Active yarn clamping rapier head

Abstract

The utility model discloses an active yarn clamping rapier head which comprises a rapier shell, a reset assembly, a yarn clamping head and a yarn clamping limiting piece, and the yarn clamping limiting piece is fixedly installed at the front end of the rapier shell. The yarn clamping head comprises a connecting part, an abutting part and a clamping part, the front end and the rear end of the connecting part are connected with the clamping part and the abutting part respectively, the connecting part is rotationally connected with the rapier shell, the clamping part movably abuts against the yarn clamping limiting piece, and the clamping part and the yarn clamping limiting piece jointly clamp the end of a workpiece; the reset assembly is installed at the rear end of the rapier shell, and the abutting part abuts against the movable end of the reset assembly. When the abutting part is pressed, the clamping part and the yarn clamping limiting piece are separated from each other; the reset assembly is used for resetting the abutting part, so that the clamping part and the yarn clamping limiting piece clamp the workpiece mutually. According to the scheme, the reset assembly, the yarn clamping head and the yarn clamping limiting piece are matched with one another, and the problem that due to the fact that a traditional yarn feeding rapier head is unstable in clamping, yarn displaces or falls in the clamping process can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of thread clamping sword head, and specifically relates to an active thread clamping sword head. BACKGROUND

[0002] In the textile industry, the thread feeding sword head is one of the core components in the textile machinery, and is mainly responsible for accurately and stably clamping and conveying the yarn during the weaving process, so as to ensure that the yarn can enter the weaving area according to the predetermined path and tension, thereby weaving the fabric with uniform structure and excellent quality.

[0003] The traditional thread feeding sword head often adopts a relatively simple mechanical clamping structure, which is difficult to provide sufficient adaptability and clamping force when facing yarns with different materials, thicknesses or surface characteristics, resulting in displacement or accidental falling of the yarn during high-speed operation or complex weaving process.

[0004] In addition, frequent yarn falling and shutdown adjustment also disrupt the continuity of the production process, reduce the overall production efficiency, and increase the cost of manpower and time. UTILITY MODEL CONTENT

[0005] In view of the above defects, the utility model provides an active thread clamping sword head, which can solve the problem of displacement or falling of the yarn during clamping caused by unstable clamping of the traditional thread feeding sword head through the cooperation of the reset assembly, the thread clamping head and the thread clamping limiting piece.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] An active thread clamping sword head, comprising a sword shell, a reset assembly, a thread clamping head and a thread clamping limiting piece, the thread clamping limiting piece being fixedly installed at the front end of the sword shell;

[0008] The thread clamping head comprises a connecting portion, an abutting portion and a clamping portion, the front and rear ends of the connecting portion are connected to the clamping portion and the abutting portion respectively, the connecting portion is rotationally connected to the sword shell, the clamping portion is movably abutted with the thread clamping limiting piece, and the clamping portion and the thread clamping limiting piece jointly clamp the end of the workpiece;

[0009] The reset assembly is installed at the rear end of the sword shell, the abutting portion is abutted with the movable end of the reset assembly, the clamping portion and the thread clamping limiting piece are separated from each other by pressing the abutting portion, and the reset assembly is used for resetting the abutting portion, so that the clamping portion and the thread clamping limiting piece clamp the workpiece.

[0010] The reset assembly comprises a mounting seat and a spring piece, the mounting seat is rotationally installed at the rear end of the sword shell, the mounting end of the spring piece is fixedly connected to the front end of the mounting seat, and the bottom wall of the abutting portion is abutted with the movable end of the spring piece.

[0011] The weight of the rear end of the mounting seat is greater than the sum of the weight of the front end of the mounting seat and the elastic sheet, so that the front end of the mounting seat is inclined upward in a normal state.

[0012] The reset assembly further comprises a reset limiting piece, a vertical movable through hole is formed in the rear end of the mounting seat, the bottom of the reset limiting piece is fixedly connected with the sword shell through the movable through hole, and the top of the reset limiting piece movably abuts against the rear end of the mounting seat.

[0013] The reset limiting piece is used for limiting the rotation amplitude of the rear end of the mounting seat.

[0014] The yarn clamping limiting piece comprises a clamping bottom and a limiting part, the clamping bottom is horizontally connected with the limiting part, the front end of the limiting part is provided with a first notch recessed to a bottom wall to form a hook structure, and the front end of the sword shell is provided with a second notch recessed to a bottom wall to form a hook structure.

[0015] The top of the clamping bottom is provided with a buffer pad, and the bottom wall of the clamping part movably abuts against the buffer pad.

[0016] The clamping part comprises a clamping long arm and a clamping short arm, the rear end of the clamping long arm is fixedly connected with the connecting part, the front end of the clamping long arm is fixedly connected with the front end of the clamping short arm, the clamping long arm and the clamping short arm are arranged in an upper-lower direction and a left-right direction, the limiting part is located between the clamping long arm and the clamping short arm, and the clamping short arm clamps the workpiece together with the clamping bottom.

[0017] The clamping long arm is provided with a plurality of limiting blocks, and the side wall of the limiting block abuts against the side wall of the limiting part.

[0018] The rear end bottom of the clamping short arm is provided with a pressing block, and the bottom wall of the pressing block movably abuts against the rear end of the clamping bottom.

[0019] The technical scheme of the utility model can have the following beneficial effects:

[0020] 1. Through the cooperation of the reset assembly, the yarn clamping head and the yarn clamping limiting piece, the problem that the traditional yarn feeding sword head clamping is unstable and causes displacement or falling of the yarn during clamping can be solved.

[0021] 2, when the staff presses the abutment, the abutment is deformed downward to press the spring sheet, and the rear end of the spring sheet drives the front end of the mounting seat to move downward together. When the staff releases the abutment, the rear end of the mounting seat moves downward, which can preliminarily drive the spring sheet to move upward, and the spring sheet restores the deformation itself, further drives the abutment to move upward for resetting, and further drives the clamping part to reset accurately, so that the clamping part and the yarn clamping limiting piece are tightly matched to clamp the workpiece. Therefore, the abutment is quickly reset under the double action force, the spring sheet is effectively prevented from weakening after long-term use, and the clamping stability of the automatic yarn clamping sword head is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a schematic view of an automatic yarn clamping sword head according to one embodiment of the present application;

[0023] Fig. 2 is an exploded view of an automatic yarn clamping sword head according to one embodiment of the present application;

[0024] Fig. 3 is a schematic view of a resetting assembly and a yarn clamping limiting piece according to one embodiment of the present application;

[0025] In the drawings: 1, sword shell; 10, second notch; 2, resetting assembly; 21, mounting seat; 22, spring sheet; 23, resetting limiting piece; 3, yarn clamping head; 31, connecting part; 32, abutment; 321, clamping long arm; 322, clamping short arm; 323, limiting block; 324, pressing block; 33, clamping part; 4, yarn clamping limiting piece; 40, first notch; 41, clamping bottom; 42, limiting part; 43, buffer pad. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.

[0027] In the description of the present application, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0029] In the description of the utility model, it is to be explained that, unless there is explicit stipulation and limitation, the term ''installation'', ''splicing'', ''connection'' should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be direct connection, also can be indirectly connected through intermediate medium, it can be the communication inside two elements, for the ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0030] The utility model discloses an active yarn clamping sword head. Figs. 1 to 3 The utility model discloses an active yarn clamping sword head.

[0031] An active yarn clamping sword head, including sword shell 1, reset component 2, yarn clamping head 3 and yarn clamping stopper 4, the front end of sword shell 1 is fixedly installed with yarn clamping stopper 4;

[0032] Yarn clamping head 3 includes connecting portion 31, abutting portion 32 and clamping portion 33, and the front and rear ends of connecting portion 31 are connected with clamping portion 33 and abutting portion 32 respectively, connecting portion 31 is rotationally connected with sword shell 1, clamping portion 33 is movably abutted with yarn clamping stopper 4, and clamping portion 33 and yarn clamping stopper 4 jointly clamp the end of workpiece;

[0033] Reset component 2 is installed at the rear end of sword shell 1, and abutting portion 32 is abutted with the movable end of reset component 2, pressing abutting portion 32, clamping portion 33 and yarn clamping stopper 4 are separated from each other, and reset component 2 is used for resetting abutting portion 32, so that clamping portion 33 and yarn clamping stopper 4 clamp workpiece.

[0034] Connecting portion 31, abutting portion 32 and clamping portion 33 of yarn clamping head 3 work cooperatively, connecting portion 31 serves as an intermediate pivot, stably links front and rear components, and ensures effective transmission of force. Therefore, when the staff presses abutting portion 32 downward, clamping portion 33 moves upward and is separated from yarn clamping stopper 4, and the loading and unloading steps of yarn or workpiece are easily completed, which is simple and labor-saving and greatly improves work efficiency.

[0035] At this time, the workpiece is placed on yarn clamping stopper 4, and then the staff releases abutting portion 32. Reset component 2 quickly plays a role, resets abutting portion 32, drives abutting portion 32 to move upward, makes clamping portion 33 move downward, and clamps workpiece together with yarn clamping stopper 4, so that the clamping work of workpiece is completed.

[0036] The utility model discloses an active yarn clamping sword head, including sword shell 1, reset component 2, yarn clamping head 3 and yarn clamping stopper 4, the front end of sword shell 1 is fixedly installed with yarn clamping stopper 4;

[0037] The reset assembly 2 comprises a mounting seat 21 and an elastic sheet 22, the mounting seat 21 is rotationally mounted at the rear end of the sword shell 1, the mounting end of the elastic sheet 22 is fixedly connected with the front end of the mounting seat 21, and the bottom wall of the abutting part 32 abuts against the movable end of the elastic sheet 22.

[0038] The rear end of the mounting seat 21 has a weight greater than the sum of the weight of the front end of the mounting seat 21 and the elastic sheet 22, so that the front end of the mounting seat 21 is upwardly inclined in a normal state.

[0039] In a normal state, the heavier rear end is downwardly movable, so that the mounting seat 21 is in an inclined state, at this time, the front end of the mounting seat 21 and the elastic sheet 22 are both in a state of being upwardly curved, thereby ensuring that the elastic sheet 22 is always in an optimal standby state and is ready to respond to the clamping action demand at any time.

[0040] When the staff presses the abutting part 32, the abutting part 32 is downwardly pressed against the elastic sheet 22 to be deformed, and the elastic sheet 22 accumulates elastic potential energy, and the rear end of the elastic sheet 22 drives the front end of the mounting seat 21 to move downwardly together. When the staff releases the abutting part 32, the rear end of the mounting seat 21 is downwardly movable to preliminarily drive the elastic sheet 22 to move upwardly, and the elastic sheet 22 restores the deformation by itself to further drive the abutting part 32 to move upwardly to reset, thereby driving the clamping part 33 to accurately reset, and ensuring that the clamping part 33 is tightly matched with the yarn clamping limiting part 4 to clamp the workpiece. Therefore, the abutting part 32 is quickly reset under the double action force, effectively reduces the situation that the elastic sheet 22 is weakened in elasticity after long-term use, and guarantees the clamping stability of the active yarn clamping sword head of the scheme.

[0041] The reset assembly 2 further comprises a reset limiting part 23, the rear end of the mounting seat 21 is provided with a vertical movable through hole, the bottom of the reset limiting part 23 passes through the movable through hole and is fixedly connected with the sword shell 1, and the top of the reset limiting part 23 movably abuts against the rear end of the mounting seat 21.

[0042] The reset limiting part 23 is used for limiting the rotation amplitude of the rear end of the mounting seat 21.

[0043] In daily production, when the mounting seat 21 is rotated by pressing the abutting part 32, the reset limiting part 23 abuts against the rear end of the mounting seat 21, thereby limiting the rotation amplitude of the mounting seat 21 when the mounting seat 21 moves upwardly, avoiding that the mounting seat 21 is excessively rotated to cause the elastic sheet 22 to be excessively deformed, and avoiding that the elastic sheet 22 is permanently damaged.

[0044] When the active yarn clamping head of this solution needs to clamp workpieces of different thicknesses, the reset limiting component 23 of different heights and the spring piece 22 of different rigidities can be replaced. By replacing the reset limiting component 23 of different heights in the active yarn clamping head, the rotation amplitude of the mounting base 21 can be adjusted, thereby adapting to the spring piece 22 of different rigidities, thus expanding the application range of the active yarn clamping head of this solution.

[0045] The yarn clamping limiting member 4 includes a clamping bottom 41 and a limiting part 42. The clamping bottom 41 is horizontally connected to the sword shell 1 and the limiting part 42. The front end of the limiting part 42 is provided with a first notch 40 that is recessed into the bottom wall to form a hook structure. The front end of the sword shell 1 is provided with a second notch 10 that is recessed into the bottom wall to form a hook structure.

[0046] The top of the clamping bottom 41 is provided with a buffer pad 43, and the bottom wall of the clamping part 33 is in movable contact with the buffer pad 43.

[0047] The limiting part 42 has a hook structure recessed into the bottom wall at its front end, and the sword shell 1 also has a hook structure at its front end. This allows the limiting part 42 and the sword shell 1 to firmly hold the workpiece from both sides, effectively preventing displacement of the workpiece during clamping. Even in high-speed, high-intensity operating environments, it ensures that the yarn or workpiece remains in a precise processing position, greatly reducing the defect rate and improving production quality.

[0048] It is worth noting that the buffer pad 43 is preferably made of rubber. When the clamping part 33 works in conjunction with the yarn clamping limiter 4, the buffer pad 43 can absorb the impact force generated during the clamping process, preventing damage to the clamping part 33 and the clamping bottom 41 due to hard collisions, thus extending the service life of the equipment. In addition, for some delicate yarns or fine workpieces, the soft buffer pad 43 can minimize scratches and compression damage to their surfaces, meeting the production needs of high-end products.

[0049] The clamping part 33 includes a clamping long arm 321 and a clamping short arm 322. The rear end of the clamping long arm 321 is fixedly connected to the connecting part 31, and the front end of the clamping long arm 321 is fixedly connected to the front end of the clamping short arm 322. The clamping long arm 321 and the clamping short arm 322 are staggered in both the vertical and horizontal directions. The limiting part 42 is located between the clamping long arm 321 and the clamping short arm 322. The clamping short arm 322 and the clamping bottom 41 jointly clamp the workpiece.

[0050] The rear end of the clamping long arm 321 is connected to the connecting part 31, and the front end of the clamping long arm 321 is connected to the front end of the clamping short arm 322, so that the clamping long arm 321 can drive the clamping short arm 322 to move, ensuring that the clamping short arm 322 can clamp or release the workpiece.

[0051] The clamping long arm 321 and the clamping short arm 322 are staggered, which can reduce the mutual interference of the clamping long arm 321 and the yarn clamping limiting piece 4 during movement, thereby improving the clamping stability. Moreover, the limiting part 42 is located between the clamping long arm 321 and the clamping short arm 322, and the limiting part 42 can play a limiting role, further restricting the relative displacement of the clamping long arm 321 and the clamping short arm 322, thereby protecting the clamping mechanism from damage and improving the stability of the active yarn clamping sword head of the scheme.

[0052] The clamping long arm 321 is provided with a plurality of limiting blocks 323, and the side wall of the limiting block 323 abuts against the side wall of the limiting part 42.

[0053] Through the mutual abutment of the limiting block 323 and the limiting part 42, the clamping long arm 321 can be prevented from moving in the direction of the yarn clamping limiting piece 4 due to vibration or external force during work, which can cause the clamping short arm 322 to fail to clamp the workpiece, thereby further improving the clamping stability of the active yarn clamping sword head of the scheme.

[0054] The rear end bottom of the clamping short arm 322 is provided with a pressing block 324, and the bottom wall of the pressing block 324 abuts against the rear end of the clamping bottom 41.

[0055] When the active yarn clamping sword head clamps the workpiece, the front end of the clamping short arm 322 and the front end of the clamping bottom 41 first form a first close contact defense line, which bears the main clamping task; and the pressing block 324 at the rear end abuts against the rear end of the clamping bottom 41, which serves as a supplementary force to further stabilize the workpiece from the rear. This front and rear echoing clamping mode effectively prevents the workpiece from shaking and displacing due to uneven stress, ensures that the workpiece is always in a precise machining position, greatly improves the stability of the production process, and reduces the generation of defective products.

[0056] The technical principle of the utility model is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the utility model, and cannot be interpreted as limiting the protection scope of the utility model in any way. Based on the explanation here, those skilled in the art can think of other specific embodiments of the utility model without creative labor, and these embodiments will fall within the protection scope of the utility model.

Claims

1. An active thread sword, characterized in that, It comprises a sword shell, a reset component, a yarn clamping head and a yarn clamping limiting piece, the front end of the sword shell is fixedly installed with the yarn clamping limiting piece; The yarn clamping head comprises a connecting part, an abutting part and a clamping part, the front and rear ends of the connecting part are connected with the clamping part and the abutting part respectively, the connecting part is rotationally connected with the sword shell, the clamping part is movably abutted with the yarn clamping limiting piece, and the clamping part and the yarn clamping limiting piece jointly clamp the end of the workpiece. The reset component is installed at the rear end of the sword shell, the abutting part is abutted with the movable end of the reset component, the clamping part and the yarn clamping limiting piece are separated from each other by pressing the abutting part, and the reset component is used for resetting the abutting part, so that the clamping part and the yarn clamping limiting piece clamp the workpiece.

2. A self-acting thread gripper sword head according to claim 1, characterized in that The reset component comprises a mounting seat and an elastic sheet, the mounting seat is rotationally installed at the rear end of the sword shell, the mounting end of the elastic sheet is fixedly connected with the front end of the mounting seat, and the bottom wall of the abutting part is abutted with the movable end of the elastic sheet. The weight of the rear end of the mounting seat is greater than the sum of the weights of the front end of the mounting seat and the elastic sheet, so that the front end of the mounting seat is inclined upward in a normal state.

3. A powered thread clipping blade head according to claim 2, wherein, The reset component further comprises a reset limiting piece, a vertical movable through hole is formed in the rear end of the mounting seat, the bottom of the reset limiting piece is fixedly connected with the sword shell through the movable through hole, and the top of the reset limiting piece is movably abutted with the rear end of the mounting seat. The reset limiting piece is used for limiting the rotation amplitude of the rear end of the mounting seat.

4. The active thread sword according to claim 1, wherein, The yarn clamping limiting piece comprises a clamping bottom and a limiting part, the clamping bottom is horizontally connected with the sword shell and the limiting part, and the front end of the limiting part is provided with a first notch recessed to the bottom wall to form a hook structure. The front end of the sword shell is provided with a second notch recessed to the bottom wall to form a hook structure. The top of the clamping bottom is provided with a buffer pad, and the bottom wall of the clamping part is movably abutted with the buffer pad.

5. A powered gripper sword according to claim 4, wherein, The clamping part comprises a clamping long arm and a clamping short arm, the rear end of the clamping long arm is fixedly connected with the connecting part, the front end of the clamping long arm is fixedly connected with the front end of the clamping short arm, the clamping long arm and the clamping short arm are arranged in the up-down direction and the left-right direction, the limiting part is located between the clamping long arm and the clamping short arm, and the clamping short arm and the clamping bottom jointly clamp the workpiece.

6. A powered gripper sword head according to claim 5, wherein, The clamping long arm is provided with a plurality of limiting blocks, and the side wall of the limiting block is abutted with the side wall of the limiting part.

7. A powered thread clipping blade head according to claim 5 wherein, The rear end bottom of the clamping short arm is provided with a pressing block, and the bottom wall of the pressing block is movably abutted with the rear end of the clamping bottom.

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