Weft yarn retaining device and water jet loom

Abstract

The utility model discloses a weft yarn retaining device and a water jet loom, the weft yarn retaining device is arranged between a yarn trapper and a nozzle of the water jet loom, the weft yarn retaining device comprises a mounting seat and at least one clamping mechanism which is arranged on the mounting seat and used for fixing weft yarns, and the clamping mechanism comprises two clamping assemblies which are oppositely arranged. The clamping assembly comprises driving parts and clamping parts, a gap allowing weft to penetrate through is formed between the two clamping parts, and the driving parts are used for driving the corresponding clamping parts to move in the direction close to or away from the weft so as to change the distance between the two clamping parts. The weft yarns can be kept in a fixed state that the weft yarns are clamped by the two clamping pieces or in a relaxed state that the weft yarns are separated from the two clamping pieces. The utility model has the beneficial effect that the weft yarn can be prevented from being separated from the nozzle due to the action of self elasticity after the machine is stopped.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile equipment technical field, especially a weft thread holding device and water jet loom. BACKGROUND

[0002] Water jet loom is a shuttleless loom that uses water jets to draw weft threads through the shed. During operation, the water is ejected at high speed from the nozzle, and the liquid is ejected to form a water column under the action of the pressure machine. These water columns act as weft-drawing media, generating frictional tractive force on the weft threads, causing the weft threads on the fixed bobbin to be drawn into the shed and interlaced with the fabric on the worktable, thereby achieving high-speed weaving. In the water jet loom, the thread gripper is responsible for clamping the weft thread during the weft-drawing stage to prevent it from deviating from the predetermined trajectory. When the weft thread is drawn to the correct position by the water flow ejected from the nozzle, the thread gripper will release the weft thread at the appropriate time, allowing it to interweave with the warp threads. When the water jet loom is stopped and the water pressure in the nozzle is released, the weft thread may rebound due to the loss of tractive force. At this time, the thread gripper can tightly clamp the weft thread to prevent it from rebounding and remaining in the correct position.

[0003] At the same time, during weaving, the weft thread needs to maintain appropriate tension to ensure the quality and stability of the fabric. At this time, the larger spacing between the thread gripper and the nozzle allows the thread gripper to have greater flexibility when clamping the weft thread, thereby better controlling the tension of the weft thread. However, after stopping, due to the larger spacing between the thread gripper and the nozzle, the clamping force of the thread gripper on the weft thread is reduced, and the weft thread is easily retracted under the action of its own elasticity, which can cause the weft thread to separate from the nozzle, making it necessary to rethread the weft thread when using the water jet loom subsequently, which seriously affects work efficiency. SUMMARY

[0004] The utility model aims at providing a weft thread holding device and water jet loom to avoid the weft thread from separating from the nozzle due to its own elasticity after stopping.

[0005] The utility model is implemented by the following technical solutions.

[0006] A weft thread holding device is arranged between the thread gripper and the nozzle of a water jet loom, which includes a mounting seat and at least one clamping mechanism for fixing the weft thread arranged on the mounting seat. The clamping mechanism includes two oppositely arranged clamping components, each clamping component includes a driving member and a clamping member, and a gap allowing the weft thread to pass through is formed between the two clamping members. The driving member is used to drive the corresponding clamping member to move towards or away from the weft thread to change the spacing between the two clamping members, so that the weft thread can be kept in a fixed state clamped by the two clamping members or in a relaxed state separated from the two clamping members.

[0007] As a further improvement of the utility model, the driving member is a telescopic motor, and the clamping member is arranged on the telescopic shaft of the telescopic motor.

[0008] As a further improvement of the utility model, the clamping mechanism is provided in plurality, and the plurality of clamping mechanisms are uniformly and spacedly arranged along the preset extension direction of the weft.

[0009] As a further improvement of the utility model, the mounting seat is provided with at least two spacedly arranged guide members, the guide members are provided with guide holes allowing the weft to pass through, and the guide holes are formed in the preset extension direction of the weft.

[0010] As a further improvement of the utility model, the clamping member is a clamping plate, and the clamping plate is formed with a clamping surface for contacting the weft at one end close to the weft, and the clamping surface is arranged to extend along the preset extension direction of the weft.

[0011] As a further improvement of the utility model, one of the clamping members is provided in an elastic structure.

[0012] As a further improvement of the utility model, the two clamping assemblies are symmetrically arranged relative to the weft.

[0013] As a further improvement of the utility model, the driving member is provided with a connecting member, the connecting member is provided with a first connecting hole, the mounting seat is provided with a second connecting hole corresponding to the first connecting hole, and a fastener passes through the first connecting hole and the second connecting hole to detachably connect the connecting member and the mounting seat.

[0014] As a further improvement of the utility model, the fastener is threadedly matched with the first connecting hole and the second connecting hole.

[0015] A water-jet loom comprises the weft holding device in any of the above technical solutions.

[0016] The utility model has the advantages of:

[0017] The two clamping members are controlled to move close to each other by the two driving members, so that the weft between the two clamping members can be clamped by the two clamping members, thereby fixing the weft and avoiding the weft from moving and separating from the nozzle due to the elastic force of the weft itself; meanwhile, the two clamping members can be controlled to move away from each other by the two driving members to separate the weft from the two clamping members, so that the weft is in a relaxed state, i.e., the weft does not contact the two clamping members, thereby avoiding the interference of the clamping members on the normal conveying of the weft. BRIEF DESCRIPTION OF DRAWINGS

[0018] The preferred embodiments of the utility model will be described in detail below with the help of the drawings to help understand the purposes and advantages of the utility model, wherein:

[0019] Fig. 1 It is a top view of the weft thread holding device of the utility model;

[0020] Fig. 2 It is a side view of the weft thread holding device of the utility model. DETAILED DESCRIPTION

[0021] The utility model will be described in further detail below according to the drawings and embodiments.

[0022] In the present specification, the orientation terms such as up, down, left, right, front, back, front face, back face, top, bottom, etc. mentioned or possibly mentioned are defined relative to the structure shown in the drawings, and the words "inner" and "outer" respectively refer to the direction towards or away from the geometric center of a particular component, which are relative concepts, so it is possible to change accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms. Example 1

[0023] A weft thread holding device, referring to Figs. 1-2 , is arranged between the thread gripper and the nozzle of a water jet loom, which comprises a mounting seat 1 and at least one clamping mechanism for fixing the weft thread m arranged on the mounting seat 1, the clamping mechanism comprises two oppositely arranged clamping assemblies 2, the clamping assembly 2 comprises a driving piece 22 and a clamping piece 21, and a gap allowing the weft thread m to pass through is formed between the two clamping pieces 21, the driving piece 22 is used to drive the corresponding clamping piece 21 to move towards or away from the weft thread m to change the distance between the two clamping pieces 21, so that the weft thread m can be kept in a fixed state clamped by the two clamping pieces 21 or in a relaxed state separated from the two clamping pieces 21.

[0024] In the present embodiment, two driving pieces 22 are used to control the movement of two clamping pieces 21 to make the two clamping pieces 21 close to each other, and the two clamping pieces 21 can clamp the weft thread m located between the two clamping pieces 21, so that the weft thread m is in a fixed state, avoiding the weft thread m from moving under the action of its own elasticity and separating from the nozzle; at the same time, two driving pieces 22 can be used to control the two clamping pieces 21 to move away from each other to make the weft thread m separate from the two clamping pieces 21, at this time, the weft thread m is in a relaxed state, that is, the weft thread m does not contact with the two clamping pieces 21, avoiding the interference of the clamping piece 21 to the normal conveying of the weft thread m.

[0025] In the embodiment, the driving member 22 is a telescopic motor, the clamping member 21 is arranged on the telescopic shaft of the telescopic motor, and the telescopic motor can drive the clamping member 21 connected thereto to move when the telescopic motor works. The telescopic direction of the telescopic shaft is the moving direction of the clamping member 21.

[0026] In the embodiment, the clamping member 21 is a clamping plate, i.e., the clamping member 21 is in a plate structure, and the clamping member 21 is formed with a clamping surface for contacting the weft yarn m at one end close to the weft yarn m. The clamping surface contacts the weft yarn m, so that the clamping member 21 and the weft yarn m have a large contact area, thereby increasing the static friction between the weft yarn m and the clamping member 21, and avoiding loosening of the weft yarn m.

[0027] In the embodiment, one of the clamping members 21 is in an elastic structure, which is made of an elastic material and has certain elasticity and deformability. When the elastic structure deforms, it can provide a continuous and stable pressure, which helps to improve the fixing effect on the weft yarn m. At the same time, the weft yarn m can be prevented from being damaged by excessive pressure.

[0028] In the embodiment, the clamping mechanism is provided in a plurality of clamping mechanisms, which are uniformly and spacedly arranged along the preset extension direction of the weft yarn m. Therefore, when the distance between the thread clipper and the nozzle is large, the plurality of clamping mechanisms can be used to fix the weft yarn m at the same time, which helps to improve the stability of the weft yarn m.

[0029] In the embodiment, the mounting seat 1 is provided with at least two spacedly arranged guide members 3, the guide member 3 is provided with a guide hole 31 allowing the weft yarn m to pass through, and the guide hole 31 is formed in the preset extension direction of the weft yarn m. Therefore, the guide hole 31 can guide the weft yarn m to be transmitted in the preset direction, effectively limit the movement range of the weft yarn m, and improve the stability and accuracy of the transmission of the weft yarn m between the thread clipper and the nozzle.

[0030] In the embodiment, the two clamping assemblies 2 are symmetrically arranged relative to the weft yarn m, so that the two clamping members 21 move the same distance when clamping the weft yarn, which facilitates the control of the clamping member 21 by the driving member 22.

[0031] In the embodiment, the driving member 22 is detachably connected with the mounting base 1, the driving member 22 is provided with the connecting piece 4, the connecting piece 4 is provided with the first connecting hole, the mounting base 1 is provided with the second connecting hole corresponding to the first connecting hole, and the fastener 5 passes through the first connecting hole and the second connecting hole to detachably connect the connecting piece 4 and the mounting base 1. Specifically, the fastener 5 is in threaded cooperation with the first connecting hole and the second connecting hole, the fastener 5 is provided with external threads, and the first connecting hole and the second connecting hole are provided with internal threads. The threaded cooperation can on the one hand ensure the stable connection of the fastener 5 with the driving member 22 and the mounting base 1, and on the other hand facilitate the quick dismounting of the fastener 5 from the mounting base 1 and the connecting piece 4, and facilitate the installation and maintenance of the driving member 22. Embodiment 2

[0032] A water jet loom comprising the weft thread holding device of any of the above embodiments.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A weft thread holding device, characterized in that The device is arranged between the gripper and the nozzle of a water-jet loom, and comprises a mounting base (1) and at least one clamping mechanism for fixing weft (m) arranged on the mounting base (1), the clamping mechanism comprises two oppositely arranged clamping assemblies (2), the clamping assembly (2) comprises a driving member (22) and a clamping member (21), and a gap allowing the weft (m) to pass through is formed between the two clamping members (21), the driving member (22) is used to drive the corresponding clamping member (21) to move towards the weft (m) or away from the weft (m) to change the distance between the two clamping members (21), so that the weft (m) can be kept in a fixed state clamped by the two clamping members (21) or in a relaxed state released from the two clamping members (21).

2. A weft thread retaining device according to claim 1, characterised in that The driving member (22) is a telescopic motor, and the clamping member (21) is arranged on the telescopic shaft of the telescopic motor.

3. A weft thread retaining device according to claim 1, characterised in that The clamping mechanism is arranged in multiple, and the multiple clamping mechanisms are uniformly arranged along the preset extension direction of the weft (m).

4. A weft thread retaining device according to claim 1, characterised in that The mounting base (1) is provided with at least two spaced guide members (3), the guide member (3) is provided with a guide hole (31) allowing the weft (m) to pass through, and the guide hole (31) is formed in the preset extension direction of the weft (m).

5. A weft thread retaining device according to claim 1, characterised in that The clamping member (21) is a clamping plate, and one end of the clamping plate close to the weft (m) is provided with a clamping surface for contacting the weft (m), and the clamping surface extends along the preset extension direction of the weft (m).

6. A weft thread retaining device according to claim 5, characterised in that One of the clamping members (21) is arranged in an elastic structure.

7. A weft thread retaining device according to claim 1, characterised in that The two clamping assemblies (2) are symmetrically arranged relative to the weft (m).

8. A weft thread retaining device according to claim 1, characterised in that The driving member (22) is provided with a connecting member (4), the connecting member (4) is provided with a first connecting hole, the mounting base (1) is provided with a second connecting hole corresponding to the first connecting hole, and a fastener (5) passes through the first connecting hole and the second connecting hole to detachably connect the connecting member (4) and the mounting base (1).

9. A weft thread retaining device according to claim 8, characterised in that The fastener (5) is threadedly connected with the first connecting hole and the second connecting hole.

10. A water jet loom, characterized by, The weft fixing device comprises the weft fixing device according to any one of claims 1-9. The weft fixing device comprises the weft fixing device according to any one of claims 1-9.

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