JPH07189046A - Top-comb actuating apparatus of combing machine - Google Patents

Abstract

PURPOSE:To enable the change of the starting timing of combing corresponding to the spinning fibers even in the case in which the loci of the paths of a top comb both in a forward traveling and a backward traveling are the same to each other without producing troubles in piecing. CONSTITUTION:A nipper frame 3 is connected at its rear end to a nipper frame- driving arm 7 which moves integrally with a nipper shaft 6 and supported at its front part on a driven link 14 of a quadric link. A fixing lever 23 is tiltably supported near the central position of the nipper frame 3 and a top comb 25 is fixed at the first end of the fixing lever 23. The second end of a link 32 whose first end is rotatably supported on a supporting bracket 29 through a shaft 33 and the second end of the fixing lever 23 are rotatably connected through a shaft 34. The supporting bracket 29 is movably fixed on a bracket 28 which is fixed on a intermediate frame of the machine. A lifting range of the top comb 25 is changed corresponding to the position of the shaft 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator for a top comb of a combing machine.

[0002]

2. Description of the Related Art In a combing machine, a lap is grasped by a nipper knife and a cushion plate at a position where a nipper device is retracted, and a needle row (cylinder needle) planted in a combing cylinder combs the tip of the lap to wrap it. Remove short fibers (including impurities such as nep) from this to make fleece. This action is called cylinder combing. Next, the fleece is moved toward the detaching roller by advancing the nipper device. Corresponding to the advance of the fleece, the detaching roller is reversely rotated to retract the previously pulled out fleece (leading fleece), and the rear end of the fleece and the tip of the newly carded fleece (succeeding fleece) are connected. Overlap. This effect is called piecing. After that, the detaching roller is rotated in the forward direction again to pull out the succeeding fleece having its tip overlapped with the preceding fleece while being gripped by the feed roller, the auxiliary nipper and the cushion plate, and at this time, the top comb acts on the succeeding fleece. . The top comb blocks the passage of uncombed short fibers in the combing cylinder and combs the trailing edge of the trailing fleece. This action is called top comb combing (hereinafter, simply referred to as top combing). The combing machine repeats cylinder combing, piecing and top combing. In the combing machine, the quality of the product is greatly influenced by both the combing action and the quality of piecing.

Of the two combing effects, top combing is said to be more important. For example, the length of the wrap held by the nipper knife and the cushion plate and combed by the combing cylinder is 15 m.
If m, it will be around 18 mm after cylinder combing, although it depends on the type of raw cotton and the drop rate. The length of one nip fleece pulled out by the detaching roller under the action of the top comb is 80 to 90.
mm. That is, the ratio of the length of the fleece subjected to the combing action by the combing cylinder to the length of the fleece subject to the combing action by the top comb is 1: 4. Therefore, top combing becomes more important than cylinder combing.

When the top comb is applied to the succeeding fleece, it is important that the top comb penetrates the fleece at an optimum depth in accordance with the nipper motion. This is because when the top comb deeply penetrates at the position before the tip of the trailing fleece is gripped by the detaching roller, the top comb pushes the tip of the fleece downwards too much and the fleece bends and overlaps with the leading fleece. In some cases, piecing cannot be performed.

As conventional top comb actuating devices, the following three types have been roughly implemented or proposed. (1) A method in which the top comb is fixed to the nipper frame and moves back and forth together with the nipper frame.

(2) The top comb is attached to the nipper frame, and the back and forth movement is performed together with the nipper frame.
Up and down movement is done actively, apart from the nipper frame.

(3) A system in which the top comb is driven independently of the nipper frame.

[0008]

However, in the system of the above (1), the movement of the top comb is restricted by the movement of the nipper frame, and if the timing of the action of the top comb on the subsequent fleece is changed, It occurs when the combing is not sufficient.

In the system (3), the top comb is operated independently of the operation of the nipper frame, and the top comb can be operated in an optimum state corresponding to the movement of the nipper frame. However, in order to drive the top comb, a driving device independent of the nipper frame is required, which causes a problem that the entire device becomes large.

Further, in the method of (2), there is a method in which the locus of the top comb draws the same locus when moving forward and backward.
This technique requires that the combing start time be advanced in order to sufficiently perform the combing action of the top comb, and when the combing start time is advanced, the tip of the subsequent fleece that is combed by the combing cylinder is detached as described above. The top comb may act before it is gripped by the roller, and the tip of the subsequent fleece may be bent and piecing.

In order to improve the above problems, the method (2) is adopted, and the top comb is moved up and down so as to draw different trajectories during forward movement and backward movement so that the top comb acts on the subsequent fleece. There is disclosed a technique (Japanese Patent Laying-Open No. 2-26924). However, in this case, there is an advantage that the top comb can act in response to the speedup of the machine base, but since there is an intermediate shaft over all heads,
There is a problem that assembly of the machine base is troublesome.

The present invention has been made in view of the above problems, and an object thereof is to set the combing start timing corresponding to the spun fiber even if the trajectory of the top comb is the same during forward and backward movements. It is an object of the present invention to provide a top comb actuating device for a combing machine, which can be changed without affecting piecing and which does not require an intermediate shaft over all heads.

[0013]

In order to achieve the above-mentioned object, in the invention according to claim 1, a nipper shaft is disposed so as to be reciprocally rotatable behind a cylinder shaft and below a nipper frame. The rear part of the nipper frame is rotatably connected to the nipper frame drive arm that is fixed so that it can rotate integrally with the nipper frame, and the nipper frame is moved back and forth by the reciprocating rotation of the nipper frame. In the top comb actuator of the comber that moves the
A top comb mounting lever (hereinafter simply referred to as a mounting lever) is supported on the nipper frame so as to be vertically swingable at an intermediate position thereof, and the top comb is mounted to the first end of the mounting lever via a bracket. And a second end of a link, the first end of which is rotatably supported by the intermediate frame of the machine base at a position lower than the mounting lever, are rotatably connected to each other, and the first end of the link is connected. The support position of the part can be moved and adjusted.

Further, in the invention according to claim 2, when the nipper frame is in the vicinity of the most advanced position, the second end of the link is positioned substantially near the apex of the arcuate locus, In addition, the tangent line at the apex of the locus extends substantially horizontally.

Further, in the invention according to claim 3, a mounting lever is supported on the nipper frame so as to be vertically swingable at an intermediate position thereof, and a top comb is provided at a first end of the mounting lever via a bracket. And a second end portion of a first link rotatably connected at a first end portion to a top comb drive lever fixed to the nipper shaft so as to be integrally rotatable, and rearward from a mounting lever supporting position of the nipper frame. And a second end of a second link rotatably supporting the first end of which is rotatably connected by a support shaft, and the first end of the mounting lever is rotatably connected to the second end of the attachment lever. The second end of the connected third link is rotatably supported by the support shaft, and the support position of the first end of the first link is movable.

Further, in the invention according to claim 4, a four-bar link mechanism having fixed fulcrums on both upper and lower sides sandwiching the nipper frame is arranged, and the upper fixed fulcrum is arranged rearward of the lower fixed fulcrum. At the same time, the front part of the nipper frame is rotatably supported by a driven link whose both ends in the four-bar linkage are connected to movable fulcrums.

[0017]

According to the first aspect of the invention, the nipper frame moves back and forth with the reciprocating rotation of the nipper shaft, and the mounting lever also moves back and forth together with the nipper frame. The second end of the link moves integrally with the second end of the attachment lever as the attachment lever moves back and forth. Since the first end of the link is rotatably supported at a predetermined position, the link rotates so that the second end of the link draws an upwardly convex arc locus. Then, the mounting lever is swung in the vertical direction as the link reciprocates. As a result, the tip of the top comb moves forward,
Draw the same trajectory when retreating.

When the position of the first end of the link is changed, the trajectory drawn by the second end of the link is changed, the vertical movement range of the second end of the mounting lever is changed, and the tip of the top comb is changed. The elevation range of changes. Therefore, the locus of the tip of the top comb that accompanies the forward and backward movement of the nipper frame is changed, and the start timing and the action time of the top comb are changed.

According to the second aspect of the invention, when the nipper frame is in the vicinity of the most advanced position, the second link of the link is
The end is located near the apex of the arcuate locus. Since the arranging position of the link is set so that the tangent line at the apex of the arcuate locus extends substantially horizontally, the second end of the link moves very vertically in the vicinity of the most advanced position of the nipper frame. Few. Therefore, when the nipper frame moves in the vicinity of the most advanced position, the top comb does not move much in the vertical direction, the top comb moves almost horizontally, and in other cases, a gentle upward curve is drawn.

According to the third aspect of the present invention, the second end of the mounting lever is swung up and down as the nipper frame moves back and forth by the cooperative action of the first to third links. When the position of the first end of the first link is changed, the swing range of the second end of the mounting lever changes as the nipper frame moves back and forth. Then, the locus of the tip of the top comb accompanying the forward and backward movement of the nipper frame is changed, and the start timing and the action time of the top comb are changed.

According to the fourth aspect of the invention, the rear part of the nipper frame draws an upwardly convex arc locus as the nipper shaft reciprocally rotates. The swing lever that pivotally supports the first end of the follower link that supports the front part of the nipper frame draws a downwardly convex arc locus around the upper fixed rotation fulcrum of the nipper frame, and the second end is the axis. The swinging lever that supports draws a circular arc locus that is upwardly convex about the fixed rotation fulcrum on the lower side of the nipper frame 3. When the nipper shaft swings within a predetermined range, the cushion plate supported by the nipper frame draws a downwardly convex arc when its tip moves forward toward the detaching roller after cylinder combing is completed.

[0022]

【Example】

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, a pair of upper and lower detaching rollers 2A and 2B are disposed near the front side (left side of FIGS. 1 and 2) of the combing cylinder 1. A nipper frame 3 is provided above the combing cylinder 1 so as to be capable of moving forward and backward, and a cushion plate 4 is fixed to the tip end portion thereof. On the cushion plate 4, there is arranged a feed roller 5 having a known structure which intermittently rotates to feed a wrap (not shown) required for one combing.

A nipper shaft 6 is supported by a machine frame (not shown) at the rear of the combing cylinder 1 so as to be reciprocally rotatable. A first end portion of a nipper frame drive arm 7 is integrally rotatably fixed to the nipper shaft 6, and a rear end of the nipper frame 3 is rotatable on a second end portion of the drive arm 7 via a support shaft 8. Supported by.

Support shafts 9 and 10 as fixed support points of the four-bar linkage are arranged in parallel with the support shaft 8 on both upper and lower sides of the machine frame with the nipper frame 3 interposed therebetween. The lower support shaft 10 is arranged near the upper rear side of the cylinder shaft 11, and the upper support shaft 9 is supported behind the lower support shaft 10 and when the nipper frame 3 is arranged at the most advanced position. Axis 8
It is arranged further forward. The first ends of swing levers 12 and 13 are rotatably supported on the support shafts 9 and 10, respectively. Both ends of the driven link 14 are rotatably supported on the second ends of the swing levers 12 and 13 via support shafts 15 and 16 as movable support points. Both swing levers 12,
13, the support shafts 9, 10, 15, 16 and the driven link 14 constitute a four-bar linkage mechanism with the support shafts 9, 10 as fixed fulcrums.

A boss portion 14a is formed on the upper side in the center of the driven link 14, and a hole 14b formed in the boss portion 14a.
The nipper frame 3 is rotatably supported with respect to the driven link 14 via a support shaft 17 fitted in a hole formed in the tip portion of the nipper frame 3.

The two rocking levers 12 and 13 are set such that their fixed fulcrums and movable fulcrums have the same distance. Swing lever 1
The second end portion 2 is formed in such a length that a downwardly convex arcuate locus is drawn laterally of the nipper frame 3. The swing lever 13 is formed such that the second end thereof has a length that draws an upwardly convex arcuate locus laterally of the cushion plate 4.

A nipper arm pin 18 is provided substantially in the center of the nipper frame 3, and the nipper arm pin 1 is provided.
A nipper arm 20 having a nipper knife 19 fixed to the tip thereof is rotatably supported by 8. The nipper knife 19 is adapted to be opened and closed at a predetermined timing by a forward and backward swinging motion of the nipper frame 3 by a known drive mechanism (not shown).

An auxiliary nipper 21 is rotatably supported on the nipper arm pin 18. Auxiliary nipper 2
Reference numeral 1 is for pressing and gripping the wrap against the cushion plate 4 when the rear end of the combed wrap is combed by a top comb, which will be described later, and the known drive mechanism swings the nipper frame 3 at a predetermined timing. It is designed to open and close.

A support portion 3a extending upward is provided at the tip of the nipper frame 3 so as to project therefrom, and a mounting lever 23 is rotatably supported on the support portion 3a via a support shaft 22 at a substantially central portion thereof. The top comb bracket 24 is fixed to the first end of the mounting lever 23, and the top comb 2
The reference numeral 5 is fitted in a groove formed in the top comb bracket 24 so as to be movable in the vertical direction, and is held at a predetermined position by a holding member (not shown). An adjusting bolt 26 is screwed on the top of the top comb 25 with its tip abutting the top surface of the top comb bracket 24. A lock nut 27 is screwed between the head of the adjusting bolt 26 and the upper surface of the top comb 25, and the adjusting bolt 2 is loosened.
By rotating 6 the top comb 25 can be vertically adjusted relative to the top comb bracket 24. That is, the needle 25 fixed to the tip of the top comb 25 is operated by operating the adjusting bolt 26.
The penetration depth of the a into the fleece during top combing can be adjusted.

A bracket 28 is fixed to an intermediate frame (not shown) of the machine base below the nipper frame 3 at a position corresponding to an intermediate position between the swing lever 13 and the nipper frame drive arm 7. A support bracket 29 is fixed to the bracket 28 so that its position can be adjusted in the front-rear direction. That is, a long hole 30 extending in the front-rear direction is formed in the support bracket 29, and a pair of bolts 31 screwed into the screw holes (not shown) formed in the bracket 28 through the long hole 30 to the front-rear direction. The position can be adjusted.

A link 32 is attached to the tip of the support bracket 29.
The first end of the link 32 is rotatably supported by the support shaft 33, and the second end of the link 32 is rotatably connected to the second end of the attachment lever 23 via the support shaft 34. Both support shafts 33,
The position of 34 is arranged so that the link 32 is in a substantially vertical state when the nipper frame 3 moves in the vicinity of the most advanced position. Further, even when the support bracket 29 is fixed to the rearmost side, the position of the support shaft 33 is located on the front side of the most retracted position of the support shaft 34.

Next, the operation of the device configured as described above will be described. Since the optimal conditions for top combing may vary depending on the spun fiber, the comber machine may be operated in advance as a test, and the needle 25a and the spindle 3 corresponding to the spun fiber may be used.
The optimum position of 3 is obtained. Then, before operating the combing machine, the position of the needle 25a and the position of the support shaft 33 are adjusted so that the action of the top combing is optimized for the spun fiber.

To adjust the position of the needle 25a, the adjustment bolt 26 is rotated with the lock nut 27 loosened, and the amount of protrusion of the adjustment bolt 26 from the top comb 25 is set to a predetermined value, and then the lock nut 27 is tightened. It's done. To adjust the position of the support shaft 33, that is, the fixing position of the support bracket 29, the support bracket 29 is moved to a predetermined position while the bolt 31 is loosened, and the bolt 31 is tightened.

FIG. 1 shows the state in which the nipper frame 3 is in the most advanced position, and FIG. 2 shows the state in which the nipper frame 3 is in the most retracted position. When the combing machine is operated, the nipper frame drive arm 7 rotates about the nipper shaft 6 as the nipper shaft 6 reciprocally rotates, and the center of the support shaft 8 supported at the tip of the nipper frame 6 is shown in FIG. It moves between the upwardly convex arcuate loci a1 and a2. When the center of the support shaft 8 moves between the arcuate loci a1 and a2, the tip of the swing lever 12 of the four-bar linkage having the support shaft 9 as a fixed fulcrum, that is, the center of the support shaft 15 is shown in FIG. Downwardly convex arc b1
Move between b2. Further, the tip of the swing lever 13 having the support shaft 10 as a fixed support, that is, the center of the support shaft 16, moves between the upwardly convex arcs c1 and c2. Then, the center of the support shaft 17 provided on the driven link 14 supported by the tips of the swing levers 12 and 13 moves substantially horizontally between d1 and d2.

Further, the tip portion (hereinafter, also referred to as nipper tip portion) 4a of the cushion plate 4 fixed to the nipper frame 3 moves along the smooth complex curve accordingly. In FIG. 3, L is the retracted end of the nipper tip 4a, M is the position corresponding to the opening / closing point of the nipper knife 19,
N is the forward end of the nipper tip 4a. When the nipper tip 4a reaches M while the nipper frame 3 is retracting, the nipper knife 19 is closed. Then, while the nipper frame 3 retracts from that position, the nipper knife 1
The wrap (not shown) held by the tip portion 4a of the cushion plate 4 and 9 is subjected to a combing action by a cylinder needle (not shown) of the combing cylinder 1. The center of the support shaft 17 draws a convex arcuate locus between d3 and d1, and the nipper tip 4a approaches the cylinder circle between ML and forms an upward convex arc along the circle. Move as you draw. The cylinder circle is a circle drawn by the tip of the cylinder needle.

After the nipper frame 3 reaches the backward end,
When the forward movement is restarted and the center of the support shaft 17 moves from d1 to d3, the nipper tip portion 4a advances from the position of the backward end L to M. At this time as well, the locus of the nipper tip portion 4a comes close to the cylinder circle and becomes an upwardly convex arcuate locus along the circle, as described above. Cylinder combing is also performed when the nipper tip portion 4a moves between the LM. That is, the nipper tip portion 4a moves so as to draw an upward convex arcuate locus along the vicinity of the cylinder circle when retracting toward the retracting end and when advancing from the retracting end. Therefore, since the nipper tip portion 4a moves at a constant distance from the cylinder circle while the lap receives the combing action, effective combing can be performed.

When the center of the support shaft 17 moves between d3 and d2, the locus has a downwardly convex arcuate shape, so the nipper tip 4a has a downwardly convex arcuate locus from M to N. Move as you draw. At the most advanced position of the nipper tip portion 4a, a position convenient for piecing, that is, the nipper tip portion 4a is a pair of upper and lower detaching rollers 2A, 2B.
It is arranged at the same height as the nip point of the. Therefore, when joining the leading fleece and the trailing fleece, the leading end of the trailing fleece is not bent, and good piecing is performed.

While the support shaft 8 moves between the arcs a1 and a2, the center of the nipper arm pin 18 is e in FIG.
1 to e2, the center of the support shaft 22 moves between f1 to f2, and the center of the support shaft 34 moves between arcs g1 to g2. The needle 25a of the top comb 25 is h1.
Move between ~ h2. That is, the needle 25a moves along the same trajectory when moving forward and backward. The arrangement relationship between the support shaft 33 and the support shaft 34 is set so that the link 32 is in a substantially vertical state when the nipper frame 3 moves in the vicinity of the most advanced position. When moving in the vicinity of the most advanced position, the vicinity of the apex of the arcs g1 to g2 is moved substantially horizontally.

The mounting lever 23 moves back and forth integrally with the nipper frame 3 and also swings around the support shaft 22 by the movement of the support shaft 34. The support shaft 22 moves substantially horizontally between f1 and f2. Therefore, when the support shaft 34 moves substantially horizontally, that is, when the nipper frame 3 moves near the most advanced position, the needle 25a also moves substantially horizontally,
At other points, it gently moves along a curve extending upward and rearward.

The fleece extending from the nipper frame 3 to the detaching rollers 2A, 2B is shown in FIGS. 3 and 4 with the upper surface of the nipper tip 4a and the detaching rollers 2A, 2B.
Represented as a straight line tangent to B (nipper tip 4a
Is shown only when is at the most forward position). Therefore, the needle 25
When the tip of a is located below the straight line, the fleece F is subjected to the top combing action by the needle 25a.

The movement path of the cushion plate 4 is determined by the support shaft 3
Even if the position of 3 is changed, it does not change, but the top comb 25
That is, the movement trajectory of the tip of the needle 25a changes by changing the position of the support shaft 33. In FIG. 4, the needle 2 when the support shaft 33 is arranged at the position shown in FIGS.
The position of 5a is shown by a solid line corresponding to the position of the nipper tip 4a, and the position of the needle 25a when the position of the support shaft 33 is moved to the rear side of the machine base is shown by a chain line. There is.

As the position of the support shaft 33 is moved to the rear side of the machine base, the height of the position of the support shaft 34 when the nipper frame 3 is located at the rearmost retracted position becomes higher. On the other hand, the position of the support shaft 34 when the cushion plate 4 moves near the most advanced position is almost the same. As a result, when the position of the support shaft 33 is moved to the rear side of the machine base, as shown by the chain line in FIG.
The locus of movement of the needle 25a is in a state of being positioned lower than that shown by the solid line. Therefore, the needle 25a acts on the fleece F from an early stage and for a long period of time to perform a top combing action. That is, by moving the support position of the support shaft 33, the start time and period of top combing can be changed, and top combing can be performed under conditions suitable for spun fibers.

Further, in this embodiment, the support bracket 29 is mounted on the bracket 28 through the bolts 31 penetrating the elongated holes 30.
Since it is clamped and fixed to the support bracket 29, the fixing position of the support bracket 29, that is, the position of the support shaft 33 can be continuously changed without any step, and the position of the support shaft 33 is set to a position more suitable for the spun fiber. it can.

Since both the nipper frame 3 and the top comb 25 are driven only by the link mechanism, they are suitable for high speed operation as compared with the case where the cam mechanism is used. (Second Embodiment) Next, a second embodiment will be described with reference to FIGS. In this embodiment, the mechanism for swinging the mounting lever 23 up and down is different from that in the first embodiment, and other mechanisms for driving the nipper frame 3, the nipper arm 20, etc. are basically the same. The same parts as those of the device of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIGS. 5 and 6, the nipper frame drive arm 7 has a support portion 7a bulging rearward of the position where the support shaft 8 is disposed. In the example, three holes 35a to 35c are formed.
The holes 35a to 35c are inserted from the center thereof to the nipper shaft 6
Are formed at different positions to the center of each. In this embodiment, the distance between the nipper shaft 6 and the hole 35a is set to be the shortest, the distance between the nipper shaft 6 and the hole 35c is set to be the longest, and the distances are set to differ by 5 mm, for example. Also, nipper shaft 6
The distance between the hole 35b and the hole 35b is set to be the same as the distance between the nipper shaft 6 and the support shaft 8. In this embodiment, the nipper frame drive arm 7 also serves as the top comb drive lever.

A first end of a first link 37 is rotatably supported on the nipper shaft 6 via a support shaft 36 fitted in the hole 35b. The first link 37 is arranged so as to extend obliquely upward and upward, and its second end is rotatably connected to the second end of the second link 39 via a support shaft 38. The second link 39 is arranged so as to extend obliquely downward and downward, and its first end is rotatably supported by the nipper arm pin 18. The nipper arm pin 18 is the first
It is formed longer than the device of the embodiment, and the second link 39 is supported by the extending portion thereof. Further, the second end of the third link 40 is rotatably connected to the support shaft 38, and the third link 40
The first end of is attached to the second end of the attachment lever 23 via a support shaft 34 so as to be rotatable. The second link 39 and the third link 40 are formed to have the same length.

Next, the operation of the device configured as described above will be described. When the nipper frame drive arm 7 is rotated together with the nipper shaft 6, the center of the support shaft 8 supported by the tip end of the nipper frame drive arm 7 moves between upwardly convex arc-shaped loci a1 and a2 as shown in FIG. The center of the support shaft 36 also moves between the upwardly convex arcuate loci i1 to i2. Further, the centers of the support shafts 15, 16, 17 of the four-bar linkage supporting the front part of the nipper frame 3 are centered between b1 and b2 and between c1 and c2.
2 and between d1 and d2 are moved in the same manner as in the above embodiment. Then, the tip portion 4a of the cushion plate 4 fixed to the nipper frame 3 moves along the smooth complex curve accordingly. In FIG. 7 as in FIG. 3, L is the retracted end of the nipper tip 4a, M is the position corresponding to the opening / closing point of the nipper knife 19, and N is the advance end of the nipper tip 4a.

While the support shaft 8 moves between the arcs a1 and a2, the center of the nipper arm pin 18 is e1 in FIG.
To e2, the center of the support shaft 22 moves between f1 and f2, the center of the support shaft 38 moves between arcs j1 and j2, and the center of the support shaft 34 moves between arcs k1 and k2. . And
The needle 25a of the top comb 25 moves between h1 and h2. That is, the needle 25a moves on the same locus corresponding to the curve extending obliquely upward from the most advanced position,
It moves both forward and backward.

By changing the mounting position of the support shaft 36 for supporting the first link 37 on the nipper frame drive arm 7, the movement loci of the links 37, 39, 40 are changed,
The movement locus of the needle 25a also changes. Support shaft 36 with hole 3
Trajectories in the case of being supported by 5a, the hole 35b, and the hole 35c are shown by A, B, and C in FIG. 8, respectively. The line P indicates the needle 25 when the cushion plate 4 is advanced most.
The position of a is shown. Set the position of the support shaft 36 from the holes 35a to 35
By sequentially changing to b, 35c, the movement locus changes to A, B, C. The greater the distance between the center of the nipper shaft 6 and the center of the support shaft 36, the greater the degree of rise of the movement locus of the needle 25a at the retracted position. That is, if the needles 25 are attached in the same state, the tip of the needle 25a acts on the fleece F from the nipper frame 3 to the detaching rollers 2A, 2B in the order of A, B, C, and the action period. Becomes longer. Therefore, by changing the support position of the support shaft 36, the start time and period of top combing can be changed, and top combing can be performed under conditions suitable for spun fibers.

Further, in this embodiment, since the nipper frame drive arm 7 also serves as the top comb drive lever, the assembling becomes easier as compared with the case where the both are separated. Also, the device becomes compact.

The present invention may be embodied as follows. (1) In the first embodiment, as a configuration for supporting the support shaft 33 in a positionally adjustable manner, the support bracket 29 is movably attached to the intermediate frame of the machine base via a ball screw mechanism,
It can be moved by rotating the ball screw. With this configuration, the position can be easily adjusted by rotating the ball screw.

(2) In the second embodiment, instead of the holes 35a to 35c for supporting the support shaft 36, a long hole is formed in the nipper frame drive arm 7 and the position can be adjusted along the long hole. The support shaft 36 may be supported by the provided bearing. In this case, the position of the support shaft 36 can be adjusted steplessly, and the action start timing and action period of the top combing more suitable for spun fibers can be set.

(3) In the second embodiment, the top comb drive lever may be provided separately from the nipper frame drive arm 7, and the top comb drive lever may be provided with a plurality of holes into which the spindle 36 is fitted. Further, a plurality of top comb drive levers having different lengths are prepared, and the first end of the lever is integrally rotatably fixed to the nipper shaft 6, and the second end of the lever has the first end of the first link 37. May be connected to.
In this case, the top comb drive lever and the first link 37
It is possible to set the first end portion of the first coaxial cable and the support shaft 8 coaxially with each other, and to connect the first link 37 to the first comb 37 as compared with the case where the top comb drive lever and the nipper frame drive arm 7 are used in combination. Increased freedom of position.

(4) The supporting position of the mounting lever 23 with respect to the nipper frame 3 is not necessarily near the center thereof, but may be a position deviated in the front-rear direction. Further, both swing levers 12 and 13 forming the four-bar link may have different lengths, or the length of the driven link 14 may be changed. Further, the positions of the support shafts 9 and 10 serving as fixed support points may be changed, or the swing support point on the driven link 14, that is, the support shaft 1 may be changed.
The position of 7 may be changed.

(5) Instead of the structure in which the front part of the nipper frame 3 is supported by a follower link of a four-bar link having a rocking lever between the nipper frame 3 and the nipper frame 3, the nipper frame 3 is placed below the nipper shaft 6 to support it. May be supported by a four-bar linkage having a drive shaft.

(6) It may be applied to a comber machine which is not equipped with the auxiliary nippers 21.

[0058]

As described in detail above, according to the present invention, by changing the supporting position of the link, the locus of movement of the needle of the top comb can be easily changed, and the action of the top comb corresponding to the spun fiber can be changed. The timing and duration of action can be changed. Further, since the top comb is interlocked with the nipper shaft, there is no need to provide a separate drive device for driving the top comb, and the device becomes compact. Further, since there is no intermediate shaft over all the heads, the work is easy at the time of assembly.

In addition to the above effects, the top comb moves substantially horizontally when the nipper frame moves in the vicinity of the most advanced position, so that the top combing is efficiently performed.

In addition to the above effects, in the invention according to claim 4, the cylinder combing is efficiently performed, and at the time of joining the leading fleece and the trailing fleece, the leading end portion of the trailing fleece is not bent and good piecing is achieved. Is done.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a nipper frame of a first embodiment is arranged at a most advanced position.

FIG. 2 is a side view showing a state in which the nipper frame is also arranged at the rearmost retracted position.

FIG. 3 is a schematic diagram showing swing loci of each support shaft, a nipper tip portion, a needle, and the like.

FIG. 4 is a schematic diagram showing a swing locus of a nipper tip portion, a needle and the like when a support position of a link is changed.

FIG. 5 is a side view showing a state in which the nipper frame of the second embodiment is arranged at the most advanced position.

FIG. 6 is a side view showing a state in which the nipper frame is also arranged at the rearmost retracted position.

FIG. 7 is a schematic view showing a swing locus of a fulcrum of each link, a nipper tip portion, a needle, and the like.

FIG. 8 is a schematic diagram showing a swing locus of a nipper tip portion, a needle and the like when a support position of a link is changed.

[Explanation of symbols]

3 ... Nipper frame, 6 ... Nipper shaft, 7 ... Nipper frame drive arm, 8, 22, 33, 34, 36,
38 ... Spindle, 18 ... Nipper arm pin, 11 ... Cylinder shaft, 23 ... Mounting lever, 25 ... Top comb, 25a ... Needle, 29 ... Support bracket, 32 ...
Link, 37 ... First link, 39 ... Second link, 40 ...
Third link.

Claims (4)

[Claims] 1. A rear part of a nipper frame is rotated by a nipper frame drive arm, which is arranged rearwardly of a cylinder shaft and below the nipper frame so as to be capable of reciprocating rotation, and is fixed to the nipper shaft so as to be integrally rotatable. A top comb actuating device for a combing machine, in which the top comb is moved up and down by the forward and backward movements of the nipper frame by connecting and reciprocally rotating the nipper shaft. The mounting lever is swingably supported at its intermediate position, and the top comb is mounted on the first end of the top comb mounting lever via a bracket. The second end of the top comb mounting lever and the top comb mounting lever are mounted. At the lower position, the first end is on the middle frame of the machine base A top comb actuating device for a combing machine, wherein a second end of a link that rotatably supports is rotatably connected, and a support position of the first end of the link is movable and adjustable. . 2. When the nipper frame is in the vicinity of the most advanced position, the second end of the link is located substantially near the apex of the arcuate locus, and the tangent line at the apex of the locus is approximately. The top comb actuation device for a combing machine according to claim 1, wherein the top comb actuating device extends horizontally. 3. A nipper frame is rotatably and reciprocally arranged behind a cylinder shaft and below the nipper frame, and a rear part of the nipper frame is rotated by a nipper frame drive arm fixed to the nipper shaft so as to be integrally rotatable. A top comb actuating device for a combing machine, in which the top comb is moved up and down by the forward and backward movements of the nipper frame by connecting and reciprocally rotating the nipper shaft. A top comb drive in which a mounting lever is swingably supported at an intermediate position thereof, a top comb is mounted to a first end portion of the top comb mounting lever via a bracket, and is integrally rotatably fixed to the nipper shaft. First link in which the first end is rotatably connected to the lever A second end portion and a second end portion of a second link that rotatably supports the first end portion rearward of the top comb attachment lever supporting position of the nipper frame, rotatably connected by a support shaft; A second end of a third link having a first end rotatably connected to a second end of the top comb attachment lever is rotatably supported by the support shaft, and the first end of the first link is rotatably supported. A top comb actuating device for a combing machine, characterized in that the supporting position of the section can be moved and adjusted. 4. A four-joint link mechanism having fixed fulcrums on both upper and lower sides of the nipper frame is disposed, and an upper fixed fulcrum is arranged rearward of a lower fixed fulcrum, and The top comb of the combing machine according to any one of claims 1 to 3, wherein a front portion of the nipper frame is rotatably supported by a driven link having both ends connected to a movable fulcrum. Actuator.