JPH06166919A - Gripper apparatus for combing machine - Google Patents

Abstract

PURPOSE: To provide the title device which is provided with bearing means for bearing a feeding cylinder and selectively bearing the feeding cylinder at each one of plural positions in an under-gripper frame and is usable without trouble regardless of the presence or absence of auxiliary grippers. CONSTITUTION: The gripper device for a combing machine is provided with the under-gripper frame 6. The feeding cylinder 11 is born in this under-gripper frame 6 and is provided with upper grippers 8 and 9 arranged swivelably in association with the under-gripper frame 6. The under-gripper frame 6 has the bearing means 28 for selectively bearing the feeding cylinder 11 at each one of the two positions. The two bearing means 28 are interconnected by a strip 32 and a tank-like feeding plate 12 cooperating with the feeding cylinder 11 is fixed to this strip 32. Fibers are combed selectively even in the state having the auxiliary grippers or in the state having no auxiliary grippers without trouble by using such gripper device.

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, in which an under gripper frame is provided, and a supply cylinder is borne by the under gripper frame. The present invention relates to a type in which an upper gripper arranged so as to be pivotable is provided.

[0002]

2. Description of the Related Art Various types of gripper devices of this type are known. In addition, an auxiliary gripper that is rotatable in relation to the under gripper frame is arranged in the gripper device of this type, and when the upper gripper is open, the wrap to be combed is placed under the under gripper frame in front of the supply cylinder. It is also known to clamp with an under-gripper plate supported by and to scrape the fibers from this wrap with a scraping cylinder (for example known from Swiss Patent No. 676250). Such an auxiliary gripper improves the quality of the sliver formed by the combing machine, especially when the fiber material is combed from relatively long fibers. In this case, the distance between the under gripper plate and the scraping cylinder or the scraping distance is relatively large. On the other hand, the auxiliary gripper increases the mass of the gripper device that reciprocates during 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, it is not possible to freely select the time (supply time) when the supply cylinder is rotated by the auxiliary gripper. For this reason, gripper devices without auxiliary grippers are used in certain cases, especially when combing fiber material from short fibers and / or when productivity is more important than quality.

[0003]

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

Of course, even in the gripper device having the auxiliary gripper, the auxiliary gripper can be simply constructed in some cases. However, when such an arrangement is adopted in the known gripper device, the quality of the combing material is improved. It will be significantly reduced. Because of the required space 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 an auxiliary gripper, when scraping fibers from the wrap when the combing machine is running, the spacing of the scraping cylinder is too large with respect to where the wrap to be combed is held (ie below the supply cylinder). Because.

[0005]

In the gripper device according to the present invention which has solved the above-mentioned problems, the under-gripper frame has bearing means for selectively bearing the supply cylinder in one of two positions. is doing.

One of the two positions is the rear end position, which is such that the auxiliary gripper occupies a position before the supply cylinder when the supply cylinder is in the rear end position. Has been selected. The other of the two positions is the front position, in 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 comprises 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). Is supported by.
The gripper shaft 2 has a gripper arm 5, and a rear end portion of an under gripper frame 6 is pivotally attached to the gripper arm 5. The front end of the under gripper frame 6 is pivotally attached to a front support 7 which is pivotable about 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 by it belongs.

A supply cylinder 11 which can be rotated intermittently is borne by the under gripper frame 6, and the supply cylinder 11 and the tank-shaped supply plate 12 cooperate with each other. Further, the gripper device has an auxiliary gripper having a lap retainer 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 can turn around the axis of the supply cylinder 11. A link 15 is pivotally attached 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 is reciprocated by the gripper arm 5 between the return position shown in FIG. 1 and the pushing position shown in FIG. There is. In the returning position shown in FIG. 1, the upper grippers 8 and 9 are closed. An under gripper plate supported by a lower edge portion of an upper gripper frame 9 and an under gripper frame 6 is a fiber tuft of a wrap (not shown) to be combed, which is pushed out by an intermittently rotating supply cylinder 11. It is clamped against the front edge of 16 and combed by a circular comb segment 17 which rotates with the circular comb shaft 1.

The under gripper frame 6 is then moved to the extruded position shown in FIG. At this time, the upper grippers 8 and 9 are opened, and the link 15
As the lap presser 13 is lowered via the lever 14 and the lever 14, the lap presser 13 presses the lap (not shown) against the under gripper plate 16 immediately behind the front edge of the under gripper plate 16. The fiber tufts combed by the circular comb segments 17 are caught by the scraping cylinders 3, 4 and combined with the preformed sliver, through the fixed combs not shown and present in the gripper device. Scraped from the lap. In this case, the tensile rod with the lap retainer 13 advantageously prevents the fibers from being scraped from the wrap that has not yet been combed.

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 tensile rods 13, 14, 15 can be simply constructed. Without a tensile rod, the leading edge of the upper gripper plate 16 with respect to the position where the wrap is held by the gripper device, ie between the supply cylinder 11 and the trough-like supply plate 12, during the scraping operation. The distance between the parts is very large. This is because the supply cylinder 11 has a relatively large distance from the front edge of the under gripper plate 16 because of the space required for the tensile rod.

Therefore, the under gripper frame 6 positions the supply cylinder 11 at the rear position when the auxiliary rods 13, 14, 15 are incorporated, and at the front position when the auxiliary rods are removed. It has bearing means according to the invention for selectively bearing.
In the arrangement shown in FIGS. 1 to 4, this bearing means comprises one bearing stand 1 on each side of the undergripper frame 6.
8 (see FIGS. 3 and 4), and this bearing stand 18
Comprises 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 offset from the central portion of the bearing base 18 in the longitudinal direction, and the bearing base 18 is provided on the under gripper frame 6 at two positions offset by about 180 ° from each other about the vertical axis. , Can be fixed in this position. As shown in FIG. 3, the bearing mount 18
Is arranged in a first of the two positions, the supply cylinder 11 being provided in a position behind it, as also shown in FIGS. 1 and 2, by means of which Rods 13, 14, 15 can be incorporated.
When the auxiliary rod is removed, the bearing base 18 is installed in the other position of the under gripper frame 6 and the supply cylinder 11 is installed in the front position, as shown in FIG.

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

Advantageously, a drive gear 21 can be mounted on each side of the undergripper frame 6. This drive gear 21 is used for the supply cylinder 11
2 are arranged so as to mesh with the gear 22 arranged at the end of the supply cylinder 11. The drive gear 21 moves the supply cylinder 11 to the rear position (see FIG. 3).
(See) and can be rotated both in the front position.

Supply cylinder 1 in one of two positions
The bearing means for bearing 1 may be constructed in a structure different from the structure of the embodiment shown in FIGS. 3 and 4.

The bearing means has, for example, as shown in FIG. 5, two bearing notches 23 and 24 provided on both sides of the under gripper frame 6 so as to be adjacent to each other in the under gripper frame. Good. If the journal 11.1 of the supply cylinder 11 is integrated in the rear bearing notch 23 as in the illustrated embodiment, the supply cylinder is in the rear position. If the journal 11.1 is installed in the front bearing notch 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 a bearing mount 25 with two bearing notches 26, 27 respectively. The rear bearing notch 26 is open upwards 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 bearing notch 27 on the front side is open downward. The bearing base 25 is rotated by about 180 ° about a substantially horizontal axis parallel to the longitudinal direction of the under gripper frame 6 and incorporated in the under gripper frame to be 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 stand 25 is high, the notches 26 and 27 for the bearing are opened upward or downward.
Are also arranged one above the other in the rear part of the bearing base.
Such a bearing stand is rotated about 180 ° about a horizontal axis extending parallel to the supply cylinder 11 and is incorporated in the under gripper frame, whereby the two bearing cutouts are located on the front side of the bearing stand. Located in the part of.

As shown in FIG. 7, the bearing means has one bearing stand on each side of the undergripper frame 6, which bearing stand is arranged at that end of the supply cylinder 11. It has a bearing notch 29 for receiving the journal 11.1. The bearing base 28 is movable in a guide notch 30 provided in the under gripper frame 6, and can be fixed in the notch 30 at a rear end position and a front end position in the drawing. In this embodiment, the tank supply plate 12 is fixed to its strip 32 by means of screws 31. This strip 32 connects the two movable bearing mounts 28 to each other. The bearing base 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 feed plate 12 may not be separately adjusted as in the other embodiments when the feed cylinder 11 is brought from the rear position to the front position (or vice versa).

[Brief description of drawings]

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 position different from that of FIG.

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]

1 circular comb shaft, 2 gripper device, 3,4 scraping cylinder, 5 gripper arm, 6 under gripper frame, 7 front support part, 8 upper gripper arm, 9 upper gripper plate, 10
Shaft, 11 Supply Cylinder, 11.1 Journal, 12 Tank Supply Plate, 13 Lap Presser, 14
Lever, 15 link, 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 bearing notch, 28 bearing stand, 29 bearing notch, 30 guide notch, 31
Screw, 32 strips

Claims (7)

[Claims] 1. A gripper device for a combing machine, comprising an under gripper frame (6) on which a supply cylinder (1) is provided.
1) is a bearing and is provided with upper grippers (8, 9) pivotally arranged in relation to the under gripper frame (6), the under gripper frame (6) comprising: Bearing means (18; 23, 24; 25;) for selectively bearing the supply cylinder (11) in one of two positions respectively.
28) A gripper device for a combing machine, characterized in that 2. The bearing means (18; 25; 28) each have one bearing stand on each side of the under gripper frame (6), which bearing stand comprises two different under gripper frames (6). 2. The gripper device according to claim 1, which is fixable in position and has at least one bearing notch (19; 26, 27; 29) for the supply cylinder (11). 3. The bearing pedestals (18; 25) are mutually connected to each other.
3. The gripper device according to claim 2, wherein the gripper device can be fixed to the under gripper frame (6) at each of two positions offset by 0 °. 4. The bearing pedestal (28) is reciprocally movable in relation to an under gripper frame (6) between a front end position and a rear end position, and in two end positions. The gripper device according to claim 2, which can be fixed to the under gripper frame. 5. Two bearing mounts (28) are connected to each other by a strip (32), to which a tank-like supply plate (12) cooperating with a supply cylinder (11) is fixed. The gripper device according to claim 4, which is provided. 6. Reciprocating movement of a tank-shaped supply plate (12) cooperating with the supply cylinder (11) in relation to the under gripper frame (6) between a front end position and a rear end position. Gripper device according to any one of claims 1 to 5, which is possible and can be 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 arranged on the end of the supply cylinder. 22) engaging with 22).
The gripper device according to claim 1.