Variable-diameter size ring

Abstract

The utility model relates to the technical field of plastic weaving machinery, in particular to a variable-diameter size ring which comprises a size ring body and a lifting roller, the size ring body is located at a weaving opening of a circular weaving machine, warp and weft entering in the circumferential direction of the circular weaving machine are subjected to open-cross weft insertion weaving at a lip of the size ring body, and the size ring body is in a circular ring shape. An opening and closing opening is formed in the circumferential direction of the lifting roller, a lead screw driven by a gear motor is arranged at one end of the opening and closing opening, a nut matched with the lead screw is arranged at the other end of the opening and closing opening, and a sensor is arranged at the position, close to the lifting roller, of the edge of the cloth piece. According to the device, the cloth piece width is effectively maintained and kept to fluctuate within a certain range through a self-deviation-rectifying closed-loop control system composed of the sensor and the data processing system, and the cloth piece quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic braiding mechanical technology field especially relates to a variable diameter size ring. BACKGROUND

[0002] In the plastic braiding industry, the circular weaving machine is the main equipment for plastic braiding. The folding diameter size of the woven cloth surface (the folding diameter size is half of the circumference of the woven tube cloth) is a key process parameter that needs to be controlled in the tube cloth forming process. The change of the folding diameter size directly affects the subsequent bag making, printing and other processes. At present, the common way to control the folding diameter size is to replace different specifications of the size ring to control the circumference of the woven tube cloth. However, due to the difference between the formation mechanism of the weft yarn spindle and the yarn feeding mechanism of the circular weaving machine in the shuttle body, the yarn feeding tension value is greatly different at different diameters. In addition, the accumulation of various factors such as warp and weft tension control, flat silk raw material quality and formula proportion during the weaving process also causes the weaving weft feeding point to drift, resulting in a large deviation of the folding diameter size. Therefore, it is urgent to adjust the size ring to control the folding diameter size in real time during the weaving process. However, the conventional way of replacing the size ring cannot meet the above-mentioned needs.

[0003] A Chinese invention patent with the authorization announcement number CN102677376B discloses a variable diameter control mechanism of a weaving machine, which can realize dynamic control of the fabric diameter of the circular weaving machine, has simple structure, low cost and is convenient to use. However, its structure is complex and cannot be technically improved and upgraded on the existing circular weaving machine. CONTENT OF THE UTILITY MODEL

[0004] TECHNICAL OBJECTIVE: In order to overcome the deficiencies in the prior art, the utility model provides a variable diameter size ring.

[0005] TECHNICAL SCHEME: In order to achieve the above-mentioned purpose, the utility model discloses a variable diameter size ring, which comprises a size ring and a lifting roller. The size ring is located at the weaving port of the circular weaving machine. The warp and weft entering along the circumference of the circular weaving machine are opened and fed to weave at the lip of the size ring. The size ring is in the form of a circular ring, which is provided with an opening at the circumference. One end of the opening is provided with a lead screw driven by a speed reducer, and the other end is provided with a nut matched with the lead screw. A sensor is arranged near the lifting roller and at the edge of the cloth piece.

[0006] Preferably, the number of sensors is two. The two sensors are defined as a first sensor and a second sensor respectively. The horizontal distance between the first sensor and the second sensor is equal to half of the standard deviation value of the cloth piece folding diameter size.

[0007] Preferably, the sensors are all photoelectric sensors.

[0008] Preferably, the size ring is a thin-walled metal circular ring.

[0009] Preferably, each of the two end portions of the opening and closing mouth is provided with a transition inclined surface at the overlapping surface.

[0010] Preferably, the sensor electric signal is transmitted to the PLC controller through a signal amplifier, and the size ring is adjusted in diameter through a frequency converter controller and a speed reducer motor.

[0011] The beneficial effects of the present application are:

[0012] The self-correcting closed-loop control system composed of the sensor and the data processing system effectively maintains and keeps the cloth width within a certain range of fluctuation, and ensures the cloth quality; when the raw material formula and process parameters are normal, the cloth width can be controlled within 5mm on the basis of ensuring the warp density, weft density and warp and weft strength unchanged. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic view of the overall structure of the present application;

[0014] Figure 2 It is an enlarged view of the A area of the present application; Figure 1

[0015] Figure 3 It is an enlarged view of the B area of the present application; Figure 1

[0016] Figure 4 It is a control principle diagram of the present application.

[0017] In the figure, 1, size ring; 2, cloth piece; 3, lifting roller; 4, speed reducer motor; 5, lead screw; 6, nut; 7, opening and closing mouth; 8, sensor; 801, first sensor; 802, second sensor; 9, transition inclined surface. DETAILED DESCRIPTION

[0018] The following will be described in conjunction with the accompanying drawings Figure 1 to Figure 4 The principle and characteristics of the present application are described, and the examples are only used to explain the present application, and are not used to limit the scope of the present application.

[0019] A variable-diameter size ring, such as Figure 1 — Figure 4 ​​As shown, including the size ring 1 and lifting roller 3, size ring 1 is located at the circular knitting machine weaving mouth, along the circumference of the circular knitting machine warp, weft at the size ring 1 lip open exchange weaving, size ring 1 and the specific installation position and role of lifting roller 3 belong to the technical knowledge of those skilled in the art, not described here. Size ring 1 is a thin-walled metal ring, size ring 1 is provided with an opening 7 in the circumferential direction, size ring 1 due to its low rigidity, by relying on the elasticity of the material itself to change the distance of the opening 7, so as to realize the size of the diameter of the size ring 1, by changing the distance of the opening 7, it can be used to compensate for the change of the diameter during the weaving process. In order to facilitate automatic adjustment during the weaving process, the opening 7 is provided with a lead screw 5 driven by a speed reducer motor 4, specifically, in this embodiment, the speed reducer motor 4 is adjustable, and the speed can be adjusted within 5-50HZ range through the frequency converter controller, the other end is provided with a nut 6 matched with the lead screw 5, the speed reducer motor 4 drives the lead screw 5 to rotate, which can change the meshing position of the lead screw 5 and the nut 6, so as to adjust the distance of the opening 7. In order to make the two ends of the opening 7 joint smoothly, the two ends of the opening 7 are respectively provided with a transition slope 9 at the lap joint surface, of course, a set of protective sleeves can also be sleeved on the two ends of the opening 7 to make the lower cloth 2 transition smoothly.

[0020] Sensor 8 is provided near lifting roller 3 and at the edge position of cloth 2, sensor 8 is two in number, which are defined as first sensor 801 and second sensor 802 respectively, sensor 8 adopts sensor, specifically, the horizontal distance between first sensor 801 and second sensor 802 is equal to one half of the standard deviation value of the cloth 2 diameter, the standard deviation of the diameter is determined as-15mm~+10mm in the industry standard, in this embodiment, the first sensor 801 is used to control the negative tolerance of the cloth 2, its installation position is offset 7.5mm to the inside of the cloth 2 based on the standard diameter of the cloth 2, the second sensor 802 is used to control the positive tolerance of the cloth 2, its installation position is offset 5mm to the outside of the cloth 2 based on the standard diameter of the cloth 2, because the cloth 2 has the nature of automatic centering after the expansion and flattening of the knitting tube, the first sensor 801 and the second sensor 802 are installed at one end of the lifting roller 3 respectively, which can be used to detect the edge position of the passing cloth 2, of course, the position of the first sensor 801 and the second sensor 802 can be adjusted according to the actual diameter deviation demand of the user, the device can control the diameter deviation of the cloth 2 within 5mm.

[0021] The working principle of the device is: when the outer edge of the cloth 2 triggers the first sensor 801 or the second sensor 802 due to size deviation, a detection signal is generated, and the detection signal is amplified by an amplifier and a PLC controller, and is adjusted by a frequency converter controller to make the speed reducer 4 rotate forward or reverse at a certain speed, change the meshing position of the lead screw 5 and the nut 6, thereby changing the diameter of the size ring 1, completing the accurate adjustment of the diameter of the size ring 1, realizing the change of the width size of the cloth 2 within a certain range, and forming an automatic closed-loop control system of the width size of the cloth 2.

[0022] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A variable gauge ring, comprising a gauge ring (1) and a lifting roller (3), the gauge ring (1) is located at the weaving port of a circular knitting machine, the warp yarns entering the circular knitting machine in the circumferential direction are weaved by open-interlacing and inserting weft yarns at the lip of the gauge ring (1), characterized in that: The size ring (1) is a circular ring, which is provided with an opening (7) in the circumferential direction, one end of the opening (7) is provided with a lead screw (5) driven by a speed reducer (4), the other end is provided with a nut (6) matched with the lead screw (5), a sensor (8) is arranged close to the lifting roller (3) and at the edge position of the cloth (2).

2. The variable gage ring of claim 1, wherein: The number of the sensors (8) is two, the two sensors (8) are respectively defined as a first sensor (801) and a second sensor (802), the horizontal direction interval value of the first sensor (801) and the second sensor (802) is equal to one half of the standard deviation value of the cloth (2) folding diameter size.

3. The variable gage ring of claim 1, wherein: The sensor (8) is a photoelectric sensor.

4. The variable gage ring of claim 1, wherein: The size ring (1) is a thin-walled metal circular ring.

5. The variable gage ring of claim 1, wherein: The opening (7) is provided with a transition inclined surface (9) at the lap joint surface of the two end portions.

6. The variable gage ring of claim 1, wherein: The electric signal of the sensor (8) is transmitted to the PLC controller after signal amplification, and the size ring (1) is changed in diameter by adjusting the speed reducer (4) through the frequency converter controller.

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