A weft thread tension device for an air jet loom

Abstract

This utility model discloses a weft tension device for an air-jet loom, including a mounting frame and an extension block. The mounting frame has mounting components on both sides. Each mounting component includes mounting grooves on both sides, with a sliding frame slidably mounted on each groove. A threaded rod is rotatably mounted inside the sliding frame, and a cylindrical block is mounted on the outer side of the threaded rod. Fixing openings are provided around the cylindrical block, and a sliding groove is provided at the top of the outer side of the sliding frame. A fixing block is slidably mounted inside the sliding groove. In this utility model, after the threaded rod has rotated, a spring pushes the fixing block into the fixing opening, thereby fixing the threaded rod and preventing it from rotating. This prevents the sliding frame and positioning rod from sliding. Even when the device vibrates, the spring maintains the push, preventing the fixing block from disassembling in the fixing opening, thus preventing the positioning rod from loosening and ensuring the effective installation of the extension block.

Description

Technical Field

[0001] This utility model relates to the field of loom technology, specifically a weft tension device for an air-jet loom. Background Technology

[0002] A loom is a mechanical device that interweaves warp and weft threads to process raw materials such as yarn and silk into cloth or fabric. It is a core tool in the textile industry. Through specific mechanical structures, it controls the interlacing sequence of warp and weft threads, enabling the production of fabrics with different textures, patterns, and uses. From traditional manual foot-operated looms to modern, highly efficient automated and intelligent looms, technological advancements have greatly improved textile production efficiency and fabric quality, leading to their widespread application in clothing, home furnishings, industrial fabrics, and many other fields.

[0003] The existing Chinese patent announcement number CN220887867U, entitled "A Weft Tension Device for an Air-Jet Loom," explicitly states in its abstract that "This utility model relates to the field of loom technology and discloses a weft tension device for an air-jet loom, including a mounting frame and a mounting groove. An extension block is provided on the inner side of the mounting frame, and mounting blocks are fixed on both the left and right sides of the extension block. A positioning groove is provided on one side of the mounting block, and a movable block is slidably connected to the inner wall of the mounting groove. This utility model uses a positioning mechanism to fix the extension block, thereby facilitating the installation and removal of the extension block by the operator. Furthermore, the squeezing force of the positioning mechanisms on both sides on the extension block is the same, improving the fixing effect of the extension block. At the same time, the threaded rod can drive the positioning mechanism to move through the movable block, thereby adjusting the position of the positioning mechanism. This facilitates the fixing of extension blocks of different lengths, improves the applicability of the device, and solves the problem that the current device has poor fixing effect and low applicability during use."

[0004] However, in this technology, the loom generates vibrations during operation. These vibrations can easily cause loosening between the threaded rod and the threaded connection structure within the device. This leads to a shift in the positioning mechanism and a decrease in the fixing force on the extension block. This not only affects the stability of the weft tension but may also reduce the installation accuracy of the extension block, ultimately negatively impacting the weaving quality and production continuity. Utility Model Content

[0005] The purpose of this invention is to provide a weft tension device for an air-jet loom to solve the problem mentioned in the background art that vibration can easily cause loosening between the threaded rod and the threaded connection structure inside the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A weft tension device for an air-jet loom includes a mounting frame and an extension block, with mounting components provided on both sides of the mounting frame; The mounting assembly includes mounting slots on both sides, a sliding frame slidably mounted on the mounting slots, a threaded rod rotatably mounted inside the sliding frame, a cylindrical block mounted outside the threaded rod, fixing openings around the cylindrical block, a sliding groove on the top of the outer side of the sliding frame, and a fixing block slidably mounted inside the sliding groove.

[0007] In a preferred embodiment of this utility model, a positioning rod is provided on the inner side of the sliding frame, and positioning grooves are provided on both sides of the extension block, and the positioning rod is installed and removed in the positioning grooves.

[0008] In a preferred embodiment of this utility model, the inner side of the sliding frame is located inside the mounting groove, and the outer side of the sliding frame is located outside the mounting groove.

[0009] In a preferred embodiment of this utility model, a threaded opening is provided on the outer wall of the mounting groove, and the threaded rod is threadedly connected to the threaded opening.

[0010] In a preferred embodiment of this utility model, the cylindrical block is located inside the outer side of the sliding frame, the bottom of the fixing block is detached from the fixing opening, and a knob is provided on the outer side of the cylindrical block.

[0011] In a preferred embodiment of this utility model, a spring is provided at the top of the inner side of the slide groove, and a fixing block is connected to the bottom of the spring.

[0012] In a preferred embodiment of the present invention, a pull rod is rotatably provided on the top of the fixed block, and the pull rod extends to the top of the outer side of the slide groove.

[0013] In a preferred embodiment of this utility model, a limiting strip is provided on one side of the pull rod, and a limiting groove is provided on the top of the slide groove, wherein the limiting strip and the limiting groove are slidably connected.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0015] Beneficial effects: By rotating the threaded rod on the outside, the threaded rod and sliding frame move inward and outward through threaded transmission, thereby driving the positioning rod to move inward and outward. This allows for the installation of extension blocks of different lengths. After the threaded rod has rotated, the spring pushes the fixing block into the fixing port, thus fixing the threaded rod and preventing it from rotating. This also prevents the sliding frame and positioning rod from sliding. Even when the device vibrates, the spring maintains the push, preventing the fixing block from disassembling in the fixing port and thus preventing the positioning rod from loosening, ensuring the installation effect of the extension blocks. The fixing block can be pulled from the top by the pull rod, allowing it to be disassembled in the fixing port. By rotating the pull rod, the limiting strip is not aligned with the limiting groove but is stuck on the top of the outer side of the slide groove, thus temporarily fixing the fixing block. At this time, it is convenient to rotate the threaded rod.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the main structure of the weft tension device in an air-jet loom; Figure 2 This is a schematic diagram of the mounting groove structure in the weft tension device of an air-jet loom; Figure 3 This is a schematic diagram of the cross-sectional structure of the sliding frame in the weft tension device of an air-jet loom; Figure 4 This is a schematic diagram of the structure behind the sliding frame in the weft tension device of an air-jet loom. Figure 5 A fixed block is connected to a pulling rod in a weft tension device of an air-jet loom.

[0018] In the diagram: 1. Mounting bracket; 11. Extension block; 12. Positioning groove; 2. Mounting groove; 21. Positioning rod; 22. Sliding bracket; 23. Threaded opening; 24. Threaded rod; 3. Cylindrical block; 31. Fixing opening; 32. Slide groove; 33. Fixing block; 34. Spring; 4. Pull rod; 41. Limiting strip; 42. Limiting groove. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Please refer to Figures 1-4 This utility model discloses a weft tension device for an air-jet loom, comprising a mounting frame 1 and an extension block 11. Both the mounting frame 1 and the extension block 11 can be the mounting frame and extension block described in the prior art patent, with the same usage and working principle. The mounting frame 1 is provided with mounting components on both sides, which are used to install the extension block 11. The mounting components include mounting grooves 2 on both sides, and a sliding frame 22 is slidably mounted on the mounting groove 2. A positioning rod 21 is provided inside the sliding frame 22. The extension block 11 is provided with positioning grooves 12 on both sides, and the positioning rod 21 is installed by inserting the positioning rod 21 on both sides into the positioning groove 12.

[0021] A threaded rod 24 is rotatably mounted inside the sliding frame 22. A cylindrical block 3 is mounted on the outside of the threaded rod 24, and a knob is mounted on the outside of the cylindrical block 3. The threaded rod 24 can be rotated by rotating the knob. The inside of the sliding frame 22 is inside the mounting groove 2, and the outside of the sliding frame 22 is outside the mounting groove 2. A threaded opening 23 is provided on the outer wall of the mounting groove 2. The threaded rod 24 is threadedly connected to the threaded opening 23. By rotating the threaded rod 24 on the outside, the threaded rod 24 and the sliding frame 22 move inward and outward through the threaded transmission, thereby driving the positioning rod 21 to move inward and outward, so that extension blocks 11 of different lengths can be installed.

[0022] The cylindrical block 3 is located inside the outer side of the sliding frame 22. Fixing openings 31 are provided around the cylindrical block 3. A groove 32 is provided on the top of the outer side of the sliding frame 22. A fixing block 33 is slidably mounted inside the groove 32. The bottom of the fixing block 33 is detachable from the fixing opening 31. A spring 34 is provided on the top of the inner side of the groove 32. The bottom of the spring 34 is connected to the fixing block 33. The spring 34 always pushes the fixing block 33, causing it to insert into the fixing opening 31. After the threaded rod 24 has rotated, the spring 34 pushes the fixing block 33 into the fixing opening 31, thereby fixing the threaded rod 24 and preventing it from rotating. This, in turn, prevents the sliding frame 22 and the positioning rod 21 from sliding. Even when the device vibrates, the spring 34 keeps pushing to prevent the fixing block 33 from disassembling in the fixing port 31, thereby preventing the positioning rod 21 from loosening and ensuring the installation effect of the expansion block 11. Even if the fixing block 33 does not align with the fixing port 31 and cannot be inserted, it can be aligned by slightly rotating the threaded rod 24. Only a quarter turn of the threaded rod 24 is needed. The pitch of the threaded rod 24 is set to 2mm, so that when it is rotated a quarter turn, the sliding bracket 22 moves only 0.5mm. This amount of movement is much smaller than the fit clearance between the positioning rod 21 and the positioning groove 12, and will not affect the installation of the expansion block 11.

[0023] A pull rod 4 is rotatably mounted on the top of the fixing block 33. The pull rod 4 extends to the top of the outer side of the slide groove 32. That is, the fixing block 33 can be pulled from the top by the pull rod 4, so that it can be disassembled in the fixing port 31. A limit strip 41 is provided on one side of the pull rod 4, and a limit groove 42 is provided on the top of the slide groove 32. The limit strip 41 and the limit groove 42 are slidably connected. When the fixing block 33 is disassembled in the fixing port 31, the limit strip 41 is pulled out of the limit groove 42. By rotating the pull rod 4, the limit strip 41 is not aligned with the limit groove 42 but is stuck on the top of the outer side of the slide groove 32, thereby temporarily fixing the fixing block 33. At this time, it is convenient to rotate the threaded rod 24.

[0024] The working principle of this utility model is as follows: the positioning rods 21 on both sides are inserted into the positioning grooves 12 to install the positioning rods 21. By rotating the threaded rod 24 on the outside, the threaded rod 24 and the sliding frame 22 are moved inward and outward through the threaded transmission, thereby driving the positioning rod 21 to move inward and outward. This allows for the installation of extension blocks 11 of different lengths. After the threaded rod 24 has rotated, the spring 34 pushes the fixing block 33 into the fixing port 31 to fix the threaded rod 24, preventing it from rotating. This also prevents the sliding frame 22 and the positioning rod 21 from sliding. Even when the device vibrates, the spring 34 keeps pushing to prevent the fixing block 33 from being disassembled in the fixing port 31, thus preventing the positioning rod 21 from loosening and ensuring the installation effect of the extension block 11.

[0025] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A weft tension device for an air-jet loom, characterized in that: It includes a mounting bracket (1) and an extension block (11), with mounting components provided on both sides of the mounting bracket (1); The mounting assembly includes mounting slots (2) on both sides. A sliding frame (22) is slidably mounted on the mounting slot (2). A threaded rod (24) is rotatably mounted inside the sliding frame (22). A cylindrical block (3) is mounted on the outside of the threaded rod (24). A fixing port (31) is provided around the cylindrical block (3). A sliding groove (32) is provided on the top of the outside of the sliding frame (22). A fixing block (33) is slidably mounted inside the sliding groove (32).

2. The weft tension device for an air-jet loom according to claim 1, characterized in that, The sliding frame (22) is provided with a positioning rod (21) on the inner side, and the extension block (11) is provided with positioning grooves (12) on both sides. The positioning rod (21) is installed and removed in the positioning grooves (12).

3. The weft tension device for an air-jet loom according to claim 1, characterized in that, The inner side of the sliding frame (22) is inside the mounting groove (2), and the outer side of the sliding frame (22) is outside the mounting groove (2).

4. The weft thread tension device of the air jet loom according to claim 1, wherein The mounting groove (2) has a threaded opening (23) on its outer wall, and the threaded rod (24) is threadedly connected to the threaded opening (23).

5. The weft tension device for an air-jet loom according to claim 1, characterized in that, The cylindrical block (3) is located inside the outer side of the sliding frame (22), the bottom of the fixing block (33) is installed and removed in the fixing port (31), and a knob is provided on the outer side of the cylindrical block (3).

6. The weft thread tension device of a air jet loom according to claim 1, wherein A spring (34) is provided on the top of the inner side of the slide (32), and a fixing block (33) is connected to the bottom of the spring (34).

7. The weft tension device for an air-jet loom according to claim 1, characterized in that, The top of the fixed block (33) is rotatably provided with a pull rod (4), which extends to the top of the outer side of the slide groove (32).

8. A weft thread tension device for a gas jet loom according to claim 7, wherein A limiting strip (41) is provided on one side of the pull rod (4), and a limiting groove (42) is provided on the top of the slide groove (32). The limiting strip (41) and the limiting groove (42) are slidably connected.

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