CN219547213U - Weft feeder for clamping yarn firmly - Google Patents

Abstract

A weft feeder which is firm in clamping yarns comprises a connecting seat, an opener and a yarn clamp; the lower end of the expander is fixedly connected to the connecting seat, and the upper end of the expander is convexly provided with two expanding arms capable of elastically deforming; the yarn clamp comprises a left yarn clamp and a right yarn clamp, the left yarn clamp and the right yarn clamp are both rotatably connected to the connecting seat, the left yarn clamp and the right yarn clamp are both composed of a pressing part and a chuck part, and the top ends of the opening arms are abutted against the inner side of the pressing part; the left yarn clamp is provided with a jogged groove which penetrates through the front side and the rear side of the left yarn clamp, the right yarn clamp is correspondingly provided with a jogged rib which is communicated with the front side and the rear side of the right yarn clamp, and when the left yarn clamp and the right yarn clamp are mutually abutted, the jogged rib is jogged and matched in the jogged groove; the clamp head part of the left yarn clamp is also provided with a yarn through groove which penetrates through the upper end and the lower end of the left yarn clamp; the clamping device ensures that the yarn is clamped more firmly, and ensures that the weft yarn cannot fall off from the weft feeder in the production process.

Description

Weft feeder for clamping yarn firmly

Technical Field

The utility model relates to the field of weft-transferring parts of weaving machines, in particular to a weft-transferring device capable of clamping yarns firmly.

Background

The gripper loom is a loom for inserting weft yarn into a shed by a gripper (also called as a gripper), has high weft insertion speed and strong adaptability to a fabric variety, can weave broad fabric and has low machine noise, and the weft-inserting device is used as one of important parts in the gripper loom and mainly used for clamping the weft yarn and then inserting the weft yarn to the gripper, and the weft-inserting device releases the weft yarn after the gripper clamps the weft yarn, so that the gripper can start weft insertion.

The existing weft feeders for gripper loom in the market generally comprise an expander and two yarn clamps, wherein the two yarn clamps clamp under the action of the expander so as to clamp weft yarns, and after the weft yarns are transferred to the gripper, a pressing mechanism in the gripper loom presses the two yarn clamps again so as to separate the two yarn clamps from each other against the action of the expander, thereby loosening the weft yarns;

the Chinese patent with the patent number ZL202121358418.1 discloses that: "a pick device weft feeder with a guide hole, comprising a housing; guide mechanisms are arranged on two sides of the inside of the shell, a clamping arm is arranged in the shell, and a sliding mechanism is arranged in the clamping arm; the guide mechanism comprises a sliding groove, a sliding block and a connecting rod, wherein the sliding groove is arranged on one side of the inside of the shell, and the sliding block is slidably arranged in the sliding groove; according to the utility model, the guide mechanism is arranged, and the slide block in the guide mechanism is connected with the clamp arm through the connecting rod, so that when the clamp arm is opened or closed, the clamp arm can move in the sliding groove through the connecting rod and the slide block, so that the track of the upper and lower opening and closing of the clamp arm can be guided through the sliding groove, and meanwhile, the connecting rod and the slide block can limit the front and rear directions of the clamp arm, so that the phenomenon of twisting of the clamp arm in the use process is prevented, and the clamp arm is more tightly closed, and the use effect of the clamp is more excellent.

However, including the scheme described in the above-mentioned patent, the weft carrier that is used for the projectile loom on the market now all has a problem, just the yarn clamp chuck department of weft carrier on the market now is generally all plane setting, and the weft carrier simply relies on the plane on two yarn clamp chucks to extrude the fixed weft yarn when carrying out clamping to the weft yarn, and this just leads to when the weft carrier runs into the yarn that the diameter is great or the surface is smoother, and the clamp to the yarn gets not firm enough, appears taking off the condition very easily, and then can lead to production efficiency to receive the influence.

Disclosure of Invention

In order to overcome the defect that clamping of yarn by the yarn feeder is unstable in the prior art, the utility model provides the weft feeder which is firm in clamping of yarn.

The technical scheme for solving the technical problems is as follows: a weft feeder for secure clamping of a yarn, comprising:

a connecting seat;

the lower end of the expander is fixedly connected to the connecting seat, and the upper end of the expander is convexly provided with two expanding arms capable of elastically deforming;

the yarn clamp comprises a left yarn clamp and a right yarn clamp, the left yarn clamp and the right yarn clamp are both rotatably connected to the connecting seat, the left yarn clamp and the right yarn clamp are both composed of a pressing part and a chuck part, and the top ends of the opening arms are abutted against the inner side of the pressing part;

the opening arm acts on the inner side of the pressing part to enable the pressing parts of the left yarn clamp and the right yarn clamp to be away from each other, so that the chuck parts of the left yarn clamp and the right yarn clamp are mutually close to form abutting fit, and the pressing parts of the left yarn clamp and the right yarn clamp are pressed to enable the left yarn clamp and the right yarn clamp to be mutually close to overcome the action of the opening arm, so that the chuck parts of the left yarn clamp and the right yarn clamp are mutually far away from each other after the abutting fit of the left yarn clamp and the right yarn clamp is released;

the left yarn clamp is characterized in that the clamp head part of the left yarn clamp is provided with a jogged groove which penetrates through the front side and the rear side of the left yarn clamp, the clamp head part of the right yarn clamp is correspondingly provided with a jogged rib which is communicated with the front side and the rear side of the right yarn clamp in a protruding mode, and when the clamp head parts of the left yarn clamp and the right yarn clamp are mutually abutted, the jogged rib is jogged and matched in the jogged groove; and the clamp head part of the left yarn clamp is also provided with a yarn through groove which penetrates through the upper end and the lower end of the left yarn clamp.

The structure of the jogged groove and the yarn through groove is further, and the depth of the yarn through groove is smaller than that of the jogged groove.

In the use, when the chuck parts of left yarn clamp and right yarn clamp butt cooperation is with the woof clamp, the woof is pressed between gomphosis groove and gomphosis muscle to the woof is pressed and appears the part that spreads can be full of to the lead to the yarn inslot.

The structure of being convenient for press on the connecting seat press the portion is further, the left and right sides of connecting seat has all inwards been seted up and has been pressed the breach, the press portion that the yarn pressed from both sides just expose through the breach of pressing the left and right sides of connecting seat.

During the use, the pressing mechanism of the gripper loom can press the pressing part of the yarn clamp from the left side and the right side of the connecting seat through the pressing notch.

The connection mode of expander and connecting seat is further, the connecting seat front side is protruding along the length direction of connecting seat still bilateral symmetry and is equipped with twice connecting rib, the inboard of connecting rib is still link up along the length direction of connecting rib and is offered the slip joint groove, and the lower extreme both sides of expander slidable gomphosis respectively in the slip joint inslot of the left and right sides, thereby makes the expander can be followed the length direction of connecting seat carries out the slip.

The connecting structure of the expander and the connecting seat is further characterized in that a plurality of bolt holes are formed in the connecting seat in a front-back penetrating mode, a plurality of connecting holes are formed in the lower end of the expander in a corresponding penetrating mode, a fixing seat with a threaded hole in the center is further sleeved in the connecting hole, a plurality of fixing bolts penetrating through the bolt holes are connected to the rear side of the connecting seat, and the fixing bolts are in threaded fit with the threaded holes in the fixing seat.

In the use process, when the expander needs to be maintained or replaced, the fixing bolt is unscrewed, and the two sides of the expander are pushed upwards to slide in the sliding connection groove, so that the lower end of the expander is finally separated from the space between the two connecting ribs, and the expander can be removed from the connecting seat for replacement.

The yarn clamp is characterized in that the connecting mode between the yarn clamp and the connecting seat is further that two switching posts are arranged on the front side of the connecting seat in a protruding mode in a bilateral symmetry mode, switching holes are correspondingly formed in the yarn clamp, the switching posts penetrate through the switching holes, a fixing ring is further sleeved on the switching posts, and the fixing ring is in butt fit with the front side of the yarn clamp.

In the use, when the yarn clamp needs maintenance or replacement, the yarn clamp can be detached from the switching post for replacement by taking down the fixing ring from the switching post.

The connecting seat is further provided with a limiting rib along the length direction of the connecting seat in the middle of the front side of the connecting seat, the limiting rib is positioned between the two opening arms, the top of the limiting rib is also provided with limiting protrusions towards the left side and the right side, and the limiting protrusions are positioned between the pressing parts of the left yarn clamp and the right yarn clamp.

In the use, when the pressing mechanism in the projectile loom presses the pressing part of the yarn clamp, the limiting rib can limit the bent opening arm and the movable pressing part, so that the damage to the opener and the yarn clamp caused by pressing transition is prevented.

The weft delivery mode of the utility model: in the yarn transferring process of the gripper loom, the pressing mechanism in the gripper loom presses the pressing part of the yarn clamp through the pressing notch, so that the clamping head parts of the left yarn clamp and the right yarn clamp are separated from each other, when the clamping head part of the yarn clamp moves to the weft head part, the pressing mechanism sends the pressing part again, the pressure applied by the opening arm disappears and is elastically restored so as to push the pressing part of the yarn clamp to reset, the clamping head parts of the left yarn clamp and the right yarn clamp are closed again to clamp the weft, then the weft transferring device moves to one of the gripper positions in the gripper loom to push the weft out, and after the gripper clamps the weft, the pressing mechanism presses the pressing part of the yarn clamp again to enable the clamping head part of the yarn clamp to loosen the weft.

The utility model has the beneficial effects that:

1. the clamping heads of the left yarn clamp and the right yarn clamp are respectively provided with the jogged groove and the jogged rib, when the left yarn clamp and the right yarn clamp to clamp the yarns, the jogged groove and the jogged rib form jogged fit, and the yarns are positioned between the jogged groove and the jogged rib and are extruded, so that the clamping force of the yarn clamp on the yarns can be effectively increased, the clamping of the yarns is firmer, and the weft yarns are ensured not to fall off from the weft carrier in the production process;

2. the yarn through groove is formed in the clamping head part of the left yarn clamp, when yarns are diffused due to extrusion of the embedded grooves and the embedded ribs, the diffused parts can enter the yarn through groove, and therefore the situation that yarns are broken due to overlarge clamping force is effectively avoided;

3. the yarn clamp and the expander are quite convenient to assemble and disassemble, and when the yarn clamp or the expander is damaged and needs to be maintained or replaced, the yarn clamp or the expander can be rapidly disassembled from the connector, so that the influence of maintenance on the production rhythm is greatly reduced;

4. be provided with spacing muscle and press down the in-process to yarn clamp, carry out spacing effect to opening arm and yarn clamp, avoid yarn clamp to be pressed the transition and lead to opening arm and yarn clamp's damage, and then effectively reduced the impaired probability of this weft carrier.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an exploded view of the present utility model.

Fig. 3 is an exploded schematic view of the left and right yarn clamps of the present utility model.

Fig. 4 is a schematic view of another angle of the present utility model.

Fig. 5 is a schematic structural view of the connecting seat of the present utility model.

Fig. 6 is an exploded view of the expander and anchor of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding and are not used to define any directional or sequential limitation.

Examples

A weft feeder which is firm for clamping yarns is combined with the figures 1 to 6 and comprises a connecting seat 1, an opener 2 and a yarn clamp 4; the lower end of the expander 2 is fixedly connected to the connecting seat 1, and the upper end of the expander is convexly provided with two expanding arms 3 which can elastically deform; the yarn clamp 4 comprises a left yarn clamp 5 and a right yarn clamp 6, the left yarn clamp 5 and the right yarn clamp 6 are rotatably connected to the connecting seat 1, the left yarn clamp 5 and the right yarn clamp 6 are respectively composed of a pressing part 7 and a clamp head 8, and the top end of the opening arm 3 is abutted against the inner side of the pressing part 7; the opening arm 3 acts on the inner side of the pressing part 7 to separate the pressing parts 7 of the left yarn clamp 5 and the right yarn clamp 6 from each other, so that the chuck parts 8 of the left yarn clamp 5 and the right yarn clamp 6 are mutually close to form abutting fit, and the pressing parts 7 of the left yarn clamp 5 and the right yarn clamp 6 are pressed to mutually close against the action of the opening arm 3, so that the chuck parts 8 of the left yarn clamp 5 and the right yarn clamp 6 are mutually far away from each other; the clamping head part 8 of the left yarn clamp 5 is provided with a jogged groove 9 which penetrates through the front side and the rear side of the left yarn clamp, the clamping head part 8 of the right yarn clamp 6 is correspondingly provided with a jogged rib 10 which is communicated with the front side and the rear side of the right yarn clamp, and when the clamping head parts 8 of the left yarn clamp 5 and the right yarn clamp 6 are mutually abutted, the jogged rib 10 is jogged and matched in the jogged groove 9; and the clamping head part 8 of the left yarn clamp 5 is also provided with a yarn through groove 11 which penetrates through the upper end and the lower end of the left yarn clamp.

In this embodiment, the depth of the yarn passing groove 11 is smaller than the depth of the fitting groove 9.

In the use process of the embodiment, when the clamping head parts 8 of the left yarn clamp 5 and the right yarn clamp 6 are in abutting fit to clamp the weft yarn 4, the weft yarn is extruded between the jogged groove 9 and the jogged rib 10, and the part where the weft yarn is extruded and diffused can be filled into the yarn through groove 11.

In this embodiment, the left and right sides of the connection seat 1 are both provided with pressing notches 12 inward, and the pressing portions 7 of the yarn clips 4 are exposed from the left and right sides of the connection seat 1 through the pressing notches 12.

In the use process of the embodiment, the pressing mechanism of the gripper loom can press the pressing portion 7 of the yarn clamp 4 from the left side and the right side of the connecting seat 1 through the pressing notch 12.

In this embodiment, two connecting ribs 13 are further symmetrically and laterally protruded on the front side of the connecting seat 1 along the length direction of the connecting seat 1, sliding grooves 14 are further formed on the inner sides of the connecting ribs 13 along the length direction of the connecting ribs 13, and two sides of the lower end of the expander 2 are respectively slidably engaged in the two sliding grooves 14, so that the expander 2 can slide along the length direction of the connecting seat 1.

In this embodiment, the connecting seat 1 is provided with a plurality of bolt holes 15 in a front-back penetrating manner, the lower end of the expander 2 is correspondingly provided with a plurality of connecting holes 16 in a penetrating manner, the connecting holes 16 are further sleeved with a fixing seat 17 with a threaded hole in the center, the rear side of the connecting seat 1 is connected with a plurality of fixing bolts 18 penetrating through the bolt holes 15, and the fixing bolts 18 are in threaded fit with the threaded holes in the fixing seat 17.

In the use process of the embodiment, when the expander 2 needs to be maintained or replaced, the fixing bolt 18 is unscrewed, and the two sides of the expander 2 are pushed upwards to slide in the sliding connection groove 14, so that the lower end of the expander 2 is finally separated from the space between the two connecting ribs 13, and the expander 2 can be removed from the connecting seat 1 for replacement.

In this embodiment, two adapter posts 19 are further symmetrically and bilaterally protruded on the front side of the connecting seat 1, the yarn clamp 4 is correspondingly provided with adapter holes 20, the adapter posts 19 are inserted into the adapter holes 20, a fixing ring 21 is further sleeved on the adapter posts 19, and the fixing ring 21 is in butt fit with the front side of the yarn clamp 4.

In the use process of the embodiment, when the yarn clamp 4 needs to be maintained or replaced, the fixing ring 21 is removed from the transfer post 19, so that the yarn clamp 4 can be removed from the transfer post 19 for replacement.

In this embodiment, a limiting rib 22 is further protruding along the length direction of the connection seat 1 between the front side of the connection seat 1, the limiting rib 22 is located between the two opening arms 3, the top of the limiting rib 22 is further protruding towards the left and right sides and provided with limiting protrusions 23, and the limiting protrusions 23 are located between the pressing portions 7 of the left yarn clamp 5 and the right yarn clamp 6.

In the use process of the embodiment, when the pressing mechanism in the gripper loom presses the pressing part 7 of the yarn clamp 4, the limiting rib 22 can limit the bent opening arm 3 and the moving pressing part 7, so that the damage to the opener 2 and the yarn clamp 4 caused by the pressing transition is prevented.

The weft passing mode of this embodiment: in the process of yarn delivery, the pressing mechanism in the gripper loom presses the pressing part 7 of the yarn clamp 4 through the pressing notch 12, so that the clamping head parts 8 of the left yarn clamp 5 and the right yarn clamp 6 are separated from each other, when the clamping head part 8 of the yarn clamp 4 moves to the weft yarn head part, the pressing mechanism sends the pressing part 7 again, the pressure applied by the opening arm 3 disappears and the elasticity recovers, so that the pressing part 7 of the yarn clamp 4 is pushed to reset, the clamping head parts 8 of the left yarn clamp 5 and the right yarn clamp 6 are refolded to tightly clamp the weft yarn, then the weft yarn delivery device moves to one of the gripper positions in the gripper loom to push the weft yarn out, and after the weft yarn is clamped by the gripper, the pressing mechanism presses the clamping head part 7 of the yarn clamp 4 again, so that the clamping head part 8 of the yarn clamp 4 releases the weft yarn.

The advantages of this embodiment are: the clamping to yarn is more firm, and can not lead to yarn fracture because of the increase of clamping dynamics.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims (7)

1. A weft feeder for secure clamping of a yarn, comprising:

a connecting seat (1);

the lower end of the expander (2) is fixedly connected to the connecting seat (1), and the upper end of the expander is convexly provided with two expanding arms (3) capable of elastically deforming;

the yarn clamp (4) comprises a left yarn clamp (5) and a right yarn clamp (6), the left yarn clamp (5) and the right yarn clamp (6) are rotatably connected to the connecting seat (1), the left yarn clamp (5) and the right yarn clamp (6) are respectively composed of a pressing part (7) and a clamping head part (8), and the top end of the opening arm (3) is abutted against the inner side of the pressing part (7);

the opening arm (3) acts on the inner side of the pressing part (7), so that the pressing parts (7) of the left yarn clamp (5) and the right yarn clamp (6) are separated from each other, the clamping head parts (8) of the left yarn clamp (5) and the right yarn clamp (6) are mutually closed and form abutting fit, and the pressing parts (7) of the left yarn clamp (5) and the right yarn clamp (6) can be mutually closed against the action of the opening arm (3), so that the clamping head parts (8) of the left yarn clamp (5) and the right yarn clamp (6) are released from abutting fit and separated from each other;

the method is characterized in that: the left yarn clamp (5) is provided with a jogged groove (9) penetrating through the front side and the rear side of the left yarn clamp, the jogged rib (10) communicated with the front side and the rear side of the right yarn clamp is correspondingly and convexly arranged on the jaw part (8) of the right yarn clamp (6), and when the jaw parts (8) of the left yarn clamp (5) and the right yarn clamp (6) are mutually abutted, the jogged rib (10) is jogged and matched in the jogged groove (9); and a yarn through groove (11) which penetrates through the upper end and the lower end of the left yarn clamp (5) is also formed in the clamping head part (8).

2. A weft feeder for holding a yarn firmly according to claim 1, wherein: the depth of the yarn through groove (11) is smaller than the depth of the jogged groove (9).

3. A weft feeder for holding a yarn firmly according to claim 1, wherein: the left side and the right side of the connecting seat (1) are both inwards provided with pressing notches (12), and the pressing parts (7) of the yarn clamps (4) are exposed out of the left side and the right side of the connecting seat (1) through the pressing notches (12).

4. A weft feeder for holding a yarn firmly according to claim 1, wherein: the front side of the connecting seat (1) is provided with two connecting ribs (13) in a protruding mode in a left-right symmetry mode along the length direction of the connecting seat (1), the inner side of the connecting ribs (13) is provided with sliding grooves (14) in a penetrating mode along the length direction of the connecting ribs (13), two sides of the lower end of the expander (2) are respectively slidably embedded in the left-right sliding grooves (14), and accordingly the expander (2) can slide along the length direction of the connecting seat (1).

5. A weft feeder for secure clamping of yarn as in claim 4 wherein: the connecting seat (1) is provided with a plurality of bolt holes (15) in a front-back penetrating way, the lower end of the expander (2) is provided with a plurality of connecting holes (16) in a corresponding penetrating way, the connecting holes (16) are further internally sleeved with a fixing seat (17) with a threaded hole in the center, the rear side of the connecting seat (1) is connected with a plurality of fixing bolts (18) penetrating through the bolt holes (15), and the fixing bolts (18) are in threaded fit with threaded holes in the fixing seat (17).

6. A weft feeder for holding a yarn firmly according to claim 1, wherein: the front side of connecting seat (1) still bilateral symmetry protruding be equipped with two switching post (19), yarn clamp (4) on then corresponding switching hole (20) of having seted up, switching post (19) wear to establish switching hole (20) in, and still overlap on switching post (19) and establish and be connected with a solid fixed ring (21), gu fixed ring (21) butt cooperation is in the front side of yarn clamp (4).

7. A weft feeder for secure clamping of yarn as in claim 5 wherein: still be equipped with spacing muscle (22) along the length direction of connecting seat (1) is protruding in the middle of the front side of connecting seat (1), spacing muscle (22) are located two open between arm (3), the top of spacing muscle (22) still be equipped with spacing arch (23) towards the left and right sides arch, spacing arch (23) are located between pressing part (7) of left yarn clamp (5) and right yarn clamp (6).