Yarn tensioning mechanism of weaving machine

Abstract

The utility model discloses a yarn tensioning mechanism of a weaving machine, which comprises two groups of air-jet loom side frames, a first rotating shaft is movably arranged on the front side of the upper end between the two groups of air-jet loom side frames, a winding roller is fixedly arranged on the first rotating shaft, a second rotating shaft is arranged at the rear end of the winding roller, and the second rotating shaft is arranged on the front side of the upper end between the two groups of air-jet loom side frames. The second rotating shaft is movably installed between the two sets of air jet loom side frames, the expanding mandrel is fixedly installed on the second rotating shaft, and the cold-roll steel plate is fixedly installed on the outer side of the expanding mandrel. The expansion mandrel is wrapped by the cold-roll steel plate, so that a buffering hollow part is formed between the expansion mandrel and the cold-roll steel plate, and when yarns pass through the cold-roll steel plate, the cold-roll steel plate and the buffering hollow part can generate a certain buffering effect on the yarns, so that the yarns are prevented from being broken; the swing rod is further buffered to a certain degree, the yarn passing through the swing rod is also buffered and tensioned, and the yarn is further prevented from being broken.

Description

Technical Field

[0001] The utility model relates to the technical field of air jet looms, in particular to a yarn tensioning mechanism of a loom. Background Art

[0002] An air jet loom is a loom that uses air jets to insert the weft. A beating-up mechanism is required when it is used. There are many types of such beating-up mechanisms on the market today, which can basically meet people's usage needs.

[0003] At present, in the process of weaving cloth on an air jet loom, it is necessary to adjust the tension between the yarn and each roller. If the tension is too large, the yarn will break, affecting the use of the air jet loom. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the prior art, the utility model provides a yarn tensioning mechanism for a loom.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a yarn tensioning mechanism of a loom, comprising an air jet loom side frame, the air jet loom side frame is provided with two groups, a first rotating shaft is movably installed on the front side of the upper end between the two groups of the air jet loom side frames, a winding roller is fixedly installed on the first rotating shaft, a second rotating shaft is provided on the rear end of the winding roller, the second rotating shaft is movably installed between the two groups of air jet loom side frames, an expansion shaft is fixedly installed on the second rotating shaft, a cold-rolled steel plate is fixedly installed on the outer side of the expansion shaft, and a buffer hollow space is provided between the cold-rolled steel plate and the expansion shaft.

[0006] Furthermore, an elastic shaft is movably installed between the two groups of the air jet loom side frames, a group of connecting frames are fixedly installed on both sides of the elastic shaft, and a rocker arm is movably installed between the two groups of the connecting frames.

[0007] Furthermore, a group of mounting blocks is fixedly installed at the rear end of each group of connecting frames, a spring is fixedly installed at the lower end of the mounting block, the lower end of the spring is fixedly installed on a mounting plate, and the mounting plate is fixedly installed on the inner side of the jet loom side frame.

[0008] The beneficial effect of the utility model is that the expansion shaft is wrapped by the cold-rolled steel plate, so that a buffer hollow space is formed between the expansion shaft and the cold-rolled steel plate, so that when the yarn passes through the cold-rolled steel plate, the cold-rolled steel plate and the buffer hollow space can produce a certain buffering effect on the yarn to prevent the yarn from breaking, and the connecting frame and the mounting plate are connected by a spring, so that the swing rod is further buffered to a certain extent, and the yarn passing through the swing rod is also buffered and tensioned to further prevent the yarn from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 It is the front view of the utility model;

[0011] Figure 2 It is a side structural schematic diagram of the utility model;

[0012] In the figure: 1. side frame of the air jet loom, 2. first rotating shaft, 3. winding roller, 4. elastic shaft, 5. connecting frame, 6. rocker rod, 7. buffer hollow part, 8. second rotating shaft, 9. expansion shaft, 10. cold-rolled steel plate, 11. mounting block, 12. spring, 13. mounting plate. DETAILED DESCRIPTION

[0013] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0014] like Figure 1 and Figure 2 As shown, the utility model includes an air jet loom side frame 1, and the air jet loom side frame 1 is provided with two groups. The first rotating shaft 2 is movably installed on the front side of the upper end between the two groups of the air jet loom side frames 1 through a bearing, and a winding roller 3 is fixedly installed on the first rotating shaft 2, and the winding roller 3 is used for yarn unwinding.

[0015] like Figure 1 and Figure 2 As shown, a second rotating shaft 8 is provided at the rear end of the winding roller 3, and the second rotating shaft 8 is movably installed between two groups of air-jet loom side frames 1 through bearings. An expansion shaft 9 is fixedly installed on the second rotating shaft 8, and a cold-rolled steel plate 10 is fixedly installed on the outer side of the expansion shaft 9. There is a buffer hollow space 7 between the cold-rolled steel plate 10 and the expansion shaft 9, so that when the yarn passes through the cold-rolled steel plate 10, the cold-rolled steel plate 10 and the buffer hollow space 7 can produce a certain buffering effect on the yarn.

[0016] like Figure 1 and Figure 2 As shown, an elastic shaft 4 is movably installed between the two groups of the air jet loom side frames 1 through a bearing, a group of connecting frames 5 are fixedly installed on both sides of the elastic shaft 4, a rocker rod 6 is movably installed between the two groups of the connecting frames 5, a group of mounting blocks 11 are fixedly installed at the rear end of each group of the connecting frames 5, a spring 12 is fixedly installed at the lower end of the mounting block 11, and the lower end of the spring 12 is fixedly installed on the mounting plate 13, and the mounting plate 13 is fixedly installed on the inner side of the air jet loom side frame 1.

[0017] When the utility model is in use, the expansion shaft 9 is wrapped with the cold-rolled steel plate 10, so that a buffer hollow space 7 is formed between the expansion shaft 9 and the cold-rolled steel plate 10, so that when the yarn passes through the cold-rolled steel plate 10, the cold-rolled steel plate 10 and the buffer hollow space 7 can produce a certain buffering effect on the yarn to prevent the yarn from breaking. The connecting frame 5 and the mounting plate 13 are connected by the spring 12, so as to further buffer the swing rod 6 to a certain extent, and the yarn passing through the swing rod 6 is also buffered and tensioned to further prevent the yarn from breaking.

[0018] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A yarn tensioning mechanism for a loom, comprising a side frame (1) of an air jet loom, wherein the side frame (1) of the air jet loom is provided with two groups, characterized in that: A first rotating shaft (2) is movably mounted on the front upper end between the two groups of the air jet loom side frames (1); a winding roller (3) is fixedly mounted on the first rotating shaft (2); a second rotating shaft (8) is arranged at the rear end of the winding roller (3); the second rotating shaft (8) is movably mounted between the two groups of the air jet loom side frames (1); an expansion shaft (9) is fixedly mounted on the second rotating shaft (8); a cold-rolled steel plate (10) is fixedly mounted on the outer side of the expansion shaft (9); and a buffer hollow space (7) is provided between the cold-rolled steel plate (10) and the expansion shaft (9).

2. A yarn tensioning mechanism for a loom according to claim 1, characterized in that: An elastic shaft (4) is movably installed between the two groups of the air jet loom side frames (1), a group of connecting frames (5) is fixedly installed on both sides of the elastic shaft (4), and a rocker (6) is movably installed between the two groups of the connecting frames (5).

3. A yarn tensioning mechanism for a loom according to claim 2, characterized in that: A group of mounting blocks (11) is fixedly mounted on the rear end of each group of the connecting frames (5); a spring (12) is fixedly mounted on the lower end of the mounting blocks (11); the lower end of the spring (12) is fixedly mounted on a mounting plate (13); and the mounting plate (13) is fixedly mounted on the inner side of the air jet loom side frame (1).

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