Scissor mechanism of air jet loom

Abstract

The utility model relates to the technical field of air-jet looms, in particular to a scissor mechanism of an air-jet loom. Comprising a scissor structure and an adjusting structure, the adjusting structure comprises a lead screw in the Y-axis direction and a nut pedestal, the scissor structure is fixedly installed above the nut pedestal and comprises a fixed edge cutter and an inclined cutter, the cutting edge of the fixed edge cutter is kept horizontal with the nut pedestal, and the side face of the inclined cutter abuts against the fixed edge cutter. The structure can adapt to spinning threads of various thicknesses, cutting can be achieved by adjusting the position of the inclined cutter while the structure faces the spinning threads of different thicknesses, and the corresponding working efficiency can be improved.

Description

Technical Field

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

[0002] An air-jet loom is a shuttleless loom that uses a jet of air to draw the weft yarn through the shed. Its working principle is to use air as the weft insertion medium, and the compressed air jet generates frictional traction on the weft yarn, pulling the weft yarn through the shed to achieve the purpose of weft insertion. The characteristics of an air-jet loom include high speed, high tension, and a small shed, which can adapt to various textile raw materials such as cotton, linen, silk, wool, etc., and can produce high-quality and high-yield fabrics.

[0003] When the yarn of a traditional air-jet loom is cut off, it is usually cut by a mechanical scissors after the air-jet loom advances the yarn into the blade opening. This will cause the yarn to separate from the break point. Generally, the method of manually holding the yarn at the break point is used to temporarily fix the yarn at the break point and prepare for re-threading. This way of breaking the yarn is not only time-consuming and laborious, but also has a long downtime, affecting the textile efficiency of the air-jet loom. A scissors structure is mentioned in the existing patent CN202111024097.6, which uses a rotating motor to control the scissors to cut. However, in the actual use process, in order to adapt to different thicknesses of textile threads, the cutting force cannot be adjusted, and sometimes the textile thread cannot be cut off. Therefore, a scissors structure that can efficiently cut textile threads is needed. Summary of the Invention

[0004] (1) Problems to be Solved

[0005] It is mainly used to solve the problem that the cutting force cannot be adjusted to adapt to different thicknesses of textile threads, and sometimes the textile thread cannot be cut off, and provides a scissors mechanism for an air-jet loom.

[0006] (2) Technical Solutions

[0007] A scissors mechanism for an air-jet loom of the utility model includes a scissors structure and an adjustment structure. The adjustment structure includes a lead screw and a nut pedestal in the Y-axis direction. A scissors structure is fixedly installed above the nut pedestal. The scissors structure includes a fixed side blade and an inclined cutting blade. The cutting edge of the fixed side blade is horizontal with the nut pedestal, and the side of the inclined cutting blade abuts against the fixed side blade.

[0008] As a preferred technical solution, the inclined cutting blade includes an inclined cutting section, and the rear part of the inclined cutting section is an arc cutting section. The arc cutting section is in a semi-circular shape, and a stop blade is rotatably arranged at the end of the arc cutting section.

[0009] As a preferred technical solution, the end of the stop blade is rotatably connected to the arc cutting section, and the other end is provided with an inclined cut. The stop blade at the inclined cut abuts against the arc cutting section.

[0010] As a preferred technical solution, the adjusting structure further includes a cylinder adjusting table, which is fixedly installed on the back of the fixed side knife. An expansion rod is fixedly installed above the cylinder adjusting table, and a cylinder is fixedly installed above the expansion rod.

[0011] As a preferred technical solution, a cylinder is fixedly installed at the tail end of the diagonal cutting knife, and the diagonal cutting knife is pushed by the cylinder.

[0012] (III) Beneficial effects

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The scissors mechanism is provided with an adjusting structure, which can realize the adjustment in three-axis directions and can adapt to textile threads of various thicknesses. Further, when facing textile threads of different thicknesses, cutting can be achieved through the adjustment of the position of the diagonal cutting knife, which can improve the corresponding working efficiency.

[0015] 2. The scissors mechanism is provided with a scissors structure, which includes a fixed side knife and a diagonal cutting knife. The diagonal cutting knife is provided with a knife guard and a diagonal cutting edge. When cutting a relatively thick textile thread, the textile thread can enter the knife guard along the diagonal cutting edge, and the textile thread can be directly cut off by the thrust of the diagonal cutting knife. Compared with the ordinary scissors cutting mechanism, the cutting rate is guaranteed and the efficiency is improved. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the back structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the front structure of the present utility model;

[0019] 1 - Scissors structure; 11 - Fixed side knife; 12 - Diagonal cutting knife; 121 - Cutting section; 122 - Arc cutting section; 123 - Knife guard; 124 - Diagonal cutting edge; 2 - Adjusting structure; 21 - Lead screw; 22 - Nut pedestal; 23 - Cylinder adjusting table; 24 - Expansion rod; 3 - Cylinder. Specific embodiments

[0020] The scissors mechanism of a jet loom according to the present utility model will be further described in conjunction with the drawings. Specific embodiment 1

[0022] As shown in the attached drawings, there is a scissor mechanism for an air-jet loom, which includes a scissor structure 1 and an adjustment structure 2. The adjustment structure 2 includes a lead screw 21 in the Y-axis direction and a nut pedestal 22. Above the nut pedestal 22, the scissor structure 1 is fixedly installed. The scissor structure 1 includes a fixed edge knife 11 and an inclined cutting knife 12. The cutting edge of the fixed edge knife 11 is horizontal with the nut pedestal 22, and the side of the inclined cutting knife 12 abuts against the fixed edge knife 11.

[0023] Further, the inclined cutting knife 12 includes an inclined surface cutting section 121. The rear part of the inclined surface cutting section 121 is an arc surface cutting section 122. The arc surface cutting section 122 is in a semi-circular arc shape. At the end of the arc surface cutting section 122, a knife guard 123 is rotatably arranged.

[0024] Further, the end of the knife guard 123 is rotatably connected to the arc surface cutting section 122, and the other end is provided with an inclined notch 124. The knife guard 123 at the inclined notch 124 abuts against the arc surface cutting section 122.

[0025] Further, the adjustment structure 2 further includes a cylinder adjustment platform 23. The cylinder adjustment platform 23 is fixedly installed on the back of the fixed edge knife 11. Above the cylinder adjustment platform 23, a telescopic rod 24 is fixedly installed. Above the telescopic rod 24, a cylinder 3 is fixedly installed. When the textile yarn is relatively thin, the telescopic rod is adjusted downward to lower the cylinder adjustment platform 23, so that the fixed edge knife 11 abuts against the cutting section 121 of the inclined cutting knife 12.

[0026] Further, a cylinder 3 is fixedly installed at the end of the inclined cutting knife 12. The inclined cutting knife 12 is pushed by the cylinder 3. Through the forward and backward movement of the cylinder 3, the textile yarn is cut off by the shearing force. Specific Embodiment 2

[0028] As shown in the attached drawings, there is a scissor mechanism for an air-jet loom, which includes a scissor structure 1 and an adjustment structure 2. The adjustment structure 2 includes a lead screw 21 in the Y-axis direction and a nut pedestal 22. Above the nut pedestal 22, the scissor structure 1 is fixedly installed. The scissor structure 1 includes a fixed edge knife 11 and an inclined cutting knife 12. The cutting edge of the fixed edge knife 11 is horizontal with the nut pedestal 22, and the side of the inclined cutting knife 12 abuts against the fixed edge knife 11.

[0029] Further, the inclined cutting knife 12 includes an inclined surface cutting section 121. The rear part of the inclined surface cutting section 121 is an arc surface cutting section 122. The arc surface cutting section 122 is in a semi-circular arc shape. At the end of the arc surface cutting section 122, a knife guard 123 is rotatably arranged.

[0030] Further, the end of the knife guard 123 is rotatably connected to the arc surface cutting section 122, and the other end is provided with an inclined notch 124. The knife guard 123 at the inclined notch 124 abuts against the arc surface cutting section 122.

[0031] Further, the adjusting structure 2 further includes a cylinder adjusting table 23. The cylinder adjusting table 23 is fixedly installed on the back of the fixed side cutter 11. An expansion rod 24 is fixedly installed above the cylinder adjusting table 23, and a cylinder 3 is fixedly installed above the expansion rod 24. When the thickness of the textile thread is appropriate, adjust the cylinder adjusting table 23 on the expansion rod so that the fixed side cutter 11 abuts against the inclined cutting edge 124 of the inclined cutter 12.

[0032] Further, a cylinder 3 is fixedly installed at the tail end of the inclined cutter 12. The inclined cutter 12 is pushed by the cylinder 3. Through the forward and backward movement of the cylinder 3, the textile thread is stuck in the inclined cutting edge 124, and the inclined cutting edge 124 can provide a shearing force and a lateral pulling force to cut off the textile thread. Specific Embodiment 3

[0034] As shown in the attached drawings, a scissor mechanism of an air-jet loom includes a scissor structure 1 and an adjusting structure 2. The adjusting structure 2 includes a lead screw 21 and a nut pedestal 22 in the Y-axis direction. The scissor structure 1 is fixedly installed above the nut pedestal 22. The scissor structure 1 includes a fixed side cutter 11 and an inclined cutter 12. The cutting edge of the fixed side cutter 11 is kept horizontal with the nut pedestal 22, and the side of the inclined cutter 12 abuts against the fixed side cutter 11.

[0035] Further, the inclined cutter 12 includes an inclined cutting section 121. The rear part of the inclined cutting section 121 is an arc cutting section 122. The arc cutting section 122 is in a semi-circular arc shape, and a stop cutter 123 is rotatably arranged at the tail end of the arc cutting section 122.

[0036] Further, the tail end of the stop cutter 123 is rotatably connected to the arc cutting section 122, and the other end is provided with an inclined cutting edge 124. The stop cutter 123 at the inclined cutting edge 124 abuts against the arc cutting section 122.

[0037] Further, the adjusting structure 2 further includes a cylinder adjusting table 23. The cylinder adjusting table 23 is fixedly installed on the back of the fixed side cutter 11. An expansion rod 24 is fixedly installed above the cylinder adjusting table 23, and a cylinder 3 is fixedly installed above the expansion rod 24. When the textile thread is thick, adjust the expansion rod upward to raise the cylinder adjusting table 23 so that the fixed side cutter 11 abuts against the arc cutting section 122 of the inclined cutter 12.

[0038] Further, a cylinder 3 is fixedly installed at the tail end of the inclined cutter 12. The inclined cutter 12 is pushed by the cylinder 3. After the textile thread is stuck in the inclined cutting edge 124 through the forward and backward movement of the cylinder 3, the textile thread slides down to the arc cutting section 122 through the stop cutter 123, and the textile thread can be directly cut off by the thrust of the inclined cutter 12.

[0039] The working principle of the present utility model is as follows: The textile thread is placed through the scissor structure 1, specifically placed between the fixed side cutter 11 and the inclined cutter 12.

[0040] When the textile thread is relatively thin, lower the cylinder adjustment platform 23 by adjusting the telescopic rod downward, so that the fixed edge knife 11 abuts against the cutting section 121 of the inclined cutting knife 12, and cut the textile thread by the shearing force through the forward and backward movement of the cylinder 3.

[0041] When the thickness of the textile thread is moderate, adjust the cylinder adjustment platform 23 on the telescopic rod so that the fixed edge knife 11 abuts against the inclined cut 124 of the inclined cutting knife 12, and clamp the textile thread in the inclined cut 124 through the forward and backward movement of the cylinder 3. The inclined cut 124 can provide a way to cut the textile thread through the shearing force and lateral pulling.

[0042] When the textile thread is relatively thick, raise the cylinder adjustment platform 23 by adjusting the telescopic rod upward, so that the fixed edge knife 11 abuts against the arc cutting section 122 of the inclined cutting knife 12. After clamping the textile thread in the inclined cut 124 through the forward and backward movement of the cylinder 3, slide the textile thread down to the arc cutting section 122 through the blocking knife 123, and the textile thread can be directly cut off by the thrust of the inclined cutting knife 12.

[0043] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A scissor mechanism of an air jet loom, comprising a scissor structure (1) and an adjustment structure (2), characterized in that: The adjustment structure (2) comprises a screw rod (21) in the Y-axis direction and a nut base (22); a scissors structure (1) is fixedly installed above the nut base (22); the scissors structure (1) comprises a fixed edge knife (11) and a bevel knife (12); the blade of the fixed edge knife (11) is kept horizontal with the nut base (22), and the side surface of the bevel knife (12) is against the fixed edge knife (11).

2. The scissor mechanism of an air jet loom according to claim 1, characterized in that: The bevel cutter (12) comprises a bevel cutting section (121), the rear portion of the bevel cutting section (121) is a curved cutting section (122), the curved cutting section (122) is in a semicircular arc shape, and a stopper (123) is rotatably provided at the rear end of the curved cutting section (122).

3. The scissor mechanism of an air jet loom according to claim 2, characterized in that: The rear end of the blocking knife (123) is rotatably connected to the arc surface cutting section (122), and the other end is provided with an oblique cut (124), and the blocking knife (123) at the oblique cut (124) abuts against the arc surface cutting section (122).

4. The scissor mechanism of an air jet loom according to claim 1, characterized in that: The adjustment structure (2) further comprises a cylinder adjustment platform (23), wherein the cylinder adjustment platform (23) is fixedly mounted on the back of the fixed edge knife (11), a telescopic rod (24) is fixedly mounted above the cylinder adjustment platform (23), and a cylinder (3) is fixedly mounted above the telescopic rod (24).

5. The scissor mechanism of an air jet loom according to claim 4, characterized in that: A cylinder (3) is fixedly mounted on the tail end of the bevel cutter (12), and the bevel cutter (12) is pushed forward by the cylinder (3).

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