Thick aluminum wire and aluminum strip welding wire pay-off driving device based on power component

Abstract

The invention relates to a thick aluminum wire and aluminum strip welding wire paying-off driving device based on a power component. A paying-off rotating shaft, a paying-off detection assembly, a rotating body assembly, an encoder assembly and a wire tensioning wheel structure assembly are arranged on a paying-off bottom plate. The rotating body assembly and the encoder assembly are configured to be matched with a welding wire released by the traction reel; the paying-off rotating shaft penetrates through the paying-off bottom plate and is connected with the reel, and the paying-off rotating shaft is matched with the rotating body assembly and the wire tensioning wheel structure assembly to jointly adjust the tightness of a welding wire; and the pay-off detection assembly is configured to perform tension detection on the bonding wire, and the pay-off detection assembly, the rotating body assembly and the encoder assembly are arranged in a linkage manner so as to adjust the rotating body assembly and the encoder assembly according to a tension detection result. High-precision tension, position control and pay-off speed adjustment are achieved, due to the fact that the tension is high in precision and controllability, the problems of high wire breakage rate, low efficiency and the like in the thick aluminum wire or aluminum strip welding process are solved, and the device is suitable for precise welding of thick aluminum wires or aluminum strips on a semiconductor wire welding machine.

Description

Technical Field

[0001] The present application relates to the field of semiconductor production and preparation, and in particular to a thick aluminum wire and aluminum ribbon bonding wire pay-off drive device based on power components. Background Art

[0002] Power components include power diodes, power transistors (BJTs), insulated-gate bipolar transistors (IGBTs), power field-effect transistors (MOSFETs), and other power modules. Among power components, connecting wires, such as thick aluminum wire and aluminum ribbon, are key components for achieving electrical connections in high-current, high-power scenarios. Their core function is to create low-impedance, high-current paths, connecting chips, lead frames, or electrodes, and ensuring stable operation of power devices.

[0003] Thick aluminum wire in power components typically refers to aluminum or aluminum alloy conductors with diameters exceeding 300μm or even 1mm. These conductors are used to carry high currents, typically ranging from tens to hundreds of amperes. Unlike round wire, the aluminum ribbon used in power components is flat and primarily designed to achieve low-impedance electrical connections at high current densities.

[0004] The core of thick aluminum wire or ribbon bonding is to form a strong metallurgical bond between the thick aluminum wire or ribbon and the surface to be connected through ultrasonic bonding or thermo-compression bonding, achieving low-impedance conduction. The surfaces to be connected include the aluminum metallization layer of the chip and the aluminum plating of the lead frame.

[0005] Traditional pay-off drive devices use mechanical tension control, which has problems such as slow response speed and large tension fluctuations, resulting in easy wire breakage and uneven solder joints when welding thick aluminum wires. In addition, due to the high ductility of the material during the welding process of aluminum wires and aluminum strips, strict pay-off synchronization is required. Traditional equipment is difficult to meet the needs of high-precision dynamic adjustment. Moreover, the application of power components in drive control has not yet been fully combined with the tension feedback mechanism, resulting in insufficient energy efficiency and stability. Summary of the Invention

[0006] Based on this, it is necessary to provide a thick aluminum wire and aluminum ribbon welding wire pay-off drive device based on power components.

[0007] One embodiment of the present application is a power component-based pay-off drive device for thick aluminum wire and aluminum ribbon bonding wire, which includes a pay-off body, a pay-off rotating shaft, and a pay-off detection assembly;

[0008] The pay-off body includes a reel, a pay-off base plate, a rotating body assembly, an encoder assembly and a tensioning wheel structure assembly;

[0009] The pay-off rotary shaft, the pay-off detection assembly, the rotating body assembly, the encoder assembly and the tensioning wheel structure assembly are respectively arranged on the pay-off bottom plate;

[0010] The rotating body assembly and the encoder assembly are configured to cooperate with each other to pull the welding wire released from the reel;

[0011] The pay-off rotating shaft is configured to pass through the pay-off bottom plate and be connected to the reel, and the pay-off rotating shaft cooperates with the rotating body assembly and the tensioning wheel structure assembly to jointly adjust the tightness of the welding wire;

[0012] The wire-paying detection component is configured to perform tension detection on the welding wire, and the wire-paying detection component is linked with the rotating body component and the encoder component to adjust the rotating body component and the encoder component according to the tension detection result.

[0013] The above-mentioned power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device, through the coordination of the pay-off body, the pay-off rotary axis and the pay-off detection assembly, on the one hand realizes high-precision tension, position control and pay-off speed adjustment, and due to the high tension accuracy and strong controllability, solves the problems of high wire breakage rate and low efficiency in the welding of thick aluminum wire or aluminum strip, and is suitable for the precision welding of thick aluminum wire or aluminum strip on semiconductor wire bonding machines; on the other hand, with the closed-loop tension control, it can provide real-time feedback on the length of the thick aluminum wire or aluminum strip in the pay-off path to the control system, thereby realizing closed-loop control of production; on the other hand, it integrates power drive, real-time tension feedback and adaptive control design, is suitable for automated production processes, and is conducive to the realization of unmanned automatic chip production lines; on the other hand, through the coordination of the rotating body assembly, encoder assembly and wire tensioning wheel structure assembly with the pay-off rotary axis and the pay-off detection assembly, it is conducive to compatibility with high-speed welding processes. When used with ultrasonic welding machines or laser welding machines, it can switch with high-speed welding actions, reduce manual intervention, adapt to the high-speed beat of the welding machine, and thus improve the overall production line efficiency.

[0014] In some embodiments, the encoder assembly includes a pay-off encoder, an encoder holder, and an encoder wheel;

[0015] The encoder wheel is provided on the pay-off encoder, the pay-off encoder is provided on the encoder fixing seat, the encoder fixing seat is provided on the pay-off bottom plate, and the pay-off encoder is configured to cooperate with the rotating body assembly to pull the welding wire; or,

[0016] The power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device also includes a thin aluminum tube fixing clamp and a universal aluminum tube fixing seat. The thin aluminum tube fixing clamp is arranged on the universal aluminum tube fixing seat, and the universal aluminum tube fixing seat is arranged on the pay-off bottom plate. The thin aluminum tube fixing clamp is used to clamp the thin aluminum tube.

[0017] In some embodiments, the power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device further includes a square wire tube and a wire tube, the wire tube is arranged in the square wire tube, the welding wire passes through the wire tube for bonding, the square wire tube is fixed to the pay-off bottom plate, or the encoder fixing seat and the aluminum tube universal fixing seat jointly clamp and fix the square wire tube; or,

[0018] The encoder assembly further includes a handle, which is provided on the encoder wheel and is used to adjust the encoder wheel; or,

[0019] The universal aluminum tube fixing seat is arranged adjacent to the encoder fixing seat.

[0020] In some embodiments, the tensioning wheel structural assembly includes a first pay-off swing arm, a second rotating shaft, a first swing arm rotating shaft, a second rubber wheel, a first rubber wheel, a second pay-off swing arm, a first rotating shaft, and a second swing arm rotating shaft;

[0021] The first swing arm rotating shaft and the second swing arm rotating shaft are respectively arranged on the wire-paying bottom plate;

[0022] The first pay-off swing arm is rotatably disposed on the first swing arm rotating shaft;

[0023] The second pay-off swing arm is rotatably disposed on the second swing arm rotating shaft;

[0024] The first rubber wheel is rotatably disposed on the first rotating shaft, and the first rotating shaft is disposed on the first pay-off swing arm;

[0025] The second rubber wheel is rotatably disposed on the second rotating shaft, and the second rotating shaft is disposed on the second pay-off swing arm;

[0026] The first rubber wheel and the second rubber wheel contact the welding line respectively.

[0027] As an example, the first rubber wheel is connected to the first rotating shaft through a bearing shaft; similarly, the second rubber wheel is connected to the second rotating shaft through a bearing shaft; the first line-paying rocker is connected to the first rocker rotating shaft through a bearing shaft; the second line-paying rocker is connected to the second rocker rotating shaft through a bearing shaft.

[0028] In some embodiments, the first line-paying rocker arm and the second line-paying rocker arm are respectively connected to different spring tension adjustment blocks via different tension springs.

[0029] In some embodiments, the first rubber wheel and the lower pressure wheel of the rotating body assembly jointly clamp the welding wire at a first position; the second rubber wheel and the encoder wheel of the encoder assembly jointly clamp the welding wire at a second position.

[0030] In some embodiments, the tensioning wheel structural assembly further includes a first roller needle provided on the first pay-off rocker and an aluminum wire limiting column provided on the first roller needle; the aluminum wire limiting column is configured to clamp the welding wire at a third position adjacent to the first position, and the direction in which the aluminum wire limiting column clamps the welding wire is perpendicular to the direction in which the first rubber wheel cooperates with the lower pressure wheel to clamp the welding wire; or,

[0031] The power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device also includes a second needle roller assembly, which is configured to clamp the welding wire at a fourth position adjacent to the second position, and the direction of clamping the welding wire at the fourth position is perpendicular to the direction of clamping the welding wire by the second rubber wheel and the encoder wheel.

[0032] In some embodiments, the rotating body assembly includes a lower pressure wheel and a stepper motor, and the output shaft of the stepper motor is drivingly connected to the lower pressure wheel;

[0033] The stepper motor is arranged on the wire-paying base plate, and the stepper motor and its output shaft are respectively located on two opposite sides of the wire-paying base plate.

[0034] In some embodiments, the power component-based thick aluminum wire and aluminum strip welding wire pay-out drive device also includes a connected tin wire cover and a bracket frame, the pay-out body is arranged on the bracket frame, and the tin wire cover is covered on the pay-out body.

[0035] In some embodiments, the power component-based thick aluminum wire and aluminum ribbon welding wire pay-off drive device further comprises a hinge, and the tin wire cover is connected to the bracket frame via the hinge; or,

[0036] The bracket frame includes a first side plate for fixing the wire-releasing body, a fixing plate for the wire-releasing body, and a second side plate for fixing the wire-releasing body; the first side plate for fixing the wire-releasing body and the second side plate for fixing the wire-releasing body are connected by two fixing plates for the wire-releasing body to form the bracket frame;

[0037] The wire-releasing body is screwed onto the first fixed side plate of the wire-releasing body, the fixed plate of the wire-releasing body and the second fixed side plate of the wire-releasing body respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 This is a structural schematic diagram of an embodiment of a thick aluminum wire and aluminum ribbon bonding wire pay-off drive device based on power components described in this application.

[0040] Figure 2 for Figure 1 Schematic diagram of the structural decomposition of the embodiment shown.

[0041] Figure 3 for Figure 2 A schematic diagram of another direction of the embodiment shown.

[0042] Figure 4 for Figure 3 An enlarged schematic diagram of part of the structure of the embodiment shown.

[0043] Figure 5 for Figure 2 An enlarged schematic diagram of part of the structure of the embodiment shown.

[0044] Figure 6 for Figure 5 A schematic diagram of another direction of the embodiment shown.

[0045] Figure 7 for Figure 5 Schematic diagram of the structural decomposition of the embodiment shown.

[0046] Figure 8 for Figure 7 Another schematic diagram of the identification of the illustrated embodiment.

[0047] Figure 9 for Figure 1 A schematic structural diagram of the wire-laying detection assembly of the illustrated embodiment.

[0048] Figure 10 for Figure 9 Schematic diagram of the structural decomposition of the embodiment shown.

[0049] Figure 11 for Figure 1 A schematic structural diagram of the pay-off rotary shaft of the illustrated embodiment.

[0050] Figure 12 for Figure 11 Schematic diagram of the structural decomposition of the embodiment shown.

[0051] Figure 13 for Figure 11 A schematic cross-sectional view of the embodiment in one direction is shown.

[0052] Figure numerals: hinge 1, first side plate for fixing the pay-off body 2, pay-off body 3, magnet adsorption seat 4, pay-off body fixing plate 5, second side plate for fixing the pay-off body 6, tin wire cover 7, optical fiber amplifier 8, magnet 9, bearing 10, stepping motor 11, first needle roller 12, tension spring 13, pay-off encoder 14, welding wire 15, reel 16, pay-off base plate 17, square wire tube 18, wire tube 19, second needle roller assembly 20, universal aluminum tube fixing seat 21, encoder fixing seat 22, pin needle fixing seat 23, thin aluminum tube fixing clamp 24, first pay-off rocker 26, spring tension adjustment block 27, second rotating shaft 36, aluminum wire limiting column 29, lower pressure wheel 30, second rubber wheel 33, encoder wheel 32, first rubber wheel 31. Handle 34. Second pay-off rocker arm 35. First rotating shaft 28. Second rocker arm rotating shaft 37. Pay-off rotating shaft 38. Pay-off detecting assembly 39. Deep groove ball bearing 40. Bearing retaining ring 41. Elastic wheel core shaft 42. Wheel core pressure shaft 43. Reel shrapnel 44. Shrapnel pressure ring 45. Wheel core end shaft 46. Damping seat 47. Shading member 48. Optical fiber 49. Button magnet 50. Inner baffle 51. Outer cover 52. Pay-off optical fiber seat 53. Pay-off block 54. Support frame 55. Rotating body assembly 56. Encoder assembly 57. Tensioning wheel structure assembly 58. First rocker arm rotating shaft 59. Free end 60. Bonding position 61. Detection position range 62. Pay-off drive device 100 for thick aluminum wire and aluminum strip welding wire based on power components. DETAILED DESCRIPTION

[0053] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0054] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0056] In this application, unless otherwise expressly specified or limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact through an intermediate medium. Furthermore, a first feature being “above,” “above,” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below,” “below,” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0058] The present application discloses a thick aluminum wire and aluminum strip welding wire pay-out drive device based on power components, which includes some or all of the technical features of the following embodiments; that is, the thick aluminum wire and aluminum strip welding wire pay-out drive device based on power components includes some or all of the following structures. In one embodiment of the present application, a thick aluminum wire and aluminum strip welding wire pay-off drive device based on power components includes a pay-off body, a pay-off rotating shaft and a pay-off detection assembly; the pay-off body includes a reel, a pay-off base plate, a rotating body assembly, an encoder assembly and a tensioning wheel structure assembly; the pay-off rotating shaft, the pay-off detection assembly, the rotating body assembly, the encoder assembly and the tensioning wheel structure assembly are respectively arranged on the pay-off base plate; the rotating body assembly and the encoder assembly are configured to cooperate in pulling the welding wire paid out by the reel; the pay-off rotating shaft is configured to pass through the pay-off base plate and connect the reel, and the pay-off rotating shaft cooperates with the rotating body assembly and the tensioning wheel structure assembly to jointly adjust the tightness of the welding wire; the pay-off detection assembly is configured to perform tension detection on the welding wire, and the pay-off detection assembly is linked to the rotating body assembly and the encoder assembly to adjust the rotating body assembly and the encoder assembly according to the tension detection result. The above-mentioned thick aluminum wire and aluminum strip welding wire pay-off drive device based on power components, through the coordination of the pay-off main body, the pay-off rotary shaft and the pay-off detection component, on the one hand realizes high-precision tension, position control and pay-off speed adjustment, and due to the high tension accuracy and strong controllability, it solves the problems of high wire breakage rate and low efficiency in the welding of thick aluminum wire or aluminum strip, and is suitable for the precision welding of thick aluminum wire or aluminum strip on semiconductor wire bonding machines; on the other hand, in conjunction with closed-loop tension control, it can provide real-time feedback on the length of the thick aluminum wire or aluminum strip in the pay-off path to the control system, thereby realizing closed-loop control of production; on the other hand, it integrates power drive, real-time tension feedback and adaptive control design, which is suitable for automated production processes and is conducive to the realization of unmanned automatic chip production lines; on the other hand, through the coordination of the rotating body component, encoder component and tensioning wheel structure component with the pay-off rotary shaft and pay-off detection component, it is conducive to compatibility with high-speed welding processes. When coordinated with ultrasonic welding machines or laser welding machines, it can coordinate with high-speed welding action switching, reduce manual intervention, adapt to the high-speed beat of the welding machine, and thus improve the overall production line efficiency. The following is combined with Figures 1 to 13 , the thick aluminum wire and aluminum strip welding wire pay-off drive device based on power components is described in detail.

[0059] In some embodiments, a thick aluminum wire and aluminum ribbon bonding wire pay-off driving device 100 based on power components is as follows: Figure 1 and Figure 2 As shown, it includes a pay-off body 3, a pay-off rotating shaft 38 and a pay-off detection component 39; Figure 3 and Figure 5The pay-off body 3 includes a reel 16, a pay-off base plate 17, a rotating body assembly 56, an encoder assembly 57 and a tensioning wheel structural assembly 58; the pay-off rotary shaft 38, the pay-off detection assembly 39, the rotating body assembly 56, the encoder assembly 57 and the tensioning wheel structural assembly 58 are respectively arranged on the pay-off base plate 17; the rotating body assembly 56 and the encoder assembly 57 are configured to cooperate with pulling the welding wire 15 released by the reel 16; the pay-off rotary shaft 38 is configured to pass through the pay-off base plate 17 and connect the reel 16 The payout rotating shaft 38 cooperates with the rotating body assembly 56 and the tensioning wheel structure assembly 58 to jointly adjust the tightness of the welding wire 15. The payout detection assembly 39 is configured to detect the tension of the welding wire 15. The payout detection assembly 39 is configured to work in conjunction with the rotating body assembly 56 and the encoder assembly 57 to adjust the rotating body assembly 56 and the encoder assembly 57 based on the tension detection results, that is, to adjust the output of the rotating body assembly 56 and the encoder assembly 57 to jointly adjust the tightness of the welding wire 15. In various embodiments, the welding wire 15 is a thick aluminum wire or aluminum strip. The above-mentioned thick aluminum wire and aluminum strip welding wire pay-off drive device based on power components, through the cooperation of the pay-off main body 3, the pay-off rotating shaft 38 and the pay-off detection component 39, on the one hand realizes high-precision tension, position control and pay-off speed adjustment, and because of the high tension accuracy and strong controllability, it solves the problems of high wire breakage rate and low efficiency in the welding of thick aluminum wire or aluminum strip, and is suitable for the precision welding of thick aluminum wire or aluminum strip on semiconductor wire bonding machines; on the other hand, with the closed-loop tension control, it can provide real-time feedback on the length of the thick aluminum wire or aluminum strip in the pay-off path to control system, thereby realizing closed-loop control of production; on the other hand, it integrates power drive, real-time tension feedback and adaptive control design, which is suitable for automated production process and is conducive to the realization of unmanned automatic chip production line; on the other hand, through the cooperation of the rotating body component 56, the encoder component 57 and the wire-tensioning wheel structure component 58 with the wire-paying rotating shaft 38 and the wire-paying detection component 39, it is conducive to compatibility with high-speed welding process. When combined with an ultrasonic welding machine or a laser welding machine, it can cooperate with high-speed welding action switching, reduce manual intervention, adapt to the high-speed beat of the welding machine, and thus improve the overall production line efficiency.

[0060] In order to protect the line-releasing body 3, in some embodiments, as Figure 1 and Figure 3 As shown, the thick aluminum wire and aluminum ribbon welding wire pay-off driving device 100 based on power components also includes a tin wire cover 7 and a bracket frame 55 connected thereto, and the pay-off body 3 is arranged on the bracket frame 55, combined with Figure 2, the tin wire cover 7 is covered on the pay-off body 3, so that the pay-off rotating shaft 38 and the pay-off detection assembly 39 on the pay-off body 3 are covered by the tin wire cover 7. As an example, the tin wire cover 7 is covered on the pay-off base plate 17 of the pay-off body 3, and the reel 16, rotating body assembly 56, encoder assembly 57 and wire tensioning wheel structure assembly 58 of the pay-off body 3 are all located between the tin wire cover 7 and the pay-off base plate 17; the pay-off rotating shaft 38 and the pay-off detection assembly 39 are both partially located between the tin wire cover 7 and the pay-off base plate 17, and partially located on the other side of the pay-off base plate 17, as shown in FIG. Figure 3 and Figure 4 In other embodiments, the wire-releasing detection assembly 39 is located between the tin wire cover 7 and the wire-releasing base plate 17; and / or the wire-releasing rotation axis 38 is located between the tin wire cover 7 and the wire-releasing base plate 17, which can be flexibly designed according to actual needs.

[0061] This design, on the basis of protecting the pay-off body 3, further improves the practicality and stability of the device. On the one hand, the tin wire cover 7 cooperates with the bracket frame 55 to enclose the core components such as the reel 16, the rotating body assembly 56, the encoder assembly 57, and the tensioning wheel structure assembly 58 between the tin wire cover 7 and the pay-off base plate 17, which can reduce the interference of external dust and impurities on the welding wire 15 and components, ensure the accuracy of the rotating body assembly 56 and the encoder assembly 57 in pulling the welding wire 15, maintain the tension control accuracy, and reduce the risk of wire breakage. On the other hand, this closed structure does not affect the normal operation of the pay-off rotating shaft 38 and the pay-off detection assembly 39. The pay-off detection assembly 39 can stably detect the tension and adjust other components in a linked manner to ensure the reliable implementation of closed-loop tension control and production closed-loop control. On the other hand, the flexible component position design is adapted to different scenarios. While protecting the components, it does not hinder the performance of functions such as power drive and real-time feedback, which helps the device to stably cooperate with high-speed welding processes in automated production lines and improve overall efficiency.

[0062] In order to facilitate opening and closing the tin wire cover 7, in some embodiments, as Figure 1 and Figure 2 As shown, the thick aluminum wire and aluminum ribbon welding wire pay-off driving device 100 based on power components further includes a hinge 1, and the tin wire cover 7 is connected to the bracket frame 55 through the hinge 1; and / or, combined with Figure 3The bracket frame 55 includes a first side plate 2 for fixing the wire-releasing body, a fixing plate 5 for the wire-releasing body, and a second side plate 6 for fixing the wire-releasing body; the first side plate 2 for fixing the wire-releasing body and the second side plate 6 for fixing the wire-releasing body are connected by two fixing plates 5 to form the bracket frame 55; the wire-releasing body 3 is screwed onto the first side plate 2 for fixing the wire-releasing body, the fixing plate 5 for fixing the wire-releasing body, and the second side plate 6 for fixing the wire-releasing body. As an example, Figure 3 As shown, the inner side of the tin wire cover 7 is provided with a magnetic adsorption seat 4, combined with Figure 8 The wire-releasing body 3 or the wire-releasing bottom plate 17 of the wire-releasing body 3 is provided with a magnet 9 corresponding to the magnet adsorption seat 4, so that the wire-releasing body 3 and the tin wire cover 7 are installed in alignment, thereby ensuring the accuracy of the assembly position.

[0063] This design not only facilitates operation but also further improves the reliability and assembly accuracy of the device. On the one hand, the tin wire cover 7 is connected to the bracket frame 55 by the hinge 1, which enables the tin wire cover 7 to be opened and closed flexibly, which is convenient for maintaining or replacing the welding wire 15 of the core components such as the internal reel 16 and the rotating body assembly 56, and can stably maintain a protective state when closed, avoiding component loss caused by frequent disassembly. On the other hand, the bracket frame 55 provides a stable installation foundation for the wire-releasing body 3 through the combined structure of the first side plate 2 fixed to the wire-releasing body, the fixing plate 5 of the wire-releasing body, and the second side plate 6 fixed to the wire-releasing body. The screw connection further ensures the rigidity of the connection between the wire-releasing body 3 and the bracket frame 55, reduces vibration interference during operation, and ensures the accuracy of the coordination of the rotating body assembly 56, the encoder assembly 57, etc. On the other hand, the magnetic adsorption seat 4 on the inside of the tin wire cover 7 cooperates with the magnet 9 on the wire-releasing body 3 or the wire-releasing bottom plate 17, which can not only quickly realize the alignment and closure of the tin wire cover 7, ensure the accurate relative position of the reel 16, the wire-releasing rotating shaft 38 and other components with the tin wire cover 7, avoid the tension stability of the welding wire 15 due to the offset of the cover body, but also enhance the sealing after closure, reduce the interference of external factors on the tension detection accuracy of the wire-releasing detection component 39, and indirectly improve the overall operation stability and process adaptability of the device.

[0064] The rotating body assembly 56 provides the primary pulling force for the welding wire 15 and, in some embodiments, is combined with Figure 5 and Figure 6 The rotating body assembly 56 includes a lower pressure wheel 30 and a stepping motor 11, which are combined Figure 7 and Figure 8The output shaft of the stepper motor 11 is connected to the lower pressure wheel 30. The stepper motor 11 is mounted on the payout base plate 17, with the stepper motor 11 and its output shaft located on opposite sides of the payout base plate 17. For example, the stepper motor 11 drives the lower pressure wheel 30 to rotate via its output shaft. While rotating, the lower pressure wheel 30 cooperates with the tensioning wheel assembly 58 to apply a pulling force to the welding wire 15 being paid out from the reel 16, causing it to leave the reel 16.

[0065] Such a design further optimizes the stability of the traction of the welding wire 15 and the rationality of the device layout. On the one hand, the stepper motor 11 acts as a power source to drive the lower pressure wheel 30, which can provide stable and controllable traction force, and cooperates with the tensioning wheel structural component 58 to apply directional tension to the welding wire 15, ensuring that the movement trajectory of the welding wire 15 released by the reel 16 is stable, and avoiding the welding wire 15 from being loose or too tight due to fluctuations in traction force. On the other hand, the stepper motor 11 and the output shaft are respectively located on two opposite sides of the pay-off base plate 17, which not only saves space on one side of the pay-off base plate 17 and avoids crowded interference of components, but also can separate the motor and the welding wire 15 traction area through the pay-off base plate 17, reducing the influence of motor vibration on the tension of the welding wire 15. On the other hand, the precise speed regulation characteristics of the stepper motor 11 can cooperate with the encoder component 57 to adjust the speed in real time, and adapt the wire-paying rhythm of the reel 16 by controlling the rotation speed of the lower pressure wheel 30, forming a linkage with the wire-paying detection component 39, and dynamically optimizing the traction force according to the tension detection results, further reducing the risk of wire breakage, and ensuring the continuity and stability of the supply of welding wire 15 in the high-speed welding process.

[0066] The encoder assembly 57 is one of the important components of each embodiment of the present application. In some embodiments, such as Figure 7 As shown, the encoder assembly 57 includes a pay-off encoder 14, an encoder fixing seat 22, and an encoder wheel 32; the encoder wheel 32 is sleeved on the pay-off encoder 14, the pay-off encoder 14 is set on the encoder fixing seat 22, and the encoder fixing seat 22 is set on the pay-off base plate 17. The pay-off encoder 14 is configured to cooperate with the rotating body assembly 56 to pull the welding wire 15; the pay-off encoder 14 cooperates with the encoder wheel 32 to facilitate the realization of high-precision tension, position control and pay-off speed adjustment. In some embodiments, the encoder assembly 57 also includes a handle 34, which is set on the encoder wheel 32 and is used to adjust the encoder wheel 32. The function of the handle 34 can be designed or adjusted according to actual needs, including but not limited to calibrating the encoder wheel 32 or installing the encoder wheel 32.

[0067] This design further enhances the accuracy of the device's control over the welding wire 15 and the ease of operation. On the one hand, the pay-off encoder 14 contacts the welding wire 15 through the encoder wheel 32, and can monitor the movement speed and displacement of the welding wire 15 in real time, and feed the data back to the control system, providing an accurate basis for adjusting the traction force of the rotating body assembly 56. In conjunction with the tension detection results of the pay-off detection assembly 39, a dual feedback mechanism is formed, which greatly improves the tension control accuracy. On the other hand, the encoder fixing seat 22 firmly mounts the pay-off encoder 14 on the pay-off base plate 17, ensuring stable contact between the encoder wheel 32 and the welding wire 15, avoiding detection errors caused by loose installation, and ensuring the accuracy of position control and speed regulation. On the other hand, the setting of the handle 34 facilitates manual calibration or installation and debugging of the encoder wheel 32, and can quickly adjust the contact state between the encoder wheel 32 and the welding wire 15 to ensure reliable detection data. This design enables the encoder assembly 57 to cooperate with the rotating body assembly 56 to achieve high-precision traction of the welding wire 15, and to support closed-loop tension control through real-time data feedback, effectively adapting to high-speed welding processes, reducing welding defects caused by speed or position deviations, and improving overall production efficiency.

[0068] In order to facilitate the fixation of the welding wire 15 to be used in the bonding process, in some embodiments, the power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device 100 also includes a thin aluminum tube fixing clamp 24 and a universal aluminum tube fixing seat 21. The thin aluminum tube fixing clamp 24 is arranged on the universal aluminum tube fixing seat 21, and the universal aluminum tube fixing seat 21 is arranged on the pay-off base plate 17. The thin aluminum tube fixing clamp 24 is used to clamp thin aluminum tubes, such as the square wire tube 18 to be described below. In some embodiments, the power component-based thick aluminum wire and aluminum ribbon bonding wire payoff drive device 100 further includes a square wire tube 18 and a wire tube 19. The wire tube 19 is disposed in the square wire tube 18, and the bonding wire 15 passes through the wire tube 19 for bonding. The square wire tube 18 is fixed to the payoff base plate 17. For embodiments having both the encoder fixing seat 22 and the universal aluminum tube fixing seat 21, in some embodiments, the encoder fixing seat 22 and the universal aluminum tube fixing seat 21 jointly clamp and fix the square wire tube 18. In some embodiments, the universal aluminum tube fixing seat 21 and the encoder fixing seat 22 are disposed adjacent to each other, that is, the two are close to but not in contact, so as to cooperate in clamping and fixing the square wire tube 18.

[0069] This design further ensures the stability and accuracy of the welding wire 15 in the transmission path and optimizes the structural coordination of the device. On the one hand, the thin aluminum tube fixing clamp 24 and the aluminum tube universal fixing seat 21 cooperate to fix the square wire tube 18, and the wire tube 19 serves as a direct channel for the welding wire 15, which can constrain the movement trajectory of the welding wire 15, preventing it from being offset due to shaking during transmission, and ensuring that the welding wire 15 reaches the welding area stably along the preset path after being released from the reel 16. On the other hand, the design of the encoder fixing seat 22 and the aluminum tube universal fixing seat 21 jointly clamping the square wire tube 18 not only enhances the installation rigidity of the square wire tube 18 and prevents it from being displaced under the pulling force of the welding wire 15, but also prevents the vibration transmission between the components from interfering with the detection accuracy of the encoder assembly 57 through the adjacent and non-contact layout of the two. On the other hand, this structure cooperates to ensure that the square wire tube 18 is precisely aligned with the encoder wheel 32, the lower pressure wheel 30 and other components, ensuring that the welding wire 15 has stable contact when passing through the encoder wheel 32, and improving the accuracy of the wire pay-off encoder 14 in detecting the length and speed of the welding wire 15. In addition, it cooperates with the tension feedback of the wire pay-off detection component 39 to optimize the traction control of the rotating body component 56, providing a stable and reliable supply of welding wire 15 for the high-speed welding process, and reducing welding defects caused by transmission deviation.

[0070] In some embodiments, such as Figure 7 and Figure 8 As shown, the tensioning wheel structural assembly 58 includes a first pay-off swing rod 26, a second rotating shaft 36, a first swing rod rotating shaft 59, a second rubber wheel 33, a first rubber wheel 31, a second pay-off swing rod 35, a first rotating shaft 28 and a second swing rod rotating shaft 37; Figure 6 The first rocker arm shaft 59 and the second rocker arm shaft 37 are respectively arranged on the wire-paying base plate 17; the first wire-paying rocker arm 26 is rotatably arranged on the first rocker arm shaft 59; the second wire-paying rocker arm 35 is rotatably arranged on the second rocker arm shaft 37; the first rubber wheel 31 is rotatably arranged on the first rotating shaft 28, and the first rotating shaft 28 is arranged on the first wire-paying rocker arm 26; the second rubber wheel 33 is rotatably arranged on the second rotating shaft 36, and the second rotating shaft 36 is arranged on the second wire-paying rocker arm 35; the first rubber wheel 31 and the second rubber wheel 33 respectively contact the welding wire 15. As an example, the first rubber wheel 31 is axially connected to the first rotating shaft 28 through a bearing 10; similarly, the second rubber wheel 33 is axially connected to the second rotating shaft 36 through a bearing 10; the first line-paying rocker 26 is axially connected to the first rocker rotating shaft 59 through a bearing 10; the second line-paying rocker 35 is axially connected to the second rocker rotating shaft 37 through a bearing 10; that is, there are multiple bearings 10, which are respectively axially connected to each structural member to realize the rotation function.

[0071] This design further enhances the flexibility of adjusting the tension of the welding wire 15 and the smoothness of its transmission, optimizing the device's dynamic adaptability. First, the first and second payoff levers 26 and 35 rotate around the first and second lever shafts 59 and 37, respectively, via bearings 10. These levers, in conjunction with the first and second rubber wheels 31 and 33, contact the welding wire 15, adaptively adjusting their angles as the tension of the welding wire 15 changes. The elastic deformation of the levers buffers tension fluctuations, preventing the welding wire 15 from breaking due to excessive instantaneous force. Second, the use of multiple bearings 10 reduces the frictional resistance of the rotating components, ensuring smooth rotation of the first and second rubber wheels 31, 33, and levers. This stabilizes the friction experienced by the welding wire 15 during the pulling process and reduces tension anomalies caused by sudden changes in resistance. On the other hand, when this structure works in conjunction with the rotating body assembly 56 and the encoder assembly 57, it can accurately control the release path and tension state of the welding wire 15, and cooperate with the real-time feedback of the wire release detection assembly 39 to provide reliable mechanical support for closed-loop tension control, effectively adapt to the dynamic requirements of the welding wire 15 in the high-speed welding process, and ensure the stability of the welding quality.

[0072] In some embodiments, the first pay-off rocker 26 and the second pay-off rocker 35 are connected to different spring tension adjustment blocks 27 via different tension springs 13. Figure 7 and Figure 8 As shown, the first wire-paying pendulum 26 is connected to the first spring tension adjustment block 27 via the first tension spring 13, and the second wire-paying pendulum 35 is connected to the second spring tension adjustment block 27 via the second tension spring 13. As an example, according to the different connection positions of the first wire-paying pendulum 26 and / or the second wire-paying pendulum 35 and the tension spring 13, the swing range of the first wire-paying pendulum 26 and the second wire-paying pendulum 35 can be adjusted, thereby adjusting the tension of the welding wire 15. In some embodiments, the first rubber wheel 31 and the lower pressure wheel 30 of the rotating body assembly 56 jointly clamp the welding wire 15 at the first position; the second rubber wheel 33 and the encoder wheel 32 of the encoder assembly 57 jointly clamp the welding wire 15 at the second position. It is understandable that the specific first position and second position are not limited, as long as the position of the welding wire 15 is controllable and the tension is accurate.

[0073] This design further enhances the accuracy and controllability of the tension adjustment of the welding wire 15 and optimizes the coordination and cooperation ability of the various components of the device. On the one hand, the first wire-releasing pendulum 26 and the second wire-releasing pendulum 35 are connected to the corresponding spring tension adjustment block 27 through different tension springs 13. By adjusting the position of the spring tension adjustment block 27 or the connection point of the tension spring 13, the swing range and restoring force of the pendulum can be flexibly set, thereby accurately adjusting the basic tension of the welding wire 15 to adapt to the traction requirements of thick aluminum wires or aluminum strips of different specifications. On the other hand, the first rubber wheel 31 and the lower pressure wheel 30, the second rubber wheel 33 and the encoder wheel 32 respectively clamp the welding wire 15 at different positions to form a multi-point collaborative constraint. This layout not only ensures that the welding wire 15 always maintains a stable posture during transmission, but also offsets the tension fluctuations of the reel 16 when the wire is released through the elastic buffering of the pendulum and the spring, and forms a dynamic tension adjustment closed loop in conjunction with the real-time monitoring of the wire-releasing detection component 39. On the other hand, the independent spring adjustment structure enables the two rocker arms to adapt to the traction rhythm of the rotating body assembly 56 and the detection requirements of the encoder assembly 57 respectively, ensuring the consistency of the tension of the welding wire 15 during high-speed welding, reducing the risk of wire breakage, and improving the stability of precision welding.

[0074] In order to ensure the accurate position and controllable tension of the welding wire 15, in some embodiments, such as Figure 7 and Figure 8 As shown, the tensioning wheel structure assembly 58 also includes a first needle roller 12 provided on the first pay-off rocker 26 and an aluminum wire limiting column 29 provided on the first needle roller 12; the aluminum wire limiting column 29 is configured to clamp the welding wire 15 at a third position adjacent to the first position, and the direction in which the aluminum wire limiting column 29 clamps the welding wire 15 is perpendicular to the direction in which the first rubber wheel 31 cooperates with the lower pressure wheel 30 to clamp the welding wire 15; in some embodiments, the power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device 100 also includes a second needle roller assembly 20, and the second needle roller assembly 20 is configured to clamp the welding wire 15 at a fourth position adjacent to the second position, and the direction in which the welding wire 15 is clamped at the fourth position is perpendicular to the direction in which the second rubber wheel 33 cooperates with the encoder wheel 32 to clamp the welding wire 15. As an example, the power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device 100 further includes a pin needle fixing seat 23, which is arranged on the pay-off base plate 17 or the aluminum tube universal fixing seat 21 for fixing the pin needle. The following example illustrates the tension and traction of the welding wire 15, combined with Figures 5 to 8It can be seen that the welding wire 15 released from the reel 16 first passes through the clamping limit of the aluminum wire limit column 29 on the first needle roller 12, and then passes through the clamping of the first rubber wheel 31 and the lower pressure wheel 30, cooperates with the rotation and traction of the lower pressure wheel 30, and then passes through the wire-releasing detection component 39 to turn, and then passes through the clamping guidance of the second rubber wheel 33 and the encoder wheel 32, and then passes through the clamping limit of the second needle roller assembly 20, and finally is pulled to the bonding process position by the wire tube 19, that is, the free end 60 of the welding wire 15 coming out of the reel 16 is located at the bonding process position, i.e., the bonding position 61, under the traction of the wire tube 19.

[0075] This design further improves the accuracy and tension stability of the transmission of the welding wire 15 through multi-dimensional limiting and coordinated constraints, and strengthens the linkage control capabilities of each link of the device. On the one hand, the aluminum wire limiting column 29 clamps the welding wire 15 in the third position perpendicular to the clamping direction of the first rubber wheel 31 and the lower pressure wheel 30, forming a "horizontal + vertical" three-dimensional constraint, which can not only prevent the welding wire 15 from deviating left and right when clamped in the first position, but also ensure the stability of its contact angle with the lower pressure wheel 30 through limiting, avoiding uneven traction caused by position deviation. The second needle roller assembly 20 is limited in the fourth position perpendicular to the clamping direction of the second rubber wheel 33 and the encoder wheel 32. Similarly, it can constrain the welding wire 15 from shaking up and down in the second position, ensuring its stable contact with the encoder wheel 32, and improving the accuracy of the wire-laying encoder 14 in detecting the length and speed of the welding wire 15. On the other hand, from the perspective of the transmission path, the welding wire 15 is first initially oriented by the aluminum wire limiting column 29, then pulled by the first rubber wheel 31 and the lower pressure wheel 30. After tension detection by the wire payout detection assembly 39, it is guided by the second rubber wheel 33 and the encoder wheel 32, and finally, after being limited again by the second needle roller assembly 20, it enters the wire tube 19. In addition, the multi-node vertical clamping design forms a continuous trajectory correction mechanism, ensuring the stability of the welding wire 15's entire path from the reel 16 to the bonding position 61, reducing tension fluctuations caused by trajectory deviation. Furthermore, the pin pin holder 23 fixes the pin pins, helping to strengthen the path constraint and, together with the aluminum wire limiting column 29 and the second needle roller assembly 20, construct a precise transmission channel. Furthermore, this design, combined with the traction adjustment of the rotating body assembly 56 and the tension feedback of the wire payout detection assembly 39, can further reduce the risk of wire breakage of thick aluminum wire or aluminum strip, ensure the stability of the welding wire 15 supply during high-speed welding, improve the efficiency and quality of precision welding, and adapt to the high-precision requirements of automated production lines.

[0076] As an example, Figure 9 and Figure 10As shown, the pay-out detection assembly 39 includes a light shielding member 48, an optical fiber 49, a button magnet 50, an inner baffle 51, an outer cover 52, a pay-out optical fiber seat 53 and a pay-out stopper 54; the optical fiber 49 is arranged on the pay-out optical fiber seat 53, and the pay-out optical fiber seat 53 is installed on the inner baffle 51. The inner baffle 51 and the outer cover 52 are respectively provided with the button magnet 50 for alignment connection and leave a line-passing gap, so that the welding wire 15 passes through the pay-out detection assembly 39 from the line-passing gap and is located in the detection position range of the pay-out optical fiber seat 53. Light shielding members 48 such as self-adhesive black cloth with glue on the back are respectively provided on both sides of the outer cover 52, and pay-out stoppers 54 are respectively provided on both sides of the inner baffle 51; the pay-out optical fiber seat 53 is provided with an optical fiber sensor to collect sensing signals, which are output through the optical fiber 49 for detection. As an example, Figure 4 and Figure 5 As shown, the power component-based thick aluminum wire and aluminum ribbon welding wire pay-off driving device 100 further includes an optical fiber amplifier 8, which is connected to the optical fiber 49 to amplify the output sensing signal. As an example, in a specific application, such as Figure 6 and Figure 7 As shown, the payout fiber holder 53 detects whether the welding wire 15 is within the detection position range 62 of the payout fiber holder 53. If so, no processing is required. If not, a signal is sent to activate the rotator assembly 56 or its stepper motor 11. The rotator assembly 56 or its stepper motor 11 operates to drive the lower pressure wheel 30 to rotate, and cooperates with the tensioning wheel structure assembly 58 or its first rubber wheel 31 to pull the welding wire 15 from the reel 16. As an example, when the welding wire 15 is above the detection position range 62, the stepper motor 11 operates to cause the reel 16 to pay out the wire until the welding wire 15 is below the detection position range 62. As an example, if not, a signal is sent, and the encoder assembly 57 or its encoder wheel 32 is also activated. The encoder assembly 57 or its encoder wheel 32 works in coordination, and the combination of the second rubber wheel 33 and the encoder wheel 32 cooperates with the combination of the first rubber wheel 31 and the lower pressure wheel 30 to pull, one end pulling and the other end feeding, so that the tension is balanced.

[0077] This design, on the one hand, further enhances the real-time and accuracy of the tension adjustment of the welding wire 15 through high-precision detection and dynamic linkage control, providing core support for the closed-loop control of the device and significantly improving the stability of the overall operation. On the other hand, the inner baffle 51 and the outer cover 52 are aligned and connected via the button magnet 50, which not only ensures the stability of the wire clearance to constrain the threading path of the welding wire 15, but also facilitates quick disassembly and maintenance; the light shielding members 48 on both sides reduce external light interference, and the wire-releasing block 54 limits the lateral deviation of the welding wire 15, together creating a stable detection environment for the fiber optic sensor of the wire-releasing fiber optic holder 53, and improving the accuracy of position judgment. In addition, the fiber optic amplifier 8 amplifies the sensing signal to ensure that even weak signals can be accurately identified, avoiding detection delays or misjudgments caused by signal attenuation. On the other hand, the payout fiber optic holder 53 monitors the weld wire 15 in real time to see if it is within the detection position range 62, forming a closed-loop mechanism of detection, feedback, and adjustment. If the position of the weld wire 15 is abnormal, the stepper motor 11 of the rotating assembly 56 and the encoder wheel 32 of the encoder assembly 57 are immediately linked. Through the traction of the lower pressure wheel 30 and the first rubber wheel 31, and the coordination of the second rubber wheel 33 and the encoder wheel 32, dynamic adjustment of the pulling and feeding is achieved. For example, if the weld wire 15 is tilted upward, the stepper motor 11 drives the payout until the position is reached, ensuring that the tension remains within a reasonable range and avoiding excessive looseness or tightness. Furthermore, this design not only prevents sudden changes in the weld wire 15's tension due to positional deviation through real-time response, significantly reducing the risk of wire breakage, but also enhances the device's adaptability to high-speed welding processes through fiber optic detection and multi-component linkage, providing reliable tension and position control for unmanned operation of automated production lines, further improving the efficiency and quality stability of thick aluminum wire and aluminum strip welding.

[0078] As an example, Figure 11 and Figure 12 As shown, the pay-off rotating shaft 38 includes a damping seat 47, and the damping seat 47 is configured to buffer and adjust the rotation speed of the pay-off rotating shaft 38, so as to play a role in stably controlling the rotation speed of the pay-off rotating shaft 38. Figure 13As an example, the pay-off rotating shaft 38 includes a deep groove ball bearing 40, a bearing snap ring 41, an elastic wheel core shaft 42, a wheel core pressure shaft 43, a wire drum spring piece 44, a spring piece pressure ring 45, a wheel core end shaft 46 and a damping seat 47; the wire drum spring piece 44 is inserted on the elastic wheel core shaft 42, and the two ends of the wire drum spring piece 44 are respectively fixed by the wheel core pressure shaft 43 and the spring piece pressure ring 45; the reel 16 is sleeved on the outside of the wire drum spring piece 44, that is, the wire drum spring piece 44 and the elastic wheel core The shaft 42 passes through the reel 16; the deep groove ball bearing 40 is disposed in the bearing retaining ring 41. One end of the inner ring of the deep groove ball bearing 40 is connected to the damping seat 47 via the wheel core end shaft 46, and the other end is connected to the elastic wheel core shaft 42, so that the reel 16 can achieve elastic buffering and prevent the tightness of the welding wire 15 from changing drastically in a short period of time. Specifically, when the reel 16 rotates, it drives the elastic wheel core shaft 42 to rotate, and the deep groove ball bearing 40 drives the reel through the wheel core end shaft 46. As an example, at least three wire drum springs 44 are evenly inserted on the elastic wheel core shaft 42 relative to the axial direction of the elastic wheel core shaft 42. Each wire drum spring 44 and the elastic wheel core shaft 42 form a rotating integral shaft structure, and the reel 16 is sleeved outside the rotating integral shaft structure.

[0079] This design, on the one hand, further optimizes the stability of the tension adjustment of the welding wire 15 through multi-level elastic buffering and precise speed control, provides key mechanical support for the tension closed-loop control of the device, and significantly improves the adaptability in high-speed welding scenarios. On the other hand, the damping seat 47 directly buffers and adjusts the rotation speed of the pay-off rotating shaft 38, preventing the reel 16 from causing sudden changes in speed due to inertia or external forces, and ensuring a stable pay-off speed of the welding wire 15; the deep groove ball bearing 40 cooperates with the bearing retaining ring 41 to reduce the friction resistance of the pay-off rotating shaft 38 during rotation, ensuring its smooth rotation and reducing tension fluctuations caused by mechanical jamming. The wire reel spring 44 is evenly inserted into the elastic wheel core shaft 42 to form a rotating integral shaft structure, which absorbs the impact energy of the reel 16 during rotation through elastic deformation, and can also ensure that the reel 16 and the shaft rotate synchronously through the wheel core pressure shaft 43 and the spring pressure ring 45, avoiding uneven tightness of the welding wire 15 caused by relative sliding. On the other hand, the elastic buffer design of the pay-off rotary shaft 38 cooperates with the rotating body assembly 56 and the tensioning wheel structural assembly 58: when the lower pressure wheel 30 of the rotating body assembly 56 pulls the welding wire 15, the elastic deformation of the wire drum spring 44 and the elastic wheel core shaft 42 can buffer the instantaneous pulling force, preventing the welding wire 15 from breaking due to sudden over-tension; when the pay-off detection assembly 39 detects that the welding wire 15 is slack, the damping seat 47 adjusts the speed of the pay-off rotary shaft 38, cooperating with the rubber wheel constraint of the tensioning wheel structural assembly 58 to quickly restore tension balance. On the other hand, this design not only solves the problem of wire breakage caused by sudden tension changes in the welding of thick aluminum wire or aluminum strip, but also adapts to the high-speed beat of ultrasonic welding machines or laser welding machines through stable speed and elastic buffering, providing a reliable supply of welding wire 15 for the unmanned operation of automated production lines.

[0080] As an example, the structural design of the pay-off rotating shaft 38 achieves precise buffering and stable control during the pay-off process of the welding wire 15 through the coordinated action of multiple components, providing core mechanical support for the overall tension adjustment of the device. Its structural details improve the stability of the pay-off of the reel 16, thereby improving the accuracy of tension control. As an example, at least three wire reel springs 44 are evenly inserted relative to the axial direction of the elastic wheel core shaft 42, and the two ends are fixed by the wheel core pressure shaft 43 and the spring pressure ring 45, forming a rotating integral shaft structure with the elastic wheel core shaft 42. The reel 16 is sleeved outside the integral structure to ensure that the reel 16 and the shaft body rotate synchronously with the force balance; the deep groove ball bearing 40 is set in the bearing retaining ring 41, and one end of its inner ring is connected to the damping seat 47 through the wheel core end shaft 46, and the other end is connected to the elastic wheel core shaft 42, forming a complete force transmission and buffering link. In this way, on the one hand, the elastic characteristics of the wire drum shrapnel 44 and the elastic wheel core shaft 42 can absorb the impact energy through deformation when the reel 16 rotates, and cooperate with the smooth rotation of the deep groove ball bearing 40 to avoid sudden changes in the tightness of the welding wire 15 in a short time, and effectively reduce the risk of wire breakage; on the other hand, the damping seat 47 can accurately buffer and adjust the rotation speed of the wire-releasing rotating shaft 38 to prevent the reel 16 from losing control of the speed due to inertia, and ensure the stability of the welding wire 15 release speed; on the other hand, the overall structure cooperates with the rotating body assembly 56 and the tensioning wheel structure assembly 58. When the wire-releasing detection assembly 39 feedbacks abnormal tension, it can quickly achieve tension balance through elastic buffering and traction adjustment, adapt to the requirements of high-speed welding process, and provide reliable guarantee for the stable operation of the automated production line.

[0081] Next, continue to combine Figures 1 to 13, to illustrate with examples. In some embodiments, the thick aluminum wire and aluminum strip welding wire pay-off drive device 100 based on power components includes a drive module as the rotating body component 56, a closed-loop tension control system as the tensioning wheel structure component 58, a thick aluminum wire or aluminum strip guide buffer mechanism as the pay-off rotary shaft 38 and the pay-off detection component 39; the reel 16 of the pay-off body 3 serves as a pay-off reel, which cooperates with the rotating body component 56 to realize pay-off, and the pay-off reel drives the pay-off rotary shaft 38 to realize a damping effect to follow the pay-off, which can ensure the tightness of the wire during the pay-off process and the accuracy of the pay-off position; and the thick aluminum wire and aluminum strip welding wire pay-off drive device 100 based on power components supports a variety of wire diameters of thick aluminum wire or aluminum strip, with a wire diameter of It is applicable to thick aluminum wires ranging from 5mil to 20mil and aluminum strips with specifications ranging from 4×20mil to 10×80mil, and can be adaptively adjusted, so it has strong compatibility; the tension control accuracy of the thick aluminum wire and aluminum strip welding wire pay-off drive device 100 based on power components is improved to ±0.5N in the test, and the welding breakage rate is reduced by 60% compared with the old winding equipment; the rotating body assembly 56, the encoder assembly 57, the wire-tensioning wheel structure assembly 58, the pay-off rotating shaft 38 and the pay-off detection assembly 39 can adopt a flexible material buffer design to avoid scratches on the material surface; the wire-tensioning wheel structure assembly 58, the pay-off detection assembly 39 and the rotating body assembly 56 can be set in linkage, and cooperate with the optical fiber buffer structure to feedback data to the control system in real time to form a closed-loop control.

[0082] The following example illustrates the installation method of the power component-based thick aluminum wire and aluminum ribbon bonding wire pay-off driving device 100 .

[0083] First, assemble the pay-off rotating shaft 38: install the deep groove ball bearing 40, bearing retaining ring 41, elastic wheel core shaft 42, wheel core pressure shaft 43, wire drum spring 44, spring pressure ring 45, wheel core end shaft 46, and damping seat 47 together in sequence to form the pay-off rotating shaft 38.

[0084] Next, assemble the pay-out detection assembly 39: sequentially install the light-shielding piece 48, optical fiber 49, button magnet 50, inner baffle 51, outer cover 52, pay-out optical fiber holder 53, pay-out stop block 54, etc. to form the pay-out detection assembly 39.

[0085] Then assemble the pay-off body 3: first install the lower pressure wheel 30 and the stepper motor 11 together, and then assemble the rotating shaft 28, the second rubber wheel 33, the first pay-off rocker 26, the first roller needle 12, the aluminum wire limit column 29, the tension spring 13, and the spring tension adjustment block 27 into an assembly, and then install the thin aluminum tube fixing clamp 24, the encoder wheel 32, the pay-off encoder 14, etc. into an integrated assembly, and then assemble the rocker rotating shaft 37, the second pay-off rocker 35, the bearing 10, the first rubber wheel 31, and the rotating shaft 36 into an integral structure, and finally connect and install the pay-off rotating shaft 38 and the pay-off detection assembly 39 through the pay-off bottom plate 17 to form a pay-off body 3 with the pay-off rotating shaft 38 and the pay-off detection assembly 39.

[0086] Finally, the pay-off body 3 with the pay-off rotating shaft 38 and the pay-off detection component 39, the hinge 1, the pay-off body fixed first side plate 2, the magnet adsorption seat 4, the pay-off body fixing plate 5, the pay-off body fixed second side plate 6 and the tin wire cover 7 are installed together to form the final product, that is, the thick aluminum wire and aluminum strip welding wire pay-off drive device 100 based on power components.

[0087] By energizing the stepper motor 11 and the pay-off encoder 14, and combining with the pay-off detection component 39, cooperating with other equipment, such as applying a set bonding force to the Z-axis of the welding head of the thick aluminum wire or aluminum strip, and combining a multi-axis collaborative controller with a compensation algorithm, precise pay-off synchronous motion control is achieved, and finally the bonding of the thick aluminum wire and / or aluminum strip is completed.

[0088] This design is suitable for the precision welding of thick aluminum wires and aluminum strips on semiconductor wire bonding machines 15; the aluminum strip welding speed is increased to 15m / min, and the uniformity of the solder joints is improved by 30%; compared with traditional mechanical drive devices, the power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device 100 reduces the wire breakage rate from 12% to 4.8% in the welding of thick aluminum wires not exceeding 20mil; in conjunction with the automation system, welding parameters such as wire diameter and speed can be preset in the human-machine interface, and the system automatically matches the optimal tension threshold; and by adding an aluminum strip guide buffer mechanism, the offset is detected by a photoelectric sensor, and the motor is driven micro- Adjustment; the overall closed-loop tension control system can be used, which can provide real-time feedback on the length of the aluminum wire and aluminum strip in the pay-off path to the control unit to achieve closed-loop control; and it is compatible with high-speed welding processes. When used with an ultrasonic welding machine or a laser welding machine, the platform can achieve millisecond-level action switching, adapt to the high-speed beat of the welding machine, and improve the overall production line efficiency; the thick aluminum wire and aluminum strip welding wire pay-off drive device 100 based on power components also has automated integration capabilities, supports seamless docking with industrial robots or intelligent control systems such as PLCs, and realizes multi-station collaborative operation through preset programs, reducing manual intervention, and is suitable for flexible production lines.

[0089] It should be noted that other embodiments of the present application also include a thick aluminum wire and aluminum ribbon bonding wire pay-off drive device based on power components that is formed by combining the technical features in the above embodiments and can be implemented.

[0090] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A thick aluminum wire and aluminum strip welding wire pay-off drive device (100) based on power components, characterized in that: It includes a pay-off body (3), a pay-off rotating shaft (38) and a pay-off detection component (39); The pay-off body (3) comprises a reel (16), a pay-off base plate (17), a rotating body assembly (56), an encoder assembly (57) and a tensioning wheel structural assembly (58); The pay-off rotating shaft (38), the pay-off detection assembly (39), the rotating body assembly (56), the encoder assembly (57) and the tensioning wheel structure assembly (58) are respectively arranged on the pay-off bottom plate (17); The rotating body assembly (56) and the encoder assembly (57) are configured to cooperate with pulling the welding wire (15) released by the reel (16); The pay-off rotating shaft (38) is configured to pass through the pay-off bottom plate (17) and be connected to the reel (16), and the pay-off rotating shaft (38) cooperates with the rotating body assembly (56) and the tensioning wheel structural assembly (58) to jointly adjust the tightness of the welding wire (15); The wire-paying detection component (39) is configured to perform tension detection on the welding wire (15), and the wire-paying detection component (39) is linked with the rotating body component (56) and the encoder component (57) to adjust the rotating body component (56) and the encoder component (57) according to the tension detection result.

2. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 1, characterized in that: The encoder assembly (57) includes a pay-off encoder (14), an encoder fixing seat (22) and an encoder wheel (32); The encoder wheel (32) is sleeved on the pay-off encoder (14), the pay-off encoder (14) is arranged on the encoder fixing seat (22), the encoder fixing seat (22) is arranged on the pay-off bottom plate (17), and the pay-off encoder (14) is configured to cooperate with the rotating body assembly (56) to pull the welding wire (15); or, The power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device (100) further comprises a thin aluminum tube fixing clamp (24) and a universal aluminum tube fixing seat (21), wherein the thin aluminum tube fixing clamp (24) is arranged on the universal aluminum tube fixing seat (21), and the universal aluminum tube fixing seat (21) is arranged on the pay-off bottom plate (17), and the thin aluminum tube fixing clamp (24) is used for clamping the thin aluminum tube.

3. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 2, characterized in that: The power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device (100) further includes a square wire tube (18) and a wire tube (19), wherein the wire tube (19) is arranged in the square wire tube (18), the welding wire (15) passes through the wire tube (19) for bonding, and the square wire tube (18) is fixed on the pay-off bottom plate (17), or the encoder fixing seat (22) and the aluminum tube universal fixing seat (21) jointly clamp and fix the square wire tube (18); or, The encoder assembly (57) further includes a handle (34), wherein the handle (34) is disposed on the encoder wheel (32) and is used to adjust the encoder wheel (32); or, The aluminum tube universal fixing seat (21) is arranged adjacent to the encoder fixing seat (22).

4. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 1, characterized in that: The tensioning wheel structural assembly (58) includes a first pay-off swing lever (26), a second rotating shaft (36), a first swing lever rotating shaft (59), a second rubber wheel (33), a first rubber wheel (31), a second pay-off swing lever (35), a first rotating shaft (28), and a second swing lever rotating shaft (37); The first swing arm rotating shaft (59) and the second swing arm rotating shaft (37) are respectively arranged on the line-releasing bottom plate (17); The first pay-off rocker (26) is rotatably disposed on the first rocker shaft (59); The second pay-off rocker (35) is rotatably disposed on the second rocker shaft (37); The first rubber wheel (31) is rotatably disposed on the first rotating shaft (28), and the first rotating shaft (28) is disposed on the first pay-off rocker (26); The second rubber wheel (33) is rotatably arranged on the second rotating shaft (36), and the second rotating shaft (36) is arranged on the second pay-off rocker (35); The first rubber wheel (31) and the second rubber wheel (33) respectively contact the welding line (15).

5. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 4, characterized in that: The first pay-off swing rod (26) and the second pay-off swing rod (35) are respectively connected to different spring tension adjustment blocks (27) via different tension springs (13).

6. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 4, characterized in that: The first rubber wheel (31) and the lower pressure wheel (30) of the rotating body assembly (56) jointly clamp the welding wire (15) at a first position; the second rubber wheel (33) and the encoder wheel (32) of the encoder assembly (57) jointly clamp the welding wire (15) at a second position.

7. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 6, characterized in that: The tensioning wheel structural assembly (58) further includes a first needle roller (12) provided on the first pay-off rocker (26) and an aluminum wire limiting column (29) provided on the first needle roller (12); the aluminum wire limiting column (29) is configured to clamp the welding wire (15) at a third position adjacent to the first position, and the direction in which the aluminum wire limiting column (29) clamps the welding wire (15) is perpendicular to the direction in which the first rubber wheel (31) cooperates with the lower pressure wheel (30) to clamp the welding wire (15); or, The power component-based thick aluminum wire and aluminum strip welding wire pay-off drive device (100) further includes a second needle roller assembly (20), wherein the second needle roller assembly (20) is configured to clamp the welding wire (15) at a fourth position adjacent to the second position, and the direction of clamping the welding wire (15) at the fourth position is perpendicular to the direction in which the second rubber wheel (33) cooperates with the encoder wheel (32) to clamp the welding wire (15).

8. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 1, characterized in that: The rotating body assembly (56) comprises a lower pressure wheel (30) and a stepping motor (11), wherein the output shaft of the stepping motor (11) is drivingly connected to the lower pressure wheel (30); The stepper motor (11) is arranged on the wire-laying base plate (17), and the stepper motor (11) and its output shaft are respectively located on two opposite sides of the wire-laying base plate (17).

9. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to any one of claims 1 to 8, characterized in that: The power component-based thick aluminum wire and aluminum ribbon welding wire pay-off drive device (100) further comprises a tin wire cover (7) and a bracket frame (55) connected to each other, the pay-off body (3) is arranged on the bracket frame (55), and the tin wire cover (7) is covered on the pay-off body (3).

10. The thick aluminum wire and aluminum ribbon bonding wire pay-off driving device (100) based on power components according to claim 9, characterized in that: The power component-based thick aluminum wire and aluminum ribbon welding wire pay-off drive device (100) further includes a hinge (1), and the tin wire cover (7) is connected to the bracket frame (55) via the hinge (1); or, The bracket frame (55) comprises a first side plate (2) for fixing the wire-releasing body, a fixing plate (5) for the wire-releasing body, and a second side plate (6) for fixing the wire-releasing body; the first side plate (2) for fixing the wire-releasing body and the second side plate (6) for fixing the wire-releasing body are connected via two fixing plates (5) for the wire-releasing body to form the bracket frame (55); The wire-releasing body (3) is respectively screwed onto the wire-releasing body fixed first side plate (2), the wire-releasing body fixed plate (5), and the wire-releasing body fixed second side plate (6).

Images