A self-lubricating aluminum wire cutter

Abstract

This utility model relates to a self-lubricating aluminum wire splitter, belonging to the technical field of aluminum wire splitter technology. The self-lubricating aluminum wire splitter includes: a splitter body, a lubrication component, an oil reservoir, and an aluminum wire body. The splitter body has a precisely machined oil reservoir and oil pipe inside. The oil pipe is located below the oil reservoir and communicates with it, forming a lubricating oil delivery channel. During processing, the aluminum wire body is split and bonded by the splitter body. The splitter body has a labyrinthine oil pipe connected to an external lubrication interface, enabling micro-volume, timed oil supply, precisely located at the bottom end of the oil pipe. The core function of the lubrication component is to uniformly transmit oil, ensuring that the lubricating oil is stably and continuously delivered to the contact surface between the aluminum wire body and the splitter body, thereby effectively reducing friction, improving processing accuracy, and extending the service life of the splitter. This self-lubricating design not only simplifies the lubrication process but also significantly improves the working performance and stability of the aluminum wire splitter.

Description

Technical Field

[0001] This utility model relates to the field of aluminum wire splitting blade technology, and in particular to a self-lubricating aluminum wire splitting blade. Background Technology

[0002] Traditional aluminum wire bonders are key tools in the microelectronics packaging field. Made of high-hardness, wear-resistant materials such as tungsten carbide, their core structure includes a precisely designed blade and a shank. The blade, with its specific angle and curvature, is a crucial component in the aluminum wire bonding process. During semiconductor packaging, the aluminum wire is transported to the blade tip through internal channels. Under the combined effects of pressure, temperature, and ultrasonic vibration, the aluminum wire undergoes plastic deformation with the chip pads or pin surfaces. This breaks down the oxide film, and through atomic diffusion, metal covalent bonds are formed, ultimately achieving stable electrical connection and mechanical fixation. This tool is widely used in power electronic device packaging, especially in scenarios requiring high current transmission, such as automotive power modules. It ensures the conductivity and reliability of the bonding points through thermo-pressing or ultrasonic bonding processes.

[0003] If lubrication is inadequate during the processing of traditional aluminum wire cutters, it may lead to increased friction between the cutter blade and the aluminum wire, resulting in faster blade wear. This necessitates frequent tool replacements, increasing production costs. The aluminum wire surface is also prone to defects such as scratches and burrs, affecting the conductivity and reliability of the bonding points. Increased frictional heat during bonding may cause the aluminum wire oxide layer to thicken, reducing welding strength. It may also increase the operating resistance of the equipment, potentially causing vibration or misalignment, affecting bonding accuracy, and even leading to quality problems such as aluminum wire breakage or poor weld joints. Utility Model Content

[0004] Therefore, it is necessary to address the problems that inadequate lubrication may lead to increased friction between the cutting edge of the cleaver and the aluminum wire, resulting in faster wear of the cutting edge, requiring frequent tool replacements, increasing production costs, and causing defects such as scratches and burrs on the aluminum wire surface, affecting the conductivity and reliability of the bonding points. During the bonding process, increased frictional heat may lead to a thicker oxide layer on the aluminum wire, reducing welding strength, and also increasing the operating resistance of the equipment, which may cause vibration or displacement, affecting bonding accuracy, and even causing quality problems such as aluminum wire breakage or poor solder joints. To address these issues, a self-lubricating aluminum wire cleaver is needed.

[0005] A self-lubricating aluminum wire splitter includes: a splitter body, an oil reservoir and an oil pipe inside the splitter body, the oil pipe being located below the oil reservoir and communicating with each other, and an aluminum wire body being movably disposed below the oil pipe;

[0006] A lubrication assembly is disposed on the blade body and located above the aluminum wire body, the lubrication assembly being located at the bottom port of the oil pipe.

[0007] In one embodiment, the oil reservoir has a labyrinthine oil passage inside, and the interface at the bottom of the oil reservoir is connected to the lubrication assembly.

[0008] In one embodiment, the lubrication assembly includes a sleeve fixed inside the body of the cleaver, an oil-absorbing cotton is fixedly inserted inside the sleeve, and a roller brush is movably connected below the oil-absorbing cotton, with the lower part of the roller brush movably in contact with the aluminum wire body.

[0009] In one embodiment, a fixing ring is fixedly connected above the oil-absorbing cotton, and the fixing ring is fixed to the inner wall of the sleeve.

[0010] In one embodiment, a fixing frame is provided below the chopping blade body, and two fixing frames are respectively located on both sides of the roller brush. A rotating shaft is movably inserted into the axis of the roller brush, and the roller brush rotates around the rotating shaft.

[0011] In one embodiment, limiting discs are fitted on both sides of the rotating shaft, and the side of the two limiting discs that are close to each other is in contact with the outer walls of both sides of the roller brush.

[0012] In one embodiment, the surface of the roller brush is provided with an oil guide groove, which surrounds the surface of the roller brush.

[0013] In one embodiment, the two mounting brackets are internally fitted with telescopic rods that are located below the chopping block body and move vertically upwards and downwards.

[0014] Beneficial effects

[0015] 1. The cleaver body serves as the foundation of the entire structure. Inside the cleaver body, there is a precisely designed oil reservoir and oil pipe. The oil pipe is located below the oil reservoir and connects to it, forming a lubricating oil delivery channel. During processing, the aluminum wire is cleaved and bonded by the cleaver body. The cleaver body has a labyrinthine oil pipe design that connects to an external lubrication interface, enabling micro-volume, timed oil supply. The lubrication component is cleverly positioned on the cleaver body, above the aluminum wire and precisely at the bottom end of the oil pipe. The core function of the lubrication component is to uniformly transmit oil, ensuring that the lubricating oil is stably and continuously delivered to the contact surface between the aluminum wire and the cleaver body. This effectively reduces friction, improves processing accuracy, and extends the cleaver's service life. This self-lubricating design not only simplifies the lubrication process but also significantly improves the working performance and stability of the aluminum wire cleaver.

[0016] 2. A high-precision ceramic retaining ring is bonded to the top of the oil-absorbing cotton. This retaining ring adopts a split design and is rigidly connected to the inner wall of the sleeve through laser welding, which improves structural stability. Two sets of retaining frames are symmetrically arranged below the cutter body. The two sets of retaining frames are located on both sides of the roller brush axis, forming a mechanical limit for the lubrication components. A silicon nitride ceramic rotating shaft is movably inserted into the axis of the roller brush through a precision bearing. The surface of the rotating shaft is treated with micro-arc oxidation. When the equipment is running, the rotating shaft is driven by the friction of the aluminum wire body to generate passive rotation. Using centrifugal force, the lubricating oil absorbed by the oil-absorbing cotton is evenly distributed radially on the surface of the aluminum wire. This can achieve precise quantitative supply of lubricant in the bonding area of ​​the aluminum wire, effectively avoiding the bonding point void defects caused by uneven lubrication in traditional cutters. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side sectional view of the cleaver body of this utility model;

[0020] Figure 3 This is a schematic diagram of the lubrication component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the limiting disk structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the oil-absorbing cotton structure of this utility model.

[0023] Figure label:

[0024] 100. Cleaver body; 101. Oil reservoir; 102. Oil pipe; 200. Aluminum wire body; 300. Lubrication assembly; 301. Oil absorbent cotton; 3011. Fixing ring; 302. Roller brush; 3021. Oil guide groove; 303. Sleeve; 304. Fixing bracket; 305. Rotating shaft; 306. Limiting plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The following is combined Figures 1-5 This invention describes a self-lubricating aluminum wire cutter.

[0027] In one embodiment, a self-lubricating aluminum wire splitter includes: a splitter body 100 and a lubrication component 300. The splitter body 100 has an oil reservoir 101 and an oil pipe 102 inside. The oil pipe 102 is located below the oil reservoir 101 and is interconnected with it. The aluminum wire body 200 is movably arranged below the oil pipe 102. The lubrication component 300 is disposed on the splitter body 100 and located above the aluminum wire body 200. The lubrication component 300 is located at the bottom port of the oil pipe 102.

[0028] In this embodiment, the cleaver body 100 serves as the foundation of the entire structure. The cleaver body 100 is precisely equipped with an oil storage box 101 and an oil pipe 102. The oil pipe 102 is located below the oil storage box 101 and communicates with it to form a lubricating oil delivery channel. During the processing, the aluminum wire body 200 is cleaved and bonded by the cleaver body 100. The cleaver body 100 is designed with a labyrinthine oil pipe 102 to connect to an external lubrication interface, which can realize micro-volume and timed oil supply.

[0029] The lubrication component 300 is cleverly positioned on the cleaver body 100, above the aluminum wire body 200, and precisely at the bottom port of the oil pipe 102. The core function of the lubrication component 300 is to uniformly transmit oil through the circuit, ensuring that the lubricating oil can be stably and continuously delivered to the contact surface between the aluminum wire body 200 and the cleaver body 100, thereby effectively reducing friction, improving processing accuracy and the service life of the cleaver. This self-lubricating design not only simplifies the lubrication process but also significantly improves the working performance and stability of the aluminum wire cleaver.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the oil storage box 101 has a labyrinthine oil passage inside. The lower interface of the oil storage box 101 is connected to the lubrication component 300. The lubrication component 300 includes a sleeve 303 fixed inside the blade body 100. An oil-absorbing cotton 301 is fixedly inserted inside the sleeve 303. A roller brush 302 is movably connected below the oil-absorbing cotton 301. The lower part of the roller brush 302 is movably attached to the aluminum wire body 200.

[0031] In this embodiment, the oil pipe 102 uses a precisely designed tortuous channel to promote the uniform distribution of lubricating oil through capillary action, effectively preventing leakage and oversupply, and ensuring stable delivery of lubricating oil to the lubrication component 300. The lower interface of the oil storage box 101 is seamlessly connected to the lubrication component 300. The lubrication component 300 includes a sleeve 303 precisely fixed inside the chopping blade body 100. The sleeve 303 is made of wear-resistant material to ensure stability under long-term use. An oil-absorbing cotton 301 made of highly absorbent material is tightly inserted inside the sleeve. The oil-absorbing cotton 301 can effectively absorb and store lubricating oil from the labyrinthine oil circuit. A roller brush 302 is movably connected below the oil-absorbing cotton 301. The roller brush 302 is made of flexible material and is movably attached to the aluminum wire body 200 below it to ensure that the lubricating oil is evenly coated on the surface of the aluminum wire, effectively reducing friction and improving processing accuracy and chopping blade service life.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, a fixing ring 3011 is fixedly connected above the oil-absorbing cotton 301. The fixing ring 3011 is fixed on the inner wall of the sleeve 303. A fixing bracket 304 is provided below the chopping body 100. The two fixing brackets 304 are located on both sides of the fixing ring 3011. A rotating shaft 305 is movably inserted into the axis of the fixing ring 3011. The roller brush 302 rotates around the rotating shaft 305.

[0033] In this embodiment, a high-precision ceramic fixing ring 3011 is bonded to the top of the oil-absorbing cotton 301. The fixing ring 3011 adopts a split design and forms a rigid connection with the inner wall of the sleeve 303 through laser welding process, thereby improving structural stability.

[0034] Two sets of fixing brackets 304 are symmetrically arranged below the body of the splitting blade 100. The two sets of fixing brackets 304 are located on both sides of the axial direction of the roller brush 302, forming a mechanical limit on the lubrication component 300. A silicon nitride ceramic rotating shaft 305 is movably inserted into the axis of the roller brush 302 through a precision bearing. The surface of the rotating shaft 305 is treated with micro-arc oxidation. When the equipment is running, the rotating shaft 305 is driven by the friction force of the aluminum wire body 200 to generate passive rotation. Using centrifugal force, the lubricating oil absorbed by the oil-absorbing cotton 301 is evenly distributed radially on the surface of the aluminum wire. This can achieve precise quantitative supply of lubricant in the bonding area of ​​the aluminum wire, effectively avoiding the bonding point void defects caused by uneven lubrication in traditional splitting blades.

[0035] like Figure 2 , Figure 4 and Figure 5As shown, limiting discs 306 are fitted on both sides of the rotating shaft 305. The side of the two limiting discs 306 that are close to each other is in contact with the outer walls of both sides of the roller brush 302. An oil guide groove 3021 is opened on the surface of the roller brush 302. The oil guide groove 3021 surrounds the surface of the roller brush 302. Telescopic rods are installed inside the two fixing brackets 304 and are located below the chopping body 100 and can be raised and lowered vertically.

[0036] In this embodiment, stainless steel limiting discs 306 are fitted on both sides of the rotating shaft 305 by set screws. The outer edge is chamfered and forms a precision clearance fit with the two side walls of the roller brush 302. The surface is treated with DLC diamond-like coating, which effectively prevents the axial movement of the rotating shaft 305 while reducing the operating resistance.

[0037] The oil guide grooves 3021 on the surface of the roller brush 302 are distributed in a right-hand spiral shape. With the tangential force generated when the rotating shaft 305 rotates, the lubricating oil can be evenly spread to the surface of the aluminum wire body 200 along the spiral direction. The two sets of fixing frames 304 have telescopic rods integrated inside. The vertical lifting movement is realized through the linear bearing at the bottom of the cleaver body 100, forming a closed-loop control structure to improve the coating uniformity of the aluminum wire body 200.

[0038] It should be noted that a telescopic rod generally consists of an inner rod, an outer rod, and a spring. The inner rod is usually a slender cylindrical rod, mostly made of aluminum alloy or carbon fiber, which is lightweight and has a certain strength. It can be completely retracted into the outer rod. The outer rod is a thicker hollow cylindrical rod with an inner diameter slightly larger than the outer diameter of the inner rod, which can accommodate the free extension and retraction of the inner rod. It is made of the same material as the inner rod or a harder alloy steel. The inner rod is locked inside the outer rod by the elastic force of the spring.

[0039] Working principle: The lubricating oil in the oil storage box 101 is driven by capillary action through the labyrinthine oil circuit and flows directionally to the sleeve 303 interface along the precisely designed tortuous channel. The oil-absorbing cotton 301, made of highly absorbent material, continuously absorbs and stores the lubricating oil, forming a stable oil buffer pool. When the aluminum wire body 200 moves at a preset speed, its surface makes dynamic contact with the flexible material at the lower edge of the roller brush 302, triggering the silicon nitride ceramic rotating shaft 305 to be passively rotated by friction. The ceramic layer formed by the micro-arc oxidation treatment on the surface of the rotating shaft 305 cooperates with the limiting disk 306 to ensure a smooth rotation process.

[0040] The centrifugal force generated by the rotation throws the lubricating oil absorbed by the oil-absorbing cotton 301 radially out along the rotating shaft 305. Combined with the guiding effect of the right-hand spiral oil guide groove 3021 on the surface of the roller brush 302, the oil is evenly spread on the surface of the aluminum wire body 200 in a spiral shape. The semi-circular cross-sectional structure of the oil guide groove 3021 and the groove spacing of about 1.5mm ensure that a uniform oil film of about 0.2μm thickness is formed in a single rotation cycle. The limiting plate 306 prevents the axial movement of the rotating shaft 305 through a precise clearance fit, thereby reducing the lateral friction resistance. The telescopic rods in the two sets of fixing frames 304 achieve vertical lifting and lowering through linear bearings. The self-lubricating structure reduces the surface friction coefficient of the aluminum wire, which is less than that of traditional splitting blades. At the same time, the lubricating oil utilization rate is improved, significantly extending the service life of the splitting blade body 100.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-lubricating aluminum wire splitting knife characterized by, include: The cleaver body (100) has an oil storage box (101) and an oil pipe (102) inside. The oil pipe (102) is located below the oil storage box (101) and is interconnected. An aluminum wire body (200) is movably arranged below the oil pipe (102). A lubrication assembly (300) is provided on the chopping blade body (100) and located above the aluminum wire body (200), the lubrication assembly (300) being located at the bottom port of the oil pipe (102).

2. The self-lubricating aluminum wire cutter according to claim 1, characterized in that, The oil reservoir (101) has a labyrinthine oil passage inside, and the lower interface of the oil reservoir (101) is connected to the lubrication assembly (300).

3. The self-lubricating aluminum wire cutter according to claim 1, characterized in that, The lubrication assembly (300) includes a sleeve (303) fixed inside the cleaver body (100), an oil-absorbing cotton (301) is fixedly inserted inside the sleeve (303), a roller brush (302) is movably connected below the oil-absorbing cotton (301), and the lower part of the roller brush (302) is movably attached to the aluminum wire body (200).

4. The self-lubricating aluminum wire cutter according to claim 3, characterized in that, A fixing ring (3011) is fixedly connected above the oil-absorbing cotton (301), and the fixing ring (3011) is fixed on the inner wall of the sleeve (303).

5. The self-lubricating aluminum wire cutter according to claim 4, characterized in that, A fixing frame (304) is provided below the body of the chopping knife (100). The two fixing frames (304) are located on both sides of the roller brush (302). A rotating shaft (305) is movably inserted into the axis of the roller brush (302), and the roller brush (302) rotates around the rotating shaft (305).

6. The self-lubricating aluminum wire cutter according to claim 5, characterized in that, The two sides of the rotating shaft (305) are fitted with limiting discs (306), and the two limiting discs (306) are close to each other on one side and are in contact with the outer walls of the two sides of the roller brush (302).

7. The self-lubricating aluminum wire cutter according to claim 6, characterized in that, The roller brush (302) has an oil guide groove (3021) on its surface, and the oil guide groove (3021) surrounds the surface of the roller brush (302).

8. The self-lubricating aluminum wire cutter according to claim 5, characterized in that, The two mounting brackets (304) are equipped with telescopic rods inside and are located below the chopping blade body (100) and move vertically.

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