CN118065044A - Tension adjusting device and warp knitting machine - Google Patents

Abstract

The invention discloses a tension adjusting device and a warp knitting machine, which relate to the technical field of textile and are used for solving the problem that the production cost of yarns is increased due to the fact that tension elements made of various different materials are reserved, and the tension adjusting cost of the yarns is increased. The tension adjustment device includes: guide piece, honeycomb duct and power structure. Two adjacent guide members are arranged at intervals, and the guide members are used for guiding the transmission of the wire rods. The honeycomb duct has the air outlet, and the honeycomb duct is located between two adjacent guides, and the air outlet is towards the wire rod. The power structure is communicated with the connecting end of the guide pipe, and the power structure is used for providing wind pressure for the air outlet so that wires positioned between two adjacent guide pieces move in a direction away from the guide pipe. The invention also provides a warp knitting machine, which comprises the tension adjusting device.

Description

Tension adjusting device and warp knitting machine

Technical Field

The invention relates to the technical field of textile, in particular to a tension adjusting device and a warp knitting machine.

Background

Currently, yarns are commonly operated with warp knitting machines to form knitted fabrics. In the weaving process of the warp knitting machine, warp tension fluctuation is extremely easy to be caused due to the difference of yarn consumption and yarn feeding amount during the loop forming and the swing of a guide bar or a needle bed. When the tension fluctuation of the warp yarn is too large, the problems of yarn breakage, uneven loops and the like are easily caused, and the quality and the production efficiency of the product are further affected.

In the prior art, it is often necessary to use yarn tensioning devices to obtain the stable yarn tensioning force required for braiding. But because of the different speeds of the warp knitting machine, the stiffness and natural frequency requirements of the tension elements in the yarn tensioning device are different. Therefore, it is often necessary to replace tension elements of different materials according to the warp knitting machine, and it is further necessary to prepare tension elements of a plurality of different materials.

Based on this, since tension elements of various materials are provided, the cost of adjusting the tension of the yarn increases, and the production cost of the yarn increases.

Disclosure of Invention

The invention aims to provide a tension adjusting device and a warp knitting machine, which are used for reducing the tension adjusting cost of yarns so as to reduce the production cost of the yarns.

In order to achieve the above object, in a first aspect, the present invention provides a tension adjusting apparatus. The tension adjusting device comprises: guide piece, honeycomb duct and power structure. Two adjacent guide members are arranged at intervals, and the guide members are used for guiding the transmission of the wire rods. The honeycomb duct has the air outlet, and the honeycomb duct is located between two adjacent guides, and the air outlet is towards the wire rod. The power structure is communicated with the connecting end of the guide pipe, and the power structure is used for providing wind pressure for the air outlet so that wires positioned between two adjacent guide pieces move in a direction away from the guide pipe.

Compared with the prior art, in the tension adjusting device provided by the invention, the power structure is used for providing wind pressure for the air outlet so that the wire between two adjacent guide pieces moves in a direction away from the guide pipe. At this time, the wire rod can be displaced along the wind pressure direction, and further tensioning of the wire rod can be achieved. Further, since the wind pressure near the air outlet is the greatest, the wind pressure gradually decays as the wind pressure is continuously far away from the air outlet. Therefore, the wind pressure applied to the wire can be adjusted only by adjusting the distance between the air outlet and the wire, and further the controllable adjustment of the tension of the wire is realized. In summary, in the present invention, there is no need to provide the tension element in the prior art, so that the situation that the rigidity and natural frequency of the tension element do not meet the requirements of the warp knitting machine does not occur. Based on the above, the invention can realize controllable adjustment of the tension of the wire rod without changing the tension element with the material meeting the requirement according to the speed of the warp knitting machine, and further, the invention does not need to reserve tension elements with various different materials. At this time, the tension adjustment cost of the yarn can be reduced, and the production cost of the yarn can be further reduced.

In one implementation, the direction of wind pressure at the air outlet is perpendicular to the length direction of the wire.

In one implementation, the draft tube is located at the center of two adjacent guides.

In one implementation, when the flow guide pipe is provided with a plurality of air outlets, the air outlets are distributed in a straight line along the length direction of the flow guide pipe; and/or the sizes of the air outlets are the same or different.

In one implementation, the power structure includes a blower.

In one embodiment, two adjacent guides are guided and supported on both sides of the wire.

In one implementation, the tensioning device further comprises a pressure adjustment component. The pressure regulating component is arranged on the flow guide pipe and used for regulating the wind pressure at the air outlet.

In one implementation, when the tension adjusting device includes a plurality of flow guiding pipes, the flow guiding pipes are connected in parallel, and the connection ends of the flow guiding pipes are all communicated with the power structure.

In one implementation, the tension adjustment device further includes a plurality of pressure adjustment members. Each pressure regulating part is correspondingly arranged on each guide pipe and is used for regulating the wind pressure at the air outlet.

In one implementation, the tension adjustment device further includes: tension sensor and controller. The tension sensor is arranged on the transmission path of the wire rod and is used for detecting the tension of the wire rod. The controller is electrically connected with the power structure and the tension sensor, and the controller is used for controlling the output power of the power structure according to the tension detected by the tension sensor.

In a second aspect, the invention also provides a warp knitting machine, which comprises the tension adjusting device.

Compared with the prior art, the warp knitting machine has the advantages that the beneficial effects of the warp knitting machine are the same as those of the tension adjusting device in the technical scheme, and the description is omitted here.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic diagram showing the relative positional relationship between a first tension adjusting device and a wire in an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1 in an embodiment of the invention;

FIG. 3 is a schematic view of a second tensioning device according to an embodiment of the present invention;

FIG. 4 is a schematic view showing a part of the structure of a warp knitting machine according to the embodiment of the present invention.

Reference numerals:

1-a guiding piece, 2-a guiding pipe and 20-an air outlet,

3-Power structure, 4-pressure regulating component, 5-wire rod,

50-Initial state wire rod, 51-adjusted wire rod and 6-tension adjusting device;

7-tension sensor, 8-controller, 9-control system.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition to the technical problems described in the background art, the prior art has the technical problems that the yarn tension adjustment time is prolonged due to the replacement of tension elements made of different materials, so that the production efficiency of the warp knitting machine is reduced. Further, since the yarn tensioning device in the prior art is used for tensioning the yarn, the elastic support member is used for providing elastic support for the yarn, but the elasticity of the elastic support member is not controllable. Thus, prior art yarn tensioners also suffer from uncontrollable tension and tension hysteresis.

In order to solve the above technical problems, in a first aspect, an embodiment of the present invention provides a tension adjusting device. Referring to fig. 1 and 2, the tension adjusting apparatus 6 may include: a guide 1, a flow guiding pipe 2 and a power structure 3. Two adjacent guiding elements 1 are arranged at intervals, and the guiding elements 1 are used for conveying guiding wires 5. The flow guide pipe 2 is provided with an air outlet 20, the flow guide pipe 2 is positioned between two adjacent guide pieces 1, and the air outlet 20 faces the wire 5. The power structure 3 is communicated with the connecting end of the flow guide pipe 2, and the power structure 3 is used for providing wind pressure for the air outlet 20 so as to enable the wire 5 between two adjacent guide pieces 1 to move in a direction away from the flow guide pipe 2.

The wire may be a yarn, a wire, or the like. In the embodiments of the present invention, yarn is described as an example, and it should be understood that the following description is for understanding only and is not intended to be limiting.

Referring to fig. 1 and 2, in the tension adjusting device provided by the embodiment of the invention, since the power structure 3 is used for providing wind pressure for the air outlet 20, the wire 5 between two adjacent guiding members 1 moves in a direction away from the guiding tube 2. At this time, the wire 5 can be displaced in the wind pressure direction, and tensioning of the wire 5 can be achieved. Further, since the wind pressure near the air outlet 20 is the greatest, the wind pressure gradually decays as it is further away from the air outlet 20. Therefore, the wind pressure applied to the wire 5 can be adjusted by only adjusting the distance between the air outlet 20 and the wire 5, so that the tension of the wire 5 can be adjusted controllably, and the problem of uncontrollable tension in the prior art is solved. In summary, in the embodiment of the present invention, the tension element in the prior art is not required, so that the situation that the rigidity and the natural frequency of the tension element do not meet the requirements of the warp knitting machine does not occur. Based on the above, in the embodiment of the invention, the tension of the wire 5 can be controllably adjusted without changing the tension elements with the material meeting the requirements according to the speed of the warp knitting machine, and further, the tension elements with various different materials are not required to be standby. At this time, the tension adjustment cost of the yarn can be reduced, and the production cost of the yarn can be further reduced. Specifically, fig. 2 shows the wire 50 in an initial state and the wire 51 after adjustment.

Referring to fig. 1 and 2, in the embodiment of the present invention, wind pressure is directly applied to the wire 5 to be processed, which is effective and low in delay. At this time, the probability of tension lag can be reduced. Still further, the air pressure blown to the wire 5 by the air outlet 20 can blow away the dust and other impurities on the wire 5 to improve the cleanliness of the wire 5 and further improve the quality of the wire 5. In addition, in the actual use process, the temperature of wind provided by the power structure 3 is controlled, so that the effect of drying wires can be achieved, and the wires 5 are prevented from being adhered. In addition, the tension adjusting device provided by the embodiment of the invention only comprises the guide piece 1, the guide pipe 2 and the power structure 3, so that the tension adjusting device is simple in structure, easy to assemble and use and improves the working efficiency.

In an alternative manner, the guide member may be a guide rod, and the shape, material, size, etc. of the guide rod may be set according to actual needs, which is not particularly limited herein. The guide rod is illustratively a cylindrical guide rod, and the surface of the guide rod is smoothed. At this time, abrasion to the wire rod can be reduced or avoided to ensure the quality of the wire rod. In an embodiment of the present invention, the guide member is a guide rod having a certain hardness. At this time, the problem that the elasticity of the elastic support piece is uncontrollable in the prior art can be avoided, and further the problems of uncontrollable wire tension and tension lag caused by uncontrollable elasticity are avoided. That is, the wire can be stably supported by the guide rod, so that stable transmission of the wire and real-time accurate adjustment of tension can be ensured.

In an alternative way, current warp knitting machines generally employ a widening of the width of the gate to obtain a higher production efficiency. For example, warp knitting machines extend from 134 inches to 420 inches. The length of the guide pipe can be changed according to different widths so as to ensure that all wires are subjected to the air pressure flowing at the air outlet, and further the application range of the tension adjusting device is enlarged.

As a possible implementation, referring to fig. 1 and 2, the wind pressure direction F at the wind outlet 20 is perpendicular to the length direction L1 of the wire 5 (i.e., the length direction L1 of the wire 50 in the initial state).

With the above technical solution, the wind pressure flowing out from the air outlet 20 can act on the wire 5 to the maximum. At this time, not only resources can be saved, but also the tension adjustment speed of the wire 5 can be improved, the adjustment time can be saved, and the production efficiency of the warp knitting machine can be improved. In addition, the tension adjustment cost of the yarn can be further reduced, and the production cost of the yarn is further reduced.

As a possible implementation manner, the guiding pipe is located at the center of two adjacent guiding pieces.

Under the condition of adopting the technical scheme, the wire rod in a tensioning state can be stressed and balanced, and the relative stability of the wire rod is ensured. Meanwhile, the adjustment speed of the tension of the wire rod can be increased, the adjustment time is saved, and the production efficiency of the warp knitting machine is further improved.

As a possible implementation manner, referring to fig. 1 and 2, when the duct 2 has a plurality of air outlets 20, the plurality of air outlets 20 are linearly distributed along the length direction L2 of the duct 2. And/or the plurality of air outlets 20 may be the same or different in size.

The plurality of air outlets 20 are linearly distributed along the length direction L2 of the draft tube 2. When the length direction L2 of the flow guiding tube 2 is perpendicular to the length direction L1 of the wires 5, the wind pressure of each air outlet 20 acts on each wire 5 correspondingly, the positions of the wires 5 affected by the wind pressure are also in the same straight line, and the straight line is parallel to the straight line of the air outlets 20. At this time, the displacement generated by each wire 5 can be ensured to be the same, so that the tension of each wire 5 is ensured to be equal or meet the actual requirement.

Since the plurality of outlets 20 are the same or different in size. When the air outlets 20 are the same, the wind pressures flowing through the air outlets 20 can be ensured to be substantially uniform or consistent, so as to ensure that the tension of each wire 5 is equal or meets the actual requirement. When the sizes of the air outlets 20 are different, the size of the air outlet 20 on the guide pipe 2 can be set according to the actual situation, the size selectivity of the air outlet 20 is increased, so that the guide pipe 2 is suitable for different application scenes, and the application range of the tension adjusting device is further widened.

It should be understood that in the draft tube 2, the other positions of the draft tube 2 are closed except for the air outlet 20 and the position where the connection to the power structure 3 is required. At this time, it can be ensured that the wind pressure provided by the power structure 3 is applied to the wire rod through the air outlet 20, so that the waste of resources is reduced or avoided, and the tension adjustment cost of the wire rod 5 is reduced.

As a possible implementation, referring to fig. 1, the power structure 3 may include a blower or a fan, etc., so long as wind pressure can be provided to the draft tube 2. In the embodiment of the present invention, the power structure 3 includes a blower, and as for the specific structure of the blower, reference may be made to the prior art, and no specific limitation is made herein.

As a possible implementation, referring to fig. 1, the tension adjustment device may further comprise a pressure adjustment member 4. The pressure adjusting component 4 is disposed on the flow guiding pipe 2 for adjusting the wind pressure at the air outlet 20. Specifically, the pressure adjusting member 4 is located between the power structure 3 and the air outlet 20 near the power structure 3.

The pressure adjusting part 4 can be used for rapidly adjusting the wind pressure at the air outlet 20 so as to adjust the displacement of the wire 5 caused by wind pressure, and further adjust the tension of the wire 5, so that the tension of the wire 5 meets the actual requirement. That is, the tension of the wire 5 can be simply and rapidly adjusted by using the pressure adjusting part 4, thereby saving the adjusting time and improving the working efficiency. Further, under the cooperation of the pressure adjusting part 4, the flow guide pipe 2 and the power structure 3, the tension adjusting degree of the wire 5 can be further controlled so as to control the tension of the wire 5, and further solve the problem of uncontrollable tension in the prior art.

The manner of the "installation" is various, and may be, for example, welding, clamping, or the like. The pressure adjusting member 4 is not particularly limited, and may be provided to the draft tube 2.

In an alternative manner, the pressure adjusting member 4 may be a pressure reducing valve, and as for a specific structure of the pressure reducing valve, reference may be made to the prior art, and no specific limitation is made herein.

In an alternative, a communication pipe may be provided between the power structure 3 and the draft tube 2, in which case the communication pipe acts as a transition piece. Next, the pressure regulating member 4 is provided on the communicating pipe.

As a possible implementation manner, referring to fig. 4, the tension adjusting device may further include: a tension sensor 7 and a controller 8. The tension sensor 7 is provided on the conveyance path of the wire 5 for detecting the tension of the wire 5. The controller 8 is electrically connected to both the power structure 3 and the tension sensor 7, and the controller 8 is configured to control the output power of the power structure 3 according to the tension (e.g., a tension value, etc.) detected by the tension sensor 7.

The output power of the power structure 3 is controlled by the controller 8, so that the magnitude of wind pressure provided by the power structure 3 for the air outlet can be controlled, and the tension of the wire 5 can be further adjusted. Specifically, in the process of adjusting the tension of the wire, the tension sensor 7 may be used to detect the tension of the wire 5 at a certain time or in real time. Then, according to the tension actually needed and the detected tension, the pressure adjusting part 4 is adjusted, or the distance between the air outlet 20 and the wire 5 is adjusted, or the output power of the power structure 3 is adjusted by a controller, so as to adjust the displacement generated by the wire 5, and further adjust the tension of the wire 5.

In an alternative, the tension sensor may be a BTSR yarn tension sensor of the prior art, but may also be other devices that meet the requirements. For a specific structure of BTSR yarn tension sensor, reference is made to the prior art and will not be described in detail here. The BTSR yarn tension sensor is illustratively fixed in a position (the specific location may be selected according to the actual situation, and is not specifically limited herein) and does not move with the wire. When the tension of the wire needs to be detected, the pinch roller of the BTSR yarn tension sensor can bend the tightened wire. At this point, BTSR yarn tension sensors can acquire pressure values. Then, the obtained pressure value is converted into the tension of the wire rod. After that, the tension of the wire is fed back to the controller 8. Of course, the tension can also be fed back to the control system 9 to facilitate the staff to obtain information. It should be understood that the control system is not the same component as the controller, and the control system is part of the warp knitting machine and can be used in conjunction with the tensioning device. For example, the control system may be a PC (Personal Computer ), and the control system 9 is electrically connected to the controller 8 and the tension sensor 7, respectively.

In an alternative, the controller may be integrated within the power structure, but may also be provided as a separate device peripheral. And, the controller may be any well-known device in the art.

In the embodiment of the invention, when the power structure is a blower, the controller is used for controlling and adjusting the output power of the motor inside the blower according to the tension detected by the tension sensor.

As a possible implementation manner, referring to fig. 1 to 3, when the tension adjusting device includes a plurality of flow guiding pipes 2, the plurality of flow guiding pipes 2 are connected in parallel, and the connection ends of the plurality of flow guiding pipes 2 are all communicated with the power structure 3.

In actual use, each guide tube 2 corresponds to a portion of wire 5 located between two adjacent guide members 1. Then, the tension of the plurality of wires 5 is adjusted simultaneously by the air outlets 20 of the plurality of guide pipes 2. At this time, the tension adjustment speed of the wire 5 can be further increased, the tension adjustment time of the wire 5 can be further saved, and the production efficiency of the warp knitting machine can be further improved.

In an alternative, referring to fig. 1 to 3, the tension adjusting apparatus described above may further include a plurality of pressure adjusting members 4. Each pressure adjusting component 4 is correspondingly arranged on each flow guiding pipe 2, and the pressure adjusting component 4 is used for adjusting the wind pressure at the air outlet 20. At this time, the wind pressure provided at the air outlet 20 of each guide pipe 2 is individually controllable, so that the tension of the wires 5 to be treated meets the actual requirement. Further, the plurality of pressure regulating members 4 increases flexibility in tension adjustment of the wire 5. Further, if tension adjustment is not required for the wire 5 in any one or several areas of the entire wire 5, wind pressure may not be applied to the area, thereby saving resources.

The tension adjusting device may include a blower, six guide pipes 2, and six pressure reducing valves, for example.

As a possible implementation, see fig. 1, two adjacent guides 1 are respectively guided and supported on both sides of the wire 5.

At this time, compared with the mode of adopting both ends of the drawn wire 5 for transmission, the deformation amount of the wire 5 can be reduced to ensure the quality of the wire 5. Further, the wire 5 can be controlled to deform only under the action of wind pressure due to displacement, so that the influence factors of the deformation of the wire 5 are reduced, and the finally obtained wire 5 meets the actual requirements.

Illustratively, each guide 1 has opposed first and second guide faces, the first face of the wire 5 abutting the first guide face of one guide 1 and the second face of the wire 5 abutting the second guide face of the other guide 1. It should be understood that the head and the tail ends of the wire 5 are fixed by other means in the warp knitting machine, not specifically limited herein, and reference is made to the prior art.

In a second aspect, an embodiment of the present invention further provides a warp knitting machine, including the tension adjusting device according to the above technical scheme.

The warp knitting machine provided by the embodiment of the invention has the same beneficial effects as the tension adjusting device in the technical scheme, and the description is omitted here.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A tension adjustment device, comprising:

the guide pieces are arranged at intervals, and the guide pieces are used for guiding the transmission of the wires;

a draft tube with an air outlet; the guide pipe is positioned between two adjacent guide pieces, and the air outlet faces the wire rod;

The power structure is communicated with the connecting end of the guide pipe and is used for providing wind pressure for the air outlet so that wires between two adjacent guide pieces move in a direction away from the guide pipe.

2. The tension adjusting device according to claim 1, wherein a wind pressure direction at the wind outlet is perpendicular to a length direction of the wire.

3. The tensioning device of claim 1 or2, wherein the draft tube is located at a central position of two adjacent guide members.

4. The device according to claim 1, wherein when the draft tube has a plurality of air outlets,

The air outlets are distributed in a straight line along the length direction of the guide pipe; and/or the sizes of the air outlets are the same or different.

5. The tensioning device of claim 1, wherein the power structure comprises a blower;

adjacent two guide pieces are respectively guided and supported on two sides of the wire rod.

6. The tensioning device of claim 1, further comprising a pressure adjustment member;

The pressure regulating component is arranged on the guide pipe and is used for regulating the wind pressure at the air outlet.

7. The tensioning device of claim 1, wherein when the tensioning device comprises a plurality of flow guides, the flow guides are connected in parallel, and the connecting ends of the flow guides are all in communication with the power structure.

8. The tensioning device of claim 7, further comprising a plurality of pressure adjustment members;

each pressure regulating component is correspondingly arranged on each guide pipe and is used for regulating the wind pressure at the air outlet.

9. The tensioning device of claim 1, further comprising:

The tension sensor is arranged on the transmission path of the wire rod and is used for detecting the tension of the wire rod;

And the controller is electrically connected with the power structure and the tension sensor and is used for controlling the output power of the power structure according to the tension detected by the tension sensor.

10. A warp knitting machine, characterized by comprising: a tensioning device as claimed in any one of claims 1 to 9.