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Shaped reed for air-jet loom and air-jet loom

A technology of air-jet looms and special-shaped reeds, applied in looms, textiles, textiles and papermaking, etc., can solve problems such as increasing air consumption, and achieve the effects of increasing air consumption, reducing air consumption, and reducing touch

Active Publication Date: 2017-05-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of the existing profiled reed is that the lower wall surface of the profiled reed is inclined downward, and the opening of the guiding recess is flared. This structure makes the airflow in the weft passage easily diffuse outwards, greatly increasing the gas consumption

Method used

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  • Shaped reed for air-jet loom and air-jet loom
  • Shaped reed for air-jet loom and air-jet loom
  • Shaped reed for air-jet loom and air-jet loom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, the present embodiment is a shaped reed for air-jet looms, including a plurality of reeds 1 arranged side by side, each reed 1 includes a fixed rod 2, and a reed body embedded on the fixed rod 2 3.

[0056] Depend on figure 2 and image 3 It can be seen that the mode of cooperation between the reed body 3 and the fixed rod 2 is as follows: the reed body 3 is provided with a dovetail groove 4 matched with the fixed rod 2, and the outer periphery of the fixed rod 2 is oppositely arranged and connected to the outer edge of the dovetail groove 4 openings. The two space-limiting flanges 5 acting together, the reed body 3 is embedded between the two space-limiting flanges 5 .

[0057] In order to enable the reed body 3 to be more tightly embedded on the fixed rod 2, between the two limiting flanges 5, the cross section of the fixed rod 2 is trapezoidal, so that the side wall of the fixed rod 2 during the embedded process Extrusion force can be ...

Embodiment 2

[0088] Such as Figure 5 As shown, this embodiment is an air-jet loom, including the profiled reed 15 provided with the weft passage 8 described in Embodiment 1, the main nozzle 16 facing the starting end of the weft passage 8, and the auxiliary nozzle system arranged along the extending direction of the weft passage 8 .

[0089] In this embodiment, the auxiliary nozzle system includes a front auxiliary nozzle group 17, a middle auxiliary nozzle group 18 and a final auxiliary nozzle group 19 arranged in sequence along the extension direction of the weft passage 8, and each auxiliary nozzle is controlled by an independent solenoid valve.

[0090] Wherein, the front auxiliary nozzle group 17 includes several first auxiliary nozzles 20 , the middle auxiliary nozzle group 18 includes several second auxiliary nozzles 21 , and the last auxiliary nozzle group 19 includes several third auxiliary nozzles 22 .

[0091] Since the reasonable arrangement of the auxiliary nozzles can also ...

Embodiment 3

[0114] Traditional air-jet looms generally use one solenoid valve to control five auxiliary nozzles, and during the working process, due to the long opening time of each group of auxiliary nozzles, the phenomenon of auxiliary nozzles emptying air will appear. For example, the opening and closing times of the first five auxiliary nozzles (controlled by the same electromagnetic valve) of the existing air-jet loom are shown in Table 7.

[0115] Table 7 The opening and closing time of the first five auxiliary nozzles of the existing air-jet loom

[0116]

[0117] In this embodiment, "°" represents the angle at which the main shaft of the air-jet loom rotates. For example, if the opening time of the auxiliary nozzle is 50°, it means that the auxiliary nozzle is opened when the main shaft of the air-jet loom rotates 50° (the total rotation angle is 360°); The closing time of the auxiliary nozzle is 120°, which means that the auxiliary nozzle is closed when the main shaft of the a...

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PUM

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Abstract

The invention discloses a profiled reed of an air jet loom and the air jet loom. The profiled reed comprises a plurality of reed plates arranged side by side. Each reed plate is provided with a guide concave part, an upper jaw part and a lower jaw part. The front ends of the upper jaw parts are provided with upper jaw arc faces with the curvature radius being R2, the front ends of the lower jaw parts are provided with the lower jaw arc faces with the curvature radius being R3, the guide concave parts are provided with inner arc faces with the curvature radius being R1, the upper jaw arc faces, the inner arc faces and the lower jaw arc faces are sequentially connected, and the distance between the upper jaw arc faces and the lower jaw arc faces is smaller than twice of R1. The upper jaw parts extend forwards by the distance L1 between the vertical tangent line of the front ends of the upper jaw parts and the vertical tangent line of the inner arc faces, the lower jaw parts extend forwards by the distance L2 between the vertical tangent line of the front ends of the lower jaw parts and the vertical tangent line of the inner arc faces, L1 is smaller than or equal to 2(R1+R2) which is smaller than or equal to 8 mm, L2 is smaller than or equal to 2(R1+R3) which is smaller than or equal to 6 mm, L1 is larger than L2, and L2 is larger than 0.5L1. The profiled reed is low in gas consumption and high in weft guide efficiency.

Description

technical field [0001] The invention relates to a textile equipment, in particular to a profiled reed for an air-jet loom and the air-jet loom. Background technique [0002] Special-shaped reed is a special reed composed of thin and many special-shaped reed pieces arranged at a certain interval, and is used for relay weft insertion. Each profiled reed is provided with a groove, and the grooves are partially connected to form a "groove", that is, a semi-closed airflow groove. [0003] The shaped reed is an important part of the air-jet loom, and the air-jet loom pushes the weft yarn into the range of the first group of auxiliary airflow during the air-jet weft insertion process. At this time, the main jet flows forward in the airflow slot and mixes with the surrounding air, the momentum gradually decreases, and the speed gradually decreases. At this time, the auxiliary nozzle continuously supplements the auxiliary airflow, so that the airflow is gradually strengthened, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D49/60D03D47/30
Inventor 金玉珍胡小冬吴震宇胡旭东
Owner ZHEJIANG SCI-TECH UNIV