracket 28 includes a central portion including an insertion hole 28a into which the cylinder shaft 24 is fitted. The bracket 28 includes a slit 28b extending radially in order to connect the outer periphery of the bracket 28 with the insertion hole 28a. The bracket 28 also includes two symmetrical holes 28c disposed on opposite sides of the slit 28b. Each hole 28c extends perpendicularly to the slit 28b and includes a step. The bolts 31 and the nuts 32 inserted into the holes 28c fasten the brackets 28 to fix the brackets 28 to the cylinder shafts 24 inserted into the insertion holes 28a. The plurality of bolts 29a fix the circular comb 29 to the bracket 28. The bolt 30a fixes the balance weight 30 to the bracket 28. [

2, the cylinder shaft 24 is divided into a plurality of shaft portions 24a such that a joint between the shaft portions 24a is positioned at a position facing one of the coaming portions 15 in the longitudinal direction . Further, the joint of the cylinder shaft 24 is located between the brackets 28. [ As shown in Figs. 2 and 3, each of the shaft portions 24a includes a thread portion 34. As shown in Fig. The shaft portions 24a are interconnected by a coupling between the threaded portions 34. [ Each of the shaft portions 24a includes a connecting portion including a fitting joint portion 33 for coaxial alignment. In the present embodiment, the cylinder shaft 24 is divided into three shaft portions 24a.

As shown in Fig. 3, the threaded portion 34 includes a tapered thread. One of the adjacent shaft portions 24a has one end including a male screw portion 34a and a cylindrical male portion 33a extending from the distal end of the male screw portion 34a. The male thread portion 34a includes a tip having a smaller diameter than the shaft portion 24a. The projecting portion 33a has a diameter smaller than that of the distal end of the male screw portion 34a. The male screw portion 34a and the projecting portion 33a are formed coaxially. The other of the adjacent shaft portions 24a has one end including a female threaded hole 34b that engages with the male threaded portion 34a and a cylindrical recess 33b into which the projected portion 33a is fitted. The recess 33b is coaxially connected with the female screw hole 34b. The projecting portion 33a and the recess 33b form a fitting joint portion 33.

The length of the projection 33a is shorter than the depth of the recess 33b. The end face 34c of the shaft portion 24a surrounding the tip end of the male screw thread portion 34a is engaged with the adjacent shaft portion 34b surrounding the female screw hole 34b when the male screw thread portion 34a and the female screw hole 34b are mutually engaged, And contact with the end face 34d of the recessed portion 24a. That is, when the shaft portions 24a are mutually connected, the end surface 34c and the end surface 34d function as opposed surfaces and contact with each other.

The operation of this embodiment will be described.

While the comer is operating, a driving part driven by the main motor (not shown) rotates the nipper shaft 22. The rotation of the nipper shaft 22 turns the nipper frame 18 and the lower nipper 19 back and forth. This moves the upper nipper 20a in the vertical direction to grip or release the lap L together with the distal end of the lower nipple 19. [ The circular comb 29 of the combing portion 15 combs the distal end of the wrap (L) held by the nipper unit (14).

The coaming portion 15 is rotated at a predetermined speed according to the spinning condition. The circular comb 29 passes under the lower nipper 19 at predetermined time intervals. The rotation of the nipper shaft 22 synchronized with the rotation of the coaming section 15 causes the nipper frame 18 to swing back and forth within a predetermined range.

The cylinder shaft 24 is divided into a plurality of shaft portions 24a in the longitudinal direction. The shaft portions 24a are interconnected and integrally rotated. Unlike an unsegmented cylinder axis, the cylinder axis 24 is divided into a shaft portion 24a having a length that can be manufactured by a general lathe. Thus, the cylinder axis 24 according to the present embodiment does not require a special lathe designed for a long cylinder axis.

The joints of the cylinder shafts 24 are located between the brackets 28 forming the coaming portion 15. Thus, unlike when the joint is located between adjacent coaming portions 15, it is not necessary to extend the cylinder axis 24. Instead of using a dedicated coupler for connecting the shaft portions 24a of the cylinder shaft 24 to integrally rotate the shaft portions 24a, a bracket 28 for forming the coaming portion 15, (29) and the balance weight (30) act as a coupler. This eliminates the need for a dedicated coupler and ensures that the balance weight 30 of the coaming portion 15 including the joint of the cylinder axis 24 has the same shape as the balance weight 30 of the coaming portion 15 that does not include a joint can do. Thus, the coaming head 11 with the joint and the coaming head 11 without the joint have the same rotational balance in the coaming portion 15. [ This limits the vibration of the cylinder shaft 24.

The present embodiment has the following advantages.

(1) The comer includes a plurality of coaming heads 11 each including a coaming portion 15 and a cylinder axis 24 for rotating all the coaming portions 15. Each of the coaming portions 15 includes a plurality of brackets 28 fixed to the cylinder shaft 24 and rotatable integrally with the cylinder shafts 24 and a plurality of brackets 28 fixed to the cylinder shafts 24 by brackets 28, (29) and a balance weight (30). The cylinder shaft 24 is divided in the longitudinal direction into a plurality of shaft portions 24a such that a joint between the shaft portions 24a is located at a position facing one of the coaming portions 15. [ The joint is located between the brackets 28. Thus, the use of longitudinally divided cylinder shafts 24 does not extend the cylinder shafts 24 or change the rotational balance between the combing heads 11. [ The present embodiment also uses fewer components because a dedicated coupler is not required for the joint.

(2) The shaft portion 24a is interconnected by a coupling between the threaded portions 34. [ This connection creates a stronger coupling force than a keyed joint and requires less manufacturing cost than a spline joint.

(3) The shaft portion 24a is in mutual contact with the opposite faces at the ends. Compared to a structure in which opposing faces are thus separated, friction between opposing faces prevents the threaded portions 34 from loosening.

(4) Each shaft portion 24a includes a connecting portion including a fitting joint portion 33 for coaxial alignment. Therefore, in comparison with the structure in which the fitting joint portion 33 is not provided, coaxial alignment of the shaft portions 24a is easy when connecting the shaft portions 24a.

(5) The cylinder shaft 24 is divided into three or more shaft portions 24a. In general, the comer includes an even number of combing heads 11. The shaft portions 24a need to have different lengths to locate the joints between the brackets 28 of the coaming portion 15 if the cylinder shaft 24 is divided into two shaft portions 24a. If the shaft portion 24a is half the length of the cylinder shaft 24, it is difficult or impossible to machine the shaft portion 24a in a general lathe. By dividing the cylinder shaft 24 into three or more shaft portions 24a, it is ensured that each shaft portion 24a has a length that can be machined in a general rack.

(6) The threaded portions 34 interconnecting the shaft portions 24a include tapered threads. This allows the projecting portion 33a of the fitting joint portion 33 to be shorter than the male screw portion 34a.

It will be apparent to those skilled in the art that the present invention may be embodied in many other modifications without departing from the spirit or scope of the invention. In particular, it should be understood that the present invention may be embodied in the following forms.

The shaft portion 24a need not be interconnected by a coupling between the threaded portions 34. [ For example, as shown in Fig. 5, the shaft portion 24a can be interconnected with the projecting portion 33a of the fitting joint portion 33 and the recess 33b interdigitated with each other and the opposing faces of the end portions contacting each other.

A key joint or spline joint may be used to interconnect the shaft portions 24a and limit relative rotation between the shaft portions 24a.

The projecting portion 33a and the recess 33b of the fitting joint portion 33 may be truncated conical (truncated conical).

Instead of a tapered thread, the threaded portion 34 may include a common thread.

The shaft portion 24a can be interconnected at the end with the opposite faces separated from each other.

The bracket 28 and the balance weight 30 may be integrally formed.

One coaming portion 15 may include three or more brackets 28.

In this embodiment, the bracket 28 is fixed to the cylinder shaft 24 using the bolts 31 and the nuts 32. Alternatively, one of the opposing portions of the bracket 28 divided by the slit 28b may include a threaded hole, and the bolt 31 is engaged with the threaded hole, It may be fixed to the cylinder shaft 24.

These examples and embodiments are to be considered illustrative, not limiting, and the invention is not to be limited to the details set forth herein, but may be modified within the scope and equivalence of the appended claims.

11: Coaming head
15:
24: Cylinder axis
24a:
28: Bracket
29: Circular Com
30: Balance

Claims (6)

A plurality of combing heads each including a combing portion; And
A comer including a cylinder axis configured to rotate both of the comer portions,
Wherein each of the coaming units includes a plurality of brackets fixed to the cylinder shaft and rotatable integrally with the cylinder shaft, a circular comb and a balance weight fixed to the cylinder shaft by the bracket,
Wherein the cylinder axis is divided into a plurality of shaft portions so that a joint between the shaft portions is located at a position facing one of the comer portions in the longitudinal direction,
The joint being located between the brackets,
Wherein each of the shaft portions includes a connecting portion including a threaded portion,
And said shafts are interconnected by engagement between said threaded portions. delete The method according to claim 1,
Wherein each of the shaft portions includes an end portion including an opposite surface,
And the shaft portions are mutually connected to each other so that the opposed surfaces contact each other. The method according to claim 1,
Wherein said threaded portion comprises a tapered thread. The method according to claim 1,
Wherein each of the connection portions includes a fitting joint portion for coaxial alignment. 6. The method according to any one of claims 1 to 5,
Wherein the cylinder axis is divided into three or more shaft portions.

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