Superfine linear density detection device and superfine linear density detection method

Abstract

The invention provides a superfine line density detection device and a superfine line density detection method, and relates to the technical field of superfine lines. The superfine wire density detection device is used for detecting the density of a superfine wire and comprises a pay-off assembly, a take-up assembly, an air filtering assembly and a liquid tank, the liquid tank is used for containing detection liquid, the pay-off assembly is located outside the liquid tank, the superfine wire is wound around the pay-off assembly, the take-up assembly is located inside the liquid tank, and the air filtering assembly is located in the liquid tank. A superfine wire on the pay-off assembly is connected to the take-up assembly through the air filtering assembly, and the take-up assembly can store the superfine wire on the pay-off assembly to the take-up assembly; the air filtering assembly can enable the detection liquid in the liquid groove to be attached to the surface of the superfine wire so as to remove air adsorbed to the surface of the superfine wire. According to the superfine linear density detection device, the problem that the superfine linear density cannot be accurately and reliably measured due to the fact that the superfine linear density can adsorb a large number of bubbles when being directly put into liquid can be solved.

Description

Technical Field

[0001] The present application relates to the field of ultrafine wire technology, and in particular to an ultrafine wire density detection device and an ultrafine wire density detection method. Background Art

[0002] Density is a very important physical quantity, which describes the density of a substance. The quality of a product can be monitored by testing the density of the material. Bonding wire is an ultra-fine metal wire obtained by drawing a metal billet step by step. During the drawing process, the material undergoes plastic deformation through slip, twinning, and grain boundary sliding. Improper processing technology will form micro voids or inclusions inside the bonding wire, causing the material density to change during processing. By testing the density of the bonding wire product, the quality of the product can be indirectly monitored; by comparing with the theoretical density, it can provide guidance for improving the performance of the bonding wire. Therefore, the density detection of the bonding wire is very important for the production of the bonding wire.

[0003] The density of metal block materials is usually measured based on the Archimedean displacement method. The basic steps are to first measure the mass of the material in the air, then measure the density of the material in the liquid, and obtain the volume of the material through the mass difference and the known density of the liquid, thereby calculating the density of the material. When measuring the mass of the material in the liquid, the material is usually directly placed in the liquid. The key to accurate measurement is to ensure that there are no bubbles adsorbed on the surface of the material.

[0004] However, ultrafine wires such as bonding wires have a large surface area. If the ultrafine wires are directly placed in liquid, the ultrafine wires will absorb a large number of bubbles, resulting in the inability to accurately and reliably measure the ultrafine wire density. Summary of the invention

[0005] In view of this, the present application provides an ultrafine wire density detection device to solve the problem that when the ultrafine wire is directly put into the liquid, the ultrafine wire will absorb a large amount of bubbles, resulting in the inability to accurately and reliably measure the ultrafine wire density.

[0006] According to one aspect of the present application, there is provided an ultrafine wire density detection device, which is used to detect the density of the ultrafine wire, and comprises a wire-releasing assembly, a wire-receiving assembly, an air filter assembly and a liquid tank, wherein the liquid tank is used to contain a detection liquid, the wire-releasing assembly is located outside the liquid tank, the ultrafine wire is wound around the wire-releasing assembly, the wire-receiving assembly is located inside the liquid tank, the ultrafine wire on the wire-releasing assembly is connected to the wire-receiving assembly via the air filter assembly, and the wire-receiving assembly can receive the ultrafine wire on the wire-releasing assembly onto the wire-receiving assembly;

[0007] The air filter component can attach the detection liquid in the liquid tank to the surface of the ultra-fine wire to remove the air adsorbed on the surface of the ultra-fine wire.

[0008] Preferably, the air filter assembly includes a first air filter mechanism, the first air filter mechanism includes a guide member and an air filter member, the guide member is connected to the liquid tank, the guide member encloses a guide space, the air filter member includes an inlet hole and an outlet hole, and the ultra-fine wire is connected to the wire collection assembly through the inlet hole and the outlet hole in sequence;

[0009] The guide member is provided with a first guide hole, which is connected to the guide space. The first guide hole and the wire inlet hole are located on the same side of the air filter. The angle between the extension direction of the wire inlet hole and the extension direction of the first guide hole is 30 degrees to 60 degrees.

[0010] Preferably, the air filter element comprises an inlet portion, an air filter portion and an outlet portion connected in sequence, the inlet portion comprises the inlet hole, the outlet portion comprises the outlet hole, the air filter portion encloses an air filter space, and the inlet hole and the outlet hole are both connected to the air filter space;

[0011] The air filter portion is located inside the guide space, at least part of the line inlet portion and at least part of the line outlet portion are located outside the guide space, a second guide hole is provided on the air filter portion, and the air filter space is connected to the guide space through the second guide hole.

[0012] Preferably, the air filter assembly includes a second air filter mechanism, which includes an ultrasonic generator and a vibration mechanism. The ultrasonic generator is located inside the liquid tank, and the vibration mechanism is connected to the ultrasonic generator. The vibration mechanism includes a vibration hole, and the ultrafine wire passes through the vibration hole.

[0013] Preferably, the ultra-fine wire density detection device further comprises a wire arrangement assembly, the wire arrangement assembly comprises a third driving member and a wire arrangement mechanism, the wire arrangement mechanism is provided with a wire arrangement hole, and the ultra-fine wire passes through the wire arrangement hole;

[0014] A plane perpendicular to the direction of gravity is defined as a reference plane, and the third driving member can drive the cable arranging mechanism to swing so that the angle between the axis of the cable arranging hole and the reference plane varies between -15 degrees and 15 degrees.

[0015] Preferably, the ultrafine wire density detection device also includes a tensioning assembly, which includes a mounting member, a first tensioning wheel, a second tensioning wheel and a first driving member, the first driving member is connected to the mounting member so that the first driving member can drive the mounting member to rotate, the first tensioning wheel and the second tensioning wheel are arranged on the mounting member at intervals, and the ultrafine wire passes through the first tensioning wheel and the second tensioning wheel in sequence.

[0016] Preferably, the ultrafine wire density detection device further comprises a weighing assembly, the weighing assembly comprises a hanging basket, and the hanging basket is arranged below the wire take-up assembly in the direction of gravity;

[0017] The wire take-up assembly comprises a second driving member, a fixing member, a first airbag, a locking plate and a plurality of winding plates, wherein the second driving member is connected to the fixing member so that the second driving member can drive the fixing member to rotate, the winding plate is hinged to the fixing member, the plurality of winding plates are surrounded for one circle, the plurality of winding plates enclose an installation space, the first airbag is arranged in the installation space, and the first airbag can be contracted or expanded so that the plurality of winding plates move toward the inside of the installation space or move toward the outside of the installation space;

[0018] At least one of the winding sheets is correspondingly provided with the locking sheet, and the locking sheet can abut against a side of the winding sheet corresponding to the locking sheet that faces away from the accommodating space.

[0019] Preferably, the locking plate comprises an abutment surface, the abutment surface can abut against a side of the winding plate facing away from the accommodation space, and the angle between the abutment surface and a plane parallel to the gravity direction is 1 degree to 3 degrees.

[0020] Preferably, the wire taking-up assembly further includes a connecting member and a plurality of elastic members, the plurality of elastic members corresponding one-to-one to the plurality of winding sheets, one end of the elastic member being connected to the winding sheet corresponding to the elastic member, the other end of the elastic member being connected to the connecting member, and the elastic member being extended.

[0021] According to another aspect of the present application, a method for detecting the density of an ultrafine wire is provided. The method for detecting the density of an ultrafine wire is to detect the density of the ultrafine wire by using the ultrafine wire density detection device described above. The method for detecting the density of an ultrafine wire comprises:

[0022] S1. obtaining a first mass of the ultrafine wire in air;

[0023] S2, guiding the thread ends of the ultra-fine wires on the wire-releasing assembly to between the locking piece and the winding piece corresponding to the locking piece through the air filter assembly, and expanding the first airbag to make the locking piece and the winding piece corresponding to the locking piece abut against each other to clamp the thread ends;

[0024] S3, injecting the detection liquid into the liquid tank so that the wire take-up assembly is immersed in the detection liquid, and recording the preset position of the liquid level of the detection liquid;

[0025] S4, clearing the weighing component;

[0026] S5, the second driving member drives the fixing member to rotate so that the ultrafine wire is wound onto the plurality of winding sheets. During the winding process of the ultrafine wire, the air filter assembly attaches the detection liquid to the surface of the ultrafine wire to remove the air adsorbed on the surface of the ultrafine wire;

[0027] S6, the first airbag contracts to move the plurality of winding sheets toward the inside of the placement space, the ultra-fine wires wound on the plurality of winding sheets fall into the hanging basket, and the liquid level of the detection liquid drops;

[0028] S6, the first airbag expands to raise the liquid level of the detection liquid to the preset position;

[0029] S7. The weighing component weighs the ultrafine wire to obtain the second mass of the ultrafine wire in the detection liquid, the difference between the first mass and the second mass is the third mass, and the density of the ultrafine wire is equal to the ratio of the product of the first mass and the density of the detection liquid to the third mass.

[0030] When using the ultrafine wire density detection device of the present application to detect the ultrafine wire density, the ends of the ultrafine wires on the pay-off assembly are connected to the take-up assembly through the air filter assembly, and then the detection liquid is injected into the liquid tank so that the take-up assembly is completely immersed in the detection liquid. The take-up assembly then gradually collects the ultrafine wires on the pay-off assembly onto the take-up assembly. During the process of collecting the ultrafine wires, the air filter assembly can make the detection liquid adhere to the surface of the ultrafine wires, thereby avoiding a large number of bubbles adhering to the surface of the ultrafine wires when the ultrafine wires enter the detection liquid, thereby improving the measurement accuracy of the ultrafine wire density. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram showing an ultra-fine wire detection device according to an embodiment of the present invention;

[0033] Figure 2 A schematic diagram showing the structure of the interior of a liquid tank of an ultra-fine wire detection device;

[0034] Figure 3 A schematic diagram showing the structure of the pay-off assembly;

[0035] Figure 4 A schematic diagram showing the structure of the tensioning assembly;

[0036] Figure 5 A schematic structural diagram of a first air filtering mechanism is shown;

[0037] Figure 6 A schematic plan view showing a partial structure of the first air filtering mechanism;

[0038] Figure 7 Show Figure 6 A cross-sectional view of a partial structure of the first air filtering mechanism in the embodiment of the present invention obtained by cutting along the line A-A';

[0039] Figure 8 A schematic structural diagram of a second air filtering mechanism is shown;

[0040] Fig. 9 A schematic diagram showing the structure of the cable assembly;

[0041] Fig.10 A schematic diagram showing the structure of a weighing assembly is shown;

[0042] Fig.11 A diagram showing the relative positions of the air supply assembly and the wire take-up assembly;

[0043] Fig.12 A schematic diagram showing the structure of the wire take-up assembly;

[0044] Fig.13 Show Fig.12 A magnified view of part B;

[0045] Fig.14 A cross-section of the locking element is shown.

[0046] Icons: 1-pay-off assembly; 11-pay-off motor; 12-axle seat; 13-spool; 2-tensioning assembly; 21-mounting member; 22-first tensioning wheel; 23-second tensioning wheel; 24-first driving member; 25-rotating shaft; 3-first air filter mechanism; 31-connecting member; 311-highest liquid level mark; 312-lowest liquid level mark; 32-guide member; 321-first guide hole; 33-air filter; 331-inlet; 332-filter Gas section; 3321-second guide hole; 333-outlet; 34-guide space; 35-filter space; 36-inlet hole; 37-outlet hole; 38-connection pipe; 39-high pressure pump; 4-second filter mechanism; 41-ultrasonic generator; 42-vibration mechanism; 421-amplifier; 422-guide head; 423-vibration block; 424-vibration hole; 5-wire arrangement assembly; 51-third drive member; 52-wire arrangement mechanism; 521- Rocker arm; 522-wire arrangement member; 523-wire arrangement hole; 6-wire collection assembly; 61-second driving member; 62-fixing member; 63-first airbag; 64-locking plate; 65-winding plate; 66-connecting member; 67-elastic member; 681-first hinge block; 682-second hinge block; 683-hinge shaft; 69-placement space; 7-air supply assembly; 71-second airbag; 72-deflation valve; 73-air supply pipe; 74-pneumatic rotary joint ;8-weighing assembly;81-weighing balance;82-hanging basket bracket;83-hanging basket;91-base;92-bracket;93-frame;94-liquid tank;941-scale line;951-first support rod;952-first guide wheel;961-second support rod;962-second guide wheel;971-third support rod;972-third guide wheel;98-ultra-fine wire;A1-reference plane;A2-abutment surface;A3-reference plane. DETAILED DESCRIPTION

[0047] According to one aspect of the present application, a device for detecting ultrafine line density is provided, such as Figures 1 to 14 As shown, the ultrafine wire density detection device is used to detect the density of the ultrafine wire 98, and the ultrafine wire density detection device includes a wire pay-out component 1, a wire take-up component 6, an air filter component and a liquid tank 94, the liquid tank 94 is used to contain the detection liquid, the wire pay-out component 1 is located outside the liquid tank 94, the ultrafine wire 98 is wound around the wire pay-out component 1, the wire take-up component 6 is located inside the liquid tank 94, the ultrafine wire 98 on the wire pay-out component 1 is connected to the wire take-up component 6 via the air filter component, and the wire take-up component 6 can receive the ultrafine wire 98 on the wire pay-out component 1 onto the wire take-up component 6; the air filter component can attach the detection liquid in the liquid tank 94 to the surface of the ultrafine wire 98 to remove the air adsorbed on the surface of the ultrafine wire 98.

[0048] When using the ultrafine wire density detection device of the present application to detect the ultrafine wire density, the end of the ultrafine wire 98 on the pay-off assembly 1 is passed through the air filter assembly and connected to the take-up assembly 6, and then the detection liquid is injected into the liquid tank 94, so that the take-up assembly 6 is completely immersed in the detection liquid. After that, the take-up assembly 6 gradually collects the ultrafine wire 98 on the pay-off assembly 1 onto the take-up assembly 6. During the process of the ultrafine wire 98 being collected, the air filter assembly can make the detection liquid adhere to the surface of the ultrafine wire 98, thereby avoiding a large number of bubbles adhering to the surface of the ultrafine wire 98 when the ultrafine wire 98 enters the detection liquid, thereby improving the measurement accuracy of the density of the ultrafine wire 98.

[0049] Optionally, the ultra-fine wire 98 may be an ultra-fine metal wire obtained by step-by-step drawing of a metal billet such as a bonding wire.

[0050] like Figure 1 and Figure 2 As shown, the ultrafine wire density detection device includes a base 91, a bracket 92 and a frame 93. The base 91 can be placed on the plane of the test bench or on the ground. A space for accommodating the weighing balance 81 of the weighing assembly 8 is formed between the bracket 92 and the base 91. The liquid tank 94 is arranged on the bracket 92, so that the liquid tank 94 is supported by the bracket 92. The frame 93 is fixed on the base 91, and part of the frame 93 extends into the liquid tank 94 through the top of the liquid tank 94. The frame 93 is used to fix the pay-off assembly 1, the take-up assembly 6, the air filter assembly, and the tensioning assembly 2 and the arranging assembly 5 described below.

[0051] Preferably, the liquid tank 94 is made of transparent glass or acrylic material, and a plurality of scale lines 941 are arranged in the liquid tank 94, and each scale line 941 corresponds to a scale value, so that the operator can read the liquid level of the detection liquid in the liquid tank 94. The detection liquid can be water, kerosene, etc. The detection liquid has the characteristics of being non-volatile, having a stable density, and having good wettability with the ultra-fine wire 98, so that the detection liquid can be attached to the surface of the ultra-fine wire 98 through the air filter component to remove the air adsorbed on the surface of the ultra-fine wire 98.

[0052] In the embodiments of the present application, Figure 3 As shown, the pay-off assembly 1 includes a pay-off motor 11 and a shaft seat 12, the pay-off motor 11 is fixed on the frame 93, and the pay-off assembly 1 is located above the liquid tank 94, and the shaft seat 12 is connected to the output shaft of the pay-off motor 11, so that the shaft seat 12 can rotate under the drive of the pay-off motor 11, and the spool 13 wound with the ultra-fine wire 98 to be detected is installed on the shaft seat 12. In this way, the pay-off motor 11 rotates, and the spool 13 can be driven to rotate to release the ultra-fine wire 98 on the spool 13.

[0053] like Figure 2 and Figure 4As shown, the ultra-fine wire density detection device also includes a tensioning assembly 2, which includes a mounting member 21, a first tensioning wheel 22, a second tensioning wheel 23 and a first driving member 24. The first driving member 24 is fixed on the frame 93, and the first driving member 24 is connected to the mounting member 21 through a rotating shaft 25, so that the first driving member 24 can drive the mounting member 21 to rotate. The first tensioning wheel 22 and the second tensioning wheel 23 are arranged on the mounting member 21 at intervals, and the ultra-fine wire 98 passes through the first tensioning wheel 22 and the second tensioning wheel 23 in sequence. In this way, by driving the mounting member 21 to rotate through the first driving member 24, the deflection angle of the mounting member 21 can be adjusted to generate torque on the first tensioning wheel 22 and the second tensioning wheel 23, thereby generating tension on the ultra-fine wire 98 to tension the ultra-fine wire 98.

[0054] Preferably, the first drive member 24 is a brushless DC motor based on FOC control (Field-Oriented Control, also known as vector control). The brushless DC motor based on FOC control has the advantages of smooth torque output, good dynamic response, wide speed range, high control accuracy and easy closed-loop control, which enables the first drive member 24 to provide stable torque. The brushless DC motor can be connected to an industrial computer so that the industrial computer can control the magnitude of the current input to the brushless DC motor to control the magnitude of the torque, thereby achieving control of the tension. At the same time, the industrial computer is connected to the brushless DC motor so that the industrial computer can obtain the angular position information of the rotating shaft 25 connected to the brushless DC motor. The pay-off motor 11 is also connected to the industrial computer so that the industrial computer can control the speed of the pay-off motor 11 to achieve control of the pay-off speed of the ultra-fine wire 98. The brushless DC motor can drive the rotating shaft 25 to rotate rapidly between ±90° so as to quickly tighten or relax the ultra-fine wire 98 when the tension changes suddenly, so as to achieve rapid adjustment of the tension. Specifically, after the end of the ultrafine wire 98 on the pay-off assembly 1 is passed through the air filter assembly and connected to the take-up assembly 6, the ultrafine wire 98 can be tensioned by controlling the current of the brushless DC motor. During the process of the take-up assembly 6 taking up the wire, if the ultrafine wire 98 is tightened, the tension between the ultrafine wire 98 and the first tensioning wheel 22 and the second tensioning wheel 23 increases. At this time, the rotating shaft 25 can rotate counterclockwise to reduce the tension between the ultrafine wire 98 and the first tensioning wheel 22 and the second tensioning wheel 23. Thereby, the ultrafine wire 98 is relaxed, and the industrial computer can control the rotation speed of the pay-off motor 11 to increase so as to increase the pay-off speed; if the ultrafine wire 98 is relaxed, the tension between the ultrafine wire 98 and the first tensioning wheel 22 and the second tensioning wheel 23 is reduced, and the rotating shaft 25 can rotate clockwise to increase the tension between the ultrafine wire 98 and the first tensioning wheel 22 and the second tensioning wheel 23, so as to tighten the ultrafine wire 98, and the industrial computer can control the rotation speed of the pay-off motor 11 to be smaller so as to reduce the pay-off speed.

[0055] Optionally, the industrial computer can control the magnitude of the current input into the brushless DC motor based on the tension required for the ultra-fine wire 98 .

[0056] In the embodiment of the present application, the air filter assembly includes a first air filter mechanism 3, such as Figure 5 , Figure 6 and Figure 7 As shown, the first air filter mechanism 3 includes a connecting member 31, a guide member 32 and an air filter member 33. The guide member 32 encloses a guide space 34. The guide member 32 is connected to the connecting member 31. The connecting member 31 can be connected to the liquid tank 94 through a connecting pipe 38, so that the detection liquid in the liquid tank 94 can enter the guide space 34. The air filter member 33 includes an inlet hole 36 and an outlet hole 37. The ultra-fine wire 98 is connected to the wire take-up assembly 6 through the inlet hole 36 and the outlet hole 37 in sequence; the guide member 32 is provided with a first guide hole 321. The first guide hole 321 and the inlet hole 36 are located on the same side of the air filter member 33. The angle α between the extension direction of the inlet hole 36 and the extension direction of the first guide hole 321 is 30 degrees to 60 degrees. In this way, part of the detection liquid in the guide space 34 can be sprayed onto the ultrafine wire 98 located above the first guide hole 321 through the first guide hole 321 to break through the interface between the air and the ultrafine wire 98, so that the detection liquid can adhere to the ultrafine wire 98 to achieve the effect of preliminary separation of the ultrafine wire 98 and the air.

[0057] Preferably, the inlet hole 36 and the outlet hole 37 are parallel to the gravity direction, and the angle α between the extension direction of the inlet hole 36 and the extension direction of the first guide hole 321 is 45 degrees. There are multiple first guide holes 321, which are arranged in a circle along the circumference of the guide member 32.

[0058] Optionally, the connecting member 31 and the guiding member 32 may be integrally formed.

[0059] like Figure 2 As shown, a first guide wheel 952 may be provided between the first air filtering mechanism 3 and the tensioning assembly 2 . The first guide wheel 952 is fixed to the frame 93 via a first support rod 951 , and the ultra-fine wire 98 passes through the first guide wheel 952 .

[0060] Furthermore, the first air filtering mechanism 3 also includes a high-pressure pump 39 , and the connecting pipe 38 is connected to the liquid tank 94 through the high-pressure pump 39 . When the high-pressure pump 39 is working, the high-pressure detection liquid can enter the guide space 34 through the connecting pipe 38 and the connecting piece 31 .

[0061] like Figure 6 and Figure 7As shown, the air filter 33 includes an inlet portion 331, an air filter portion 332 and an outlet portion 333 connected in sequence, the inlet portion 331 includes an inlet hole 36, the outlet portion 333 includes an outlet hole 37, the air filter portion 332 surrounds an air filter space 35, and the inlet hole 36 and the outlet hole 37 are both connected to the air filter space 35, so that the ultra-fine wire 98 can extend to the wire collection assembly 6 through the inlet hole 36, the air filter space 35 and the outlet hole 37. The diameter of the inlet hole 36 and the diameter of the outlet hole 37 are slightly larger than the diameter of the ultra-fine wire 98, so that the ultra-fine wire 98 can pass through. The inlet portion 331 and the outlet portion 333 can be silicone bushings to prevent the ultra-fine wire 98 from being damaged when passing through the inlet hole 36 and the outlet hole 37.

[0062] Furthermore, the air filter portion 332 is cylindrical, and is located inside the guide space 34, and a portion of the inlet portion 331 and a portion of the outlet portion 333 are located outside the guide space 34. A second guide hole 3321 is provided on the air filter portion 332, and the air filter space 35 is connected to the guide space 34 through the second guide hole 3321. In this way, another part of the high-pressure detection liquid entering the guide space 34 can enter the air filter space 35 through the second guide hole 3321. After the high-pressure detection liquid fills the air filter space 35, the high-pressure detection liquid is ejected through the inlet hole 36 and the outlet hole 37. The high-pressure detection liquid ejected from the inlet hole 36 wraps the ultra-fine wire 98 and is ejected. The high-pressure detection liquid ejected from the inlet hole 36 can form an intersection with the high-pressure detection liquid ejected from the first guide hole 321. In this way, after the high-pressure detection liquid sprayed from the first guide hole 321 breaks through the interface between the air and the ultrafine wire 98, the high-pressure detection liquid sprayed from the wire inlet hole 36 covers the ultrafine wire 98, so that the detection liquid adheres to the ultrafine wire 98 to prevent the ultrafine wire 98 from contacting the air.

[0063] like Figure 5 As shown, the connector 31 is provided with a maximum liquid level mark 311 and a minimum liquid level mark 312, the minimum liquid level mark 312 is higher than the lower surface of the outlet portion 333, the maximum liquid level mark 311 is lower than the height of the first guide hole 321, and the liquid level of the detection liquid in the liquid tank 94 needs to be between the maximum liquid level mark 311 and the minimum liquid level mark 312. In this way, the detection liquid can be prevented from clogging the first guide hole 321, and the ultra-fine wire 98 removed from the outlet hole 37 is immersed in the detection liquid.

[0064] Preferably, the plurality of first guide holes 321 surround the wire inlet portion 331 .

[0065] like Figure 2 and Figure 8As shown, the air filter assembly includes a second air filter mechanism 4, which includes an ultrasonic generator 41 and a vibration mechanism 42. The ultrasonic generator 41 is located inside the liquid tank 94, and the vibration mechanism 42 is connected to the ultrasonic generator 41. The vibration mechanism 42 includes a vibration hole 424, and the ultrafine wire 98 passes through the vibration hole 424. In this way, the ultrasonic generator 41 can make the vibration mechanism 42 generate low-amplitude high-frequency vibration, thereby making the ultrafine wire 98 vibrate to remove tiny bubbles on the ultrafine wire 98.

[0066] Optionally, a second guide wheel 962 and a second support rod 961 may be provided between the first air filtering mechanism 3 and the second air filtering mechanism 4 , the second guide wheel 962 is fixed to the frame 93 via the second support rod 961 , and the ultra-fine wire 98 passes through the second guide wheel 962 .

[0067] Furthermore, the vibration mechanism 42 may include a variable amplitude rod 421, a guide head 422 and a vibration block 423. The ultrasonic generator 41 is fixed on the frame 93. One end of the variable amplitude rod 421 is connected to the ultrasonic generator 41. The other end of the variable amplitude rod 421 is connected to the guide head 422. A mounting hole is provided on the guide head 422. The vibration block 423 is embedded in the mounting hole. A vibration hole 424 is provided on the vibration block 423. The diameter of the vibration hole 424 is slightly larger than the diameter of the ultra-fine wire 98. The edges of the vibration hole 424 are chamfered and polished to prevent the ultra-fine wire 98 from being damaged.

[0068] Optionally, the guide head 422 may vibrate in a first vibration direction and a second vibration direction, wherein the first vibration direction is parallel to the extension direction of the horn 421 , and the second vibration direction is perpendicular to the first vibration direction and perpendicular to the gravity direction.

[0069] Preferably, the vibration block 423 is made of sapphire.

[0070] In the embodiments of the present application, Figure 2 and Fig. 9 As shown, the ultrafine wire density detection device also includes a wire arrangement assembly 5, which includes a third driving member 51 and a wire arrangement mechanism 52. The wire arrangement mechanism 52 is provided with a wire arrangement hole 523, and the ultrafine wire 98 passes through the wire arrangement hole 523; the plane perpendicular to the gravity direction is defined as the reference plane A1, and the third driving member 51 can drive the wire arrangement mechanism 52 to swing so that the angle β between the axis of the wire arrangement hole 523 and the reference plane A1 changes between -15 degrees and 15 degrees. In this way, the ultrafine wire 98 can be arranged up and down on the take-up assembly 6 through the wire arrangement assembly 5.

[0071] It should be noted that Fig. 9The dotted part shown in the figure is the state of the wire arranging mechanism 52 when it is in two extreme positions. When the wire arranging mechanism 52 is in one of the extreme positions, the angle β between the axis of the wire arranging hole 523 and the reference plane A1 is -15 degrees. When the wire arranging mechanism 52 is in the other extreme position, the angle β between the axis of the wire arranging hole 523 and the reference plane A1 is 15 degrees.

[0072] Optionally, a third guide wheel 972 and a third support rod 971 may be provided between the cable assembly 5 and the second air filtering mechanism 4 , the third guide wheel 972 is fixed to the frame 93 via the third support rod 971 , and the ultra-fine wire 98 passes through the third guide wheel 972 .

[0073] Furthermore, the third driving member 51 is a servo motor, and the cable arrangement mechanism 52 includes a rocker arm 521 and a cable arrangement member 522. The rocker arm 521 is connected to the output shaft of the servo motor, a fixing hole is provided on the rocker arm 521, and the cable arrangement member 522 is embedded in the fixing hole. A cable arrangement hole 523 is provided on the cable arrangement member 522, and the edge of the cable arrangement hole 523 is rounded and polished to prevent the ultra-fine wire 98 from being damaged. The third driving member 51 is connected to the industrial computer, and the industrial computer can control the angle between the axis of the cable arrangement hole 523 and the reference plane A1 to change within different ranges based on the required cable arrangement spacing.

[0074] Preferably, the wiring member 522 is made of sapphire.

[0075] In the embodiments of the present application, Figure 2 and Fig.10 As shown, the ultrafine wire density detection device also includes a weighing component 8, which includes a hanging basket 83. The hanging basket 83 is arranged below the wire taking-up component 6 in the direction of gravity, so that the ultrafine wire 98 released from the wire taking-up component 6 can fall on the hanging basket 83.

[0076] Further, the weighing assembly 8 includes a weighing scale 81, a hanging basket bracket 82 and a hanging basket 83. The hanging basket bracket 82 is placed on the weighing plate of the weighing scale 81. The weighing scale 81 selects a scale with high measurement accuracy and a suitable range. The hanging basket 83 is connected to the hanging basket bracket 82 and placed in the liquid tank 94. The hanging basket 83 is placed below the wire take-up assembly 6. When the wire take-up assembly 6 releases the wound ultrafine wire 98, the ultrafine wire 98 falls into the hanging basket 83 to weigh the weight of the ultrafine wire 98 in the liquid.

[0077] like Fig.11 and Fig.12As shown, the wire taking-up assembly 6 includes a second driving member, a fixed member 62, a first airbag 63, a locking plate 64 and a plurality of winding plates 65. The second driving member is connected to the fixed member 62 so that the second driving member can drive the fixed member 62 to rotate. The winding plates 65 are hinged to the fixed member 62. The plurality of winding plates 65 are arranged around the circumference of the fixed member 62. When the second driving member drives the fixed member 62 and the plurality of winding plates 65 to rotate, the ultrafine wire 98 is wound around the plurality of winding plates 65.

[0078] Alternatively, if Fig.13 As shown, each winding sheet 65 may be provided with a first hinge block 681, and each first hinge block 681 is correspondingly provided with two second hinge blocks 682, the two second hinge blocks 682 are spaced apart on the fixing member 62, the first hinge block 681 extends between the two second hinge blocks 682, and the hinge shaft 683 passes through the first hinge block 681 and the two second hinge blocks 682, so that the winding sheet 65 can rotate relative to the fixing member 62.

[0079] Preferably, the second driving member may be a servo motor, the fixing member 62 is in a disc shape, and the output shaft of the servo motor is connected to the fixing member 62 to drive the fixing member 62 to rotate.

[0080] like Fig.12 As shown, a plurality of winding sheets 65 enclose a placement space 69, a first airbag 63 is disposed in the placement space 69, and the first airbag 63 can shrink or expand so that the plurality of winding sheets 65 move toward the inside of the placement space 69 or move toward the outside of the placement space 69; at least one winding sheet 65 is correspondingly provided with a locking sheet 64, and when the plurality of winding sheets 65 move toward the outside of the placement space 69, the locking sheet 64 can abut against the side of the winding sheet 65 corresponding to the locking sheet 64 that is opposite to the placement space 69, thereby fixing the end of the ultra-fine wire 98 between the locking sheet 64 and the winding sheet 65. At the same time, when the first airbag 63 expands, the plurality of winding sheets 65 move toward the outside of the placement space 69, and the plurality of winding sheets 65 unfold into a truncated cone-shaped structure, the diameter of the upper part is smaller than the diameter of the lower part, so as to prevent the ultra-fine wire 98 wound on the plurality of winding sheets 65 from falling due to their own gravity.

[0081] Furthermore, if Fig.14 As shown, the locking plate 64 includes a contact surface A2, which can contact the side of the winding plate 65 facing away from the placement space 69. The plane parallel to the gravity direction is the reference plane A3, and the angle γ between the contact surface A2 and the reference plane A3 is 1 degree to 3 degrees.

[0082] Preferably, each winding sheet 65 is correspondingly provided with a locking sheet 64 .

[0083] like Fig.12As shown, the wire take-up assembly 6 also includes a connector 66 and a plurality of elastic members 67, and the plurality of elastic members 67 correspond to the plurality of winding sheets 65 one by one, and one end of the elastic member 67 is connected to the end of the winding sheet 65 corresponding to the elastic member 67 that faces away from the fixing member 62, and the other end of the elastic member 67 is connected to the connector 66, and the elastic member 67 is extended. In this way, the elastic member 67 can exert a force toward the placement space 69 on the winding sheet 65, so that the plurality of winding sheets 65 have a tendency to shrink toward the placement space 69. Under the action of the elastic member 67, the first airbag 63 shrinks, and the lower end of the winding sheet 65 shrinks toward the inside of the placement space 69 under the action of the elastic member 67, so that the ultra-fine wire 98 wound on the plurality of winding sheets 65 falls off. In this way, through the coordination of the various structures of the wire take-up assembly 6, the ultra-fine wire 98 wound on the plurality of winding sheets 65 can be directly dropped into the hanging basket 83.

[0084] Preferably, the elastic member 67 is a spring.

[0085] Alternatively, if Fig.11 As shown, the ultra-fine wire 98 detection device also includes an air-filling component 7, which includes a second airbag 71, an air-release valve 72, an air-filling pipe 73 and a pneumatic rotary joint 74. The output shaft of the second driving member 61 is a hollow structure. The lower end of the output shaft of the second driving member 61 is connected to the fixing member 62, and is connected to the first airbag 63 through the center hole of the fixing member 62. When the second driving member 61 is working, the output shaft of the second driving member 61, the fixing member 62, the first airbag 63 and the plurality of winding sheets 65 rotate synchronously. At the same time, the upper end of the output shaft of the second driving member 61 passes through the housing of the second driving member 61, and is connected to the second airbag 71 through the pneumatic rotary joint 74 and the air-filling pipe 73. The air-filling pipe 73 is provided with an air-release valve 72. When it is necessary to add gas to the first airbag 63, the air-release valve 72 can be opened, and the second airbag 71 can be squeezed to allow the gas to enter the first airbag 63. When the ultra-fine wire 98 needs to be released, the deflation valve 72 is opened, and under the action of the elastic member 67 , the lower end of the winding sheet 65 contracts toward the inside of the accommodation space 69 , and the winding sheet 65 squeezes the first airbag 63 , so that the gas returns to the second airbag 71 .

[0086] In addition, after the end of the ultra-fine wire 98 on the pay-off assembly 1 is passed through the air filter assembly and connected to the take-up assembly 6, the test liquid is injected into the liquid tank 94. At this time, the preset position of the liquid level is recorded. After the ultra-fine wire 98 is released to the hanging basket 83, the second airbag 71 can be squeezed so that the liquid level in the liquid tank 94 reaches the preset position to avoid measurement errors caused by different heights of the hanging basket bracket 82 entering the test liquid.

[0087] By performing density detection of the ultrafine wire 98 through the ultrafine wire 98 detection device of the present application, bubbles on the surface of the ultrafine wire 98 can be removed, thereby improving the accuracy of ultrafine wire density detection.

[0088] According to another aspect of the present application, a method for detecting the density of an ultrafine wire is provided. The method for detecting the density of an ultrafine wire 98 is performed by using the ultrafine wire density detection device described above. The method for detecting the density of an ultrafine wire comprises:

[0089] S1, obtaining a first mass m1 of the ultrafine wire 98 in the air;

[0090] Specifically, in step S1, the bobbin 13 without the ultrafine wire 98 wound thereon is first weighed to obtain the mass m of the bobbin 13. ’ Then the ultrafine wire 98 is wound on the bobbin 13 by a rewinding machine and weighed to obtain the total mass m of the bobbin 13 and the ultrafine wire 98 in the air. ” , total mass m ” With spool 13 mass m ’ The difference is the mass of the ultrafine wire 98 to be measured in the air, that is, the first mass m1. After obtaining the first mass m1 of the ultrafine wire 98 in the air, the bobbin 13 is installed on the bobbin seat 12, wherein the pay-off motor 11 is rotating clockwise for pay-off.

[0091] The material of the spool 13 is preferably a lightweight material such as aluminum alloy, magnesium alloy, carbon fiber, etc., so that a balance with a small range and high weighing accuracy can be selected for weighing. In order to ensure that the fluctuation of the final test density is minimal, the weight of the ultra-fine wire 98 to be tested should not be less than 10g, that is, the first mass m1 should not be less than 10g.

[0092] S2, guiding the end of the ultra-fine wire 98 on the pay-off assembly 1 to between the locking piece 64 and the winding piece 65 corresponding to the locking piece 64 through the air filter assembly, and expanding the first airbag 63 to make the locking piece 64 and the winding piece 65 corresponding to the locking piece 64 abut against each other to clamp the end of the wire;

[0093] In step S2, the end of the ultrafine wire 98 on the wire-releasing assembly 1 is guided to between the locking plate 64 and the winding plate 65 through the first tensioning wheel 22, the second tensioning wheel 23, the first guide wheel 952, the first air filter mechanism 3, the second guide wheel 962, the second air filter mechanism 4, the third guide wheel 972 and the wire-arranging assembly 5, the air release valve 72 is opened, and the second airbag 71 is squeezed to move the winding plate 65 toward the locking plate 64, so that the locking plate 64 and the winding plate 65 clamp the end of the wire.

[0094] S3, injecting the detection liquid into the liquid tank 94 so that the wire take-up assembly 6 is immersed in the detection liquid, and recording the preset position of the liquid level of the detection liquid;

[0095] In step S3 , the liquid level of the detected liquid needs to be between the highest liquid level mark 311 and the lowest liquid level mark 312 on the connecting member 31 .

[0096] S4, clear the weighing component 8;

[0097] In step S4, it is necessary to wait until the page of the detection liquid is stable before clearing.

[0098] S5, the second driving member drives the fixing member 62 to rotate, so that the ultra-fine wire 98 is wound onto the plurality of winding sheets 65. During the winding process of the ultra-fine wire 98, the air filter assembly attaches the detection liquid to the surface of the ultra-fine wire 98 to remove the air adsorbed on the surface of the ultra-fine wire 98;

[0099] In step S5, the pay-off speed (for example, the pay-off speed can be 100-300 m / min, preferably, the pay-off speed can be 200 m / min), the tension value (set according to the wire diameter and breaking force of the ultra-fine wire 98, generally set to 10%-20% of the wire breaking force), the wire spacing (set according to the wire diameter, generally slightly larger than the wire diameter to avoid interference between adjacent coils), and the take-up speed of the take-up assembly 6 are set on the industrial computer (the take-up speed is consistent with the pay-off speed). Then, each driving component is started, so that the pay-off component 1 pays out the silk thread, and the ultra-fine wire is tensioned by the tensioning component 2, and the ultra-fine wire 98 is arranged in an orderly manner on the wire taking-up component 6 under the traction of the wire taking-up component 6; when the tension values ​​on the first tensioning wheel 22 and the second tensioning wheel 23 on the tensioning component 2 are 0, the industrial computer recognizes that the pay-off is completed, and the pay-off motor 11 stops working. At this time, the second driving component continues to work for t seconds and then all systems stop (where t=L / V, where L is the length of the winding path from the spool 13 to the wire taking-up component 6, and V is the wire taking-up speed), so that the ultra-fine wire 98 is completely wound on multiple winding sheets 65.

[0100] When passing through the first air filter mechanism 3, the high-pressure detection liquid sprayed from the first guide hole 321 breaks through the interface between the air and the ultrafine wire 98, achieving the effect of separating the ultrafine wire 98 from the air, so that the detection liquid adheres to the ultrafine wire 98. The high-pressure detection liquid sprayed from the inlet hole 36 can form an intersection with the high-pressure detection liquid sprayed from the first guide hole 321, so that the high-pressure detection liquid sprayed from the inlet hole 36 covers the ultrafine wire 98, thereby making the detection liquid adhere to the ultrafine wire 98 to prevent the ultrafine wire 98 from contacting the air.

[0101] When passing through the second air filtering mechanism 4 , the ultrasonic generator 41 can cause the vibration mechanism 42 to generate low-amplitude and high-frequency vibrations to vibrate the ultrafine wires 98 , thereby removing tiny bubbles on the ultrafine wires 98 .

[0102] S6, the first airbag 63 contracts to move the plurality of winding sheets 65 toward the inside of the placement space 69, and the ultra-fine wires 98 wound on the plurality of winding sheets 65 fall into the hanging basket 83, and the liquid level of the detection liquid drops;

[0103] In step S6, the deflation valve 72 is opened, and under the action of the elastic member 67, the lower end of the winding sheet 65 contracts toward the inside of the accommodation space 69, and the winding sheet 65 squeezes the first airbag 63, so that the gas returns to the second airbag 71, thereby causing the ultra-fine wires 98 wound on the multiple winding sheets 65 to fall into the hanging basket 83. At this time, the liquid level of the detection liquid drops.

[0104] S6, the first airbag 63 expands to raise the liquid level of the detection liquid to a preset position;

[0105] In step S7, the second airbag 71 is squeezed to allow gas to enter the first airbag 63 until the liquid level of the detection liquid rises to a preset position to avoid measurement errors caused by different heights of the hanging basket bracket 82 entering the detection liquid.

[0106] S7, the weighing assembly 8 weighs the ultrafine wire 98 to obtain the second mass m2 of the ultrafine wire 98 in the detection liquid. The difference between the first mass m1 and the second mass m2 is the third mass m3, that is, m3 = m1-m2. The density of the ultrafine wire 98 is equal to the first mass m1 and the density of the detection liquid ρ

[0107]

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultrafine wire density detection device, the ultrafine wire density detection device is used to detect the density of the ultrafine wire, characterized in that: The ultrafine wire density detection device comprises a wire-releasing assembly, a wire-receiving assembly, an air filter assembly and a liquid tank, wherein the liquid tank is used to contain the detection liquid, the wire-releasing assembly is located outside the liquid tank, the ultrafine wire is wound on the wire-releasing assembly, the wire-receiving assembly is located inside the liquid tank, the ultrafine wire on the wire-releasing assembly is connected to the wire-receiving assembly via the air filter assembly, and the wire-receiving assembly can receive the ultrafine wire on the wire-releasing assembly onto the wire-receiving assembly; The air filter component can attach the detection liquid in the liquid tank to the surface of the ultra-fine wire to remove the air adsorbed on the surface of the ultra-fine wire.

2. The ultrafine wire density detection device according to claim 1, characterized in that: The air filter assembly includes a first air filter mechanism, the first air filter mechanism includes a guide member and an air filter member, the guide member is connected to the liquid tank, the guide member encloses a guide space, the air filter member includes an inlet hole and an outlet hole, and the ultra-fine wire is connected to the wire collection assembly through the inlet hole and the outlet hole in sequence; The guide member is provided with a first guide hole, which is connected to the guide space. The first guide hole and the wire inlet hole are located on the same side of the air filter. The angle between the extension direction of the wire inlet hole and the extension direction of the first guide hole is 30 degrees to 60 degrees.

3. The ultra-fine wire density detection device according to claim 2, characterized in that: The air filter element comprises an inlet portion, an air filter portion and an outlet portion connected in sequence, the inlet portion comprises the inlet hole, the outlet portion comprises the outlet hole, the air filter portion encloses an air filter space, and the inlet hole and the outlet hole are both connected to the air filter space; The air filter portion is located inside the guide space, at least part of the line inlet portion and at least part of the line outlet portion are located outside the guide space, a second guide hole is provided on the air filter portion, and the air filter space is connected to the guide space through the second guide hole.

4. The ultrafine wire density detection device according to any one of claims 1 to 3, characterized in that: The air filter assembly includes a second air filter mechanism, which includes an ultrasonic generator and a vibration mechanism. The ultrasonic generator is located inside the liquid tank, and the vibration mechanism is connected to the ultrasonic generator. The vibration mechanism includes a vibration hole, and the ultrafine wire passes through the vibration hole.

5. The ultra-fine wire density detection device according to claim 1, characterized in that: The ultra-fine wire density detection device further comprises a wire arrangement assembly, the wire arrangement assembly comprises a third driving member and a wire arrangement mechanism, the wire arrangement mechanism is provided with a wire arrangement hole, and the ultra-fine wire passes through the wire arrangement hole; A plane perpendicular to the direction of gravity is defined as a reference plane, and the third driving member can drive the cable arranging mechanism to swing so that the angle between the axis of the cable arranging hole and the reference plane varies between -15 degrees and 15 degrees.

6. The ultra-fine wire density detection device according to claim 5, characterized in that: The ultra-fine wire density detection device also includes a tensioning assembly, which includes a mounting member, a first tensioning wheel, a second tensioning wheel and a first driving member, the first driving member is connected to the mounting member so that the first driving member can drive the mounting member to rotate, the first tensioning wheel and the second tensioning wheel are arranged on the mounting member at intervals, and the ultra-fine wire passes through the first tensioning wheel and the second tensioning wheel in sequence.

7. The ultrafine wire density detection device according to claim 5 or 6, characterized in that: The ultrafine wire density detection device further comprises a weighing assembly, wherein the weighing assembly comprises a hanging basket, and the hanging basket is arranged below the wire take-up assembly in the direction of gravity; The wire take-up assembly comprises a second driving member, a fixing member, a first airbag, a locking plate and a plurality of winding plates, wherein the second driving member is connected to the fixing member so that the second driving member can drive the fixing member to rotate, the winding plate is hinged to the fixing member, the plurality of winding plates are surrounded for one circle, the plurality of winding plates enclose an installation space, the first airbag is arranged in the installation space, and the first airbag can be contracted or expanded so that the plurality of winding plates move toward the inside of the installation space or move toward the outside of the installation space; At least one of the winding sheets is correspondingly provided with the locking sheet, and the locking sheet can abut against a side of the winding sheet corresponding to the locking sheet that faces away from the accommodating space.

8. The ultra-fine wire density detection device according to claim 7, characterized in that: The locking plate comprises an abutting surface, and the abutting surface can abut against a side of the winding plate facing away from the placement space, and an angle between the abutting surface and a plane parallel to the gravity direction is 1 degree to 3 degrees.

9. The ultra-fine wire density detection device according to claim 7, characterized in that: The wire taking-up assembly also includes a connecting member and a plurality of elastic members, wherein the plurality of elastic members correspond one-to-one to the plurality of winding sheets, one end of the elastic member is connected to the winding sheet corresponding to the elastic member, and the other end of the elastic member is connected to the connecting member, and the elastic member is extended.

10. A method for detecting ultrafine line density, characterized in that: The ultrafine wire density detection method performs density detection on the ultrafine wire by using an ultrafine wire density detection device according to any one of claims 7 to 9, and the ultrafine wire density detection method comprises: S1. obtaining a first mass of the ultrafine wire in air; S2, guiding the thread ends of the ultra-fine wires on the wire-releasing assembly to between the locking piece and the winding piece corresponding to the locking piece through the air filter assembly, and expanding the first airbag to make the locking piece and the winding piece corresponding to the locking piece abut against each other to clamp the thread ends; S3, injecting the detection liquid into the liquid tank so that the wire take-up assembly is immersed in the detection liquid, and recording the preset position of the liquid level of the detection liquid; S4, clearing the weighing component; S5, the second driving member drives the fixing member to rotate so that the ultrafine wire is wound onto the plurality of winding sheets. During the winding process of the ultrafine wire, the air filter assembly attaches the detection liquid to the surface of the ultrafine wire to remove the air adsorbed on the surface of the ultrafine wire; S6, the first airbag contracts to move the plurality of winding sheets toward the inside of the placement space, the ultra-fine wires wound on the plurality of winding sheets fall into the hanging basket, and the liquid level of the detection liquid drops; S6, the first airbag expands to raise the liquid level of the detection liquid to the preset position; S7. The weighing component weighs the ultrafine wire to obtain the second mass of the ultrafine wire in the detection liquid, the difference between the first mass and the second mass is the third mass, and the density of the ultrafine wire is equal to the ratio of the product of the first mass and the density of the detection liquid to the third mass.

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