JPH05339822A - Combing machine - Google Patents

Abstract

PURPOSE: To provide a combing machine so working as to subject the axial orientation of a spring foot to shift control so as to always represent a specified function relative to the instantaneous orientation of an undernipper frame being in reciprocating motion to avoid shaft abrasion and properly open/close a nipper unit. CONSTITUTION: This combing machine works as follows: an overnipper arm 10 turnably linked to an undernipper frame 6 being in reciprocating motion by the swing rotating action of a drive shaft 4 is swung about an axis A and pivoted on a spring foot 12 subject to opening/closing motion between an overnipper frame 9 and the undernipper frame 6, and the axis A is made shiftable via an eccentric body 17 by the aid of an electric motor 16; the position of a circular comb shaft 1 or the drive shaft 4 is sensed by a sensor 23, and by a control unit 22 which received the resultant signal from the sensor 23, the electric motor 16 is periodically subjected to actuation control with predetermined timing so that the instantaneous orientation of the axis A always represent a specified functional relationship with that of the undernipper frame 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a combing machine,
An oscillating nipper unit is provided, and the nipper unit has an undamper frame and an overnipper arm pivotally coupled to the undamper frame, and each of the overnipper arms has one The present invention relates to a type that is pivotally attached to a spring leg that can be pivoted about an axis.

[0002]

2. Description of the Related Art In a known combing machine of this type, the axis is formed as the axis of an eccentric body, and the eccentric body is mounted on a shaft supported by a frame. Since this shaft is power-coupled to the nipper shaft of the combing machine, the shaft is reciprocally rotated at the same time as the reciprocating motion of the undamper frame while the combing machine is operating. The end position of the reciprocating undampper frame is generally adjustable, which allows various withdrawal distances to be adjusted (the withdrawal distance is the clamping of the undamper plate and the withdrawal roller pair at the front end position of the undampper frame. The distance between the line).
In this case, the eccentric body forming the pivot axis of the spring leg is reciprocally rotated so that the spring leg is adjusted in accordance with various adjusted withdrawal distances. Are adjusted to be held in the open state with substantially equal opening widths at all the front end positions, and are kept in the closed state with substantially equal force at all the rear end positions. However, such an advantage is accompanied by a drawback that unavoidable wear of the shaft, which is provided with the eccentric body and is continuously reciprocally rotated during operation, occurs.

[0003]

SUMMARY OF THE INVENTION The object of the invention is to improve a combing machine of the type mentioned at the beginning such that various withdrawal distances can be adjusted without continuous displacement of the spring leg pivot axis during operation. Adjustable or if such displacement is tolerated, a more advantageous, precise and precise control of the opening and closing movements of the nipper unit than in known combing machines is obtained. It is to provide such a combing machine.

[0004]

In order to solve this problem, in the structure of the present invention, a controllable unique motor for displacing the axis is assigned to the axis.

[0005]

According to the invention, the disadvantages mentioned above are avoided,
Shaft wear is avoided.

The combing machine may have a control device for connecting the motor in adjusting the end position of the nipper unit, whereby the pivot axis of the spring leg is adjusted to the newly adjusted end position. Be displaced. The motor may be stopped during the operation of the combing machine and the position of the pivot axis of the spring leg may remain unchanged.

However, the combing machine may have a control device for operating the motor so that the turning axis of the spring leg is periodically displaced at a predetermined timing with the reciprocating movement of the nipper unit during operation. In this case, the instantaneous position of the axis is always a defined function of the instantaneous position of the nipper unit. This defined function is such that the spring legs hold the nipper unit fully open in the front end position, gently closing the nipper unit at the desired time during the return movement to the rear end position, It is then expedient to set this nipper unit in a closed state with a substantially constant force. The intermittent rotary movement of the supply cylinders mounted on the undamper frame for supplying the wraps to be combed is effected in a known manner by a swiveling movement of the overnipper arm with respect to the undamper frame (for example a ratchet wheel, a freewheel or In combing machines which are drawn out (via a plate), the free settability of the function is particularly important. In such a combing machine, the function defines when the lap is to be fed, the feed rate and the feed rate.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

The combing head, a part of which is shown in FIGS. 1, 2, 3 and 4, is a circular comb shaft 1 that rotates continuously.
It has two drawing rollers 2 and 3, and a nipper shaft 4 which can be oscillated and rotated. All these components are mounted on a machine frame (not shown). The nipper shaft 4 supports a crank arm 5, and the rear end of the undamper frame 6 is pivotally attached to this crank arm. The front end of the undamper frame 6 is pivotally attached to the front support 7, which supports the circular comb shaft 1.
It is rotatably supported about the axis of the. The undamper frame 6 carries an undampper plate 8, which cooperates with an overnipper plate 9. The over-nipper plate 9 is supported by an over-nipper arm 10, and the over-nipper arm is pivotally connected to an undamper frame 6 about a shaft 11. Further, each of the over-nipper arms 10 is pivotally attached to a spring leg 12 which is pivotable about an axis A.

By the swinging and rotating operation of the nipper shaft 4, the undamper frame 6 is moved to the front end position shown in FIG.
It is reciprocated between a rear end position. In FIG. 2, the front end position is shown by a thick line, and the rear end position is shown by a thin line. In the rear end position,
Spring leg 12 holds the nipper unit closed.
That is, this spring leg presses the lower edge of the over nipper plate 9 against the front edge of the undipper plate 8 via the over nipper arm 10. Between these edges, the fiber tufts are clamped from the wrap (not shown) that one wishes to comb. The fiber tuft is carded by a circular comb segment 13. This circular comb segment is a circular comb drum 14 supported by a circular comb shaft 1.
It is fixed to.

At the front end positions of the nipper units 6, 8, 9 and 10, the nipper units are held in an open state by the spring legs 12. That is, the spring leg 12 is connected to the over nipper plate 9 via the over nipper arm 10.
Is pulled upward in a direction away from the undampipper plate 8. The carded tufts then pass through pulling rollers 2 and 3 and are pulled out of the wrap located on the undamper plate 8.

The supply cylinder 15 (FIG. 1) supported by the undamper frame 6 is provided with a wrap to be combed.
It works to feed and convey one piece each time in the opened nipper unit. The rotary movement of the supply cylinder 15 relates to the undamper frame 6 in a general manner when the nipper units 6, 8, 9, 10 are opened and / or closed, that is, when the undamper frame 6 is moved forward and / or backward. It is produced by the pivoting movement of the overnipper arm 10. Over nipper arm 10
The swiveling movement of is transmitted to the supply cylinder 15 via, for example, a ratchet wheel, a freewheel or a template (not shown).

The turning axis A of the spring leg 12 has a controllable and unique motor 16 for displacing the turning axis A,
In particular, an electric motor is assigned. In the configurations shown in FIGS. 1 and 2, the turning axis A is the axis of the eccentric body 17.
This eccentric is mounted on a shaft 18 supported on the machine frame. The shaft is adapted to be rotated by a motor 16, which causes the axis A to be displaced. The spring leg 12 is rotatably supported by the eccentric body 17.

In the configuration shown in FIG. 4, the pivot axis A of the spring leg 12 is the axis of the shaft 19. The shaft is supported by a lever arm 20, which is mounted on a shaft 21 supported on the machine frame. The shaft 21 is adapted to be rotated by the motor 16, whereby the axis A is displaced. The spring leg 12 is pivotally supported on the shaft 19.

The movement of the motor 16 is especially controlled by the electronic control unit 22.
Connected and disconnected, ie controlled. The electronic control unit 22 has various functions as described below.

Generally, the end position of the reciprocating undamper frame 6 is adjustable, for example, between the position shown by the solid line in FIG. 2 and the position shown by the broken line. The electronic control unit 22 serves to connect the motor 16 during such adjustments and thereby bring the eccentric 17 (FIGS. 1 and 2) or the shaft 19 (FIG. 4) into the position also shown in broken lines. .. As a result, the position of the swivel axis A is adjusted to the newly adjusted end position of the undamper frame 6, in which case the nipper unit is always opened at the front end position with approximately the same opening width. After that, the motor 16 is stopped again while the combing machine is in operation.

The electronic control unit 22 can also operate the motor 16 such that it displaces the shaft 19, as indicated by the dash-dotted line in FIG. 4, and thus the axis A to the maintenance position. In the maintenance position, the nipper unit is excessively opened. The overnipper plate 9 is in this case kept away from the undampening plate 8 until the supply cylinder 15 can be taken out forward and cleaned, repaired, fitted with a new wrap, etc.

The electronic control unit 22 may be configured to continuously operate the motor 16 even while the combing machine is operating. In this case, the turning axis A of the spring leg 12 is displaced at a predetermined timing together with the reciprocating motion of the undamper frame 6, and in this case, the instantaneous position of the circling axis A is always selected as appropriate from the instantaneous position of the undamper frame 6. It becomes the specified function. The electronic control unit 22 is supplied with a signal from an incremental oscillator 23 (FIG. 1) for this purpose, which incremental oscillator is used for the rotation angle of the circular comb shaft 1 or the nipper shaft 4. To detect. The instantaneous position of the swivel axis A, together with the instantaneous position of the undamper frame 6, also includes the nipper units 6, 8,
It always defines the opening width of 9, 10, ie the distance of the overnipper plate 9 from the undamper plate 8 and the clamping force (formed by the tightening of the spring legs 12) after closing the nipper unit. Front end position V
The opening width O of the nipper unit related to the position of the nipper unit between E and the rear end position HE can pass as shown in FIG. The function defining the instantaneous position of the swivel axis A is such that the opening width O has a constant value in the range of the front end position VE, that is to say between this end position VE and the point T at which the withdrawal takes place. Is set to. When the nipper unit moves toward the rear end position HE, the closing operation starts at the point S. At the point Z, the nipper unit is closed, after which the clamping force gently increases and becomes constant between the point K and the rear end position HE during combing.

When the undamper frame 6 moves from the rear end position HE to the front end position VE, as described above, the swivel movement of the overnipper arm 10 with respect to the undamper frame 6, for example, the opening of the overnipper arm. The movement may cause a rotational movement of the supply cylinder 15. Then, between the point Z and the point S, the feeding movement or supply of the lap to be combed is performed. Therefore, the lap feed ends before the withdrawal starts at point T, which has the advantage that the withdrawal can be done from the full feed rate. The supply rate corresponds to the slope between points Z and S of the curve shown in FIG. By appropriate setting of the function defining the position of the swivel axis A, the timing of the feed from point Z to point S as well as the feed rate can be optimally adjusted. Further, the maximum opening width of the nipper unit, and thus the supply amount (supply cylinder 15
The amount of each rotation of) can be adjusted.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of components of a combing head of a combing machine.

2 is a schematic diagram showing the components shown in FIG. 1 in various positions.

FIG. 3 is a diagram showing a relationship between an opening width of a nipper unit of a combing head and a position of the nipper unit.

FIG. 4 is a schematic view similar to FIG. 2 showing another embodiment.

[Explanation of symbols]

1 circular comb shaft, 2 and 3 drawing roller, 4
Nipper shaft, 5 crank arms, 6 undamper frame, 7 front support part, 8 undamper plate, 9 over nipper plate, 10 over nipper arm, 11 axis, 12 spring leg, 13 circular comb segment, 14 circular comb drum, 1
5 supply cylinders, 16 motors, 17 eccentric bodies,
18, 19 axis, 20 lever arm, 21 axis, 2
2 electronic control device, 23 incremental oscillator,
A swivel axis, O open width, VE front end position, HE rear end position

Continued Front Page (72) Inventor Broger David Ville Neulandenstraße 28 Switzerland

Claims (6)

[Claims] 1. A combing machine, which is provided with a swinging nipper unit (6, 8, 9, 10), and the nipper unit can be pivoted on the undamper frame (6) and the undamper frame. And an overnipper arm (10) coupled to each other, each of which is pivotally mounted on a spring leg (12) pivotable about one axis (A). In things,
A combing machine, wherein a unique controllable motor (16) for displacing the axis (A) is assigned to the axis (A). 2. The combing machine according to claim 1, wherein the motor (16) is configured as an electric motor. 3. A control device (22) for adjusting the end position of the swinging undamper frame (6) and connecting the motor (16) when adjusting the end position of the undamper frame (6). ) Is provided and the axis (A) is adapted to be displaced in accordance with the newly adjusted end position. 4. A control device (22) is provided for operating the motor (16) so that the axis (A) is cyclically displaced at a predetermined timing with the reciprocating movement of the undamper frame (6). And the instantaneous position of the axis (A) is always the undamper frame (6).
A combing machine according to claim 1 or 2, which is a defined function of the instantaneous position of. 5. A position sensor (23) is provided for transmitting to the control device (22) a signal indicating the position of the circular comb shaft (1) or the drive shaft (4) of the nipper unit. Item 4. The combing machine according to Item 4. 6. The motor (16) has the axis (A).
6. The combing machine according to claim 1, wherein the combing machine is connectable for displacing the nipper unit into a maintenance position with the nipper unit (6, 8, 9, 10) opened.