JP2014231661A - Comber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent unevenness of rotation balance between each combing head without extending a cylinder shaft even if a cylinder shaft divided in longer direction is applied.SOLUTION: A comber has multiple combing heads, and combing parts 15 of all combing head is rotated and driven by a common cylinder shaft 24. The combing part 15 comprises multiple brackets 28 fixed to the cylinder shaft 24 rotatable integrally, and a circular comb 29 and a counterweight 30 fixed to the cylinder shaft 24 through the multiple brackets 28. The cylinder shaft 24 is divided in multiple shafts 24a in longer direction so that the division part exists in a part facing to the combing part 15, and the division part is arranged between the multiple brackets 28.

Description

  The present invention relates to a comb.

  The comber includes a working unit in which a plurality of (typically eight) combing heads are arranged. Each combing head is a part that performs a series of operations for creating a sliver from a wrap. The combing head is fed by a predetermined amount by the action of a pair of lap rollers and a feed roller, and the tip of the wrap gripped by the nipper consisting of the bottom nipper and the top nipper is rolled by the combing portion, and the beaten fleece is advanced by the nipper To move toward the detaching roller. Corresponding to the advance of the fleece, the detaching roller reverses, retracts the fleece that was previously taken (preceding fleece), and connects the rear end of the fleece and the tip of the newly beaten fleece (following fleece). Overlapping. Thereafter, the detaching roller is rotated forward to take out the fleece from the nipper, and the rear end of the fleece is beaten by the top comb pierced into the fleece. The fleece produced in each combing head is bundled and drafted by repeating this action, and then compressed by a calendar roller to form a sliver.

  Conventionally, as a combing portion, there is a structure in which a plurality of boss portions (brackets) are fixed to a cylinder shaft so as to be integrally rotatable, and a circular comb and a counterweight are fixed to the boss portions (see Patent Document 1).

  Moreover, the cylinder shaft is connected to the output shaft of the drive part provided in the edge part of the machine stand via the coupling (for example, refer patent document 2).

German Patent Application Publication DE 10163663 A1 JP 2012-117157 A

  When the cylinder shaft is composed of a single shaft without being divided, the length is longer than a length that can be processed by a general lathe, and thus a special lathe for a long shaft is required. When the cylinder shaft is divided in the longitudinal direction and coupled with a coupling so as to be integrally rotatable, when the divided portion is between the combing heads, at least the space for providing the coupling is the length of the cylinder shaft. Becomes longer. However, a longer cylinder shaft is disadvantageous for speeding up.

  If the cylinder shaft is divided at a location facing the combing portion, there is no need to lengthen the cylinder shaft. However, in that case, there is a coupling at a location corresponding to the combing portion where the cylinder shaft is divided, unlike a combing portion where the division location is not provided. In the case where the cylinder shaft division part and the coupling are provided at a place corresponding to the combing part, the configuration disclosed in Patent Document 1 is adopted as the combing part, and the cylinder shaft division part and the coupling are provided between the plurality of brackets. It is conceivable to provide it.

  However, if a cylinder shaft is divided between a plurality of brackets and a coupling is provided, the coupling is obstructed, and the counterweight has a combing portion facing the portion of the cylinder shaft without coupling. It will be different. As a result, the balance in the cross section perpendicular to the axial direction in the combing portion is different. The cylinder shaft is not driven to rotate at a constant speed, but is driven to accelerate and decelerate, and the load fluctuates when the combing section rolls the fleece, and there is a large torque fluctuation in the forward and reverse directions. Therefore, the combing head provided with the coupling and the combing head not provided with the coupling have different rotation balances of the combing portions, and the vibration of the cylinder shaft is increased.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to use a cylinder shaft divided in the longitudinal direction without increasing the length of the cylinder shaft, and variation in rotational balance between the combing heads. It is in providing the comb which can prevent.

  The comb that solves the above problem has a plurality of combing heads, and the combing portion of all the combing heads is rotationally driven by a common cylinder shaft. The combing portion is fixed to the cylinder shaft so as to be integrally rotatable. A plurality of brackets, and a circular comb and a counterweight fixed to the cylinder shaft via the plurality of brackets, and the cylinder shaft is located at a location where the divided portion faces the combing portion. It is divided into a plurality of shafts in the longitudinal direction, and the divided portions are arranged between the plurality of brackets.

  According to this configuration, the cylinder shaft is configured so that a plurality of shafts are connected to rotate integrally, so that the length of each shaft can be processed with a general lathe, unlike a cylinder shaft that is not divided. Therefore, there is no need for a special lathe that can handle long shafts. In addition, since the divided part of the cylinder shaft is arranged between the plurality of brackets constituting the combing portion, it is necessary to increase the total length of the cylinder shaft, unlike the case where the divided part exists between the adjacent combing parts. Absent. Further, in order to connect the shafts so as to be integrally rotatable, a plurality of brackets, a circular comb, and a counterweight constituting the combing portion play a role of coupling instead of using a dedicated coupling. Therefore, even if the cylinder shaft divided in the longitudinal direction is used, the cylinder shaft is not lengthened, and variation in the rotation balance between the combing heads can be prevented.

The plurality of shafts are preferably connected by screws. According to this configuration, the connection strength is superior to the key connection, and the processing cost is lower than that of the spline connection.
It is preferable that the plurality of shafts are connected in a state in which the opposing surfaces of the end portions are in contact with each other. According to this configuration, unlike the case where the opposing surfaces of the end portions are separated from each other, it is easy to suppress the loosening of the screw due to the friction between the opposing surfaces of the end portions.

  It is preferable that the plurality of shafts include an inlay portion for centering at the connecting portion. According to this configuration, it becomes easier to connect the shafts constituting the divided cylinder shafts in a state in which their axial centers coincide with each other as compared with the case where the centering inlay portion is not provided.

  The cylinder shaft is preferably divided into three or more. Since the number of combing heads of the comber is generally an even number, in the case of two divisions, the lengths of the respective shafts constituting the divided cylinder shafts are different in order to arrange the division portions between the plurality of brackets of the combing portion. It becomes a state. If the shaft is half the length of the cylinder shaft, the lathe that performs the machining is not special, but a general-purpose lathe is still too long. However, dividing the shaft into three or more ensures that each shaft can be processed with a general lathe.

  According to the present invention, even when a cylinder shaft divided in the longitudinal direction is used, the cylinder shaft is not lengthened, and variations in rotational balance among the combing heads can be prevented.

The schematic side view of a combing head. Sectional drawing which shows typically the structure of the division | segmentation location and combing part of a cylinder shaft. The enlarged view of the connection part of the shaft in FIG. The side view of a combing part. The fragmentary sectional view which shows the connection part of the shaft of another embodiment.

Hereinafter, an embodiment will be described with reference to FIGS.
In general, a comber includes a working unit provided with eight combing heads. As shown in FIG. 1, the combing head 11 includes a pair of lap rollers 12, a nipper device 14 including a feed roller 13, a combing portion 15, and two pairs of front and rear detaching rollers 16 and 17. . The nipper device 14 has a nipper frame 18 that is disposed so as to be able to swing back and forth above the combing portion 15, and the nipper frame 18 is provided with a bottom nipper 19 at the bottom thereof. A nipper arm 20 is rotatably provided on the nipper frame 18 via a support shaft 18 a, and a top nipper 20 a is fixed to the tip of the nipper arm 20. The top nipper 20a opens and closes at a predetermined timing in synchronization with the forward / backward swinging motion of the nipper frame 18, and cooperates with the bottom nipper 19 to sandwich the lap L. A top comb 21 is attached to the nipper frame 18 so as to perform a predetermined motion in synchronization with the nipper frame 18 in front of the bottom nipper 19.

  A nipper shaft 22 is disposed behind the combing portion 15 and below the nipper frame 18 so as to be reciprocally rotatable. A first end portion of a nipper frame driving arm 23 is fixed to the nipper shaft 22 so as to be integrally rotatable, and a rear end portion of the nipper frame 18 is rotatably supported by a second end portion via a support shaft 23a. ing. The front end of the nipper frame 18 is rotatably supported via a support shaft 25a with respect to the tip of a support arm 25 that is rotatably supported by the cylinder shaft 24. The nipper frame 18 swings back and forth so that the tip portion of the bottom nipper 19 approaches and separates from the detaching rollers 16 and 17 by reciprocating rotation (swinging motion) of the nipper shaft 22. ing. Rotation of a drive shaft driven by a main motor (not shown) is transmitted to the cylinder shaft 24 and the nipper shaft 22 via a mechanical mechanism such as a gear device or a crank, and the nipper device 14 is driven in synchronization with the combing portion 15. It has become so.

Next, the combing portion 15 and the cylinder shaft 24 will be described in detail.
As shown in FIG. 2, the cylinder shaft 24 is rotatably supported by the frame 27 via bearings 26 at locations corresponding to both ends of the combing portion 15. The combing portion 15 includes a plurality of brackets 28 fixed to the cylinder shaft 24 so as to be integrally rotatable, and a circular comb 29 and a counterweight 30 fixed to the plurality of brackets 28. That is, the circular comb 29 and the counterweight 30 are fixed to the cylinder shaft 24 via the plurality of brackets 28.

  As shown in FIG. 4, the bracket 28 is formed in a substantially circular shape, and an insertion hole 28 a into which the cylinder shaft 24 is inserted is formed in a substantially center. A slit 28b extending in the radial direction is formed in the bracket 28 so as to communicate the insertion hole 28a with the outer peripheral portion. In the bracket 28, a hole 28c extending in a direction perpendicular to the slit 28b and having a step is formed symmetrically with respect to the slit 28b. The bracket 28 is fastened and fixed to the cylinder shaft 24 inserted through the insertion hole 28a by bolts 31 and nuts 32 inserted into the holes 28c. The circular comb 29 is fixed to the bracket 28 by a plurality of screws 29a. The counterweight 30 is fixed to the bracket 28 with bolts 30a.

  As shown in FIG. 2, the cylinder shaft 24 is divided into a plurality of shafts 24 a in the longitudinal direction so that the divided portions are present at locations facing the combing portion 15, and the divided portions of the cylinder shaft 24 are divided into a plurality of brackets 28. It is arranged between. As shown in FIGS. 2 and 3, the shaft 24 a is connected by a screw 34, and is provided with an inlay portion 33 for centering at the connecting portion. In this embodiment, the cylinder shaft 24 is divided into three or more.

  More specifically, as shown in FIG. 3, a taper screw is used as the screw 34, and an end portion of one adjacent shaft 24a has a male screw portion 34a having a base end portion smaller in diameter than the shaft 24a, and A projecting portion 33a that protrudes from the tip of the male screw portion 34a and has a smaller diameter than the tip of the male screw portion 34a and has a cylindrical shape is formed in a state in which the centers of both coincide. At the end of the other adjacent shaft 24a, there are a female screw hole 34b that is screwed into the male screw part 34a, and a cylindrical hole 33b that communicates with the female screw hole 34b and into which the convex part 33a can be inserted. Are formed in a state of matching. The convex portion 33 a and the hole 33 b constitute the spigot portion 33.

  The length of the convex portion 33a is shorter than the depth (length) of the hole 33b, and both shafts 24a are connected to the periphery of the proximal end of the male screw portion 34a in a state where the male screw portion 34a and the female screw hole 34b are screwed together. The surface 34c and the end peripheral surface 34d of the female screw hole 34b can come into contact with each other. That is, both shafts 24a are connected in a state where the opposing surfaces of the end portions are in contact with each other.

Next, the operation of the apparatus configured as described above will be described.
During the operation of the comber, the nipper shaft 22 is swung by a driving unit driven by a main motor (not shown). As the nipper shaft 22 is swung, the bottom nipper 19 is swung back and forth together with the nipper frame 18, and the top nipper 20 a is swung up and down to grip and release the lap L between the top end of the bottom nipper 19. Further, the tip of the wrap L gripped by the nipper device 14 is beaten by the circular comb 29 of the combing portion 15.

  The combing section 15 is rotated at a predetermined speed according to the spinning condition, and the circular comb 29 passes under the bottom nipper 19 at a predetermined cycle. On the other hand, the nipper frame 18 is swung back and forth within a predetermined range by the swing of the nipper shaft 22 that is swung in synchronization with the combing portion 15.

  Since the cylinder shaft 24 is divided into a plurality of parts in the longitudinal direction and the plurality of shafts 24a are connected to rotate integrally, the length of each shaft 24a is generally different from that of the non-divided cylinder shafts. A length that can be processed with a conventional lathe, and a special lathe that can accommodate a long cylinder shaft becomes unnecessary.

  Moreover, since the division | segmentation location of the cylinder shaft 24 is arrange | positioned between the some bracket 28 which comprises the combing part 15, unlike the case where a division | segmentation location exists between the adjacent combing parts 15, the full length of the cylinder shaft 24 is shown. There is no need to lengthen. Further, in order to connect the shafts 24a constituting the cylinder shaft 24 so as to be integrally rotatable, the plurality of brackets 28, the circular combs 29, and the like constituting the combing portion 15 are not connected using a dedicated coupling. The counterweight 30 plays a role of coupling. Therefore, it is not necessary to provide a dedicated coupling for connecting the shafts 24a so as to be integrally rotatable, and unlike the case where a dedicated coupling is provided, the counterweight 30 has a combing portion where the cylinder shaft 24 is not divided. 15 can have the same shape as the counterweight 30 used for the Fifteen. As a result, the combing head 11 in which the divided portion of the cylinder shaft 24 exists and the combing head 11 in which the divided portion of the cylinder shaft 24 does not have the same rotational balance of the combing portion 15 and vibration of the cylinder shaft 24 is large. Is prevented.

According to this embodiment, the following effects can be obtained.
(1) The comb has a plurality of combing heads 11, and the combing portions 15 of all the combing heads 11 are rotationally driven by a common cylinder shaft 24. The combing portion 15 includes a plurality of brackets 28 fixed to the cylinder shaft 24 so as to be integrally rotatable, and a circular comb 29 and a counterweight 30 fixed to the cylinder shaft 24 via the plurality of brackets 28. The cylinder shaft 24 is divided into a plurality of shafts 24 a in the longitudinal direction so that the divided portions are present at positions facing the combing portion 15, and the divided portions are disposed between the plurality of brackets 28. Therefore, even when the cylinder shaft 24 divided in the longitudinal direction is used, the cylinder shaft 24 is not lengthened, and variations in the rotation balance between the combing heads 11 can be prevented. In addition, since it is not necessary to provide a dedicated coupling at the division location, the number of parts can be reduced.

(2) The shaft 24 a is connected by a screw 34. Therefore, the connection strength is superior to the key connection, and the processing cost is lower than that of the spline connection.
(3) The shaft 24a is connected in a state where the opposed surfaces of the end portions are in contact with each other. Therefore, unlike the case where the opposing surfaces of the end portions are separated from each other, it is easy to suppress loosening of the screw 34 due to friction between the opposing surfaces of the end portions.

  (4) The shaft 24a includes an inlay portion 33 for centering at the connecting portion. Therefore, it becomes easier to connect the shafts 24a constituting the divided cylinder shafts 24 in a state in which their axes coincide with each other as compared with the case where the centering inlay portions 33 are not provided.

  (5) The cylinder shaft 24 is divided into three or more. Since the number of combing heads 11 of the comber is generally an even number, in the case of two divisions, in order to arrange the division part between the plurality of brackets 28 of the combing portion 15, each shaft 24a constituting the divided cylinder shaft 24 is provided. Are in different states. When the length of the shaft 24a is half the length of the cylinder shaft, the lathe that performs the machining is not special, but the length of the general-purpose lathe is still too long. However, dividing the shaft into three or more ensures that each shaft can be processed with a general lathe.

(6) Since the screw 34 connecting the shafts 24a is a taper screw, the length of the convex portion 33a constituting the spigot portion 33 can be formed shorter than the length of the male screw portion 34a.
The embodiment is not limited to the above, and may be embodied as follows, for example.

  The cylinder shaft 24 may be divided into a plurality of shafts 24a in the longitudinal direction so that the divided portion exists at a portion facing the combing portion 15, and the divided portion may be disposed between the plurality of brackets 28. The shafts 24a may not be connected by the screw 34. For example, as shown in FIG. 5, the convex part 33a and the hole 33b which comprise the inlay part 33 may fit, and you may connect in the state which the opposing surface of the edge part of the shaft 24a contact | abuts.

O When connecting shafts 24a in a state where relative rotation is suppressed, key connection or spline connection may be employed.
O The convex part 33a and the hole 33b which comprise the inlay part 33 may be truncated cone shape not only in column shape.

The screw 34 is not limited to a taper screw but may be a normal screw.
○ The shafts 24a may be connected in a state where the opposing surfaces of the end portions are separated from each other.
The counterweight 30 is not limited to the bracket 28, and the bracket 28 may be formed integrally with the counterweight 30.

The number of brackets 28 constituting one combing portion 15 may be three or more.
As a configuration for fixing the bracket 28 to the cylinder shaft 24, instead of using the bolt 31 and the nut 32, a screw hole is formed on one side across the slit 28b, and the bolt 31 is screwed into the screw hole. Also good.

The following technical idea (invention) can be understood from the embodiment.
(1) In the invention described in claim 4, the shafts are connected by screws using taper screws.

  DESCRIPTION OF SYMBOLS 11 ... Combing head, 15 ... Combing part, 24 ... Cylinder shaft, 24a ... Shaft, 28 ... Bracket, 29 ... Circular comb, 34 ... Screw, 30 ... Counterweight, 33 ... Inlay part

Claims (5)

In a comb having a plurality of combing heads and the combing portions of all the combing heads being rotated by a common cylinder shaft,
The combing portion includes a plurality of brackets fixed to the cylinder shaft so as to be integrally rotatable, and a circular comb and a counterweight fixed to the cylinder shaft via the plurality of brackets,
The cylinder shaft is divided into a plurality of shafts in the longitudinal direction so that the divided portion exists at a location facing the combing portion,
The comb is characterized in that the divided portion is disposed between the plurality of brackets.   The comb according to claim 1, wherein the plurality of shafts are connected by screws.   The comb according to claim 2, wherein the plurality of shafts are connected in a state in which opposed surfaces of end portions thereof are in contact with each other.   The combs according to any one of claims 1 to 3, wherein the plurality of shafts include an inlay portion for centering the connecting portion.   The comb according to any one of claims 1 to 4, wherein the cylinder shaft is divided into three or more.