A weft insertion sword head
By incorporating anti-slip stripes and hook holes on the weft insertion tip, the problem of existing tips being unable to adapt to various yarns has been solved. This achieves a stable and smooth weft insertion effect, adapting to the weft insertion needs of yarn, graphene yarn, and copper wire, thereby improving fabric quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU YIDA TECHNOLOGY CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-24
AI Technical Summary
The existing blade tip is difficult to adapt to the weft insertion requirements of three types of yarn, graphene thread and copper wire at the same time, which affects the fabric quality and production efficiency.
A weft insertion tip was designed. By setting anti-slip stripes on the wire clamp to increase friction, and combined with the design of hook holes and wire clamping gaps, the weft yarn is ensured to be firmly fixed during the weft insertion process. At the same time, a weft yarn guard plate and elastic elements are set to improve stability and safety.
It enables stable weft insertion of yarn, graphene yarn, and copper wire, improves the smoothness and stability of weft insertion, adapts to the needs of different yarns, avoids yarn breakage or bending, and improves fabric quality and production efficiency.
Smart Images
Figure CN224548668U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of textile equipment technology, and specifically refers to a weft insertion dagger. Background Technology
[0002] Rapier looms are currently the most widely used shuttleless looms, and the rapier head is an important component in the weft insertion mechanism of rapier looms. Its performance directly affects the quality of the fabric and the production efficiency of the loom.
[0003] Current scissor tips are generally used to feed weft threads of yarn materials. They are not well adapted to graphene threads, which have a relatively smooth surface, and are prone to breakage, affecting the quality of the fabric. At the same time, the weft insertion mechanism using this scissor tip cannot adapt to the weft insertion action of easily broken copper wires, affecting the quality of the fabric.
[0004] Therefore, how to provide a weft insertion tip that can be applied to three types of wires simultaneously: yarn, graphene wire, and copper wire has become an urgent technical problem to be solved. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a weft insertion dagger that can be applied to three types of wires: yarn, graphene wire and copper wire.
[0006] The objective of this utility model can be achieved through the following technical solutions: A weft insertion scissor head includes a scissor head body, a weft insertion end at the front end of the scissor head body, and a horizontally rotatable wire clamp inside the scissor head body. The front end of the weft insertion end is bent upward and formed into a hook portion. There is a wire clamping gap between the hook portion and the upper side of the weft insertion end, which can accommodate the front end of the wire clamp. The middle part of the wire clamp is hinged to the scissor head body. An elastic element is installed at the rear part of the scissor head body to drive the wire clamp to rotate around the hinge axis so that the front end of the wire clamp is engaged in the wire clamping gap. The rear end of the wire clamp is formed with a driving part protruding from the side wall of the scissor head body. The scissor head is characterized in that: the front part of the wire clamp is formed with a flat striped part, and a plurality of anti-slip stripes are provided on the upper side of the striped part.
[0007] This weft insertion tip increases the friction between the wire clamp and the weft thread by setting anti-slip stripes on the striped part, thus adapting to the weft insertion needs of three different wire materials: yarn, graphene thread, and copper wire.
[0008] In the aforementioned weft insertion tip, a hook hole is provided at the front end of the weft insertion end, the hook hole passes through the weft insertion end from both sides, the rear end of the hook hole is connected to the wire clamping gap, and the diameter of the hook hole is greater than the height of the front end of the wire clamping gap.
[0009] After the weft thread is pulled into place, the thread clamp releases the weft thread. Under the action of the pulling force, the end of the weft thread will enter the hook hole. The insertion end continues to move backward, thereby causing the end of the weft thread to separate from the insertion end. The design of the hook hole makes it easy for the weft thread to separate from the insertion head after the thread clamp is released. The structure is simple and helps to improve the smoothness and stability of the insertion action.
[0010] In the aforementioned weft insertion tip, the height of the wire clamping gap gradually increases from front to back, and the distance between the lower side of the hook and the upper side of the wire clamp gradually increases from front to back.
[0011] The aforementioned clamping gap and the combination of the clamping pliers allow the weft insertion end to clamp tighter and tighter as the weft is pulled, firmly fixing the weft, thus adapting to the weft insertion needs of three different types of wires: yarn, graphene wire, and copper wire.
[0012] In the aforementioned weft insertion tip, the anti-slip stripes are elongated, with their length direction parallel to the length direction of the wire clamp, and several anti-slip stripes are spaced apart along the width direction of the wire clamp.
[0013] The aforementioned anti-slip stripe design increases the frictional force perpendicular to the length of the wire clamp, and the weft insertion tip mainly relies on this frictional force to fix the weft thread, thus greatly increasing the frictional force between the weft thread and the insertion end.
[0014] In the aforementioned weft insertion tip, the front end of the striped portion is slightly upturned, and the front end of the striped portion can abut against the front end of the hook portion.
[0015] The upward-curving design at the front end of the striped section allows this weft insertion tip to adapt to weft yarns of different diameters. Even if the diameter of the weft yarn is small, this weft insertion tip can still achieve the weft insertion action well. At the same time, since the diameters of yarn, graphene yarn, and copper wire are necessarily different, the above design also allows this weft insertion tip to adapt to the weft insertion needs of three different types of yarn, graphene yarn, and copper wire.
[0016] In the aforementioned weft insertion tip, the wire clamp can disengage from the weft insertion end to the left around the hinge axis, the upper side of the striped part is inclined to the left and lower to the right, and the anti-slip stripes are provided on the right side of the striped part.
[0017] Since the wire clamp is inserted into the clamping gap from left to right during operation, the striped section design ensures a large contact area between the striped section and the weft thread during clamping, preventing the weft thread from being broken due to insufficient contact area. In particular, graphene and copper wires have relatively poor toughness compared to yarn, and the shearing force generated by an insufficient contact area can easily break or bend the graphene and copper wires without recovery. Therefore, the wire clamp structure described above can increase the stability of this weft insertion head during operation, enabling it to simultaneously adapt to the weft insertion needs of three different wire materials: yarn, graphene wire, and copper wire.
[0018] In the aforementioned weft insertion sword head, the sword head body is provided with a weft guard plate, and there is a thread passage opening between the weft guard plate and the hook. The rear end of the hook and the front end of the guard plate both have guide surfaces that gradually slope forward from left to right.
[0019] The aforementioned weft guard plate can protect the weft insertion end and the weft thread, thereby improving the stability and safety of this weft insertion dart during operation.
[0020] In the aforementioned weft insertion scissor head, a mounting groove for accommodating a wire clamp is provided on the left side wall of the scissor head body. The wire clamp is disposed in the mounting groove, and the bottom of the groove at the front can abut against the wire clamp so that the striped part of the wire clamp is located within the wire clamping gap. The middle part of the mounting groove is hinged to the wire clamp, and a driving part is provided at the rear end of the wire clamp. The driving part is located behind the hinge and protrudes from the left side wall of the scissor head body. The driving part is arc-shaped, and an elastic element for pushing the driving part to move outward is provided in the mounting groove.
[0021] The aforementioned mounting slot design allows the wire clamp to rotate and return smoothly around its axis, thus achieving the wire clamping action. The aforementioned elastic element can be a spring, a spring sheet, etc.
[0022] Compared with the prior art, the technical effects of this utility model are as follows: This invention increases the friction between the wire clamp and the weft by setting anti-slip stripes on the striped part, thereby adapting to the weft insertion needs of three different wire materials: yarn, graphene thread, and copper wire. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0024] Figure 2 This is a cross-sectional view of the present invention.
[0025] Figure 3 This is a perspective view of the wire clamp of this utility model.
[0026] Figure 4 This is a top view of the wire clamp of this utility model.
[0027] In the diagram, 1. Sword head body; 11. Weft guard plate; 12. Thread pass opening; 13. Mounting groove; 2. Weft insertion end; 21. Hook; 211. Hook hole; 212. Thread clamping gap; 3. Thread clamping pliers; 31. Striped part; 311. Anti-slip stripe; 32. Drive part; 4. Elastic element. Detailed Implementation
[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0029] This weft insertion scissor head includes a scissor head body 1, a weft insertion end 2 at the front end of the scissor head body 1, and a horizontally rotatable wire clamp 3 inside the scissor head body 1. The front end of the weft insertion end 2 is bent upward and formed into a hook 21. There is a wire clamping gap 212 between the hook 21 and the upper side of the weft insertion end 2, which can accommodate the front end of the wire clamp 3. The middle part of the wire clamp 3 is hinged to the scissor head body 1. An elastic element 4 is installed at the rear of the scissor head body 1 to drive the wire clamp 3 to rotate around the hinge axis so that the front end of the wire clamp 3 is engaged in the wire clamping gap 212. The rear end of the wire clamp 3 is formed with a driving part 32 protruding from the side wall of the scissor head body 1. The front part of the wire clamp 3 is formed with a flat striped part 31. Several anti-slip stripes 311 are provided on the upper side of the striped part 31. This weft insertion tip increases the friction between the wire clamp 3 and the weft thread by setting anti-slip stripes 311 on the striped part 31, thereby adapting to the weft insertion needs of three different wire materials: yarn, graphene thread and copper wire.
[0030] The front end of the weft insertion end 2 is provided with a hook hole 211, which passes through the weft insertion end 2 from left to right. The rear end of the hook hole 211 is connected to the wire clamping gap 212. The diameter of the hook hole 211 is greater than the height of the front end of the wire clamping gap 212. The height of the wire clamping gap 212 gradually increases from front to back. The distance between the lower side of the hook 21 and the upper side of the wire clamp 3 gradually increases from front to back. After the weft thread is pulled into place, the wire clamp 3 releases the weft thread. Under the action of the pulling force, the end of the weft thread will enter the hook hole 211. The weft insertion end 2 continues to move backward, thereby causing the end of the weft thread to separate from the weft insertion end 2. The design of the hook hole 211 makes it easy for the weft thread to separate from the weft insertion head after the wire clamp 3 is released. The structure is simple and helps to improve the smoothness and stability of the weft insertion action. The cooperation between the clamping gap 212 and the wire clamp 3 allows the weft insertion end 2 to clamp tighter and tighter during the process of pulling the weft thread, firmly fixing the weft thread, thereby adapting to the weft insertion needs of three different wire materials: yarn, graphene thread, and copper wire.
[0031] like Figure 3 and Figure 4As shown, the anti-slip stripes 311 are elongated, with their length direction parallel to the length direction of the wire clamp 3. Several anti-slip stripes 311 are spaced apart along the width direction of the wire clamp 3. The front end of the stripe section 31 is slightly upturned, allowing it to abut against the front end of the hook section 21. The design of the anti-slip stripe 311 increases the frictional force perpendicular to the length direction of the wire clamp 3. Since the weft insertion tip mainly relies on this frictional force to fix the weft yarn, it can greatly increase the frictional force between the weft yarn and the weft insertion end 2. The upturned design of the front end of the stripe section 31 allows the weft insertion tip to adapt to weft yarns of different diameters. Even if the diameter of the weft yarn is small, the weft insertion tip can still achieve the weft insertion action well. At the same time, since the diameters of yarn, graphene yarn, and copper wire are necessarily different, the above design also allows the weft insertion tip to adapt to the weft insertion needs of three different types of yarn, graphene yarn, and copper wire.
[0032] like Figure 1 and Figure 3 As shown, the wire clamp 3 can disengage from the weft insertion end 2 to the left around the hinge axis. The upper side of the striped part 31 is inclined with the left side higher than the right side, and the anti-slip stripe 311 is provided on the right side of the striped part 31. Since the wire clamp 3 is inserted into the wire clamping gap 212 from left to right when working, the design of the striped part 31 can ensure that the striped part 31 has a large contact surface with the weft during the clamping process, avoiding the weft being broken due to the small contact surface. In particular, the toughness of graphene wire and copper wire is relatively poor compared with yarn. The shearing force formed by the small contact surface can easily break or bend the graphene wire and copper wire without recovery. Therefore, the structure of the wire clamp 3 can increase the stability of the weft insertion head when working, so that the weft insertion head can simultaneously adapt to the weft insertion needs of three different wire materials: yarn, graphene wire and copper wire.
[0033] like Figure 1 and Figure 2As shown, a weft guard plate 11 is provided on the sword head body 1. There is a thread passage opening 12 between the weft guard plate 11 and the hook 21. The rear end of the hook 21 and the front end of the guard plate both have guide surfaces that gradually slope forward from left to right. A mounting groove 13 for accommodating a wire clamp 3 is provided on the left side wall of the sword head body 1. The wire clamp 3 is located in the mounting groove 13. The bottom of the groove at the front of the mounting groove 13 can abut against the wire clamp 3 so that the striped part 31 of the wire clamp 3 is located in the wire clamping gap 212. The middle part of the mounting groove 13 is hinged to the wire clamp 3. A driving part 32 is provided at the rear end of the wire clamp 3. The driving part 32 is located on the rear side of the hinge and protrudes from the left side wall of the sword head body 1. The driving part 32 is arc-shaped. An elastic element 4 is provided in the mounting groove 13 to push the driving part 32 to move outward. The aforementioned weft guard plate 11 protects the weft insertion end 2 and the weft thread, thereby improving the stability and safety of the weft insertion head during operation. The design of the aforementioned mounting groove 13 allows the wire clamp 3 to rotate smoothly around the pivot and return to its original position, thus achieving the wire clamping action. The aforementioned elastic element 4 can be a spring, a spring sheet, etc.
[0034] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.
Claims
1. A weft insertion dagger, comprising a dagger body (1), wherein a weft insertion end (2) is provided at the front end of the dagger body (1), and a horizontally rotatable wire clamp (3) is provided inside the dagger body (1). The front end of the weft insertion end (2) is bent upward and formed with a hook (21). A wire clamping gap (212) is provided between the hook (21) and the upper side of the weft insertion end (2) to accommodate the front end of the wire clamp (3). The middle part of the wire clamp (3) is hinged to the dagger body (1). An elastic element (4) is installed at the rear part of the dagger body (1) to drive the wire clamp (3) to rotate around the hinge axis so that the front end of the wire clamp (3) is engaged in the wire clamping gap (212). The rear end of the wire clamp (3) is formed with a driving part (32) protruding from the side wall of the dagger body (1). The dagger body (1) is characterized in that: The front part of the wire clamp (3) is formed with a flat striped part (31), and a number of anti-slip stripes (311) are provided on the upper side of the striped part (31).
2. The weft insertion dagger head according to claim 1, characterized in that: The front end of the weft insertion end (2) is provided with a hook hole (211), which passes through the weft insertion end (2) from left to right. The rear end of the hook hole (211) is connected to the clamping gap (212), and the diameter of the hook hole (211) is greater than the height of the front end of the clamping gap (212).
3. The weft insertion tip according to claim 2, characterized in that: The height of the wire clamping gap (212) gradually increases from front to back, and the distance between the lower side of the hook (21) and the upper side of the wire clamp (3) gradually increases from front to back.
4. The weft insertion dagger head according to claim 1, characterized in that: The anti-slip stripes (311) are long strips, and the length direction of the anti-slip stripes (311) is parallel to the length direction of the wire clamp (3). Several anti-slip stripes (311) are spaced apart along the width direction of the wire clamp (3).
5. The weft insertion dagger head according to claim 4, characterized in that: The front end of the striped part (31) is slightly upturned, and the front end of the striped part (31) can abut against the front end of the hook part (21).
6. A weft insertion dagger head according to any one of claims 1-5, characterized in that: The wire clamp (3) can disengage from the weft insertion end (2) to the left around the hinge axis. The upper side of the striped part (31) is inclined with the left side higher than the right side, and the anti-slip stripe (311) is located on the right side of the striped part (31).
7. The weft insertion dagger head according to claim 6, characterized in that: The sword head body (1) is provided with a weft guard plate (11), and there is a thread passage opening (12) between the weft guard plate (11) and the hook (21). The rear end of the hook (21) and the front end of the guard plate both have guide surfaces that gradually tilt forward from left to right.
8. The weft insertion dagger head according to claim 6, characterized in that: The left side wall of the sword head body (1) is provided with a mounting groove (13) for accommodating a wire clamp (3). The wire clamp (3) is located in the mounting groove (13). The bottom of the groove at the front of the mounting groove (13) can abut against the wire clamp (3) so that the striped part (31) of the wire clamp (3) is located in the wire clamping gap (212). The middle part of the mounting groove (13) is hinged to the wire clamp (3). The rear end of the wire clamp (3) is provided with a driving part (32). The driving part (32) is located on the rear side of the hinge and protrudes from the left side wall of the sword head body (1). The driving part (32) is arc-shaped. The mounting groove (13) is provided with an elastic element (4) that pushes the driving part (32) to move outward.