EP0864679B1 - Gripper clamp for a carrying gripper and loom with a gripper clamp - Google Patents

Description

The invention relates to a gripper clamp for a Bring gripper according to the preamble of claim 1 and a rapier weaving machine with a rapier clamp.

One is known from the publication EP 0 115 238 A2 Gripper clamp known, the first and second Has clamping member that is relative to a common axis are arranged pivotable to one another Pinch weft and which has a spring, which prestresses the clamping members against each other and the Clamping force generated. The two clamping members form one Inlet gap and an adjacent clamping section within which the weft thread is clamped.

It proves disadvantageous that such Gripper clamps loaded by spring force Have pinching point, which makes the thread relatively strong is claimed and the entry of different thick and differently structured threads same clamping force is severely restricted.

The invention has for its object the known Gripper clamps improve such that the disadvantages are fixed.

This object is achieved by the characterizing features of claim 1 solved.

The advantages achievable with the invention are in essential to see in that the pressure load on the weft thread to be entered is kept to a minimum is.

The invention is described below with reference to the enclosed Drawings explained.

Figur 1

Eine Seitenansicht eines ersten Ausführungsform einer erfindungsgemässen Greiferklemme, wobei ein dünner Faden gehalten ist;

Figur 2

einen Schnitt entlang der Linie II-II in Figur 1;

Figur 3

einen Schnitt entlang der Linie III-III in Figur 1;

Figur 4

eine Seitenansicht wie Figur 1, wobei ein dicker Faden gehalten ist und

Figur 5

eine Seitenansicht einer zweiten Ausführungsform einer erfindungsgemässen Greiferklemme.

Show it:

Figure 1

A side view of a first embodiment of a gripper clamp according to the invention, wherein a thin thread is held;

Figure 2

a section along the line II-II in Figure 1;

Figure 3

a section along the line III-III in Figure 1;

Figure 4

a side view like Figure 1, with a thick thread is held and

Figure 5

a side view of a second embodiment of a gripper clamp according to the invention.

Reference is made to FIGS. 1 to 3. The The gripper clamp contains a first and a second holding member 1 and 2, a hinge pin 3, a return spring 4 and a Stop element 5. The first and second holding members 1, 2 are designed as two-armed levers and by means of Joint pin 3 connected to each other, the first Holding member 1 fixed and the second holding member 2 with respect the first is pivotally arranged. The one Lever arm pair 11, 12 is on the opposite surfaces 13, 14 provided with tooth grooves 15 which in the Longitudinal extension of the lever arms 11, 12 are formed and interlock (Figures 2 and 3). This Lever arm pair 11, 12 forms starting from the free end an inlet section 16 with a decreasing gap width, a holding section 17 with a largely constant Gap width for the weft thread 18 and a section 19, in which the opposing surfaces of the lever arms 11, 12 lie one on top of the other, as shown in FIG is. To achieve this, the lever arm 12 is the second Holding member 2 of the section 19 as a projection educated. The return spring 4 is between the Lever arms 21, 22 of the other pair of lever arms arranged and holds the opposing faces of the section 19 of a pair of lever arms 11, 12 in resilient preloaded touch (Figure 2). The stop element 5 is arranged in the return spring 4 and intended the executable by the other pair of lever arms 21, 22 Limit swivel movement and at the same time the Spring deflection 4. A can be attached to the gripper clamp Organ 6 are attached to the depth of penetration of a Limit weft 18 in the hook clamp. Instead of the projection 19, a support part on a surface 13, 14 are applied.

As can be seen from Figures 1 and 4, with different from the gripper clamp in question here thick or structured weft threads are kept. A corresponding interpretation of the gap width in Holding section 17 and the spring force causes a correspondingly thin weft 18 without clamping is held only by belt friction. at a thick weft thread is a spring 4 Spring action to support the wrap friction generated. Ultimately, the gripper clamp acts as one so-called wedge clamp when the lever arms 21, 22 on Fit spacer 5.

Figure 5 shows an embodiment of the gripper clamp adjustable gap width. To set the Minimum gap width in the holding section 17 is one Adjustment screw 31 and for setting the Maximum gap width an adjusting screw 32 is provided. The adjusting screw 32 is connected to a steam organ 33, e.g. made of plastic.

The gripper clamp includes first and second Holding member 1, 2, which are arranged pivotably to each other and are in spring-loaded contact. Between the opposing surfaces of the holding links 1, 2 is a spacer 19 to one through the Grooves formed free space 15 for receiving a To create weft.

Claims (6)

1. Gripper clamp for a bringer rapier of a rapier weaving machine with a first and a second holding member (1, 2) which stand in resilient contact, with the first and the second holding member (1, 2) being formed as two-armed levers (11, 21; 12, 22) and being pivotable relative to one another about a common axis (3), characterised in that the first holding member (1) has a first surface (14) and the second holder member (2) has a second surface (13); in that the two surfaces (13, 14) form an entry section (16) with a reducing gap width and a holding section (17) with a largely constant gap width; and in that a means (19, 31) is provided in order to keep the oppositely disposed surfaces (13, 14) mutually spaced in the holding section in order to provide a formed free space (15) for the reception of the weft thread.
2. Clamp in accordance with claim 1, characterised by a projection (19) which is formed on the one surface (13, 14) of at least one holding member (1, 2).
3. Clamp in accordance with claim 1, characterised by an intermediate part which is arranged between the surfaces (13, 14) of the holding members (1, 2).
4. Clamp in accordance with claim 1, characterised by a positioning member (31) for setting the free space (15).
5. Clamp in accordance with claim 1, characterised in that the holding sections (17) are provided with at least partly inter-engaging toothed grooves (15) which extend in the longitudinal extent of the lever arms.
6. Rapier weaving machine having a gripper clamp in accordance with one of the claims 1 to 5.

Images