An enhanced back beam control structure for water jet loom

Abstract

The present invention discloses a reinforced back beam control structure for a water jet loom, which includes a first back beam support and a second back beam support. A swing back beam and a fixed beam are arranged between the first back beam support and the second back beam support. Both ends of the swing back beam are respectively connected with a first tension swing arm and a second tension swing arm. The upper part of the first tension swing arm is rotationally and positionally connected with the first back beam support through a first tension support assembly and a first tension connecting rod assembly, and the lower part of the first tension swing arm is connected with a first driving connecting rod assembly. The upper part of the second tension swing arm is positionally connected with the second back beam support through a second tension support assembly and a first tension sensing assembly, and the lower part of the second tension swing arm is connected with a second driving connecting rod assembly. This control mechanism adopts a new support structure. Two-point support can enable the swing back beam to bear greater warp tension, and it is easy to disassemble and assemble and not prone to deformation.

Description

Technical Field

[0001] The present invention relates to the field of looms, and particularly to a control structure for the back beam of an enhanced water-jet loom. Background Art

[0002] A water-jet loom is a shuttleless loom that uses a jet of water to draw the weft yarn through the shed. In the prior art, the back beam structure of a water-jet loom adopts a cantilever passive spring let-off or a cantilever active let-off back beam structure. When weaving heavy fabrics, the cantilever back beam structure has low strength, high requirements for the overall rigidity of the equipment, insufficient back beam support strength, unstable warp tension, difficult to guarantee the weaving quality, and low weaving efficiency. The prior art needs to be further improved. The task of the present invention is to solve the technical defect that the cantilever support in the passive spring let-off or active let-off back beam structure in the prior art has low strength and is difficult to adapt to high-tension requirements such as feather cloth or airbag, and to provide a control structure for the back beam of an enhanced water-jet loom. Summary of the Invention

[0003] The purpose of the present invention is to provide a control structure for the back beam of an enhanced water-jet loom. This control mechanism adopts a new support structure. The two-point support can enable the swinging back beam to bear a greater warp tension, and it is easy to disassemble and assemble and not easy to deform.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A control structure for the back beam of an enhanced water-jet loom includes a first back beam support and a second back beam support. A swinging back beam and a fixed beam are arranged between the first back beam support and the second back beam support. The two ends of the swinging back beam are respectively connected with a first tension swing arm and a second tension swing arm. The upper part of the first tension swing arm is rotationally and positionally connected with the first back beam support through a first tension support assembly and a first tension link assembly. The lower part of the first tension swing arm is connected with a first drive link assembly;

[0006] The upper part of the second tension swing arm is positionally connected with the second back beam support through a second tension support assembly and a second tension sensing assembly. The lower part of the second tension swing arm is connected with a second drive link assembly.

[0007] Preferably, the first back beam support is connected with the first wallboard in the water-jet loom and is positionally connected with the first wallboard through a first auxiliary support. The first auxiliary support serves as an auxiliary support for the first back beam support;

[0008] The second back beam support is connected with the second wallboard in the water-jet loom and is positionally connected with the second wallboard through a second auxiliary support. The second auxiliary support serves as an auxiliary support for the second back beam support;

[0009] Both the swing rear beam and the fixed beam are cylindrical. The swing rear beam is located obliquely above the fixed beam. One end of the fixed beam is positioned and connected to the rear part of the first rear beam support through the first fixed beam bearing seat, and the other end of the fixed beam is positioned and connected to the rear part of the second rear beam support through the second fixed beam bearing seat.

[0010] Preferably, the first tension swing arm is in the shape of an arc-shaped plate. One end of the swing rear beam is connected to the middle part of the first tension swing arm through the first rear beam bearing assembly; at least one first swing arm positioning through hole is provided at the lower end of the first tension swing arm;

[0011] The first tension support assembly includes a first tension support and a first support support shaft. One end of the first support support shaft is connected to the upper front part of the first rear beam support. Mounting holes are provided on both sides of the upper front part of the first rear beam support to support both ends of the first support support shaft, forming a bridge support; one end of the first tension support is connected to the first support support shaft and the first tension support can rotate around the first support support shaft; the other end of the first tension support is rotationally connected to the upper part of the first tension swing arm through the first swing arm support shaft.

[0012] Preferably, the first tension link assembly includes a first tension rod. One end of the first tension rod is connected to the upper end of the first tension support; the other end of the first tension rod is connected to the upper front end of the first rear beam support.

[0013] Preferably, the second tension swing arm is in the shape of an arc-shaped plate. The other end of the swing rear beam is connected to the middle part of the second tension swing arm through the second rear beam bearing assembly; at least one second swing arm positioning through hole is provided at the lower end of the second tension swing arm;

[0014] The second tension support assembly includes a second tension support and a second support support shaft. One end of the second support support shaft is connected to the upper front part of the second rear beam support. Mounting holes are provided on both sides of the upper front part of the second rear beam support to support both ends of the second support support shaft, forming a bridge support; one end of the second tension support is connected to the second support support shaft and the second tension support can rotate around the second support support shaft; the other end of the second tension support is rotationally connected to the upper part of the second tension swing arm through the second swing arm support shaft.

[0015] Preferably, the second tension sensing assembly includes a second tension sensor link. One end of the second tension sensor link is connected to the upper end of the second tension support; the other end of the second tension sensor link is connected to the upper front end of the second rear beam support.

[0016] Preferably, the first drive link assembly is a first positive drive link combination. The first positive drive link combination includes a first positive connection head; the first positive connection head is connected to the drive shaft in the water jet loom through a first eccentric sleeve;

[0017] The first positive connector is connected to a first positive connecting tail rod through a first positive connecting rod, and the first positive connecting tail rod is connected to a first swing arm positioning through hole through a first tail rod bearing assembly.

[0018] Preferably, the second driving link assembly is a second positive driving link combination, and the second positive driving link combination includes a second positive connector; the second positive connector is connected to a driving shaft in a water jet loom through a second eccentric sleeve;

[0019] The second positive connector is connected to a second positive connecting tail rod through a second positive connecting rod, and the second positive connecting tail rod is connected to a second swing arm positioning through hole through a second tail rod bearing assembly.

[0020] Preferably, the first driving link assembly is a first negative driving link combination, and the first negative driving link combination includes a first negative connecting rod and a first negative connecting seat, and the first negative connecting seat is connected to a first rear beam seat;

[0021] One end of the first negative connecting rod is connected to the first swing arm positioning through hole through a first negative connecting bearing assembly, the other end of the first negative connecting rod passes through the first negative connecting seat and is then connected to a first spring limiting assembly, and a first buffer spring is sleeved on the first negative connecting rod between the first negative connecting seat and the first spring limiting assembly.

[0022] Preferably, the second driving link assembly is a second negative driving link combination, and the second negative driving link combination includes a second negative connecting rod and a second negative connecting seat, and the second negative connecting seat is connected to a second rear beam seat;

[0023] One end of the second negative connecting rod is connected to the second swing arm positioning through hole through a second negative connecting bearing assembly, the other end of the second negative connecting rod passes through the second negative connecting seat and is then connected to a second spring limiting assembly, and a second buffer spring is sleeved on the second negative connecting rod between the second negative connecting seat and the second spring limiting assembly.

[0024] The beneficial effects of the present invention are:

[0025] The above-mentioned reinforced water jet loom rear beam control structure solves the technical defect that in the prior art, the cantilever support in the negative spring let-off or positive let-off rear beam structure has relatively low strength and is difficult to adapt to high-tension requirements such as filled feather cloth or airbag. In the present invention, a reinforced bridge-type rear beam structure is adopted to meet the high-tension requirements of heavy fabrics. At the same time, on the basis of this structure, a negative let-off compression spring type rear beam control mechanism can be realized, and a positive let-off mechanism powered by a large box output shaft can also be realized. Moreover, the fixed rear beam can be conveniently disassembled and lifted, facilitating the operation of mounting the warp beam, and is applicable to various reed-width looms.

[0026] The above back beam control structure adopts a new support structure, including a bridge-type back beam support that can be supported at two points and left and right auxiliary supports. In the present invention, a new tension sensor support structure is adopted, including a back beam support, a tension support, and a tension support rod arranged above. A new tension swing support structure is adopted, including a swing beam tension support arm in which the swing support rotation center and the hinge center of the positive let-off drive link (or negative let-off link) are respectively located on the upper and lower sides of the movable back beam rotation center, and the three points are preferably in one plane as much as possible. The back beam control structure in the present invention is a gland-type fixed beam structure that is convenient to disassemble, and the fixed beam and the back beam support can be disassembled conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is an isometric schematic view of the reinforced water jet loom back beam control structure in Embodiment 1.

[0029] Figure 2 It is a side view schematic view of the reinforced water jet loom back beam control structure in Embodiment 1.

[0030] Figure 3 It is an isometric schematic view of the reinforced water jet loom back beam control structure in Embodiment 2.

[0031] Figure 4 It is a side view schematic view of the reinforced water jet loom back beam control structure in Embodiment 2.

[0032] Figure 5 It is a schematic view of the structural positions of the first wallboard and the second wallboard. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The present invention provides a reinforced water jet loom back beam control structure. To make the purpose, technical solutions and effects of the present invention clearer and more definite, the following further details the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The following details the present invention with reference to the drawings:

[0035] Embodiment 1

[0036] Combined with Figure 1 , Figure 2 and Figure 5, A reinforced back beam control structure for a water jet loom, comprising a first back beam support 1 and a second back beam support 2. A swing back beam 11 and a fixed beam 12 are arranged between the first back beam support 1 and the second back beam support 2.

[0037] Both ends of the swing back beam 11 are respectively connected with a first tension swing arm 21 and a second tension swing arm 22. The upper part of the first tension swing arm 21 is rotationally and positionally connected with the first back beam support 1 through a first tension support assembly 3 and a first tension connecting rod assembly 4. The lower part of the first tension swing arm 21 is connected with a first driving connecting rod assembly.

[0038] The upper part of the second tension swing arm 22 is positionally connected with the second back beam support 1 through a second tension support assembly 7 and a second tension sensing assembly 8. The lower part of the second tension swing arm 22 is connected with a second driving connecting rod assembly.

[0039] The first back beam support 1 is connected with the first wallboard 13 inside the water jet loom and is positionally connected with the first wallboard 13 through a first auxiliary support 14. The first auxiliary support 14 serves as an auxiliary support for the first back beam support 1.

[0040] The second back beam support 2 is connected with the second wallboard 15 inside the water jet loom and is positionally connected with the second wallboard 15 through a second auxiliary support 16. The second auxiliary support 16 serves as an auxiliary support for the second back beam support 2.

[0041] Both the swing back beam 11 and the fixed beam 12 are in a cylindrical shape. The swing back beam 11 is located obliquely above the fixed beam 12. One end of the fixed beam 12 is positionally connected with the rear part of the first back beam support 1 through a first fixed beam bearing seat 121, and the other end of the fixed beam 12 is positionally connected with the rear part of the second back beam support 2 through a second fixed beam bearing seat 122.

[0042] The first tension swing arm 21 is in an arc-shaped plate form. One end of the swing back beam 11 is connected with the middle part of the first tension swing arm 21 through a first back beam bearing assembly 111. At least one first swing arm positioning through hole 211 is opened at the lower end of the first tension swing arm 21.

[0043] The first tension support assembly 3 includes a first tension support 31 and a first support support shaft 32. One end of the first support support shaft 32 is connected with the front upper part of the first back beam support 1. Installation holes are provided on both sides of the front upper part of the first back beam support 1, and the two ends of the first support support shaft 32 are supported by the installation holes to form a bridge support. One end of the first tension support 31 is connected with the first support support shaft 32 and the first tension support 31 can rotate around the first support support shaft 32. The other end of the first tension support 31 is rotationally connected with the upper part of the first tension swing arm 21 through a first swing arm support shaft 33.

[0044] The first tension link assembly 4 includes a first tension strut 5, one end of the first tension strut 5 is connected to the upper end of the first tension bracket 31; the other end of the first tension strut 5 is connected to the front upper end of the first rear beam support 1.

[0045] The second tension swing arm 22 is in the shape of an arc-shaped plate, and the other end of the swing rear beam 11 is connected to the middle part of the second tension swing arm 22 through the second rear beam bearing assembly 112; at least one second swing arm positioning through hole is provided at the lower end of the second tension swing arm 22.

[0046] The second tension bracket assembly 7 includes a second tension bracket 71 and a second bracket support shaft 72. One end of the second bracket support shaft 72 is connected to the front upper part of the second rear beam support 2. Mounting holes are also provided on both sides of the front upper part of the second rear beam support 2, and these mounting holes support both ends of the second bracket support shaft 72 to form a bridge support. One end of the second tension bracket 71 is connected to the second bracket support shaft 72 and the second tension bracket 71 can rotate around the second bracket support shaft 72. The other end of the second tension bracket 71 is rotatably connected to the upper part of the second tension swing arm 22 through the second swing arm support shaft 73.

[0047] The second tension sensing assembly 8 includes a second tension sensor link 81, one end of the second tension sensor link 81 is connected to the upper end of the second tension bracket 71; the other end of the second tension sensor link 81 is connected to the front upper end of the second rear beam support 2.

[0048] The first drive link assembly is a first positive drive link combination 61, and the first positive drive link combination 61 includes a first positive connection head 611; the first positive connection head 611 is connected to the drive shaft in the water jet loom through a first eccentric sleeve 612.

[0049] The first positive connection head 611 is connected with a first positive connection tail rod 614 through a first positive connecting rod 613, and the first positive connection tail rod 614 is connected to the first swing arm positioning through hole 211 through a first tail rod bearing assembly 615.

[0050] The second drive link assembly is a second positive drive link combination 91, and the second positive drive link combination 91 includes a second positive connection head 911; the second positive connection head 911 is connected to the drive shaft in the water jet loom through a second eccentric sleeve 912.

[0051] The second positive connection head 911 is connected with a second positive connection tail rod through a second positive connecting rod, and the second positive connection tail rod is connected to the second swing arm positioning through hole through a second tail rod bearing assembly.

[0052] Embodiment 2

[0053] Combined with Figure 3 、Figure 4 and Figure 5 , a reinforced back beam control structure for a water jet loom, comprising a first back beam support 1 and a second back beam support 2, with a swing back beam 11 and a fixed beam 12 arranged between the first back beam support 1 and the second back beam support 2.

[0054] Both ends of the swing back beam 11 are respectively connected with a first tension swing arm 21 and a second tension swing arm 22. The upper part of the first tension swing arm 21 is rotationally and positionally connected to the first back beam support 1 through a first tension support assembly 3 and a first tension connecting rod assembly 4, and the lower part of the first tension swing arm 21 is connected with a first driving connecting rod assembly.

[0055] The upper part of the second tension swing arm 22 is positionally connected to the second back beam support 1 through a second tension support assembly 7 and a second tension sensing assembly 8, and the lower part of the second tension swing arm 22 is connected with a second driving connecting rod assembly.

[0056] The first back beam support 1 is connected to the first wallboard 13 inside the water jet loom and is positionally connected to the first wallboard 13 through a first auxiliary support 14. The first auxiliary support 13 serves as an auxiliary support for the first back beam support 1.

[0057] The second back beam support 2 is connected to the second wallboard 15 inside the water jet loom and is positionally connected to the second wallboard 15 through a second auxiliary support 16. The second auxiliary support 16 serves as an auxiliary support for the second back beam support 2.

[0058] Both the swing back beam 11 and the fixed beam 12 are in a cylindrical shape. The swing back beam 11 is located obliquely above the fixed beam 12. One end of the fixed beam 12 is positionally connected to the rear part of the first back beam support 1 through a first fixed beam bearing seat 121, and the other end of the fixed beam 12 is positionally connected to the rear part of the second back beam support 2 through a second fixed beam bearing seat 122.

[0059] The first tension swing arm 21 is in an arc-shaped plate form. One end of the swing back beam 11 is connected to the middle part of the first tension swing arm 21 through a first back beam bearing assembly 111; at least one first swing arm positioning through hole 211 is provided at the lower end of the first tension swing arm 21.

[0060] The first tension support assembly 3 includes a first tension support 31 and a first support support shaft 32. One end of the first support support shaft 32 is connected to the upper front part of the first back beam support 1. One end of the first tension support 31 is connected to the first support support shaft 32 and the first tension support 31 can rotate around the first support support shaft 32; the other end of the first tension support 31 is rotationally connected to the upper part of the first tension swing arm 21 through a first swing arm support shaft 33.

[0061] The first tension link assembly 4 includes a first tension rod 5. One end of the first tension rod 5 is connected to the upper end of the first tension bracket 31; the other end of the first tension rod 5 is connected to the front upper end of the first rear beam support 1.

[0062] The second tension swing arm 22 is in the shape of an arc-shaped plate. The other end of the swing rear beam 11 is connected to the middle part of the second tension swing arm 22 through a second rear beam bearing assembly 112; at least one second swing arm positioning through hole is provided at the lower end of the second tension swing arm 22.

[0063] The second tension bracket assembly 7 includes a second tension bracket 71 and a second bracket support shaft 72. One end of the second bracket support shaft 72 is connected to the front upper part of the second rear beam support 2. One end of the second tension bracket 71 is connected to the second bracket support shaft 72 and the second tension bracket 71 can rotate around the second bracket support shaft 72. The other end of the second tension bracket 71 is rotatably connected to the upper part of the second tension swing arm 22 through a second swing arm support shaft 73.

[0064] The second tension sensing assembly 8 includes a second tension sensor link 81. One end of the second tension sensor link 81 is connected to the upper end of the second tension bracket 71; the other end of the second tension sensor link 81 is connected to the front upper end of the second rear beam support 2.

[0065] The first drive link assembly is a first passive drive link combination 62. The first passive drive link combination 62 includes a first passive connection rod 621 and a first passive connection support 622. The first passive connection support 622 is connected to the first rear beam support 1.

[0066] One end of the first passive connection rod 621 is connected to the first swing arm positioning through hole 211 through a first passive connection bearing assembly 623. The other end of the first passive connection rod 621 passes through the first passive connection support 622 and is connected with a first spring limit assembly 624. A first buffer spring 625 is sleeved on the first passive connection rod 621 between the first passive connection support 622 and the first spring limit assembly 624.

[0067] The second drive link assembly is a second passive drive link combination 92. The second passive drive link combination 92 includes a second passive connection rod 921 and a second passive connection support 922. The second passive connection support 922 is connected to the second rear beam support 2.

[0068] One end of the second negative connecting rod 921 is connected to the positioning through hole of the second swing arm through the second negative connecting bearing assembly 923. The other end of the second negative connecting rod 921 passes through the second negative connecting support 922 and is connected with a second spring limiting assembly 924. A second buffer spring 925 is sleeved on the second negative connecting rod 921 between the second negative connecting support 922 and the second spring limiting assembly 921.

[0069] Embodiment 3

[0070] The above-mentioned enhanced water jet loom back beam control structure includes a first back beam support 1, a second back beam support 2, and a swing back beam and a fixed beam arranged in sequence from front to back between the first back beam support 1 and the second back beam support 2.

[0071] The enhanced water jet loom back beam control structure further includes a driving link assembly for driving the rotation of the swing arm support shaft. The driving link assembly is divided into positive and negative types. A bridge-shaped mounting hole is provided on the back beam support to form supports for both ends of the support shaft. The back beam support is connected to the wall panel and can be adjusted up and down to meet the requirements of fabric weaving process adjustment. Auxiliary supports are respectively connected to the wall panel as auxiliary supports for the back beam support to improve the support strength of the back beam support.

[0072] In the above-mentioned enhanced water jet loom back beam control structure, a tension swing arm is provided. The tension swing arm is hinge-supported by a swing arm support shaft. The tension support can rotate around the support shaft. One end of the tension support is fixed to the back beam support through a series-connected first tension rod or a second tension sensor link. Shaft linings are installed at both ends of the tension support and supported on the support shaft.

[0073] After swinging the tension swing arm like this, the pressure of the swing back beam is applied to the tension support through the swing arm support shaft and can be sensed by the tension sensor. At least one hole is provided on the swinging tension swing arm, and different holes are connected to different forms (connected to the positive type in this embodiment) of the driving link assembly.

[0074] After the above-mentioned enhanced water jet loom back beam control structure is installed on the loom, there is a driving shaft that rotates synchronously with the main shaft of the loom in front of the loom. An eccentric sleeve that can be locked and adjusted in rotation angle (matched with the rotation angle of the main shaft) is assembled on the driving shaft. The outer circle of the eccentric sleeve is equipped with a bearing, and at the same time, the bearing is installed in the positive driving link assembly.

[0075] When the loom is running, the eccentric sleeve locked on the drive shaft drives the positive drive link assembly, the tension swing arm, and the swinging back beam to achieve positive let-off motion. The rotation centers (swing arm support shafts) of the tension swing arms on the left and right sides of the back beam control structure of the enhanced water-jet loom and the hinge center of the positive drive link assembly are respectively located on the upper and lower sides of the swinging back beam, and at the same time, the axial distance between the upper and lower centers is small. The support points of the fixed beams on both sides of this enhanced back beam control mechanism and the swinging back beam are within the range of the wall panels.

[0076] In the back beam control structure of the enhanced water-jet loom, both the first back beam support 1 and the second back beam support 2 are provided with support points for supporting the fixed beam that can rotate axially, which can ensure that the warp wrap angle of the swinging back beam remains unchanged during the weaving process, and the tension induction will not change due to the amount of warp on the warp beam, the tension induction is accurate, and the warp tension control is stable. Note: When the loom is running, the heddle frame drives the warp to open and close, and the swinging back beam needs to swing accordingly to achieve stable warp tension. This active swing of the back beam is called positive let-off.

[0077] Embodiment 4

[0078] The above-mentioned back beam control structure of the enhanced water-jet loom includes a first back beam support 1, a second back beam support 2, and a swinging back beam and a fixed beam arranged in sequence from front to back between the first back beam support 1 and the second back beam support 2.

[0079] The back beam control structure of the enhanced water-jet loom further includes a drive link assembly for driving the rotation of the swing arm support shaft. The drive link assembly is divided into positive and negative types. A bridge-shaped mounting hole is provided on the back beam support to form supports for both ends of the support shaft. The back beam support is connected to the wall panel and can be adjusted up and down to meet the requirements of fabric weaving process adjustment. The auxiliary supports are respectively connected to the wall panel as auxiliary supports for the back beam support to improve the support strength of the back beam support.

[0080] In the above-mentioned back beam control structure of the enhanced water-jet loom, a tension swing arm is provided. The tension swing arm is hinge-supported by a swing arm support shaft. The tension support can rotate around the support shaft. One end of the tension support is fixed to the back beam support through a series-connected first tension rod or a second tension sensor link. Bushings are installed at both ends of the tension support and supported on the support shaft.

[0081] After swinging the tension swing arm like this, the pressure of the swinging back beam is applied to the tension support through the swing arm support shaft and can be sensed by the tension sensor. At least one hole is provided on the swinging tension swing arm, and different holes are connected to drive link assemblies of different forms (connected to the negative type in this embodiment).

[0082] Embodiment 5

[0083] The above-mentioned enhanced back beam control structure of water jet loom solves the technical defect that in the prior art, the cantilever support in the passive spring let-off or positive let-off back beam structure has low strength and is difficult to adapt to high tensions required for fabrics such as feathered fabrics or airbags. In the present invention, an enhanced bridge-type back beam structure is adopted to meet the high-tension requirements of heavy fabrics. At the same time, on the basis of this structure, a passive let-off compression spring type back beam control mechanism can be realized, and a positive let-off mechanism powered by the output shaft of a large box can also be realized. Moreover, the fixed back beam can be conveniently disassembled and lifted, facilitating the operation of mounting the warp beam. It is applicable to water jet looms of various reed widths.

[0084] The above-mentioned back beam control structure adopts a new support structure, including a bridge-type back beam support that can be supported at two points and left and right auxiliary supports. In the present invention, a new tension sensor support structure is adopted, including a back beam support, a tension support, and a tension support rod placed above. A new tension swing support structure is adopted, including a swing beam tension support arm in which the rotation center of the swing arm support and the hinge center of the positive let-off drive link (or passive let-off link) are respectively located on the upper and lower sides of the rotation center of the movable back beam, and the three points are preferably in one plane. The back beam control structure in the present invention is a gland-type fixed beam structure that is convenient for disassembly, and the fixed beam and the back beam support can be conveniently disassembled.

[0085] In the present invention, the support shaft of the support tension bracket is a bridge structure supported on both the left and right sides, increasing rigidity and improving the support strength. The rotation center of the tension swing arm connecting the swing beam and the hinge point connected to the drive link are respectively located on the upper and lower sides of the rotation center of the swing back beam. The two-point support enables the swing back beam to withstand greater warp tension. When the swing beam swings, the axial distance between the rotation center of the tension swing arm and the hinge point connected to the drive link is small, so that when the back beam receives a large warp tension, the acting force applied to the tension swing arm of the swing beam is small and it is not easily deformed.

[0086] The support points of the fixed beams on both sides of this enhanced back beam control mechanism and the swing back beam are within the range of the wallboard, which can prevent the back beam support and the wallboard from deforming when the back beam receives a large warp tension. The auxiliary support connects the wallboard and the back beam support to provide auxiliary support for the back beam support, which can prevent the back beam support from deforming when the back beam receives a large warp tension. The tension sensor is on the upper side of the swing back beam, which is easy to install. Moreover, this structure in the present invention can respectively realize positive let-off and passive let-off let-off structures.

[0087] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0088] The parts not described in the present invention can be implemented by adopting or referring to the prior art.

[0089] Certainly, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the essence of the present invention shall also fall within the protection scope of the present invention.

Claims

1. An enhanced back beam control structure for a water jet loom, comprising a first back beam support and a second back beam support, with a swing back beam and a fixed beam arranged between the first back beam support and the second back beam support, characterized in that, Both ends of the swing rear beam are respectively connected with a first tension swing arm and a second tension swing arm. The upper part of the first tension swing arm is rotationally and positionally connected with a first rear beam support through a first tension support assembly and a first tension connecting rod assembly. The lower part of the first tension swing arm is connected with a first driving connecting rod assembly; The upper part of the second tension swing arm is positionally connected with a second rear beam support through a second tension support assembly and a second tension sensing assembly. The lower part of the second tension swing arm is connected with a second driving connecting rod assembly; The first tension swing arm is in the shape of an arc-shaped plate. One end of the swing rear beam is connected with the middle part of the first tension swing arm through a first rear beam bearing assembly; at least one first swing arm positioning through hole is provided at the lower end of the first tension swing arm; The first tension support assembly includes a first tension support and a first support support shaft. One end of the first support support shaft is connected with the front upper part of the first rear beam support. Installation holes are provided on both sides of the front upper part of the first rear beam support to support both ends of the first support support shaft, forming a bridge support; one end of the first tension support is connected with the first support support shaft and the first tension support can rotate around the first support support shaft; the other end of the first tension support is rotationally connected with the upper part of the first tension swing arm through a first swing arm support shaft; The second tension swing arm is in the shape of an arc-shaped plate. The other end of the swing rear beam is connected with the middle part of the second tension swing arm through a second rear beam bearing assembly; at least one second swing arm positioning through hole is provided at the lower end of the second tension swing arm; The second tension support assembly includes a second tension support and a second support support shaft. One end of the second support support shaft is connected with the front upper part of the second rear beam support. Installation holes are provided on both sides of the front upper part of the second rear beam support to support both ends of the second support support shaft, forming a bridge support; one end of the second tension support is connected with the second support support shaft and the second tension support can rotate around the second support support shaft; the other end of the second tension support is rotationally connected with the upper part of the second tension swing arm through a second swing arm support shaft.

2. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The first rear beam support is connected with the first wall panel in the water jet loom and is positionally connected with the first wall panel through a first auxiliary support. The first auxiliary support serves as an auxiliary support for the first rear beam support; The second rear beam support is connected with the second wall panel in the water jet loom and is positionally connected with the second wall panel through a second auxiliary support. The second auxiliary support serves as an auxiliary support for the second rear beam support; Both the swing rear beam and the fixed beam are in the shape of a cylinder. The swing rear beam is located obliquely above the fixed beam. One end of the fixed beam is positionally connected with the rear part of the first rear beam support through a first fixed beam bearing seat. The other end of the fixed beam is positionally connected with the rear part of the second rear beam support through a second fixed beam bearing seat.

3. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The first tension connecting rod assembly includes a first tension rod. One end of the first tension rod is connected with the upper end of the first tension support; the other end of the first tension rod is connected with the front upper end of the first rear beam support.

4. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The second tension sensing assembly includes a second tension sensor connecting rod. One end of the second tension sensor connecting rod is connected with the upper end of the second tension support; the other end of the second tension sensor connecting rod is connected with the front upper end of the second rear beam support.

5. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The first driving link assembly is a first positive driving link assembly, and the first positive driving link assembly includes a first positive connector; the first positive connector is connected to a driving shaft in a water jet loom through a first eccentric sleeve; The first positive connector is connected with a first positive connecting tail rod through a first positive connecting rod, and the first positive connecting tail rod is connected to a first swing arm positioning through hole through a first tail rod bearing assembly.

6. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The second driving link assembly is a second positive driving link assembly, and the second positive driving link assembly includes a second positive connector; the second positive connector is connected to the driving shaft in the water jet loom through a second eccentric sleeve; The second positive connector is connected with a second positive connecting tail rod through a second positive connecting rod, and the second positive connecting tail rod is connected to a second swing arm positioning through hole through a second tail rod bearing assembly.

7. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The first driving link assembly is a first negative driving link assembly, and the first negative driving link assembly includes a first negative connecting rod and a first negative connecting support, and the first negative connecting support is connected to a first rear beam support; One end of the first negative connecting rod is connected to the first swing arm positioning through hole through a first negative connecting bearing assembly, the other end of the first negative connecting rod passes through the first negative connecting support and is then connected with a first spring limiting assembly, and a first buffer spring is sleeved on the first negative connecting rod between the first negative connecting support and the first spring limiting assembly.

8. The enhanced back beam control structure of a water jet loom according to claim 1, characterized in that, The second driving link assembly is a second negative driving link assembly, and the second negative driving link assembly includes a second negative connecting rod and a second negative connecting support, and the second negative connecting support is connected to a second rear beam support; One end of the second negative connecting rod is connected to the second swing arm positioning through hole through a second negative connecting bearing assembly, the other end of the second negative connecting rod passes through the second negative connecting support and is then connected with a second spring limiting assembly, and a second buffer spring is sleeved on the second negative connecting rod between the second negative connecting support and the second spring limiting assembly.

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