Tension adjusting device for side yarn of loom

Abstract

The utility model discloses a tension adjusting device for edge yarns of a loom. The tension adjusting device comprises a magnetic powder brake, a taper tension controller, a proximity sensor and a rotating handle, a rotating shaft is arranged at the axis of the magnetic powder brake; the taper tension controller is electrically connected with the magnetic powder brake and is used for adjusting the input voltage and the input current of the magnetic powder brake; the proximity sensor is arranged on the periphery of the magnetic powder brake and electrically connected with the taper tension controller. The first end of the rotating handle is fixedly mounted on the rotating shaft, and the second end extends out of the outer edge of the magnetic powder brake; in the rotating process of the rotating shaft, the second end of the rotating handle periodically passes through the proximity sensor; wherein the proximity sensor and the rotating handle are used for recording the rotating turn number information of the rotating shaft, and the taper tension controller is used for adjusting the braking force of the magnetic powder brake according to the turn number information. According to the tension adjusting device for the edge yarn of the loom, the tension of the yarn can be automatically adjusted, the tension on the yarn is kept stable, it is guaranteed that the yarn can be continuously and stably let off, and the phenomena that the yarn is broken, the edge of cloth is rolled and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery, in particular to a tension regulating device for edge yarns of a loom. Background Art

[0002] In the weaving process, different yarns are woven and fed, and the control of yarn tension is crucial. The yarn tension should not be too loose or too tight. Without proper tension control, many problems will arise in the normal production process. When the yarn tension is too loose, it cannot be effectively fed; and when the yarn tension is too tight, the friction between the yarn and the yarn guide wheel during the feeding process increases, which can easily cause the problem of broken yarn. In addition to often causing problems such as broken yarn and low production efficiency, poor tension control can also cause the edge of the fabric to curl. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tension regulating device for the edge yarn of a loom, which can automatically adjust the tension of the yarn and maintain the tension on the yarn stable, thereby ensuring that the yarn can be continuously and stably fed, avoiding phenomena such as yarn breakage and curling of the edge of the cloth.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model provides a tension adjustment device for edge yarn of a loom, comprising:

[0006] The magnetic powder brake has a rotating shaft at its axis;

[0007] A taper tension controller, electrically connected to the magnetic powder brake, for adjusting the input voltage and input current of the magnetic powder brake to control the braking force of the magnetic powder brake;

[0008] a proximity sensor, disposed at the periphery of the magnetic powder brake and electrically connected to the taper tension controller; and

[0009] A rotating handle, a first end of which is fixedly mounted on the rotating shaft, and a second end of which extends out of the outer edge of the magnetic powder brake; and during the rotation of the rotating shaft, the second end of the rotating handle periodically passes through the proximity sensor;

[0010] The proximity sensor and the rotating handle are used to record the number of revolutions of the rotating shaft, and the taper tension controller is used to adjust the braking force of the magnetic powder brake according to the number of revolutions information.

[0011] In some preferred embodiments of the present invention, the tension adjustment device further comprises a mounting base plate, and the magnetic powder brake and the taper tension controller are both fixed to a first side of the mounting base plate.

[0012] In some preferred embodiments of the present invention, a sensor mounting bracket is also fixed to the edge of the mounting base plate, and the proximity sensor is mounted on the sensor mounting bracket.

[0013] In some preferred embodiments of the present invention, the rotating shaft passes through the mounting base plate, and the rotating handle is located on a first side of the mounting base plate.

[0014] In some preferred embodiments of the present invention, the tension adjusting device further comprises a pay-off wheel, which is mounted on the rotating shaft and located on the second side of the mounting base plate.

[0015] In some preferred embodiments of the present invention, the tension adjustment device also includes a pay-off wheel, which includes an axle and wheel discs located on both sides of the axle, and the pay-off wheel is installed on the rotating shaft and is located on the second side of the mounting base.

[0016] In some preferred embodiments of the utility model, a through hole is provided in the wheel axle, and the pay-off wheel is passed through the through hole on the rotating shaft; a limiting end is provided on the end of the rotating shaft located on the second side of the mounting base plate, and the limiting end is threadedly connected to the end of the rotating shaft; the pay-off wheel is limited on the rotating shaft by the limiting end.

[0017] In some preferred embodiments of the utility model, a connecting rod is also mounted on the rotating shaft, and the connecting rod is located between the mounting base plate and the pay-off wheel; the connecting rod has a protrusion, and the wheel disc has a groove matching the protrusion; when the pay-off wheel is passed through the rotating shaft, the protrusion on the connecting rod is embedded in the groove on the wheel disc, so that the pay-off wheel is fixed on the rotating shaft.

[0018] The utility model also provides another tension adjustment device for edge yarn of a loom, comprising:

[0019] Install the base plate;

[0020] A magnetic powder brake is fixed to the first side of the mounting base plate, and a rotating shaft is provided at the axis of the magnetic powder brake, and the rotating shaft passes through the mounting base plate;

[0021] A taper tension controller is fixed to the first side of the mounting base plate, is electrically connected to the magnetic powder brake, and is used to adjust the input voltage and input current of the magnetic powder brake to control the braking force of the magnetic powder brake;

[0022] A proximity sensor, fixed to an edge of the mounting base plate and electrically connected to the taper tension controller;

[0023] a pay-off wheel, which is passed through the rotating shaft and is located on the second side of the mounting base plate; the pay-off wheel comprises a wheel axle and wheel discs located on both sides of the wheel axle; and

[0024] A connecting rod is fixed on the rotating shaft and is located between the mounting base and the pay-off wheel; the connecting rod has a convex block, and the wheel disc has an embedding groove matching the convex block; when the pay-off wheel is inserted on the rotating shaft, the convex block on the connecting rod is embedded in the embedding groove on the wheel disc, so that the pay-off wheel is fixed on the rotating shaft; during the rotation of the rotating shaft, the connecting rod periodically passes through the proximity sensor;

[0025] The proximity sensor and the connecting rod are used to record the number of revolutions of the rotating shaft, and the taper tension controller is used to adjust the braking force of the magnetic powder brake according to the number of revolutions information.

[0026] In some preferred embodiments of the utility model, a through hole is provided in the wheel axle, and the pay-off wheel is passed through the through hole on the rotating shaft; a limiting end is provided on the end of the rotating shaft located on the second side of the mounting base plate, and the limiting end is threadedly connected to the end of the rotating shaft; the pay-off wheel is limited on the rotating shaft by the limiting end.

[0027] In some preferred embodiments of the present invention, a sensor mounting bracket is also fixed to the edge of the mounting base plate, and the proximity sensor is mounted on the sensor mounting bracket.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] 1. The utility model provides a tension adjustment device for the edge yarn of a loom, which can automatically adjust the tension of the yarn and maintain the tension on the yarn stable, thereby ensuring that the yarn can be continuously and stably fed, and avoiding phenomena such as yarn breakage and curling of the edge of the cloth.

[0030] 2. The tension regulating device for the edge yarn of a loom provided by the utility model has a simple structure and can very conveniently adjust the tension of the yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A front view of a tension adjustment device according to an embodiment of the utility model;

[0032] Figure 2 for Figure 1 A top view of the tension adjustment device in FIG.

[0033] Figure 3 It is a front view of a tension adjustment device according to another embodiment of the utility model;

[0034] Explanation of the numbers in the figure: 100, mounting base plate; 110, vertical plate; 200, taper tension controller; 210, display screen; 220, adjusting knob; 300, magnetic powder brake; 310, rotating shaft; 410, sensor mounting bracket; 420, proximity sensor; 500, rotating handle; 600, pay-off wheel; 610, wheel axle; 620, wheel disc; 630, limit end; 700, connecting rod; 710, bump. DETAILED DESCRIPTION

[0035] 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 those skilled in the art without creative work are within the scope of protection of the utility model.

[0036] In the drawings, components with the same structure are indicated by the same numerical labels, and components with similar structures or functions are indicated by similar numerical labels. Directional terms mentioned in the present invention, such as up, down, front, back, left, right, inside, outside, upper surface, lower surface, side, top surface, bottom, front end, rear end, end, etc., are only directions in the drawings and are only used to explain and illustrate the present invention, but not to limit the scope of protection of the present invention.

[0037] In the drawings, components with the same structure are indicated by the same numerical reference numerals. When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted to" or "connected to" another component, the two may be understood to be directly "mounted" or "connected", or one component may be indirectly "mounted to" or "connected to" another component through an intermediate component.

[0038] As described in the background technology, in the process of weaving, different yarns will be woven and fed, and the control of yarn tension is crucial. The tension of the yarn should not be too loose or too tight. Without proper tension control, many problems will arise in the normal production process. When the tension of the yarn is too loose, it cannot be effectively fed; and when the tension of the yarn is too tight, the friction between the yarn and the yarn guide wheel during the feeding process increases, which can easily cause the problem of broken yarn. In addition to often causing problems such as broken yarn and low production efficiency, poor tension control can also cause the edge of the fabric to curl.

[0039] At present, the tension control equipment widely used in textile companies mainly uses motors or magnetic powder brakes to control the rotation of the pay-off wheel, and measures the tension information on the yarn to provide feedback to the motor or magnetic powder brake to achieve tension control. This type of tension control equipment is either large-scale, complex, and expensive; or can only be adjusted manually and does not have the function of automatic tension adjustment.

[0040] See also Figure 1 In one embodiment of the utility model, a tension adjustment device for edge yarn of a loom is provided, which includes a magnetic powder brake 300, a taper tension controller 200, a proximity sensor 420 and a rotating handle 500.

[0041] The magnetic powder brake 300 and the taper tension controller 200 are both fixed to the mounting base plate 100, for example, they can be fixed to the mounting base plate 100 by multiple bolts. The mounting base plate 100 is arranged perpendicular to the horizontal plane, and the magnetic powder brake 300 and the taper tension controller 200 are both located on the same side, for example, the side can be defined as the first side of the mounting base plate 100. In some embodiments, the first side of the mounting base plate 100 is also integrally formed with a vertical plate 110, which is preferably perpendicular to the mounting base plate 100 and is used to install the tension adjustment device on the equipment.

[0042] The magnetic powder brake 300 is an existing brake device, which is based on the electromagnetic principle and uses magnetic powder to transmit torque. It has been widely used in the unwinding and winding tension control in the relevant winding processing industry. Its structure is not described in detail in this utility model. In the utility model, a rotating shaft 310 is provided at the axis of the magnetic powder brake 300, and the rotating shaft 310 passes through the mounting base plate 100 and extends out, and the extended end is used to install the pay-off wheel 600.

[0043] The taper tension controller 200 is electrically connected to the magnetic powder brake 300 through a wire, and is used to adjust the input voltage and input current of the magnetic powder brake 300 to control the braking force of the magnetic powder brake 300, thereby realizing the tension control of the pay-off wheel 600 installed on the rotating shaft 310. The taper tension controller 200 is an existing tension control device, and its structure is not described in detail in the utility model.

[0044] The proximity sensor 420 is disposed at the periphery of the magnetic powder brake 300 and is electrically connected to the taper tension controller 200. In some embodiments, a sensor mounting bracket 410 is fixed to the edge of the mounting base 100, and the proximity sensor 420 is mounted on the sensor mounting bracket 410.

[0045] The handle 500 is mounted on the rotating shaft 310, and can be driven to rotate by the rotating shaft 310. Specifically, the handle 500 and the magnetic powder brake 300 are both located on the first side of the mounting base 100, and the first end of the handle 500 is fixedly mounted on the rotating shaft 310, and the second end extends out of the outer edge of the magnetic powder brake 300. In some embodiments, the first end of the handle 500 can be fixed to the end of the rotating shaft 310 by a fixing member such as a screw or a nut. During the rotation of the rotating shaft 310, the second end of the handle 500 can periodically pass by the proximity sensor 420 and trigger the proximity sensor 420.

[0046] In the present invention, during the rotation of the shaft 310, the proximity sensor 420 and the handle 500 cooperate with each other to record the number of revolutions of the shaft 310, and transmit the corresponding electrical signal to the taper tension controller 200. The taper tension controller 200 can adjust the braking force of the magnetic powder brake 300 according to the number of revolutions of the shaft 310. For example, in some embodiments, when the shaft 310 rotates N times, the taper tension controller 200 increases the braking force of the magnetic powder brake 300 according to a certain proportion, thereby ensuring the stability of the yarn tension on the pay-off wheel 600.

[0047] See also Figure 1-2 The tension adjustment device of the utility model further includes a pay-off wheel 600, which is mounted on the rotating shaft 310 and located on the second side of the mounting base 100. In some embodiments, the pay-off wheel 600 includes an axle 610 and a wheel disc 620 located on both sides of the axle 610. A through hole is also provided in the axle 610, and the pay-off wheel 600 is passed through the axle 310. A limiting end 630 is also provided on the end of the rotating shaft 310 located on the second side of the mounting base 100, and the limiting end 630 is threadedly connected to the end of the rotating shaft 310, so as to limit the pay-off wheel 600 on the rotating shaft 310.

[0048] In some preferred embodiments of the utility model, a connecting rod 700 is also mounted on the rotating shaft 310, and the connecting rod 700 is located between the mounting base plate 100 and the pay-off wheel 600. The connecting rod 700 can be fixed to the rotating shaft 310 by a fixing member such as a locking sleeve, so that it can rotate with the rotating shaft 310. The end of the connecting rod 700 is fixedly connected to the wheel disc 620 of the pay-off wheel 600, so that the rotating shaft 310 can drive the pay-off wheel 600 to rotate together through the connecting rod 700. In the utility model, the method of fixed connection between the connecting rod 700 and the wheel disc 620 is not limited, and preferably a detachable fixing method is adopted, such as snap connection, interlocking, magnetic fixation, threaded connection, etc.

[0049] In some preferred embodiments of the utility model, the connecting rod 700 has a protrusion 710 on one side facing the pay-off wheel 600, and the wheel disc 620 is provided with an embedding groove matching the protrusion 710. When the pay-off wheel 600 is passed through the rotating shaft 310 and limited by the limiting end 630, the protrusion 710 on the connecting rod 700 is embedded in the embedding groove on the wheel disc 620, and the pay-off wheel 600 is fixed on the rotating shaft 310, so that it can be driven by the rotating shaft 310 to rotate. The connecting rod 700 and the wheel disc 620 are fixedly connected in an interlocking manner, so as to facilitate the installation and removal of the pay-off wheel 600.

[0050] In addition, the utility model also provides another embodiment of the tension adjustment device. Figure 3 Compared with the aforementioned tension adjustment device, the tension adjustment device of this embodiment cancels the turning handle 500, and adjusts the installation direction of the proximity sensor 420 so that it is set in the direction of the pay-off wheel 600. In this way, the connecting rod 700 can be used to replace the turning handle 500. That is, during the rotation of the rotating shaft 310, the connecting rod 700 periodically passes through the proximity sensor 420 and triggers the proximity sensor 420, so that the number of rotations of the rotating shaft 310 can be recorded by the mutual cooperation between the proximity sensor 420 and the connecting rod 700. Then, the taper tension controller 200 can adjust the braking force of the magnetic powder brake 300 according to the number of rotations of the rotating shaft 310, thereby realizing the control of the yarn tension on the pay-off wheel 600 and ensuring the stability of the yarn tension.

[0051] In some embodiments of the present invention, the taper tension controller 200 is provided with a display screen 210 and an adjustment knob 220, so that the parameters can be adjusted conveniently.

[0052] The principle of the tension regulating device of the utility model is:

[0053] In the process of yarn pay-off, as the number of turns of the pay-off wheel 600 increases, the radius of the yarn ball on the pay-off wheel 600 gradually decreases, and the tension of the yarn also decreases accordingly. Therefore, there is a certain correlation between the tension of the yarn and the number of turns of the pay-off wheel 600. In the utility model, a proximity sensor 420 is arranged on the outer ring of the magnetic powder brake 300, and the number of turns of the pay-off wheel 600 is counted by the cooperation of the proximity sensor 420 and the handle 500 / connecting rod 700 installed on the rotating shaft 310, and the number of turns of the pay-off wheel 600 is transmitted to the taper tension controller 200 in the form of an electrical signal. The taper tension controller 200 adjusts the input voltage and current of the magnetic powder brake 300 according to the number of turns of the pay-off wheel 600, thereby adjusting the tension of the yarn on the pay-off wheel 600 by controlling the magnetic powder brake 300.

[0054] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A tension adjustment device for selvedge yarn of a loom, characterized in that: include: The magnetic powder brake has a rotating shaft at its axis; A taper tension controller, electrically connected to the magnetic powder brake, for adjusting the input voltage and input current of the magnetic powder brake to control the braking force of the magnetic powder brake; A proximity sensor, disposed at the periphery of the magnetic powder brake and electrically connected to the taper tension controller; as well as A rotating handle, a first end of which is fixedly mounted on the rotating shaft, and a second end of which extends out of the outer edge of the magnetic powder brake; and during the rotation of the rotating shaft, the second end of the rotating handle periodically passes through the proximity sensor; The proximity sensor and the rotating handle are used to record the number of revolutions of the rotating shaft, and the taper tension controller is used to adjust the braking force of the magnetic powder brake according to the number of revolutions information.

2. A tension adjustment device for selvedge yarn of a loom according to claim 1, characterized in that: It also includes a mounting base plate, and the magnetic powder brake and the taper tension controller are both fixed on a first side of the mounting base plate.

3. A tension adjustment device for selvedge yarn of a loom according to claim 2, characterized in that: A sensor mounting bracket is also fixed to the edge of the mounting base plate, and the proximity sensor is mounted on the sensor mounting bracket.

4. A tension adjustment device for selvedge yarn of a loom according to claim 2, characterized in that: The rotating shaft passes through the mounting base plate, and the rotating handle is located at a first side of the mounting base plate.

5. A tension adjustment device for selvedge yarn of a loom according to claim 4, characterized in that: The tension adjustment device also includes a pay-off wheel, which includes a wheel axle and wheel discs located on both sides of the wheel axle. The pay-off wheel is installed on the rotating shaft and is located on the second side of the mounting base plate.

6. A tension adjustment device for selvedge yarn of a loom according to claim 5, characterized in that: A through hole is provided in the wheel axle, and the pay-off wheel is inserted into the rotating shaft through the through hole; a limiting end is provided on the end of the rotating shaft located on the second side of the mounting base plate, and the limiting end is threadedly connected to the end of the rotating shaft; the pay-off wheel is limited on the rotating shaft by the limiting end.

7. A tension adjustment device for selvedge yarn of a loom according to claim 6, characterized in that: The rotating shaft is also provided with a connecting rod, and the connecting rod is located between the mounting base plate and the pay-off wheel; the connecting rod is provided with a protrusion, and the wheel disc is provided with an embedding groove matching the protrusion; when the pay-off wheel is passed through the rotating shaft, the protrusion on the connecting rod is embedded in the embedding groove on the wheel disc, so that the pay-off wheel is fixed on the rotating shaft.

8. A tension adjustment device for selvedge yarn of a loom, characterized in that: include: Install the base plate; A magnetic powder brake is fixed to the first side of the mounting base plate, and a rotating shaft is provided at the axis of the magnetic powder brake, and the rotating shaft passes through the mounting base plate; A taper tension controller is fixed to the first side of the mounting base plate, is electrically connected to the magnetic powder brake, and is used to adjust the input voltage and input current of the magnetic powder brake to control the braking force of the magnetic powder brake; A proximity sensor, fixed to an edge of the mounting base plate and electrically connected to the taper tension controller; a pay-off wheel, which is passed through the rotating shaft and is located on the second side of the mounting base plate; the pay-off wheel comprises a wheel axle and wheel discs located on both sides of the wheel axle; and A connecting rod is fixed on the rotating shaft and is located between the mounting base and the pay-off wheel; the connecting rod has a convex block, and the wheel disc has an embedding groove matching the convex block; when the pay-off wheel is inserted on the rotating shaft, the convex block on the connecting rod is embedded in the embedding groove on the wheel disc, so that the pay-off wheel is fixed on the rotating shaft; during the rotation of the rotating shaft, the connecting rod periodically passes through the proximity sensor; The proximity sensor and the connecting rod are used to record the number of revolutions of the rotating shaft, and the taper tension controller is used to adjust the braking force of the magnetic powder brake according to the number of revolutions information.

9. A tension adjustment device for selvedge yarn of a loom according to claim 8, characterized in that: A through hole is provided in the wheel axle, and the pay-off wheel is inserted into the rotating shaft through the through hole; a limiting end is provided on the end of the rotating shaft located on the second side of the mounting base plate, and the limiting end is threadedly connected to the end of the rotating shaft; the pay-off wheel is limited on the rotating shaft by the limiting end.

10. A tension adjustment device for selvedge yarn of a loom according to claim 8, characterized in that: A sensor mounting bracket is also fixed to the edge of the mounting base plate, and the proximity sensor is mounted on the sensor mounting bracket.

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