Silking machine cantilever rotor detection device and thermal state dynamic balance method

Abstract

The invention relates to the technical field of silking machines, in particular to a silking machine cantilever rotor detection device and a thermal state dynamic balance method. Comprising a first vibration sensor arranged on the outer side wall of a box body and located on the side, close to a spinning head, of the box body; the reflective strip is adhered to the circumferential wall of the connecting ring; the pressing piece assembly is arranged on the circumferential wall of the connecting ring and is suitable for pressing the reflective strip on the connecting ring; a detection light beam of the speedometer is located on a rotation path of the reflective strip; and the first vibration sensor and the speedometer are electrically connected with the balancing instrument. The first vibration sensor can collect the vibration condition of the end, close to the spinning head, of the hollow shaft, and the reflective strip and the speedometer are matched to detect the rotating speed of the hollow shaft and the spinning head. The reflective strip can be tightly pressed on the connecting ring through the pressing piece assembly, and the reflective strip is prevented from moving or being separated from the connecting ring.

Description

Technical Field

[0001] The invention relates to the technical field of laying machines, and in particular to a cantilever rotor detection device for a laying machine and a hot dynamic balancing method. Background Art

[0002] The high-speed wire laying machine has a cantilever rotor structure, and the spinning head on the cantilever rotor has an asymmetric structure. At present, the high-speed wire laying machine is dynamically balanced at room temperature before it is put into use, which only solves the problem of dynamic balance of the spinning machine rotor at room temperature. However, the accumulated temperature rise during the continuous high-temperature spinning process will cause uneven thermal expansion of the cantilever spinning head, resulting in the destruction of balance.

[0003] A commonly used improvement method is to perform dynamic balancing when the spinning machine is hot. However, when measuring speed, the reflective strip is usually pasted on the connecting ring. The high-speed running hollow shaft can easily cause the reflective strip to be blown away by the air. Summary of the invention

[0004] Therefore, the present invention aims to overcome the technical problems that need to be solved in the prior art, thereby providing a cantilever rotor detection device for a spinning machine and a thermal dynamic balancing method.

[0005] The present invention provides a cantilever rotor detection device for a spinning machine, which is arranged on a cantilever rotor of the spinning machine, wherein the cantilever rotor comprises a box body and a spinning head, a hollow shaft is rotatably arranged inside the box body, a connecting ring is arranged at one end of the hollow shaft and is connected to the spinning head through the connecting ring, and comprises:

[0006] A first vibration sensor is arranged on the outer side wall of the box body and is located on a side of the box body close to the spinning head;

[0007] A reflective strip is adhered to the circumferential wall of the connecting ring;

[0008] A pressing sheet assembly, arranged on the circumferential wall of the connecting ring, suitable for pressing the reflective strip onto the connecting ring;

[0009] a tachometer, wherein the detection beam of the tachometer is located on the rotation path of the reflective strip;

[0010] The first vibration sensor and the tachometer are both electrically connected to the balancing instrument.

[0011] Furthermore, it also includes:

[0012] The second vibration sensor is arranged on the outer side wall of the box body and is located on a side of the box body away from the spinning head. The second vibration sensor is electrically connected to the balancing instrument.

[0013] Furthermore, the tablet pressing assembly comprises:

[0014] A pressure plate, fixed to the circumferential wall of the connecting ring by fastening bolts;

[0015] A through hole is arranged on the pressing plate and faces the connecting ring. The reflective strip passes through the through hole and two ends of the reflective strip are located between the pressing plate and the connecting ring.

[0016] Furthermore, the cross-section of the through hole is rectangular.

[0017] Furthermore, the tablet pressing assembly also includes:

[0018] The groove is arranged on the circumferential wall of the connecting ring, and the pressing plate and the reflective strip are arranged in the groove.

[0019] A method for hot dynamic balancing of a cantilever rotor of a laying machine, applied to the cantilever rotor detection device of the laying machine as described above, comprises the following steps:

[0020] Step S1, starting the spinning machine to perform high-temperature spinning production, observing that the temperature of the spinning head tends to be stable, and then running the spinning machine without load, collecting initial vibration data of the first vibration sensor and the second vibration sensor when the spinning machine is without load;

[0021] Step S2, the spinning machine is stopped and a balancing test weight is installed on the spinning head;

[0022] Step S3, running the spinning machine without load, collecting vibration data of the first vibration sensor and the second vibration sensor after the installation of the balance test weight;

[0023] Step S4, calculating the balancing weight and phase by a balancing instrument, and installing the balancing weight.

[0024] Furthermore, in the step S2, a balancing test weight is installed on the end surface of the spinning head away from the hollow shaft.

[0025] Furthermore, in step S3, if it is observed that the temperature of the spinning head drops to beyond a preset range, the spinning machine is started to perform high-temperature spinning production until the temperature of the spinning head tends to be stable, and then the spinning machine is idle to collect vibration data of the first vibration sensor and the second vibration sensor.

[0026] Furthermore, it also includes:

[0027] Step S5, running the spinning machine at no load, if the vibration of the spinning machine is not within the ideal range, repeating steps S2-S4 until the vibration of the spinning machine at no load is within the ideal range.

[0028] Furthermore, the temperature of the spinning head is observed by an infrared detection device.

[0029] The technical solution of the present invention has the following advantages:

[0030] The present invention provides a cantilever rotor detection device for a spinning machine, wherein the first vibration sensor can collect the vibration condition of one end of the hollow shaft close to the spinning head, and the reflective strip and the tachometer cooperate to detect the rotation speed of the hollow shaft and the spinning head. The pressing sheet assembly can press the reflective strip against the connecting ring to prevent the reflective strip from shifting or detaching from the connecting ring.

[0031] The invention provides a cantilever rotor detection device for a spinning machine, wherein the second vibration sensor can collect vibration conditions of an end of the hollow shaft away from the spinning head.

[0032] The invention provides a cantilever rotor detection device for a spinning machine, wherein a pressure plate can fix two ends of a reflective strip on a connecting ring, and a detection light beam of a tachometer can detect the reflective strip through a through hole, thereby calculating the rotation speed of the connecting ring.

[0033] The invention provides a cantilever rotor detection device for a spinning machine, wherein a pressure plate and a reflective strip are arranged in the groove, thereby reducing wind resistance and the risk of the reflective strip being blown away when rotating at high speed.

[0034] The present invention provides a method for hot dynamic balancing of a cantilever rotor of a spinning machine. A balancing instrument can calculate the required balancing weight and phase based on initial vibration data of a first vibration sensor and a second vibration sensor and vibration data of the first vibration sensor and the second vibration sensor after installing a balancing test weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a first schematic diagram of the tablet pressing assembly structure of the present invention;

[0038] Figure 3 This is a second schematic diagram of the tablet pressing assembly structure of the present invention;

[0039] Figure 4 It is a schematic diagram of the principle of the present invention;

[0040] Figure 5 It is an initial vibration data diagram of the first vibration sensor and the second vibration sensor when no-load in the present invention;

[0041] Figure 6A vibration data diagram of the first vibration sensor and the second vibration sensor after the balance test weight is installed in the present invention;

[0042] Figure 7 A vibration data diagram of the first vibration sensor and the second vibration sensor after the balancing weight is installed in the present invention;

[0043] Figure 8 A vibration data diagram of the first vibration sensor and the second vibration sensor predicted after the residual unbalance weight is installed according to the present invention after correction;

[0044] Fig. 9 It is a data diagram of the entire thermal dynamic balance process of the present invention.

[0045] Description of reference numerals;

[0046] 1. Box body; 2. Spinning head; 3. Connecting ring; 4. Reflective strip; 5. Pressing plate; 6. Through hole. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0051] Example

[0052] like Figures 1 to 9 A specific embodiment of a cantilever rotor detection device for a spinning machine and a hot dynamic balancing method is shown. The cantilever rotor detection device for a spinning machine is arranged on a cantilever rotor of the spinning machine. The cantilever rotor includes a box body 1 and a spinning head 2. A hollow shaft is rotatably arranged inside the box body 1. A connecting ring 3 is arranged at one end of the hollow shaft and is connected to the spinning head 2 through the connecting ring 3. The connecting ring 3 can be arranged on the outside of the box body 1. The hollow shaft drives the spinning head 2 to rotate, including:

[0053] The first vibration sensor is arranged on the outer wall of the box body 1 and is located on a side of the box body 1 close to the spinning head 2;

[0054] A reflective strip 4 is adhered to the circumferential wall of the connecting ring 3;

[0055] The pressing sheet assembly is arranged on the circumferential wall of the connecting ring 3, and is suitable for pressing the reflective strip 4 onto the connecting ring 3; specifically, the pressing sheet assembly may include two threaded holes arranged on the circumferential wall of the connecting ring 3, and two screws penetrate the reflective strip 4 and are screwed into the threaded holes to fix the reflective strip 4 on the circumferential wall of the connecting ring 3.

[0056] A speedometer, wherein the detection light beam of the speedometer is located on the rotation path of the reflective strip 4; the speedometer may be a photoelectric speedometer.

[0057] The first vibration sensor and the tachometer are both electrically connected to the balancing instrument.

[0058] The first vibration sensor can collect the vibration of the end of the hollow shaft close to the spinning head 2, and the reflective strip 4 cooperates with the tachometer to detect the rotation speed of the hollow shaft and the spinning head 2. The pressing sheet assembly can press the reflective strip 4 against the connecting ring 3 to prevent the reflective strip 4 from shifting or detaching from the connecting ring 3.

[0059] Furthermore, it also includes:

[0060] The second vibration sensor is arranged on the outer wall of the box body 1 and is located on a side of the box body 1 away from the spinning head 2. The second vibration sensor is electrically connected to the balancing instrument. The second vibration sensor can collect vibration conditions on the end of the hollow shaft away from the spinning head 2.

[0061] Furthermore, the tablet pressing assembly comprises:

[0062] A pressure plate 5 is fixed to the circumferential wall of the connecting ring 3 by fastening bolts;

[0063] The through hole 6 is arranged on the pressing plate 5 and faces the connecting ring 3 . The reflective strip 4 passes through the through hole 6 and two ends of the reflective strip 4 are located between the pressing plate 5 and the connecting ring 3 .

[0064] The pressing plate 5 can fix the two ends of the reflective strip 4 on the connecting ring 3 , and the detection light beam of the tachometer can detect the reflective strip 4 through the through hole 6 , and then calculate the rotation speed of the connecting ring 3 .

[0065] Furthermore, the cross section of the through hole 6 is rectangular.

[0066] Furthermore, the tablet pressing assembly also includes:

[0067] The groove is arranged on the circumferential wall of the connecting ring 3, and the pressing plate 5 and the reflective strip 4 are arranged in the groove, so as to reduce the wind resistance and the risk of the reflective strip 4 being blown off when rotating at high speed.

[0068] A method for hot dynamic balancing of a cantilever rotor of a laying machine, applied to the cantilever rotor detection device of the laying machine as described above, comprises the following steps:

[0069] Step S1, start the spinning machine to perform high-temperature spinning production, observe that the temperature of the spinning head 2 tends to be stable, then run the spinning machine without load, and collect initial vibration data of the first vibration sensor and the second vibration sensor when the spinning machine is without load;

[0070] Step S2, the spinning machine is stopped, and a balancing test weight is installed on the spinning head 2;

[0071] Step S3, running the spinning machine without load, collecting vibration data of the first vibration sensor and the second vibration sensor after the installation of the balance test weight;

[0072] Step S4, the balancing weight and phase are calculated by the balancing instrument, and the balancing weight is installed. It should be noted that the phase is centered on the running center of the reflector, and the position of the reflector is 0 phase.

[0073] The balancing instrument can calculate the required balancing weight and phase based on the initial vibration data of the first vibration sensor and the second vibration sensor and the vibration data of the first vibration sensor and the second vibration sensor after the balancing test weight is installed.

[0074] Furthermore, in step S2, a balancing test weight is installed on the end face of the spinning head 2 away from the hollow shaft. It should be noted that the spinning head 2 has an end face close to the hollow shaft and an end face away from the hollow shaft, and the two end faces are connected by a connecting shaft, and the connecting shaft, the two end faces and the axis of the hollow shaft coincide. The spinning tube on the spinning machine passes through the end face of the spinning head 2 close to the hollow shaft and is connected to the end face of the spinning head 2 away from the hollow shaft. The existence of the spinning tube causes the structure of the spinning head 2 to be asymmetric.

[0075] A plurality of threaded holes distributed in an annular pattern may be provided on the end surface, and a plurality of concentric rings provided with threaded holes may also be provided. Different positions in the same annular pattern represent different phases. Generally, the balancing test weight and the balancing counterweight are located on the same annular pattern, and only the weight and phase of the balancing counterweight are adjusted. The balancing test weight may be fixed between the nut and the end surface of the spinning head 2 by means of bolts penetrating the balancing test weight and being screwed to the threaded holes.

[0076] Furthermore, in step S3, if it is observed that the temperature of the spinning head 2 drops to beyond a preset range, generally not lower than -10°C of the stable temperature of the spinning head 2, the spinning machine is started to perform high-temperature spinning production until the temperature of the spinning head 2 tends to stabilize, and then the spinning machine is idle to collect vibration data of the first vibration sensor and the second vibration sensor.

[0077] Furthermore, it also includes:

[0078] Step S5, running the spinning machine without load, if the vibration of the spinning machine is not within the ideal range, generally, the amplitude within the ideal range is 10um, then repeat steps S2-S4 until the vibration of the spinning machine without load is within the ideal range.

[0079] Furthermore, the temperature of the spinning head 2 is observed by an infrared detection device.

[0080] Specifically, Figure 5 As shown, it is the initial vibration data of the first vibration sensor and the second vibration sensor when no-load, channel 1 corresponds to the first vibration sensor, and channel 2 corresponds to the second vibration sensor. Figure 6 It is the vibration data of the first vibration sensor and the second vibration sensor after the balancing test weight is installed. Figure 7 It is the vibration data of the first vibration sensor and the second vibration sensor after the balancing weight is installed. Figure 8 It is a diagram of the residual unbalance weight after the correction in step 5 and the vibration data of the first vibration sensor and the second vibration sensor predicted after the residual unbalance weight is installed. Fig. 9 It is the data of the whole hot dynamic balancing process. It can be known that the balancing test weight and the balancing counterweight are mainly used to adjust and vibrate the vibration at the first vibration sensor.

[0081] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A cantilever rotor detection device for a spinning machine, arranged on a cantilever rotor of the spinning machine, the cantilever rotor comprising a housing (1) and a spinning head (2), a hollow shaft being rotatably arranged inside the housing (1), a connecting ring (3) being arranged at one end of the hollow shaft and connected to the spinning head (2) via the connecting ring (3), characterized in that: include: A first vibration sensor is arranged on the outer wall of the box body (1) and is located on a side of the box body (1) close to the spinning head (2); A reflective strip (4) is adhered to the circumferential wall of the connecting ring (3); A pressing sheet assembly, arranged on the circumferential wall of the connecting ring (3), suitable for pressing the reflective strip (4) onto the connecting ring (3); a tachometer, wherein a detection light beam of the tachometer is located on the rotation path of the reflective strip (4); The first vibration sensor and the tachometer are both electrically connected to the balancing instrument.

2. The cantilever rotor detection device for a laying head according to claim 1, characterized in that: Also includes: The second vibration sensor is arranged on the outer wall of the box body (1) and is located on a side of the box body (1) away from the spinning head (2). The second vibration sensor is electrically connected to the balancing instrument.

3. The cantilever rotor detection device for a laying head according to claim 1, characterized in that: The tablet pressing assembly comprises: A pressure plate (5) is fixed on the circumferential wall of the connecting ring (3) by means of fastening bolts; A through hole (6) is arranged on the pressing plate (5) and faces the connecting ring (3); the reflective strip (4) passes through the through hole (6) and two ends of the reflective strip (4) are located between the pressing plate (5) and the connecting ring (3).

4. The cantilever rotor detection device for a laying head according to claim 3, characterized in that: The cross section of the through hole (6) is rectangular.

5. The cantilever rotor detection device for a laying head according to claim 3, characterized in that: The tablet pressing assembly also includes: A groove is arranged on the circumferential wall of the connecting ring (3), and the pressing plate (5) and the reflective strip (4) are arranged in the groove.

6. A method for thermal dynamic balancing of a cantilever rotor of a laying machine, applied to the cantilever rotor detection device of a laying machine as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step S1, starting the spinning machine to perform high-temperature spinning production, observing that the temperature of the spinning head (2) tends to be stable, and then operating the spinning machine without load, collecting initial vibration data of the first vibration sensor and the second vibration sensor when the spinning machine is without load; Step S2, the spinning machine is stopped, and a balancing test weight is installed on the spinning head (2); Step S3, running the spinning machine without load, collecting vibration data of the first vibration sensor and the second vibration sensor after the installation of the balance test weight; Step S4, calculating the balancing weight and phase by a balancing instrument, and installing the balancing weight.

7. The method for hot dynamic balancing of a cantilever rotor of a laying machine according to claim 6, characterized in that: In the step S2, a balancing test weight is installed on the end surface of the spinning head (2) away from the hollow shaft.

8. The method for hot dynamic balancing of a cantilever rotor of a laying machine according to claim 6, characterized in that: In step S3, if it is observed that the temperature of the spinning head (2) drops to a value beyond a preset range, the spinning machine is started to perform high-temperature spinning production until the temperature of the spinning head (2) tends to be stable, and then the spinning machine is idle to collect vibration data of the first vibration sensor and the second vibration sensor.

9. The method for hot dynamic balancing of a cantilever rotor of a laying machine according to claim 6, characterized in that: Also includes: Step S5, running the spinning machine at no load, if the vibration of the spinning machine is not within the ideal range, repeating steps S2-S4 until the vibration of the spinning machine at no load is within the ideal range.

10. The method for hot dynamic balancing of a cantilever rotor of a laying head according to claim 6, characterized in that: The temperature of the spinning head (2) is observed by an infrared detection device.

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