Industrial yarn unwinding device

Abstract

The utility model belongs to the technical field of textile machinery, and relates to an industrial yarn unwinding device, in particular to a T-shaped piece composed of a horizontal part and a vertical part. The horizontal part is a rotating body, one end is used for being inserted into a silk roll core, the other end is rotationally connected with the vertical part, and a rotating shaft is a center shaft of the horizontal part; the part, located above the rotating shaft, of the unwinding device is equal to the part, located below the rotating shaft, of the unwinding device in mass. The vertical part comprises an upper plate, a sliding rail, a sliding block, a spring and a lower plate; the spring is a cylindrical compression spiral spring and is moderate in elastic coefficient; the maximum distance between the sliding block and the rotating shaft is not smaller than the radius of a silk roll, and the minimum distance between the sliding block and the rotating shaft is not smaller than the outer diameter of a roll core. Through ingenious cooperation of the sliding block and the spring, the problems that in the industrial yarn backing-off process, a yarn bundle collides with a yarn frame and is wound or hung due to the fact that a yarn bundle balloon is too large are solved, meanwhile, the tension of the yarn bundle in the backing-off process can be improved, the problem that long yarn and short yarn appear in a same batch of yarn rolls is solved, and backing-off efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of textile machinery and relates to an industrial yarn unwinding device. Background Art

[0002] Polyester industrial yarn usually refers to industrial polyester filament with a fineness of more than 550dtex. It is not only high in strength, but also has excellent wear resistance, dimensional stability and thermal stability. It is widely used in conveyor belt skeleton materials, fire hoses, automobile seat belts, tire cord fabrics, advertising cloths, geotextiles and other fields. The starting point of the weaving, warping and weaving process of polyester industrial yarn is the unwinding of the tow. During the unwinding process, due to the large fineness and fast speed of the yarn, the tow swings with a large amplitude under the inertial force during unwinding, forming an air ring. The tow is prone to collision with the wire frame or winding around the root of the paper tube, or even winding around the wire frame. In addition, during the weaving process, when the industrial yarn is unwound from the yarn roll, the tow loses the cohesive stress maintained during winding, and the tow will be relaxed to a certain extent. The unwinding tension is not enough to maintain the tensile state of the original yarn, so the relaxation will shorten the length of the tow. If the relaxation forms of the same batch of yarns are different, the problem of long and short yarns is prone to occur.

[0003] To solve the above problems, the bagged raw yarn is often placed on the wire rack for direct unwinding or a wire pressing cloth is used to press the upper layer of the wire roll to improve the problems of wire bundle shedding and excessive air ring during unwinding, while providing greater unwinding tension. However, after many tests and studies, it was found that both the unwinding of the wire roll bag and the wire pressing cloth have a significant damage to the strength of the unwound wire.

[0004] Patent CN219525831U discloses a wire unwinding device that is not easy to derail, including a wire winding drum for winding the wire, a guiding device for changing the wire stretching direction and a guide ring; the guiding device includes a circular ring-shaped annular guide rail and a slider hook for hooking and changing the pulling direction of the wire; the slider hook can be slidably arranged on the annular guide rail; the slider hook can slide on the annular guide rail; the wire winding drum is cylindrical; the annular guide rail is colinear with the axis of the wire winding drum; the wire winding drum passes through the annular ring of the annular guide rail; the guide ring is arranged on the extension line of the axis of the wire winding drum; the line connecting the contact point of the guide ring with the wire to the contact point of the slider hook with the wire will not contact the winding wire on the wire winding drum. This utility model solves the problem of the wire bundle being knotted during the wire unwinding process, but the device cannot apply stable pressure to the unwinding wire bundle, and cannot play a role in increasing the unwinding tension.

[0005] Patent CN219906450U discloses a yarn unwinding and exporting device, including a support frame, a yarn rotating shaft for carrying a yarn sleeve is arranged on the support frame, a pressed bearing is arranged on one side of the yarn rotating shaft, a transverse rotating bracket is arranged on the pressed bearing, a limited extrusion part is arranged on the transverse rotating bracket, and also includes a guide part arranged on one side of the limited extrusion part; the utility model adopts the yarn rotating shaft to bear the yarn sleeve, and then uses the limited extrusion part to make the yarn in a compressed state after exporting, so as to ensure its tension, and the limited extrusion part can follow the reduction of the yarn on the yarn sleeve, so as to achieve the purpose of simplifying the structure and improving reliability; the annular sleeve plays the role of following and positioning, and the extrusion rod plays the role of friction and providing tension, but the device requires the yarn rotating shaft to assist the rotation of the yarn tube, which is not suitable for the unwinding of the wire frame of industrial yarn unwinding.

[0006] Therefore, it is urgent to develop a new type of industrial yarn unwinding device. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the utility model provides an industrial yarn unwinding device.

[0008] In order to achieve the above purpose, the scheme adopted by the utility model is as follows:

[0009] An industrial yarn unwinding device is a T-shaped piece consisting of a horizontal part and a vertical part;

[0010] The horizontal part is a rotating body, one end of which is used to be inserted into the winding core of the silk roll, and the other end is rotatably connected to the vertical part, and the rotation axis is the central axis of the horizontal part;

[0011] The part of the industrial yarn unwinding device located above the rotating shaft has the same mass as the part of the industrial yarn unwinding device located below the rotating shaft; the weight of the upper and lower parts is designed to be consistent during structural design to avoid the influence of eccentric rotation on the stability of the device during rotation;

[0012] The vertical part includes an upper plate, a slide rail, a slider, a spring and a lower plate;

[0013] The upper plate is provided with a strip-shaped through hole, and the strip-shaped through hole is located above the horizontal portion;

[0014] The slide rail is located in the strip-shaped through hole and is parallel to the length direction of the vertical portion;

[0015] The slider is slidably connected to the slide rail, and a through hole parallel to the rotation axis is opened on the slider;

[0016] The spring is arranged in the strip through hole, and one end is fixedly connected to the slider, and the other end is fixedly connected to the upper end of the strip through hole; the spring is a cylindrical compression coil spring with an elastic coefficient of 15 to 30 g / mm;

[0017] The maximum distance d1 between the through hole and the rotating shaft is greater than or equal to the radius of the wire roll; the minimum distance d2 between the through hole and the rotating shaft is greater than or equal to the outer diameter of the wire roll core; the design of d1 and d2 can increase the wire-out height of the wire bundle, separate the wire bundle from the wire roll, and prevent the wire bundle from interacting with the surface of the wire roll when unwinding, thereby preventing the outer wire coil of the wire roll from slipping off under the action of the unwinding wire bundle;

[0018] During the unwinding process, the tow passes through the through hole in the slider on the vertical part for unwinding. At this time, the tow applies a continuous rotation force to the vertical part. The vertical part changes with the unwinding position of the tow on the wire roll. When unwinding in circles, the balloon is reduced under the limitation of the height of the through hole, so as to reduce the amplitude of the balloon of the tow. The tow passes through the through hole and forms dynamic friction with the inner wall of the through hole. The friction force and the traction force of the tow work together to form a force to increase the wire tension of the tow.

[0019] During the rotation of the wire bundle and the slider, the centrifugal force of the wire bundle and the slider acts on the spring and becomes the elastic potential energy of the spring. When the centrifugal force fluctuates, the elastic potential energy of the spring changes accordingly: the centrifugal force of the wire bundle and the slider increases, the deformation of the spring increases, the potential energy increases, and the reverse force of the spring increases; the centrifugal force of the wire bundle and the slider decreases, the elastic potential energy of the spring decreases, and the reverse force decreases; through the compression and recovery of the spring, the tension fluctuation of the wire bundle during the unwinding process is balanced to keep the unwinding tension stable and uniform; as the unwinding operation continues, the radius of the wire roll decreases, and the unwinding tension also decreases. At this time, the centrifugal force of the wire bundle and the slider decreases, and the compression of the spring is appropriately recovered; in the process of unwinding to the bottom of the paper tube, the height of the slider and the diameter of the wire tube decrease accordingly, the spring is appropriately stretched, and the air ring of the unwinding of the wire bundle decreases accordingly, thereby maintaining the stability of the entire unwinding process.

[0020] As the preferred technical solution:

[0021] In an industrial yarn unwinding device as described above, the vertical part also includes a rotating bearing, and the other end of the horizontal part is rotatably connected to the vertical part, which means that: the other end of the horizontal part is inserted into the inner ring of the rotating bearing and fixedly connected thereto, and the upper plate and the lower plate are distributed on the upper and lower sides of the outer ring of the rotating bearing and are fixedly connected thereto at the same time.

[0022] In the industrial yarn unwinding device as described above, the rotating bearing is a ball bearing.

[0023] In the industrial yarn unwinding device as described above, the horizontal part includes a fixed sleeve, which is a cylindrical tube with an outer diameter equal to the inner diameter of the yarn coil core, and the two ends of the horizontal part are the two ends of the fixed sleeve.

[0024] In the industrial yarn unwinding device as described above, the horizontal portion further comprises a sleeve chassis, which is a circular ring fixedly sleeved on the middle portion of the fixed sleeve.

[0025] In the industrial yarn unwinding device as described above, the slider is a ceramic slider, the inner surface of the ceramic slider is smooth and hard, and the yarn bundle is unwound through the inner wall of the slider, avoiding strong damage to the yarn bundle during the unwinding process.

[0026] Beneficial effects:

[0027] Compared with the traditional industrial yarn unwinding method, the industrial yarn unwinding device of the utility model can not only solve the problems of the yarn bundle colliding with the yarn frame, the yarn bundle being entangled or the yarn being hung due to the excessively large yarn bundle air circle during the unwinding process of the industrial yarn, but also can increase the tension of the yarn bundle during the unwinding process, and avoid the problem of long and short yarns in the same batch of yarn rolls. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main structure of an industrial yarn unwinding device of the utility model;

[0029] Figure 2 It is a side structural schematic diagram of an industrial yarn unwinding device of the utility model;

[0030] Figure 3 This is a schematic diagram of the positional relationship of a slide rail, a slider and a spring of an industrial yarn unwinding device of the utility model;

[0031] 1-upper plate, 4.1-slide rail, 4.2-slider, 4.3-through hole, 4.4-spring, 5-fixed sleeve, 6-rotating bearing, 7-sleeve chassis. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0033] An industrial yarn unwinding device, such as Figure 1 , Figure 2 As shown, it is a T-shaped piece, which consists of a horizontal part and a vertical part;

[0034] The horizontal part is a rotating body, such as Figure 1 As shown, it includes a fixed sleeve 5 and a sleeve chassis 7;

[0035] The fixed sleeve 5 is a cylindrical tube, and its outer diameter is equal to the inner diameter of the wire winding core; the sleeve chassis 7 is a circular ring, which is fixedly sleeved on the middle part of the fixed sleeve 5;

[0036] like Figure 2 , Figure 3 As shown, the vertical part includes an upper plate 1, a slide rail 4.1, a slider 4.2, a spring 4.4, a lower plate and a rotating bearing 6;

[0037] The upper plate 1 is provided with a strip-shaped through hole, and the strip-shaped through hole is located above the horizontal portion;

[0038] The slide rail 4.1 is located in the strip-shaped through hole and is parallel to the length direction of the vertical portion;

[0039] The slider 4.2 is slidably connected to the slide rail 4.1, and a through hole 4.3 parallel to the rotation axis is formed on the slider 4.2; the slider 4.2 is preferably a ceramic slider;

[0040] The spring 4.4 is arranged in the strip-shaped through hole, and one end is fixedly connected to the slider 4.2, and the other end is fixedly connected to the upper end of the strip-shaped through hole; the spring 4.4 is a cylindrical compression coil spring with an elastic coefficient of 15 to 30 g / mm;

[0041] like Figure 2 As shown, one end of the fixed sleeve 5 is used to be inserted into the wire coil core, and the other end is inserted into the inner ring of the rotating bearing 6 and fixedly connected thereto, and the upper plate 1 and the lower plate are distributed on the upper and lower sides of the outer ring of the rotating bearing 6 and are fixedly connected thereto at the same time; the fixed sleeve 5, the sleeve chassis 7 and the rotating bearing 6 are coaxial; the rotating bearing 6 is preferably a ball bearing;

[0042] like Figure 2 As shown, the maximum distance d1 between the through hole 4.3 and the central axis of the fixed sleeve 5 is greater than or equal to the radius of the wire roll; the minimum distance d2 between the through hole 4.3 and the central axis of the fixed sleeve 5 is greater than or equal to the outer diameter of the wire roll core;

[0043] The portion of the industrial yarn unwinding device located above the central axis of the fixed sleeve 5 and the portion of the industrial yarn unwinding device located below the central axis of the fixed sleeve 5 have the same mass.

[0044] The use process of this industrial yarn unwinding device:

[0045] After placing the silk roll on the unwinding rack, insert the fixed sleeve 5 into the silk roll core (paper tube) at the unwinding end of the silk roll, ensure that the sleeve chassis 7 is in close contact with the silk roll core end, then pass the unwinding silk bundle through the through hole 4.3 on the slider 4.2, and finally pass the unwinding silk bundle through the wire rack wire guide hook for unwinding.

Claims

1. An industrial yarn unwinding device, characterized in that: It is a T-shaped piece, consisting of a horizontal part and a vertical part; The horizontal part is a rotating body, one end of which is used to be inserted into the winding core of the silk roll, and the other end is rotatably connected to the vertical part, and the rotation axis is the central axis of the horizontal part; The portion of the industrial yarn unwinding device located above the rotating shaft has the same mass as the portion of the industrial yarn unwinding device located below the rotating shaft; The vertical part comprises an upper plate, a slide rail (4.1), a slider (4.2), a spring (4.4) and a lower plate; The upper plate is provided with a strip-shaped through hole, and the strip-shaped through hole is located above the horizontal portion; The slide rail (4.1) is located in the strip-shaped through hole and is parallel to the length direction of the vertical portion; The slider (4.2) is slidably connected to the slide rail (4.1), and a through hole (4.3) parallel to the rotation axis is provided on the slider (4.2); The spring (4.4) is arranged in the strip-shaped through hole, and one end is fixedly connected to the slider (4.2), and the other end is fixedly connected to the upper end of the strip-shaped through hole; the spring (4.4) is a cylindrical compression coil spring, and the elastic coefficient is 15 to 30 g / mm; The maximum distance d1 between the through hole (4.3) and the rotating axis is greater than or equal to the radius of the wire roll; the minimum distance d2 between the through hole (4.3) and the rotating axis is greater than or equal to the outer diameter of the wire roll core.

2. An industrial yarn unwinding device according to claim 1, characterized in that: The vertical part also includes a rotating bearing (6), and the other end of the horizontal part is rotatably connected to the vertical part, which means that the other end of the horizontal part is inserted into the inner ring of the rotating bearing (6) and is fixedly connected thereto, and the upper plate and the lower plate are distributed on the upper and lower sides of the outer ring of the rotating bearing (6) and are fixedly connected thereto at the same time.

3. An industrial yarn unwinding device according to claim 2, characterized in that: The rotary bearing (6) is a ball bearing.

4. The industrial yarn unwinding device according to claim 2, characterized in that: The horizontal part comprises a fixed sleeve (5), which is a cylindrical tube, the outer diameter of which is equal to the inner diameter of the wire coil core, and the two ends of the horizontal part are the two ends of the fixed sleeve (5).

5. An industrial yarn unwinding device according to claim 4, characterized in that: The horizontal part also includes a sleeve chassis (7), which is a circular ring and is fixedly sleeved on the middle part of the fixed sleeve (5).

6. The industrial yarn unwinding device according to claim 1, characterized in that: The slider (4.2) is a ceramic slider.

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