Rotary clamping device of yarn twisting instrument

Abstract

The utility model discloses a rotary clamp holder of a yarn twist instrument, which belongs to the field of twist testers and comprises a connector and a clamping mechanism, the connector is mounted on a rotary head of the yarn twist instrument, the clamping mechanism and the connector are fixedly mounted, and the clamping mechanism comprises an extension rod fixedly mounted on the connector. A connector lug is fixedly installed at the end, away from the connector, of the extension rod, a wire penetrating cavity is formed in the position, facing the center, of the outer side wall of the connector lug, and a pressing cavity communicating with the wire penetrating cavity in an n shape is formed in the outer portion of the side wall, on the different face of the wire penetrating cavity, of the connector lug. According to the rotary clamp holder, yarn penetrates from the side edge of the threading cavity, then a thread end is pulled from the receding groove, the thread end is wound upwards into the pressing cavity, the yarn is flatly placed in the pressing cavity, then the pressing cover is pushed, the pressing cover slides on the extension rod, the pressing strip slides into the pressing cavity, the yarn is extruded and fastened, manual winding and fixing are not needed, and the rotary clamp holder is convenient and fast to use.

Description

Technical Field

[0001] The utility model relates to the field of twist testers, in particular to a rotary clamper for a yarn twist tester. Background Art

[0002] The yarn twist meter is an instrument for measuring the yarn twist and its related technical indicators. It is widely used in the central laboratories of textile enterprises, testing institutions, quality inspection and law enforcement units and scientific research institutions. After the revision of the international and national standards for testing twist, the test gauge of the test sample was changed from 250mm to 500mm, and the test procedure was modified such as the allowable elongation determined by the preliminary test. Therefore, the requirements for the yarn twist meter have also been improved. The yarn twist meter has two clamps: a rotating clamp and a moving clamp. Before the operator tests, the sample yarn passes through the yarn guide frame and is clamped on the two clamps after the tension is controlled according to the standard requirements. During the test, the effective test sample length (referred to as the gauge: the distance between the two clamps) is between the jaws of the two clamps.

[0003] A Chinese utility model patent with publication number CN212540404U discloses a rotary clamp for a twist tester, which strengthens the tightness of the yarn bundle by passing the yarn through a wire groove and then winding it on a wire pressing plate, thereby achieving the purpose of preventing the yarn from loosening and detaching during testing. However, in actual use, the yarn needs to be stretched and then manually wound on the wire pressing plate, which wastes the wire bundle and is inefficient.

[0004] Therefore, a yarn twist meter rotary clamp is provided to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a yarn twist meter rotary clamp, aiming to solve the problem that the existing rotary clamp proposed in the background technology needs to stretch the yarn and then manually wind it on a wire pressing plate during actual use, which wastes the wire bundle and is inefficient.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a yarn twist meter rotary clamp, comprising a connector mounted on a rotating head of the yarn twist meter and a clamping mechanism fixedly mounted on the connector:

[0009] In order to more conveniently tighten the yarn, the clamping mechanism includes an extension rod fixedly mounted on the connecting head, a wiring head is fixedly mounted on the end of the extension rod away from the connecting head, a threading cavity is opened on the outer wall of the wiring head towards the center position, and a pressing cavity connected to the threading cavity in a "J" shape is opened on the outside of the side wall of the wiring head which is not on the same surface as the threading cavity, and a yield groove is opened on the end of the extension rod close to the wiring head, a pressing cover matched with the outer wall of the wiring head is sleeved on the outer wall of the extension rod, and a pressing strip matched with the pressing cavity is fixedly mounted on the inner wall of the pressing cover. The yarn is inserted from the side of the threading cavity, and then the thread head is pulled from the yield groove so that the thread head is wound upward into the pressing cavity, the yarn is placed flat in the pressing cavity, and then the pressing cover is pushed, and the pressing cover slides on the extension rod, so that the pressing strip slides into the pressing cavity, and the yarn is squeezed and tightened, without the need for manual winding and fixing, which is convenient and quick.

[0010] Preferably, in order to prevent the wiring harness from accidentally withdrawing from between the pressing cavity and the pressing strip during the operation of the equipment, the pressing strip is slidably connected to the pressing cavity on the terminal head, and a plurality of anti-retraction grooves with openings facing the terminal head are provided at the bottom of the pressing strip. Through the reverse anti-retraction groove setting, the wiring harness is blocked by the anti-retraction groove when it is withdrawn under tension, thereby making it difficult to disengage.

[0011] Preferably, in order to facilitate the alignment of the pressing strip and the pressing cavity, an alignment groove is provided on the outer side wall of the extension rod, and an alignment slider compatible with the alignment groove is fixedly installed on the pressing cover at the contact surface with the extension rod. The pressing cover is restricted by the alignment groove and the alignment slider during the sliding process, so that the pressing strip is always arranged opposite to the pressing cavity, ensuring that the pressing strip slides stably into the pressing cavity, which is convenient and quick.

[0012] Preferably, in order to further tighten the wiring harness in the threading cavity, an elastic clip with an open lower portion is fixedly installed on the inner side wall of the threading cavity, and the end of the elastic clip that is not fixed to the threading cavity is arranged toward the center of the threading cavity and is provided with an arc bent piece that fits tightly with the center of the threading cavity. When wiring, the yarn is passed from the side through the gap between the threading cavity and the elastic clip into the threading cavity without any obstruction, and the operation is convenient. The passed yarn will move toward the center of the threading cavity as it is pulled upward into the pressing cavity, and thereby be pressed against the side wall of the threading cavity by the arc-shaped elastic clip, making it more secure and the wiring harness less likely to deviate.

[0013] Preferably, in order to be able to cut off excess thread ends, the rotary clamp also includes a tangent mechanism, which includes a ring installed on the pressing cover toward one end of the terminal head, and an installation opening is opened on the ring at the position corresponding to the pressing cavity, and a blade is fixedly installed inside the installation opening. After the ring is sleeved on the pressing cover, the ring is sleeved on the terminal head along with the pressing cover, and the blade is aligned with the position of the pressing cavity to pull the excess thread ends toward the position of the blade, thereby directly cutting off the excess thread ends, avoiding affecting the operation of other machines, preventing accidents caused by entanglement, and being safer and more reliable.

[0014] Preferably, in order to quickly install the ring, an interface ring that is plugged into the inner wall of the press-fit cover is fixedly installed on the inner wall of the ring close to the press-fit cover, and a receiving groove that is adapted to the press-fit strip is opened on the interface ring. At least three evenly arranged elastic sheets that are used to contact the inner wall of the press-fit cover for reinforcement are fixedly installed on the outer wall of the interface ring. The side of the ring with the interface ring is facing the end of the press-fit cover, the receiving groove is aligned with the press-fit strip, and then the interface ring is pushed into the press-fit cover so that the elastic sheet is clamped into the press-fit cover to ensure the tightness of the connection and convenient and quick disassembly.

[0015] (III) Beneficial effects

[0016] The rotary clamp is used to pass the yarn from the side of the threading cavity, and then the thread end is pulled from the give way groove to make the thread end wind upward into the pressing cavity, the yarn is placed flat in the pressing cavity, and then the pressing cover is pushed. The pressing cover slides on the extension rod, so that the pressing strip slides into the pressing cavity, and the yarn is squeezed and tightened. There is no need for manual winding and fixing, which is convenient and quick.

[0017] The rotary clamp sets the ring on the pressing cover, and then the ring is set on the wire head along with the pressing cover. The blade is aligned with the position of the pressing cavity, and the excess wire head is pulled toward the position of the blade, so that the excess wire head is directly cut off, avoiding affecting the operation of other machines and preventing accidents caused by wire entanglement, which is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front structural schematic diagram of a rotary clamp of a yarn twist meter;

[0019] Figure 2 It is a schematic diagram of the back structure of a rotary clamp of a yarn twist meter;

[0020] Figure 3 It is a partial structural schematic diagram of a rotary clamp of a yarn twist meter;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle;

[0022] Figure 5A schematic diagram of the cross-sectional structure of a wiring head of a rotary clamp of a yarn twist meter;

[0023] Figure 6 The present invention is a schematic diagram of the structure of the tangent mechanism of a rotary clamp of a yarn twist meter.

[0024] In the figure:

[0025] 1. Connector; 2. Clamping mechanism; 21. Extension rod; 22. Wiring head; 23. Threading cavity; 24. Pressing cavity; 25. Displacement groove; 26. Pressing cover; 27. Pressing strip; 28. Anti-retraction groove; 29. ​​Alignment slide groove; 210. Alignment slider; 211. Elastic clip; 3. Wire cutting mechanism; 31. Ring; 32. Mounting port; 33. Blade; 34. Interface ring; 35. Accommodation groove; 36. Elastic sheet. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] This embodiment provides a yarn twist meter rotating clamp, such as Figure 1-6 As shown, it includes a connector 1 installed on the rotating head of the yarn twist meter and a clamping mechanism 2 fixedly installed with the connector 1:

[0029] The clamping mechanism 2 includes an extension rod 21 fixedly mounted on the connector 1, a terminal head 22 being fixedly mounted on one end of the extension rod 21 away from the connector 1, a threading cavity 23 being provided on the outer wall of the terminal head 22 toward the center position, a pressing cavity 24 being connected to the threading cavity 23 in a "J" shape and being provided on the outer side of the side wall of the terminal head 22 which is not on the same side as the threading cavity 23, a giving way groove 25 being provided on one end of the extension rod 21 close to the terminal head 22, a pressing cover 26 being adapted to the outer wall of the terminal head 22 being sleeved on the outer wall of the extension rod 21, a pressing strip 27 being adapted to the pressing cavity 24 being fixedly mounted on the inner wall of the pressing cover 26.

[0030] When in use, the yarn is passed through the threading cavity 23 from the side, and then the thread end is pulled from the give way groove 25 so that the thread end is wound upward into the pressing cavity 24, the yarn is placed flat in the pressing cavity 24, and then the pressing cover 26 is pushed. The pressing cover 26 slides on the extension rod 21, so that the pressing strip 27 slides into the pressing cavity 24, and the yarn is squeezed and tightened. There is no need to manually wind and fix it, which is convenient and fast. When withdrawing the line, push the pressing cover 26 backward to make the pressing strip 27 disengage from the pressing cavity 24, and then pull the wire harness to disengage, which is convenient and fast.

[0031] The pressing strip 27 is slidably connected to the pressing cavity 24 on the terminal head 22, and a plurality of anti-retraction grooves 28 are provided at the bottom of the pressing strip 27 with openings facing the terminal head 22. When in use, the wire harness is blocked by the anti-retraction grooves 28 when it is pulled outward, making it difficult to disengage.

[0032] Furthermore, an alignment slot 29 is provided on the outer side wall of the extension rod 21, and an alignment slider 210 adapted to the alignment slot 29 is fixedly installed on the contact surface of the press cover 26 with the extension rod 21. When in use, the press cover 26 is pushed, and the alignment slider 210 on the press cover 26 slides in the alignment slot 29 on the extension rod 21, thereby ensuring that no deflection occurs during sliding, so that the press strip 27 is accurately pressed into the press cavity 24, which is convenient and quick.

[0033] Furthermore, an elastic clip 211 with an open lower portion is fixedly mounted on the inner side wall of the threading cavity 23. The end of the elastic clip 211 that is not fixed to the threading cavity 23 is arranged toward the center of the threading cavity 23 and is provided with an arc bent piece that fits tightly with the center of the threading cavity 23.

[0034] When in use, the yarn is passed into the threading cavity 23 from the side through the gap between the threading cavity 23 and the elastic clip 211. There is no obstruction and the operation is convenient. The passed yarn moves toward the center of the threading cavity 23 as it is pulled upward into the pressing cavity 24, and is thereby pressed against the side wall of the threading cavity 23 by the arc-shaped elastic clip 211, making it more secure and the wiring harness less likely to deviate.

[0035] Example 2

[0036] Different from Example 1, Figure 1 , Figure 2 and Figure 6 As shown, the rotary clamp also includes a tangent mechanism 3, which includes a ring 31 installed on the pressing cover 26 toward one end of the terminal head 22, and an installation opening 32 is opened on the ring 31 at a position corresponding to the pressing cavity 24, and a blade 33 is fixedly installed inside the installation opening 32.

[0037] When in use, after the ring 31 is sleeved on the pressing cover 26, the ring 31 is sleeved on the wiring head 22 along with the pressing cover 26, and the blade 33 is aligned with the position of the pressing cavity 24, and the excess wire ends are pulled toward the position of the blade 33, and the excess wire ends are directly cut off to avoid affecting the operation of other machines and preventing accidents caused by entanglement of the wires, which is safer and more reliable.

[0038] Furthermore, an interface ring 34 that is plugged into the inner wall of the press-fit cover 26 is fixedly installed on the inner wall of the ring 31 near the end of the press-fit cover 26, and a receiving groove 35 that is adapted to the press-fit strip 27 is provided on the interface ring 34. At least three evenly arranged elastic sheets 36 that are used to contact the inner wall of the press-fit cover 26 for reinforcement are fixedly installed on the outer wall of the interface ring 34.

[0039] When in use, the side of the ring 31 with the interface ring 34 is facing the end of the pressing cover 26, the receiving groove 35 is aligned with the pressing strip 27, and then the interface ring 34 is pushed into the pressing cover 26, so that the elastic sheet 36 is clamped into the pressing cover 26, ensuring the tightness of the connection and convenient and quick disassembly.

[0040] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A yarn twist meter rotary clamp, comprising a connector (1) mounted on a rotating head of the yarn twist meter and a clamping mechanism (2) fixedly mounted on the connector (1), characterized in that: The clamping mechanism (2) comprises an extension rod (21) fixedly mounted on the connector (1); a terminal head (22) is fixedly mounted on one end of the extension rod (21) away from the connector (1); a threading cavity (23) is provided on the outer wall of the terminal head (22) towards the center; a pressing cavity (24) connected to the threading cavity (23) in a "J" shape is provided on the outer side of the side wall of the terminal head (22) which is not on the same plane as the threading cavity (23); a clearance groove (25) is provided on one end of the extension rod (21) close to the terminal head (22); a pressing cover (26) matched with the outer wall of the terminal head (22) is sleeved on the outer wall of the extension rod (21); a pressing strip (27) matched with the pressing cavity (24) is fixedly mounted on the inner wall of the pressing cover (26).

2. A yarn twist meter rotary clamp according to claim 1, characterized in that: The pressing strip (27) is slidably connected to the pressing cavity (24) on the wiring head (22), and a plurality of anti-retraction grooves (28) are provided at the bottom of the pressing strip (27) and are opened toward the wiring head (22).

3. The yarn twist meter rotary clamp according to claim 1, characterized in that: An alignment slot (29) is provided on the outer side wall of the extension rod (21), and an alignment slider (210) adapted to the alignment slot (29) is fixedly mounted on the contact surface of the press-fit cover (26) with the extension rod (21).

4. The yarn twist meter rotary clamp according to claim 1, characterized in that: An elastic clip (211) with an open lower portion is fixedly mounted on the inner side wall of the threading cavity (23); an end of the elastic clip (211) not fixed to the threading cavity (23) is arranged toward the center of the threading cavity (23) and is provided with an arc bent piece that fits tightly with the center of the threading cavity (23).

5. The yarn twist meter rotary clamp according to claim 1, characterized in that: The rotary clamp also includes a tangent mechanism (3), the tangent mechanism (3) including a ring (31) mounted on the pressing cover (26) and facing one end of the terminal head (22), a mounting opening (32) being provided on the ring (31) at a position corresponding to the pressing cavity (24), and a blade (33) being fixedly mounted inside the mounting opening (32).

6. A yarn twist meter rotary clamp according to claim 5, characterized in that: An interface ring (34) is fixedly mounted on the inner wall of the end of the ring (31) close to the pressing cover (26) and is plugged into the inner wall of the pressing cover (26). The interface ring (34) is provided with a receiving groove (35) adapted to the pressing strip (27). At least three uniformly arranged elastic sheets (36) are fixedly mounted on the outer wall of the interface ring (34) and are used to contact the inner wall of the pressing cover (26) for reinforcement.

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