Weft thread catching rapier head for a rapier loom
By introducing a small electric push rod and buffer assembly into the weft insertion rapier of the rapier loom, the problems of inconvenient weft yarn unwinding and yarn clamp replacement have been solved, achieving rapid replacement and effective weft yarn blocking, thereby improving the production efficiency and product quality of the loom.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING SUVAN TEXTILE MASCH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-19
AI Technical Summary
The existing weft insertion heads are prone to weft yarn slippage during use, and the replacement of the yarn clamping heads is inconvenient, which affects the production efficiency of the loom and the product quality.
A weft insertion rapier for preventing yarn slippage on a rapier loom was designed. It uses a small electric push rod to drive a limit block and a buffer assembly. The yarn clamping head can be quickly replaced through snap-fit and threaded connection, and the elastic force of the spring can be used to effectively block the weft yarn.
It enables quick replacement of the yarn clamping head and effective blocking of the weft yarn, improving the production efficiency and product quality of the loom, and reducing replacement time and difficulty of weft yarn replacement.
Smart Images
Figure CN224378376U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of textile technology, specifically to a weft insertion rapier for preventing the yarn from slipping off a rapier loom. Background Technology
[0002] The weft insertion rapier head, used for preventing weft slippage in rapier looms, is a key component in the weft yarn introduction system. Its main function is to effectively prevent the weft yarn from slipping during the weft insertion process, ensuring that the loom can perform weaving work stably and efficiently.
[0003] While existing weft-joining rapiers can be used to join weft yarns, traditional rapiers can cause the weft yarn to slip off during use, resulting in substandard products produced by the equipment. They are also inconvenient to replace the yarn clamping head, requiring a significant amount of time to replace the clamping head when using different weft yarns. To address this issue, a new anti-slip weft-joining rapier for rapier looms has been developed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a weft insertion rapier for anti-reverse yarn on a rapier loom, which has the advantages of good weft blocking effect and easy replacement of the yarn clamping head, thus solving the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a weft insertion rapier for anti-loosening yarn on a rapier loom, comprising a rapier head housing, a rapier hook fixedly mounted on the outer wall of the rapier head housing, a placement groove formed on the inner wall of the rapier head housing, a small electric push rod fixedly mounted on the inner wall of the placement groove, a limiting block fixedly mounted on the pushing end of the small electric push rod, a yarn clamping head fixedly mounted on the other end of the limiting block, a buffer assembly provided on the inner wall of the placement groove, a limiting groove formed on the outer wall of the limiting block, and a connecting block fixedly mounted on the end of the limiting block near the limiting groove.
[0006] As a preferred technical solution of this utility model: the inner wall of the connecting block is provided with a snap-fit groove and a threaded groove respectively, the inner wall of the snap-fit groove is provided with a snap-fit block, the inner wall of the threaded groove is threaded with a bolt, the inner wall of the limiting groove is slidably connected with a sliding block, and the outer wall of the sliding block is fixedly assembled with a pulling block.
[0007] As a preferred technical solution of this utility model: the buffer assembly includes a fixed block, a rotating rod rotatably connected to the inner wall of the fixed block, a connecting rod fixedly mounted on the outer wall of the rotating rod, a round rod fixedly mounted on the other end of the connecting rod, a round block fixedly mounted on the end of the round rod away from the connecting rod, a placement block provided on the outer wall of the round block, a rotating column rotatably connected to the inner wall of the placement block, an extension rod fixedly mounted on the outer wall of the rotating column, a limiting shell fixedly mounted on the end of the extension rod away from the rotating column, and a spring fixedly mounted on the inner wall of the limiting shell.
[0008] As a preferred technical solution of this utility model: the fixing block and the limiting block are fixedly assembled, the placement block is fixedly assembled with the inner wall of the placement groove, the limiting block is slidably connected with the inner wall of the placement groove, and the round block is fixedly assembled with the spring.
[0009] As a preferred technical solution of this utility model: the snap-fit block snaps into the inner wall of the snap-fit groove, the threaded grooves are respectively opened on the inner walls of the snap-fit block and the sliding block, and the connecting block is slidably connected to the inner wall of the limiting groove.
[0010] As a preferred technical solution of this utility model: there are two sets of buffer components, and the two sets of buffer components are located on the inner wall of the sword head shell respectively.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. The weft insertion rapier of the anti-reverse yarn on this rapier loom is installed by the operator moving the yarn clamping head and connecting block towards the inner wall of the limiting groove. After the connecting block moves to the end of the limiting groove, it drives the sliding block to move towards the inner wall of the limiting groove. When the sliding block moves, it drives the locking block to lock against the inner wall of the locking groove. When the locking block locks against the inner wall of the locking groove, it limits the connection block. Then, the operator drives the bolt to the inner wall of the threaded groove for threaded connection, thereby quickly replacing the yarn clamping head.
[0013] 2. The weft insertion rapier of this rapier loom anti-reverse yarn uses a small electric push rod to send a signal when clamping the weft yarn. Upon receiving the signal, the push rod moves a limiting block along the inner wall of the placement groove. Simultaneously, the movement of the placement groove causes the yarn clamping head to clamp the weft yarn. The movement of the limiting block pulls the fixed block, rotating rod, and connecting rod, causing the connecting rod to stretch the spring through the round rod and round block, thus blocking the weft yarn. When the weft yarn needs to be replaced, the pressure is released by the small electric push rod, allowing the spring's elastic potential energy to be released. This allows the limiting block and yarn clamping head to move backward quickly, enabling rapid weft yarn replacement and achieving a good blocking effect. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the yarn clamping head structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the small electric push rod of this utility model;
[0017] Figure 4 This is a schematic diagram of the spring structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the snap-fit block structure of this utility model.
[0019] In the diagram: 1. Sword head housing; 2. Sword hook; 3. Yarn clamping end; 4. Placement groove; 5. Limiting groove; 6. Small electric push rod; 7. Limiting block; 8. Buffer assembly; 9. Connecting block; 10. Snap-fit groove; 11. Threaded groove; 12. Sliding block; 13. Pulling block; 14. Snap-fit block; 15. Bolt;
[0020] 801. Fixed block; 802. Rotating rod; 803. Connecting rod; 804. Round rod; 805. Round block; 806. Placement block; 807. Rotating column; 808. Extension rod; 809. Limiting shell; 810. Spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1 - Figure 5 A weft insertion rapier for anti-loosening yarn on a rapier loom includes a rapier housing 1, a rapier hook 2 fixedly mounted on the outer wall of the rapier housing 1, a placement groove 4 opened on the inner wall of the rapier housing 1, a small electric push rod 6 fixedly mounted on the inner wall of the placement groove 4, a limiting block 7 fixedly mounted on the pushing end of the small electric push rod 6, a yarn clamping head 3 fixedly mounted on the other end of the limiting block 7, a buffer assembly 8 provided on the inner wall of the placement groove 4, a limiting groove 5 opened on the outer wall of the limiting block 7, and a connecting block 9 fixedly mounted on the end of the limiting block 7 near the limiting groove 5.
[0023] In the above structure, during the installation of the yarn clamping head 3, the operator needs to guide the yarn clamping head 3 and the connecting block 9 to move towards the inner wall of the limiting groove 5. When the connecting block 9 reaches the end of the limiting groove 5, the operator should continue to guide the sliding block 12 to move towards the inner wall of the limiting groove 5. During this process, the sliding block 12 will cause the snap-fit block 14 to snap into the inner wall of the snap-fit groove 10, thereby positioning the connecting block 9. Then, the operator needs to guide the bolt 15 to make a threaded connection with the inner wall of the threaded groove 11 to achieve quick replacement of the yarn clamping head 3.
[0024] In a preferred embodiment: the inner wall of the connecting block 9 is provided with a snap-fit groove 10 and a threaded groove 11 respectively. A snap-fit block 14 is placed on the inner wall of the snap-fit groove 10. A bolt 15 is threadedly connected to the inner wall of the threaded groove 11. A sliding block 12 is slidably connected to the inner wall of the limiting groove 5. A pulling block 13 is fixedly assembled on the outer wall of the sliding block 12.
[0025] In the above structure, the snap-fit groove 10 is used to limit the snap-fit block 14, and the bolt 15 and threaded groove 11 are used to limit the connecting block 9 and sliding block 12, so that they will not wobble when placed.
[0026] In a preferred embodiment: the buffer assembly 8 includes a fixing block 801, a rotating rod 802 is rotatably connected to the inner wall of the fixing block 801, one end of a connecting rod 803 is fixedly mounted on the outer wall of the rotating rod 802, a round rod 804 is fixedly mounted on the other end of the connecting rod 803, a round block 805 is fixedly mounted on the end of the round rod 804 away from the connecting rod 803, a placement block 806 is provided on the outer wall of the round block 805, a rotating column 807 is rotatably connected to the inner wall of the placement block 806, an extension rod 808 is fixedly mounted on the outer wall of the rotating column 807, a limiting shell 809 is fixedly mounted on the end of the extension rod 808 away from the rotating column 807, and a spring 810 is fixedly mounted on the inner wall of the limiting shell 809.
[0027] In the above structure, during the weft yarn clamping process, the small electric push rod 6 sends a signal to cause the limiting block 7 to move under the push of the inner wall of the placement groove 4. At the same time, the placement groove 4 drives the clamping head 3 to clamp the weft yarn during the movement. When the limiting block 7 moves, it pulls the fixing block 801, the rotating rod 802 and the connecting rod 803, which in turn causes the connecting rod 803 to drive the round rod 804 and the round block 805 to apply tension to the spring 810 during the movement, thereby effectively blocking the weft yarn. When it is necessary to replace the weft yarn, the small electric push rod 6 stops applying pressure, and the spring 810 releases its elastic potential energy, so that the limiting block 7 and the clamping head 3 can quickly retract, thereby achieving rapid replacement of the weft yarn and maintaining a good blocking effect.
[0028] In a preferred embodiment: the fixing block 801 is fixedly assembled with the limiting block 7, the placement block 806 is fixedly assembled with the inner wall of the placement groove 4, the limiting block 7 is slidably connected with the inner wall of the placement groove 4, and the round block 805 is fixedly assembled with the spring 810.
[0029] In the above structure, the buffer component 8 is limited by the placement groove 4 and the limiting block 7, making the buffer component 8 more stable during use. The limiting block 7 is limited by the placement groove 4, and the spring 810 is limited by the round block 805 and the limiting shell 809, so that the elastic potential energy of the spring 810 will not fall off during use.
[0030] In a preferred embodiment: the snap-fit block 14 snaps into the inner wall of the snap-fit groove 10, the threaded grooves 11 are respectively opened on the inner walls of the snap-fit block 14 and the sliding block 12, and the connecting block 9 is slidably connected to the inner wall of the limiting groove 5.
[0031] In the above structure, the sliding block 12 is limited by the snap-fit block 14 snapping into the inner wall of the snap-fit groove 10, the yarn clamping head 3 and the limiting block 7 are connected by the threaded groove 11 and the bolt 15, and the connecting block 9 is limited by the limiting groove 5.
[0032] In a preferred embodiment: there are two sets of buffer components 8, and the two sets of buffer components 8 are located on the inner wall of the sword head housing 1 respectively;
[0033] In the above structure, two sets of buffer components 8 are used to limit and support the limiting block 7, making it more stable during use.
[0034] Working principle: During the installation of the yarn clamping head 3, the operator guides the yarn clamping head 3 and the connecting block 9 towards the inner wall of the limiting groove 5 until the connecting block 9 reaches the end of the limiting groove 5. Then, the sliding block 12 begins to move towards the inner wall of the limiting groove 5. Its movement causes the locking block 14 to engage with the inner wall of the locking groove 10, thereby limiting the position of the connecting block 9. Next, the operator operates the bolt 15 to connect with the inner wall of the threaded groove 11 for quick replacement of the yarn clamping head 3. During the weft yarn clamping stage, the small electric push rod 6 sends a signal, and its pushing end causes the limiting... The positioning block 7 moves along the inner wall of the placement groove 4, and the movement of the placement groove 4 drives the clamping head 3 to clamp the weft yarn. The movement of the limiting block 7 simultaneously pulls the fixing block 801, the rotating rod 802 and the connecting rod 803. The movement of the connecting rod 803 further drives the round rod 804 and the round block 805 to stretch the spring 810 to block the weft yarn. When it is necessary to replace the weft yarn, the small electric push rod 6 releases the pressure, and the elastic potential energy of the spring 810 is released, so that the limiting block 7 and the clamping head 3 can quickly retract, thereby realizing the rapid replacement of the weft yarn and ensuring the blocking effect.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.
Claims
1. A weft insertion rapier for anti-loosening yarn on a rapier loom, comprising a rapier housing (1), characterized in that: A sword hook (2) is fixedly mounted on the outer wall of the sword head housing (1). A placement groove (4) is opened on the inner wall of the sword head housing (1). A small electric push rod (6) is fixedly mounted on the inner wall of the placement groove (4). One end of a limiting block (7) is fixedly mounted on the pushing end of the small electric push rod (6). A yarn clamping head (3) is fixedly mounted on the other end of the limiting block (7). A buffer assembly (8) is provided on the inner wall of the placement groove (4). A limiting groove (5) is opened on the outer wall of the limiting block (7). A connecting block (9) is fixedly mounted on the end of the limiting block (7) near the limiting groove (5).
2. The weft insertion rapier head for anti-loosening yarn on a rapier loom according to claim 1, characterized in that: The inner wall of the connecting block (9) is provided with a snap-fit groove (10) and a threaded groove (11). A snap-fit block (14) is placed on the inner wall of the snap-fit groove (10). A bolt (15) is threadedly connected to the inner wall of the threaded groove (11). A sliding block (12) is slidably connected to the inner wall of the limiting groove (5). A pulling block (13) is fixedly assembled on the outer wall of the sliding block (12).
3. The weft insertion rapier head for anti-loosening yarn on a rapier loom according to claim 2, characterized in that: The buffer assembly (8) includes a fixed block (801), a rotating rod (802) is rotatably connected to the inner wall of the fixed block (801), one end of a connecting rod (803) is fixedly mounted on the outer wall of the rotating rod (802), a round rod (804) is fixedly mounted on the other end of the connecting rod (803), a round block (805) is fixedly mounted on the end of the round rod (804) away from the connecting rod (803), a placement block (806) is provided on the outer wall of the round block (805), a rotating column (807) is rotatably connected to the inner wall of the placement block (806), an extension rod (808) is fixedly mounted on the outer wall of the rotating column (807), a limiting shell (809) is fixedly mounted on the end of the extension rod (808) away from the rotating column (807), and a spring (810) is fixedly mounted on the inner wall of the limiting shell (809).
4. The weft insertion rapier head for anti-loosening yarn on a rapier loom according to claim 3, characterized in that: The fixing block (801) is fixedly assembled with the limiting block (7), the placement block (806) is fixedly assembled with the inner wall of the placement groove (4), the limiting block (7) is slidably connected with the inner wall of the placement groove (4), and the round block (805) is fixedly assembled with the spring (810).
5. The weft insertion rapier head for anti-loosening yarn on a rapier loom according to claim 2, characterized in that: The snap-fit block (14) snaps into the inner wall of the snap-fit groove (10), the threaded groove (11) is respectively opened on the inner wall of the snap-fit block (14) and the sliding block (12), and the connecting block (9) is slidably connected to the inner wall of the limiting groove (5).
6. The weft insertion rapier head for anti-loosening yarn on a rapier loom according to claim 1, characterized in that: There are two sets of buffer components (8), and the two sets of buffer components (8) are located on the inner wall of the sword head shell (1).