JP3537461B2 - Gripper device for combing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripper device for a combing machine, which is provided with an under gripper frame, on which a supply cylinder is bearing, and which is related to the under gripper frame. The present invention relates to a type in which an upper gripper arranged to be pivotable is provided.

[0002]

2. Description of the Related Art Various types of gripper devices of this type are known. An auxiliary gripper pivotable in relation to the under gripper frame is arranged in the gripper device of this type, and the wrap to be combed is held in front of the supply cylinder with the wrap to be combed in the open state of the upper gripper. It is also known to tighten with an under gripper plate supported by a screw and to scrape the fibers from this wrap by means of a scraping cylinder (as is known, for example, from Swiss patent 676250). Such auxiliary grippers improve the quality of the sliver formed by the combing machine, especially when combing fibrous materials from relatively long fibers. In this case, the spacing or scraping interval between the under gripper plate and the scraping cylinder is relatively large. On the other hand, the auxiliary gripper increases the mass of the gripper device that reciprocates during the operation of the combing machine, thus reducing the maximum possible scraping speed and thus the productivity. Furthermore, while the auxiliary gripper is closed, the supply cylinder cannot be rotated to feed the wrap to be combed. Further, the point in time at which the supply cylinder is rotated by the auxiliary gripper (supply point) cannot be freely selected. For this reason, in certain cases, especially when combing fibrous material from short fibers and / or where productivity is more important than quality, gripper devices without auxiliary grippers are used.

[0003]

SUMMARY OF THE INVENTION The object of the invention is to improve a gripper device for a combing machine of the type mentioned at the outset, without disadvantages, with or without auxiliary grippers. It is to provide something that can be used selectively.

Of course, even in a gripper device having an auxiliary gripper, the auxiliary gripper can be simply formed in some cases. However, if such a configuration is adopted in a known gripper device, the quality of the combing material is reduced. It will be significantly reduced. Because the space required for the auxiliary gripper, the distance between the leading edge of the under gripper plate and the supply cylinder is relatively large. Therefore, when working without auxiliary grippers, when scraping fibers from the wrap during operation of the combing machine, the spacing of the scraping cylinder relative to the location where the wrap to be combed is held (i.e. below the supply cylinder) is too large. Because.

[0005]

A gripper device according to the present invention that solves the above-mentioned problems has a bearing means for the under gripper frame to selectively bearing the supply cylinder at one of two positions. are doing.

One of the two positions is a rear end position, such that the auxiliary gripper occupies a position in front of the supply cylinder when the supply cylinder is in the rear end position. Has been selected. The other of the two positions is the forward position, at which the distance between the leading edge of the under gripper plate supported by the under gripper frame and the supply cylinder is smaller.

[0007]

As described above, according to the present invention, there is provided a gripper device for a combing machine which can be selectively used with or without an auxiliary gripper.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be specifically described below with reference to the embodiments shown in the drawings.

In FIG. 1, the comb head of a combing machine has a circular comb shaft 1, a gripper shaft 2, and scraping cylinders 3, 4, all of which are rotatable on a machine frame, not shown. Bearing.
The gripper shaft 2 has a gripper arm 5 to which a rear end of the under gripper frame 6 is pivotally attached. The front end of the under gripper frame 6 is pivotally mounted on a front support 7 that can pivot about the axis of the circular comb shaft 1. The under gripper frame 6 is the part of the gripper device to which the upper gripper with the upper gripper arm 8 and the upper gripper plate 9 supported thereon belongs.

The under gripper frame 6 is provided with a supply cylinder 11 rotatable intermittently. The supply cylinder 11 and the tank-like supply plate 12 cooperate. Furthermore, the gripper device has an auxiliary gripper provided with a wrap holder 13 supported by a two-armed lever 14. The lever 14 is pivotally connected to the under gripper frame 6. In the illustrated embodiment, this lever 1
4 is rotatable about the axis of the supply cylinder 11. A link 15 is pivotally connected to the rear arm of the lever 14, and the link 15 is pivotally connected to the upper gripper arm 8.

During operation of the combing machine, the under gripper frame 6 can be reciprocated by the gripper arm 5 between the return position shown in FIG. 1 and the pushing position shown in FIG. I have. In the return position shown in FIG. 1, the upper grippers 8, 9 are closed. The fiber tufts of the wrap (not shown) to be combed, which are pushed out by an intermittently rotating supply cylinder 11, have a lower edge of the upper gripper frame 9 and an under gripper plate supported by the under gripper frame 6. It is clamped between its leading edges 16 and combed by a circular comb segment 17 which rotates with the circular comb shaft 1.

Next, the under gripper frame 6 is moved to the pushed-out position shown in FIG. At this time, the upper grippers 8 and 9 are opened and the link 15
And the lap press 13 is lowered via the lever 14 so that the lap press 13 presses the wrap (not shown) against the under gripper plate 16 immediately behind the front edge of the under gripper plate 16. The fiber tufts squeezed by the circular comb segments 17 are caught by the scraping cylinders 3, 4 and combined with the preformed sliver and pass through a fixed comb (not shown) in the gripper device. It is scraped off the wrap. In this case, the tension rod with the wrap retainer 13 advantageously prevents the fibers from being scraped off from the wrap which has not yet been kinked.

However, the tensile rods 13, 14 increase the mass of the reciprocating gripper device. This is inconvenient when it is desired to increase the working speed. In such a case, the tension rods 13, 14, 15 can be simply configured. If a tension rod is not provided, the front edge of the upper gripper plate 16 with respect to the position where the wrap is held by the gripper device, that is, the position between the supply cylinder 11 and the tank-shaped supply plate 12, during the scraping operation. The spacing between the parts is very large. This is because the supply cylinder 11 has a relatively large distance from the leading edge of the under gripper plate 16 due to the space required for the tensile rod.

Accordingly, the under gripper frame 6 moves the supply cylinder 11 to the rear position when the auxiliary rods 13, 14, 15 are assembled, and to the front position when the auxiliary rod is removed. It has bearing means according to the invention for selectively bearing.
In the configuration shown in FIGS. 1 to 4, this bearing means comprises one bearing stand 1 on each side of the under gripper frame 6.
8 (see FIG. 3 and FIG. 4).
Is provided with a bearing notch 19 for receiving a journal 11.1 arranged at the end of the supply cylinder 11. The bearing notch 19 is arranged so as to be offset from the longitudinal center portion of the bearing stand 18, and the bearing stand 18 is provided on the under gripper frame 6 at two positions shifted from each other by about 180 ° about the vertical axis. , Can be fixed in this position. As shown in FIG.
Is located at the first of two positions, and the supply cylinder 11 is located at a position behind it, as also shown in FIGS. Rods 13, 14, 15 can be incorporated.
When the auxiliary rod is removed, the bearing base 18 is installed at the other position on the under gripper frame 6 as shown in FIG. 4, and the supply cylinder 11 is installed at the front position.

If the supply cylinder 11 is provided at the front position shown in FIG. 4, the tank-shaped supply plate 12 must be shifted forward. The tank-shaped supply plate 12 can be fixed to the under gripper frame 6 by, for example, a screw 20 extending through a long hole of the tank-shaped supply plate 12.

Advantageously, one drive gear 21 can be carried on each side of the undergripper frame 6. The drive gear 21 is connected to the supply cylinder 11
Are arranged so as to mesh with the gear 22 disposed at the end of the supply cylinder 11 at the two positions. The drive gear 21 has a supply cylinder 11 which is located at a rear position (FIG. 3).
) And in the forward position.

Supply cylinder 1 in one of two positions
The bearing means for bearing the bearing 1 may have a structure different from the structure of the embodiment shown in FIGS.

As shown in FIG. 5, for example, the bearing means has two bearing cutouts 23 and 24 provided on both sides of the under gripper frame 6 before and after the under gripper frame. Is also good. If the journal 11.1 of the supply cylinder 11 is incorporated in the rear bearing notch 23 as in the embodiment shown, the supply cylinder is in the rear position. If the journal 11.1 is integrated in the front bearing cutout 24, the supply cylinder 11 is in the front position.

As shown in FIG. 6, the bearing means has on each side of the undergripper frame 6 one bearing stand 25 with two bearing cutouts 26, 27, respectively. The rear bearing notch 26 is open upward and receives a journal 11.1 arranged at the relevant end of the supply cylinder 11. The supply cylinder 11 is in its rear position. The front bearing notch 27 is open downward. The bearing pedestal 25 is rotated about 180 ° about a substantially horizontal axis parallel to the longitudinal direction of the under gripper frame 6, is incorporated into the under gripper frame, and is fixed therein. The front bearing notch 27 then opens upwards and receives the journal 11.1, whereby the supply cylinder 11 occupies its front position.

When the height of the bearing base 25 is high, the notches 26 and 27 for bearings which open upward or downward are provided.
Are also arranged one above the other at the rear part of the bearing stand.
Such a bearing pedestal is rotated by about 180 ° about a horizontal axis extending parallel to the supply cylinder 11 and incorporated into the undergripper frame, whereby two bearing cutouts are provided on the front side of the bearing pedestal. Located in the part.

As shown in FIG. 7, the bearing means has a bearing stand on each side of the under gripper frame 6, which is located at the end of the supply cylinder 11 at that end. A bearing notch 29 is provided for receiving the journal 11.1. The bearing stand 28 is movable in a guide notch 30 provided in the under gripper frame 6 and can be fixed at a rear end position shown in the cutout 30 and at a front end position as shown. In this embodiment, the tank-shaped supply plate 12 is fixed to its strip 32 by screws 31. This strip 32 connects the two movable bearing stands 28 to each other. The bearing stand 28 and the strip 32 to which the tank-shaped supply plate 12 is fixed are moved together between the rear end position and the front end position. The trough supply plate 12 may not need to be adjusted separately as in other embodiments when the supply cylinder 11 is brought from a rear position to a front position (or vice versa).

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view of a gripper device according to an embodiment of the present invention, in a comb head of a combing machine.

FIG. 2 is a schematic vertical cross-sectional view showing the gripper device shown in FIG. 1 in a state different from that of FIG. 1;

FIG. 3 is a schematic side view of an under gripper frame of the gripper device shown in FIGS. 1 and 2;

FIG. 4 is a schematic side view showing the under gripper frame shown in FIG. 3 in which a supply cylinder is incorporated in another position.

FIG. 5 is a schematic side view of an under gripper frame according to another embodiment.

FIG. 6 is a schematic side view of an under gripper frame according to still another embodiment.

FIG. 7 is a schematic side view of an under gripper frame according to still another embodiment.

[Explanation of symbols]

Reference Signs List 1 circular comb shaft, 2 gripper device, 3, 4 scraping cylinder, 5 gripper arm, 6 under gripper frame, 7 front support, 8 upper gripper arm, 9 upper gripper plate, 10
Shaft, 11 supply cylinder, 11.1 journal, 12 tank-shaped supply plate, 13 lap presser, 14
Lever, 15 links, 16 under gripper plate, 17 circular comb segment, 18 bearing stand, 19 bearing notch, 20 screw, 21 drive gear, 22 gear, 23, 24 bearing notch, 25
Bearing stand, 26, 27 Notch for bearing, 28 Bearing stand, 29 Notch for bearing, 30 Guide notch, 31
Screw, 32 strips

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D01G 19/16

Claims (7)

(57) [Claims] 1. A gripper device for a combing machine, wherein an under gripper frame (6) is provided and a supply cylinder (1) is mounted on the under gripper frame.
1), wherein the under gripper frame (6) is provided with upper grippers (8, 9) pivotally arranged in relation to the under gripper frame (6). Bearing means (18; 23, 24; 25;) for selectively bearing the supply cylinder (11) in each of two positions;
28) A gripper device for a combing machine, comprising: 2. The bearing means (18; 25; 28) each having one bearing stand on each side of the undergripper frame (6), said bearing stand being provided with two different bearing stands of the undergripper frame (6). 2. The gripper device according to claim 1, wherein the gripper device is lockable in position and has at least one bearing notch for the supply cylinder. 3. The bearing stand (18; 25) has a vertical axis.
At each of two positions which are offset 180 ° from one another in the center, it can be fixed to the under gripper frame (6), the gripper device according to claim 2. 4. The bearing pedestal (28) is reciprocally movable between a front end position and a rear end position with respect to the under gripper frame (6), and at two end positions. The gripper device according to claim 2, wherein the gripper device is fixable to an under gripper frame. 5. The two bearing stands (28) are connected to one another by a strip (32), on which a tank-shaped supply plate (12) cooperating with a supply cylinder (11) is fixed. The gripper device according to claim 4, wherein 6. A tank-like supply plate (12) cooperating with said supply cylinder (11) reciprocates between a front end position and a rear end position relative to the undergripper frame (6). 6. The gripper device according to claim 1, wherein the gripper device is capable of being fixed to the under gripper frame at both end positions. 7. A drive gear (21) is mounted on each side of the under gripper frame (6), the drive gear (21) being a gear (21) arranged on the end of the supply cylinder. 22. The method according to claim 1, which further comprises:
The gripper device according to any one of the preceding claims.