Preparation process of aluminum bonding wire

Abstract

The invention relates to the technical field of aluminum bonding wire preparation, and discloses an aluminum bonding wire preparation process which comprises the following steps: S1, preparing an aluminum wire rod; s2, rough drawing is conducted, specifically, the aluminum wire rod is subjected to wire drawing machining, multi-pass continuous wire drawing treatment is adopted, and the rough drawing speed is controlled to range from 100 m / min to 180 m / min; s3, intermediate annealing is conducted, specifically, the aluminum wire drawn to a certain size is put into an annealing furnace, the annealing temperature is controlled to range from 300 DEG C to 400 DEG C, and the annealing time ranges from 30 min to 60 min; s4, medium drawing is conducted, in the medium drawing process, a high-precision wire drawing die is adopted, and the wire drawing speed is controlled to range from 30 m / min to 80 m / min; s5, aluminum wire cleaning: the aluminum wire is subjected to ultrasonic cleaning to remove greasy substances and other impurities on the surface of the aluminum wire, and the wire cleaning speed is 10-30 m / min; s6, annealing is conducted, specifically, the cleaned aluminum wire is further subjected to annealing treatment, the annealing temperature ranges from 260 DEG C to 420 DEG C, and the annealing time ranges from 20 minutes to 60 minutes; step S7, performance testing; and S8, winding is carried out. The breaking strength of the aluminum bonding wire can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of aluminum bonding wire preparation, and in particular to a preparation process of aluminum bonding wire. BACKGROUND

[0002] At present, in the manufacturing process of semiconductor devices, bonding wires play a crucial role and are used to realize electrical connection between chips and external pins or substrates. Aluminum bonding wires are widely used in the fields of integrated circuits, power devices and the like due to good electrical conductivity, low cost and compatibility with semiconductor materials.

[0003] The existing preparation process of aluminum bonding wire comprises the following steps: step S1: preparing aluminum strip raw material; step S2: rough drawing, performing wire drawing processing on the aluminum coil rod by adopting multi-pass continuous wire drawing processing, and controlling the rough drawing speed to be between 100-180 m / min; step S3: medium drawing, in the medium drawing process, a high-precision wire drawing die is adopted, and the wire drawing speed is controlled to be between 30-80 m / min; step S4: aluminum wire cleaning, the aluminum wire is cleaned by ultrasonic wave to remove grease substances and other impurities on the surface of the aluminum wire, and the wire cleaning speed is 10-30 m / min; step S5: performance test, using a tensile tester to detect the mechanical properties of the aluminum wire after annealing; and step S6: winding, winding the aluminum wire with qualified mechanical properties onto a finished product shaft.

[0004] However, the existing aluminum bonding wire production process has some deficiencies, so that the breaking strength of the aluminum bonding wire is low, which leads to problems such as wire breakage in the bonding process of the aluminum bonding wire in the later period, and affects the performance and reliability of semiconductor devices. SUMMARY

[0005] In order to improve the breaking strength of the aluminum bonding wire, the application provides a preparation process of aluminum bonding wire, which adopts the following technical scheme: A preparation process of aluminum bonding wire, comprising the following steps: Step S1: preparing aluminum coil; Step S2: rough drawing, the aluminum coil is drawn by wire drawing processing, and the rough drawing speed is controlled between 100-180 m / min; Step S3: intermediate annealing, the aluminum wire drawn to a certain size is put into an annealing furnace, the annealing temperature is controlled between 300-400 DEG C, and the annealing time is 30-60 minutes; Step S4: medium drawing, in the medium drawing process, a high-precision wire drawing die is used, and the wire drawing speed is controlled between 30-80 m / min; Step S5: aluminum wire cleaning, the aluminum wire is cleaned by ultrasonic wave to remove grease and other impurities on the surface of the aluminum wire, and the wire cleaning speed is 10-30 m / min; Step S6: annealing, the cleaned aluminum wire is further annealed, the annealing temperature is 260-420 DEG C, and the annealing time is 20-60 minutes; Step S7: performance test, a tensile tester is used to detect the mechanical properties of the annealed aluminum wire; and Step S8: winding, the aluminum wire with qualified mechanical properties is rewound on a finished product shaft.

[0006] By adopting the above technical scheme, the annealed aluminum wire is recrystallized, the internal stress generated in the drawing process of the aluminum wire is eliminated, the crystal defects generated in the drawing process of the aluminum wire are improved, the breaking strength of the aluminum wire is increased, the breaking elongation is increased, and the comprehensive mechanical properties of the aluminum wire are further improved. In addition, the annealed aluminum wire is recrystallized, the crystal defects generated in the drawing process of the aluminum wire are reduced, the crystal structure is improved, and the electrical properties are improved.

[0007] Optionally, in step S5, before the annealing of step S6 is performed, a drying device is used to dry the wet aluminum wire, so as to reduce the influence on the annealing equipment.

[0008] By adopting the above technical scheme, the drying device is arranged, so as to facilitate the drying treatment of the wet aluminum wire, thereby reducing the influence on the annealing equipment.

[0009] Optionally, the drying device comprises a gantry through which the aluminum wire passes, a mounting groove opened at the top of the gantry, a plurality of electric heating wires mounted in the mounting groove, and a fan mounted at the top of the gantry; the air outlet of the fan is communicated with the mounting groove through a pipeline, a plurality of ventilation holes are opened in the groove bottom of the mounting groove, and each ventilation hole is arranged towards the aluminum wire.

[0010] By adopting the above technical scheme, when the aluminum wire needs to be dried, the fan is started first, hot air is formed under the action of the electric heating wire, and then the hot air is blown to the aluminum wire through the ventilation hole, so that the aluminum wire can be dried. In summary, the drying device is arranged to facilitate the drying treatment of the aluminum wire.

[0011] Optionally, a water receiving mechanism is mounted on the gantry, the water receiving mechanism comprises a through hole formed on one side of the gantry, a base mounted on the inner wall of the through hole, a moving base slidably connected to the top of the base, and two groups of driving assemblies mounted on the two sides of the base for driving the moving base to move; a water receiving bucket is mounted on the top of the moving base.

[0012] By adopting the above technical scheme, when it is necessary to receive the water blown down from the aluminum wire, the moving base is first driven by the driving assembly to move downward of the aluminum wire, the moving base moving downward of the aluminum wire drives the water receiving bucket to move downward of the aluminum wire, and then the water blown down from the aluminum wire can be received; in summary, the water receiving mechanism is provided to facilitate the receiving of the water blown down from the aluminum wire.

[0013] Optionally, each group of the driving assembly comprises a driving motor mounted on the end of the base away from the gantry and a lead screw fixedly connected to the output shaft of the driving motor; the two sides of the moving base are fixedly connected with moving plates, and the two moving plates are threadedly connected to the two lead screws, respectively.

[0014] By adopting the above technical scheme, when it is necessary to drive the moving base to move, the driving motor is first started, at this time the output shaft of the driving motor drives the lead screw to rotate, the lead screw rotating drives the moving plate to move, and the moving plate moving can drive the moving base to move; in summary, the driving assembly is provided to facilitate the moving of the moving base.

[0015] Optionally, a water blocking mechanism is mounted on the top of the water receiving bucket, the water blocking mechanism comprises a first horizontal shaft and a second horizontal shaft rotatably connected to the two sides of the top of the water receiving bucket, respectively, and the first horizontal shaft and the second horizontal shaft are fixedly connected with water blocking plates; a transmission assembly for driving the first horizontal shaft and the second horizontal shaft to rotate in opposite directions is mounted on the side wall of the water receiving bucket.

[0016] By adopting the above technical scheme, when it is necessary to receive water, the two water blocking plates are first made to be in an inclined state by the transmission assembly, at this time the water blocking plates play a role of guiding flow; when it is necessary to move the water receiving bucket out of the gantry for cleaning, at this time the two water blocking plates are combined to the top of the water receiving bucket by the transmission assembly, so that the water in the water receiving bucket can be reduced when the water receiving bucket is moving.

[0017] Optionally, the transmission assembly comprises a first guide rod fixed to the side wall of the water receiving bucket, a first sliding sleeve slidably connected to the first guide rod, and a rack fixed to the top of the first sliding sleeve; a spur gear is sleeved on the first horizontal shaft, and the spur gear is engaged with the rack; the inner wall of the portal frame is bolted with a first push rod for driving the rack to move; one end of the first sliding sleeve away from the first push rod is fixed with a first spring, and the end of the first spring away from the first sliding sleeve is fixed to the outer side wall of the water receiving bucket; the transmission assembly further comprises a fixed block fixed to the outer side wall of the water receiving bucket, a second guide rod fixed to one side of the fixed block, and a second sliding sleeve slidably connected to the second guide rod; the side of the first sliding sleeve close to the second sliding sleeve is fixed with a second push rod, the outer side wall of the water receiving bucket is bolted with a connecting lug for the sliding of the second push rod, and the second push rod can drive the second sliding sleeve to move; the second sliding sleeve and the fixed block are fixed with a second spring; the side of the second sliding sleeve away from the second push rod is fixed with a horizontal rod, the horizontal rod is sleeved with a horizontal pipe, and the horizontal pipe is rotatably connected to the outer side wall of the water receiving bucket; the outer side wall of the horizontal rod is sequentially fixed with a plurality of spiral blocks along the circumference thereof, the inner wall of the horizontal pipe is sequentially provided with a plurality of spiral grooves along the circumference thereof, and the spiral blocks and the spiral grooves one-to-one correspond and match; the end of the horizontal pipe away from the second sliding sleeve is fixed with a first bevel gear, the outer side wall of the water receiving bucket is rotatably connected with a vertical shaft, the two ends of the vertical shaft are respectively fixed with a second bevel gear and a third bevel gear, and the first bevel gear is engaged with the second bevel gear; the side wall of the second horizontal shaft is fixed with a fourth bevel gear, and the third bevel gear is engaged with the fourth bevel gear.

[0018] By adopting the above technical scheme, when the water receiving bucket is moved to the position where the first push rod contacts the first sliding sleeve under the action of the moving seat, the water receiving bucket is continuously driven to move, at this time, the first push rod drives the first sliding sleeve to move, the first sliding sleeve drives the first rack to move, the first rack drives the spur gear to rotate, the spur gear drives the first horizontal shaft to rotate, and the first horizontal shaft rotating can make the water baffle thereon be in an inclined state; in addition, the first sliding sleeve moving drives the second push rod to move, the second push rod drives the second sliding sleeve to move, and the second sliding sleeve drives the horizontal rod to move, then the horizontal rod drives the horizontal pipe to rotate under the action of the spiral blocks and the spiral grooves, the horizontal pipe rotating drives the first bevel gear to rotate, the first bevel gear driving the second bevel gear to rotate, the second bevel gear driving the vertical shaft to rotate, the vertical shaft driving the third bevel gear to rotate, the third bevel gear driving the fourth bevel gear to rotate, and the fourth bevel gear driving the second horizontal shaft to rotate, the second horizontal shaft rotating can make the water baffle thereon be in an inclined state; in addition, the first sliding sleeve moving presses the first spring, and the second sliding sleeve moving presses the second spring, when the water receiving bucket makes the first push rod separate from the first sliding sleeve under the action of the moving seat, at this time, the first sliding sleeve resets under the action of the first spring, the second sliding sleeve resets under the action of the second spring, and at this time, the two water baffles will be combined to the top of the water receiving bucket.

[0019] Optionally, a limiting assembly for limiting the first sliding sleeve is mounted on the outer side wall of the water receiving bucket, the limiting assembly comprises a limiting plate bolted to the outer side wall of the water receiving bucket and a limiting rod rotatably connected to the limiting plate at an end away from the water receiving bucket, and the limiting rod can abut against a side of the first sliding sleeve away from the first spring.

[0020] By using the above technical scheme, when the water receiving bucket moves to the outside of the gantry, the water baffle is first manually pushed to be opened and in an inclined state, and then the limiting rod is rotated to limit the side of the first sliding sleeve away from the first spring, so that the operator can clean the inside of the water receiving bucket.

[0021] Optionally, a plug plate is fixedly connected to the bottom of the water receiving bucket, a plug hole for plug connection of the plug plate is formed in the top of the moving seat, a through hole is formed in the inner wall of one side of the plug hole, a fixing assembly for fixing the plug plate is mounted in the through hole, the fixing assembly comprises a vertical block bolted to the inner wall of the through hole, a third guide rod fixedly connected to one side of the vertical block, and a third sliding sleeve slidably connected to the third guide rod, a third spring is fixedly connected between the third sliding sleeve and the vertical block, a fixing plate is fixedly connected to the top of the third sliding sleeve, an inclined surface is arranged on the side of the fixing plate close to the plug plate and abuts against the side wall of the plug plate, and the inclined surface is matched with the side wall of the plug plate, and a separation assembly for separating the limiting plate from the plug plate is mounted on the top of the base.

[0022] By using the above technical scheme, the fixing plate and the third spring are arranged to fix the plug plate, so that the stability of the water receiving bucket can be improved.

[0023] Optionally, the separation assembly comprises a sink groove formed in the top of the base, a damping telescopic rod bolted to the inner wall of the sink groove, a mounting plate mounted at one end of the damping telescopic rod, and an electromagnet mounted on the side of the mounting plate close to the plug plate, a ferromagnetic block is fixedly connected to the side of the fixing plate close to the mounting plate, the electromagnet can attract the ferromagnetic block, a fourth spring is fixedly connected to the side of the mounting plate, and one end of the fourth spring away from the mounting plate is fixedly connected to the side wall of the sink groove.

[0024] By using the above technical scheme, when the moving seat moves to the position where the ferromagnetic block is close to the electromagnet under the action of the lead screw, the electromagnet is started, the electromagnet can then attract the ferromagnetic block, and the ferromagnetic block can drive the fixing plate to move to separate the fixing plate from the plug plate. In summary, the separation assembly is arranged to separate the fixing plate from the plug plate.

[0025] In summary, the present application has at least one of the following beneficial technical effects: The recrystallization of the annealed aluminum eliminates the internal stress of the aluminum wire generated in the drawing process, improves the crystal defects of the aluminum wire generated in the drawing process, thereby increasing the breaking strength of the aluminum wire, increasing the breaking elongation, and further improving the comprehensive mechanical properties of the aluminum wire. In addition, the recrystallization of the annealed aluminum reduces the crystal defects of the aluminum wire generated in the drawing process, improves the crystal structure organization, and improves the electrical properties. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a flow chart of the embodiment of the present application.

[0027] Figure 2 is a structural schematic view of the drying device highlighted in the embodiment of the present application.

[0028] Figure 3 is a structural schematic view of the water blocking mechanism highlighted in the embodiment of the present application.

[0029] Figure 4 is a structural schematic view of the transmission assembly highlighted in the embodiment of the present application.

[0030] Figure 5 is a structural schematic view of the connection of the horizontal rod and the horizontal pipe highlighted in the embodiment of the present application.

[0031] Figure 6 is a structural schematic view of the fixing assembly highlighted in the embodiment of the present application.

[0032] Figure 7 is a structural schematic view of the separation assembly highlighted in the embodiment of the present application.

[0033] Fig. 1 is an aluminum wire; 2 is a drying device; 21 is a gantry; 211 is a mounting groove; 212 is a ventilation hole; 22 is an electric heating wire; 23 is a fan; 3 is a water receiving mechanism; 31 is a base; 32 is a moving seat; 321 is a jack; 322 is a through hole; 33 is a water receiving bucket; 331 is a plugboard; 34 is a driving motor; 35 is a lead screw; 36 is a moving plate; 4 is a water blocking mechanism; 41 is a first horizontal shaft; 42 is a second horizontal shaft; 43 is a water blocking plate; 5 is a transmission assembly; 51 is a first guide rod; 511 is a first sliding sleeve; 512 is a rack; 513 is a second push rod; 514 is a first spring; 52 is a spur gear; 53 is a first push rod; 54 is a fixed block; 541 is a second guide rod; 542 is a second sliding sleeve; 543 is a second spring; 55 is a connecting lug; 56 is a horizontal rod; 561 is a spiral block; 57 is a horizontal pipe; 571 is a spiral groove; 572 is a first bevel gear; 58 is a vertical shaft; 581 is a second bevel gear; 582 is a third bevel gear; 59 is a fourth bevel gear; 6 is a limiting assembly; 61 is a limiting plate; 62 is a short shaft; 63 is a limiting rod; 7 is a fixing assembly; 71 is a vertical block; 72 is a third guide rod; 73 is a third sliding sleeve; 74 is a third spring; 75 is a fixed plate; 751 is an inclined surface; 8 is a separation assembly; 81 is a sink groove; 82 is a damping telescopic rod; 83 is a mounting plate; 84 is an electromagnet; 85 is a ferromagnetic block; 86 is a fourth spring. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings.

[0035] In the description of the present specification, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the described embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Also, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The embodiment of the present application discloses a preparation process of an aluminum bonding wire, referring to Figure 1, comprising the following steps: step S1: preparing aluminum rod; step S2: rough drawing, the aluminum rod is drawn by wire drawing processing, and the rough drawing speed is controlled between 100-180 m / min; step S3: intermediate annealing, the aluminum wire 1 drawn to a certain size is put into an annealing furnace, the annealing temperature is controlled between 300-400 DEG C, and the annealing time is 30-60 minutes; step S4: medium drawing, in the medium drawing process, a high-precision wire drawing die is used, and the drawing speed is controlled between 30-80 m / min; step S5: cleaning the aluminum wire 1, the aluminum wire 1 is cleaned by ultrasonic wave to remove grease and other impurities on the surface of the aluminum wire 1, and the wire cleaning speed is 10-30 m / min; step S6: annealing, the cleaned aluminum wire 1 is further annealed at 260-420 DEG C for 20-60 minutes; step S7: performance test, using a tensile tester to test the mechanical properties of the annealed aluminum wire 1; step S8: winding, the aluminum wire 1 with qualified mechanical properties is rewound on a finished product shaft.

[0037] The annealing treatment of aluminum causes recrystallization, eliminates the internal stress of the aluminum wire generated in the drawing process, improves the crystal defects of the aluminum wire generated in the drawing process, thereby increasing the breaking strength and elongation of the aluminum wire, and further improving the comprehensive mechanical properties of the aluminum wire. In addition, the annealing treatment of aluminum causes recrystallization, reduces the crystal defects of the aluminum wire generated in the drawing process, improves the crystal structure of the aluminum wire, and improves the electrical properties.

[0038] In step S5, referring to Figure 2 Before performing the annealing of step S6, the damp aluminum wire 1 is subjected to drying treatment by the drying device 2, so as to reduce the influence on the annealing equipment. The drying device 2 is arranged to facilitate the drying treatment of the damp aluminum wire 1, thereby reducing the influence on the annealing equipment.

[0039] Referring to Figure 2 The drying device 2 comprises a gantry 21 vertically arranged for the aluminum wire 1 to pass through, a mounting groove 211 opened at the top of the gantry 21, a plurality of electric heating wires 22 horizontally mounted in the mounting groove 211, and a fan 23 mounted at the top of the gantry 21; the outlet of the fan 23 is communicated with the mounting groove 211 through a pipeline, and a plurality of ventilation holes 212 are opened at the bottom of the mounting groove 211, each ventilation hole 212 is arranged towards the aluminum wire. When it is needed to dry the aluminum wire 1, the fan 23 is started first, at this time hot air can be formed under the action of the electric heating wire 22, and then the hot air is blown to the aluminum wire 1 through the ventilation hole 212, so as to dry the aluminum wire 1; in summary, the drying device 2 is arranged to facilitate the drying treatment of the aluminum wire 1.

[0040] Referring to Figure 2The water receiving mechanism 3 is arranged on the gantry 21, and the water receiving mechanism 3 comprises a through hole (not shown in the figure) arranged on one side of the gantry 21, a base 31 horizontally arranged on the inner wall of the through hole, a moving base 32 slidably connected to the top of the base 31 along the length direction of the base 31, and two groups of driving assemblies respectively arranged on the two sides of the base 31 and used for driving the moving base 32 to move. A water receiving bucket 33 is arranged on the top of the moving base 32. When it is needed to receive the water blown down from the aluminum wire 1, the moving base 32 is first driven by the driving assemblies to move downwards to the aluminum wire 1, the moving base 32 moves downwards to the aluminum wire 1 to drive the water receiving bucket 33 to move downwards to the aluminum wire 1, and then the water blown down from the aluminum wire 1 can be received. In summary, the water receiving mechanism 3 is arranged to facilitate the receiving of the water blown down from the aluminum wire 1.

[0041] With reference to Figure 2 Each group of driving assemblies comprises a driving motor 34 horizontally arranged on the end of the base 31 away from the gantry 21 and a lead screw 35 horizontally fixedly connected to the output shaft of the driving motor 34. The lead screw 35 is rotationally connected to the side wall of the base 31, and the two sides of the moving base 32 are fixedly connected with moving plates 36 respectively. The two moving plates 36 are threadedly connected with the two lead screws 35 respectively. The two driving motors 34 are synchronously controlled by a controller. When it is needed to drive the moving base 32 to move, the driving motor 34 is first started, at this time, the output shaft of the driving motor 34 drives the lead screw 35 to rotate, the lead screw 35 drives the moving plates 36 to move by rotating, and the moving plates 36 drive the moving base 32 to move by moving. In summary, the driving assemblies are arranged to facilitate the movement of the moving base 32.

[0042] With reference to Figure 2 and Figure 3 A water blocking mechanism 4 is arranged on the top of the water receiving bucket 33, and the water blocking mechanism 4 comprises a first horizontal shaft 41 and a second horizontal shaft 42 which are rotationally connected to the two sides of the top of the water receiving bucket 33 by bearings respectively, and the first horizontal shaft 41 and the second horizontal shaft 42 are fixedly connected with water blocking plates 43 respectively. A transmission assembly 5 is arranged on the side wall of the water receiving bucket 33 and used for driving the first horizontal shaft 41 and the second horizontal shaft 42 to rotate in opposite directions. When it is needed to receive water, the two water blocking plates 43 are first made to be in an inclined state by the transmission assembly 5, at this time, the water blocking plates 43 play a role of guiding flow. When it is needed to move the water receiving bucket 33 out of the gantry 21 to clean, the two water blocking plates 43 are combined on the top of the water receiving bucket 33 by the transmission assembly 5 at this time, so that the water in the water receiving bucket 33 can be reduced to overflow when the water receiving bucket 33 moves.

[0043] With reference to Figure 2 , Figure 4 and Figure 5The transmission assembly 5 comprises a first guide rod 51 fixed to the side wall of the water collecting bucket 33, a first sliding sleeve 511 slidably connected to the first guide rod 51 in the length direction of the water collecting bucket 33, and a rack 512 fixed to the top of the first sliding sleeve 511; a spur gear 52 is fixedly sleeved on the first horizontal shaft 41 and engaged with the rack 512; the inner wall of the gantry 21 is provided with a first push rod 53 for driving the rack 512 to move; one end of the first sliding sleeve 511 away from the first push rod 53 is fixedly connected with a first spring 514, and one end of the first spring 514 away from the first sliding sleeve 511 is fixed to the outer side wall of the water collecting bucket 33; the transmission assembly 5 further comprises a fixed block 54 fixed to the outer side wall of the water collecting bucket 33, a second guide rod 541 fixedly connected to one side of the fixed block 54, and a second sliding sleeve 542 slidably connected to the second guide rod 541 in the length direction of the water collecting bucket 33; the side of the first sliding sleeve 511 close to the second sliding sleeve 542 is fixedly connected with a second push rod 513, and the outer side wall of the water collecting bucket 33 is provided with a plurality of connecting ears 55 for sliding of the second push rod 513, the connecting ears 55 can guide the second push rod 513, and the second push rod 513 can drive the second sliding sleeve 542 to move; a second spring 543 is fixedly connected horizontally between the second sliding sleeve 542 and the fixed block 54; the side of the second sliding sleeve 542 away from the second push rod 513 is fixedly connected with a horizontal rod 56, the horizontal rod 56 is sleeved with a horizontal pipe 57, and the horizontal pipe 57 is connected to the outer side wall of the water collecting bucket 33 through a bearing to rotate horizontally; a plurality of spiral blocks 561 are fixedly connected to the outer side wall of the horizontal rod 56 in the circumferential direction, a plurality of spiral grooves 571 are arranged on the inner wall of the horizontal pipe 57 in the circumferential direction, and the spiral blocks 561 and the spiral grooves 571 correspond to and match each other; one end of the horizontal pipe 57 away from the second sliding sleeve 542 is fixedly connected with a first bevel gear 572, the outer side wall of the water collecting bucket 33 is connected with a vertical shaft 58 through a bearing to rotate vertically, the two ends of the vertical shaft 58 are respectively fixedly connected with a second bevel gear 581 and a third bevel gear 582, and the first bevel gear 572 is engaged with the second bevel gear 581; a fourth bevel gear 59 is fixedly connected to the side wall of the second horizontal shaft 42, and the third bevel gear 582 is engaged with the fourth bevel gear 59.When the water receiving bucket 33 is moved to make the first push rod 53 contact with the first sliding sleeve 511 under the action of the moving seat 32, then continue to drive the water receiving bucket 33 to move, at this time the first push rod 53 pushes the first sliding sleeve 511 to move, the first sliding sleeve 511 moves to drive the first rack 512 to move, the first rack 512 moves to drive the spur gear 52 to rotate, the spur gear 52 rotates to drive the first horizontal shaft 41 to rotate, the first horizontal shaft 41 rotates to make the water baffle 43 on it in an inclined state; in addition, the first sliding sleeve 511 moves to drive the second push rod 513 to move, the second push rod 513 moves to drive the second sliding sleeve 542 to move, the second sliding sleeve 542 moves to drive the horizontal rod 56 to move, then the horizontal rod 56 drives the horizontal pipe 57 to rotate under the action of the helical block 561 and the helical groove 571, the horizontal pipe 57 rotates to drive the first bevel gear 572 to rotate, the first bevel gear 572 rotates to drive the second bevel gear 581 to rotate, the second bevel gear 581 rotates to drive the vertical shaft 58 to rotate, the vertical shaft 58 rotates to drive the third bevel gear 582 to rotate, the third bevel gear 582 rotates to drive the fourth bevel gear 59 to rotate, the fourth bevel gear 59 rotates to drive the second horizontal shaft 42 to rotate, the second horizontal shaft 42 rotates to make the water baffle 43 on it in an inclined state; in addition, the first sliding sleeve 511 moves to press against the first spring 514, the second sliding sleeve 542 moves to press against the second spring 543, when the water receiving bucket 33 is separated from the first sliding sleeve 511 under the action of the moving seat 32, at this time the first sliding sleeve 511 is reset under the action of the first spring 514, the second sliding sleeve 542 is reset under the action of the second spring 543, at this time the two water baffles 43 are combined to the top of the water receiving bucket 33.

[0044] With reference to Figure 3 and Figure 4 The outer side wall of the water receiving bucket 33 is provided with a limiting assembly 6 for limiting the first sliding sleeve 511, the limiting assembly 6 comprises a limiting plate 61 bolted to the outer side wall of the water receiving bucket 33 and a limiting rod 63 rotatably connected to the end of the limiting plate 61 away from the water receiving bucket 33 through a short shaft 62; the limiting rod 63 can abut against the side of the first sliding sleeve 511 away from the first spring 514. When the water receiving bucket 33 is moved to the outside of the portal frame 21, at this time the first sliding sleeve 511 is manually pushed to make the water baffle 43 open to an inclined state, then the side of the first sliding sleeve 511 away from the first spring 514 is limited by rotating the limiting rod 63, so as to facilitate the operator to clean the inside of the water receiving bucket 33.

[0045] With reference to Figure 6 and Figure 7The bottom of the water receiving bucket 33 is fixedly connected with an insertion plate 331, the top of the moving seat 32 is provided with an insertion hole 321 for inserting the insertion plate 331, one side inner wall of the insertion hole 321 is provided with a through hole 322, the through hole 322 is installed with a fixing assembly 7 for fixing the insertion plate 331, the fixing assembly 7 comprises a vertical block 71 which is bolted to the inner wall of the through hole 322, a third guide rod 72 which is horizontally fixed to one side of the vertical block 71, and a third sliding sleeve 73 which is slidingly connected to the third guide rod 72 along the length direction of the moving seat 32; the third sliding sleeve 73 and the vertical block 71 are horizontally fixed with a third spring 74; the top of the third sliding sleeve 73 is fixedly connected with a fixed plate 75, one side of the fixed plate 75 close to the insertion plate 331 is provided with an inclined surface 751 and abuts against the side wall of the insertion plate 331, the inclined surface 751 is matched with the side wall of the insertion plate 331; the top of the base 31 is installed with a separation assembly 8 for separating the limiting plate 61 from the insertion plate 331. The fixed plate 75 and the third spring 74 are arranged to facilitate the fixation of the insertion plate 331, thereby improving the stability of the water receiving bucket 33.

[0046] With reference to Figure 6 and Figure 7 The separation assembly 8 comprises a sink 81 provided on the top of the base 31, a damping telescopic rod 82 which is horizontally bolted to the inner wall of the sink 81, a mounting plate 83 which is installed on one end of the damping telescopic rod 82, and an electromagnet 84 which is installed on one side of the mounting plate 83 close to the insertion plate 331, the damping telescopic rod 82 generally comprises a sleeve and a telescopic rod which is dampingly slidingly connected in the sleeve, and it can be understood that the friction between the telescopic rod and the inner wall of the sleeve is relatively large, one side of the fixed plate 75 close to the mounting plate 83 is fixedly connected with a ferromagnetic block 85, the electromagnet 84 can attract the ferromagnetic block 85, one side of the mounting plate 83 is fixedly connected with a fourth spring 86, one end of the fourth spring 86 away from the mounting plate 83 is fixedly connected to the side wall of the sink 81. When the moving seat 32 is moved under the action of the lead screw 35 to make the ferromagnetic block 85 close to the electromagnet, the electromagnet 84 is started at this time, then the electromagnet 84 can attract the ferromagnetic block 85, and then the ferromagnetic block 85 can drive the fixed plate 75 to move to separate the fixed plate 75 from the insertion plate 331; in summary, the separation assembly 8 is arranged to facilitate the separation of the fixed plate 75 from the insertion plate 331.

[0047] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A process for the production of aluminum bonding wires, characterized in that, The method comprises the following steps: Step S1: preparing aluminum rod; Step S2: rough drawing, the aluminum rod is drawn by wire drawing processing, and the rough drawing speed is controlled between 100-180 m / min; Step S3: intermediate annealing, the aluminum wire (1) drawn to a certain size is placed in an annealing furnace, the annealing temperature is controlled between 300-400℃, and the annealing time is 30-60 minutes; Step S4: intermediate drawing, a high-precision wire drawing die is used in the intermediate drawing process, and the drawing speed is controlled between 30-80 m / min; Step S5: cleaning the aluminum wire (1), the aluminum wire (1) is cleaned by ultrasonic wave to remove oiliness and other impurities on the surface of the aluminum wire (1), and the wire cleaning speed is 10-30 m / min; Step S6: annealing, the cleaned aluminum wire (1) is further annealed at 260-420℃ for 20-60 minutes; Step S7: performance test, the mechanical properties of the annealed aluminum wire (1) are tested by a tensile tester; Step S8: winding, the aluminum wire (1) with qualified mechanical properties is rewound on a finished product shaft.

2. The process for preparing an aluminum bonding wire according to claim 1, wherein In step S5, before the annealing of step S6 is performed, the damp aluminum wire (1) is dried by a drying device (2) to reduce the influence on the annealing equipment.

3. The process for producing an aluminum bonding wire according to claim 2, wherein The drying device (2) comprises a portal frame (21) through which the aluminum wire (1) passes, a mounting groove (211) opened at the top of the portal frame (21), a plurality of electric heating wires (22) mounted in the mounting groove (211), and a fan (23) mounted at the top of the portal frame (21); the air outlet of the fan (23) is communicated with the mounting groove (211) through a pipeline, and a plurality of ventilation holes (212) are opened in the groove bottom of the mounting groove (211), and each ventilation hole (212) is arranged towards the aluminum wire.

4. The process for producing an aluminum bonding wire according to claim 3, wherein A water collecting mechanism (3) is mounted on the portal frame (21), and the water collecting mechanism (3) comprises a through hole opened on one side of the portal frame (21), a base (31) mounted on the inner wall of the through hole, a moving seat (32) slidably connected to the top of the base (31), and two groups of driving assemblies mounted on both sides of the base (31) for driving the moving seat (32) to move; a water collecting bucket (33) is mounted on the top of the moving seat (32).

5. The process for preparing an aluminum bonding wire according to claim 4, wherein Each group of driving assemblies comprises a driving motor (34) mounted on the end of the base (31) away from the portal frame (21) and a lead screw (35) fixedly connected to the output shaft of the driving motor (34); two moving plates (36) are fixedly connected to the two sides of the moving seat (32), and the two moving plates (36) are threadedly connected to the two lead screws (35).

6. The process for preparing an aluminum bonding wire according to claim 4, wherein The top of the water collecting bucket (33) is provided with a water blocking mechanism (4), which comprises a first horizontal shaft (41) and a second horizontal shaft (42) rotatably connected to the two sides of the top of the water collecting bucket (33), and a water blocking plate (43) is fixedly connected to each of the first horizontal shaft (41) and the second horizontal shaft (42); the side wall of the water collecting bucket (33) is provided with a transmission assembly (5) for driving the first horizontal shaft (41) and the second horizontal shaft (42) to rotate in opposite directions.

7. The process for producing an aluminum bonding wire according to claim 6, wherein The transmission assembly (5) comprises a first guide rod (51) fixedly connected to the side wall of the water collecting bucket (33), a first sliding sleeve (511) slidably connected to the first guide rod (51), and a rack (512) fixedly connected to the top of the first sliding sleeve (511); a spur gear (52) is sleeved and fixed on the first horizontal shaft (41) and engaged with the rack (512); the inner wall of the gantry (21) is bolted with a first push rod (53) for driving the rack (512) to move; one end of the first sliding sleeve (511) away from the first push rod (53) is fixedly connected with a first spring (514), and one end of the first spring (514) away from the first sliding sleeve (511) is fixedly connected to the outer side wall of the water collecting bucket (33); the transmission assembly (5) further comprises a fixed block (54) fixedly connected to the outer side wall of the water collecting bucket (33), a second guide rod (541) fixedly connected to one side of the fixed block (54), and a second sliding sleeve (542) slidably connected to the second guide rod (541); one side of the first sliding sleeve (511) close to the second sliding sleeve (542) is fixedly connected with a second push rod (513), and the outer side wall of the water collecting bucket (33) is bolted with a connecting lug (55) for sliding of the second push rod (513), and the second push rod (513) can push the second sliding sleeve (542) to move; a second spring (543) is fixedly connected between the second sliding sleeve (542) and the fixed block (54); one side of the second sliding sleeve (542) away from the second push rod (513) is fixedly connected with a horizontal rod (56), and a horizontal pipe (57) is sleeved on the horizontal rod (56) and rotatably connected to the outer side wall of the water collecting bucket (33); a plurality of spiral blocks (561) are sequentially fixedly connected to the outer side wall of the horizontal rod (56) in the circumferential direction, a plurality of spiral grooves (571) are sequentially arranged on the inner wall of the horizontal pipe (57) in the circumferential direction, and the spiral blocks (561) and the spiral grooves (571) correspond to each other and match each other; one end of the horizontal pipe (57) away from the second sliding sleeve (542) is fixedly connected with a first bevel gear (572), the outer side wall of the water collecting bucket (33) is rotatably connected with a vertical shaft (58), and the two ends of the vertical shaft (58) are respectively fixedly connected with a second bevel gear (581) and a third bevel gear (582), the first bevel gear (572) is engaged with the second bevel gear (581); the side wall of the second horizontal shaft (42) is fixedly connected with a fourth bevel gear (59), and the third bevel gear (582) is engaged with the fourth bevel gear (59).

8. The process for producing an aluminum bonding wire according to claim 7, wherein The outer side wall of the water collecting bucket (33) is provided with a limiting assembly (6) for limiting the first sliding sleeve (511), the limiting assembly (6) comprises a limiting plate (61) bolted to the outer side wall of the water collecting bucket (33) and a limiting rod (63) rotatably connected to the end of the limiting plate (61) away from the water collecting bucket (33); the limiting rod (63) can abut against the side of the first sliding sleeve (511) away from the first spring (514).

9. The process for preparing an aluminum bonding wire according to claim 5, wherein The bottom of the water collecting bucket (33) is fixedly connected with a plug plate (331), the top of the moving seat (32) is provided with a plug hole (321) for plug connection of the plug plate (331), one side inner wall of the plug hole (321) is provided with a through hole (322), the through hole (322) is provided with a fixing assembly (7) for fixing the plug plate (331), the fixing assembly (7) comprises a vertical block (71) bolted to the inner wall of the through hole (322), a third guide rod (72) fixedly connected to one side of the vertical block (71) and a third sliding sleeve (73) slidably connected to the third guide rod (72); the third sliding sleeve (73) and the vertical block (71) are fixedly connected with a third spring (74); the top of the third sliding sleeve (73) is fixedly connected with a fixing plate (75), one side of the fixing plate (75) close to the plug plate (331) is provided with an inclined surface (751) and abuts against the side wall of the plug plate (331), the inclined surface (751) is matched with the side wall of the plug plate (331); the top of the base (31) is provided with a separating assembly (8) for separating the limiting plate (61) from the plug plate (331).

10. The process for preparing an aluminum bonding wire according to claim 9, wherein The separating assembly (8) comprises a sink (81) provided in the top of the base (31), a damping telescopic rod (82) bolted to the inner wall of the sink (81), a mounting plate (83) mounted on one end of the damping telescopic rod (82) and an electromagnet (84) mounted on one side of the mounting plate (83) close to the plug plate (331), one side of the fixing plate (75) close to the mounting plate (83) is fixedly connected with a ferromagnetic block (85), the electromagnet (84) can attract the ferromagnetic block (85), one side of the mounting plate (83) is fixedly connected with a fourth spring (86), one end of the fourth spring (86) away from the mounting plate (83) is fixedly connected to the side wall of the sink (81).

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