A method for preparing oxidation-resistant bonded copper wire

Abstract

The application discloses a preparation method of oxidation-resistant bonded copper wires and relates to the technical field of bonded copper wires.The preparation method of the oxidation-resistant bonded copper wires is realized by an oxidation-resistant bonded copper wire preparation device.The oxidation-resistant bonded copper wire preparation device comprises a shell, a first driving mechanism is arranged on the top of the inner side of the shell, a ball milling mechanism and a material guiding mechanism are sequentially arranged on the outer side of the first driving mechanism from top to bottom, a second driving mechanism and a blank forming mechanism are arranged on the bottom of the inner side of the shell, and the blank forming mechanism is located on the right side of the second driving mechanism.The application has high automation degree, does not need manual transfer and addition of mixed powder, saves labor, avoids loss of the mixed powder in the transfer process, can conveniently output the blank formed by pressing, and is more suitable for industrialized production of the oxidation-resistant bonded copper wires.

Description

Technical Field

[0001] This invention relates to the field of bonding copper wire technology, and in particular to a method for preparing oxidation-resistant bonding copper wire. Background Technology

[0002] Copper bonding wire, as the main connection material between semiconductor device chips and external circuits, is an internal lead material with excellent electrical, thermal, mechanical properties and excellent chemical stability. It is also low in cost, has high mechanical properties, is suitable for small wire diameters and spacings, and has good mechanical properties, electrical properties, and secondary solder joint stability. It has been widely used to replace bonding alloy wire in the microelectronics industry.

[0003] The invention patent with authorization announcement number CN 107723488 B discloses a method for preparing an oxidation-resistant bonding copper wire material. The method uses copper powder, tin powder, silicon powder and molybdenum powder as the main materials. After blending and sintering, a modified powder is formed. Since the molybdenum powder matrix melts and reacts with the silicon powder to undergo silicification, a MoSi2 layer is uniformly coated on the surface of the copper rod during the preparation of the copper rod by melting single crystal copper. A dense protective layer is formed on the surface of the copper rod, which restricts the inward diffusion reaction of oxygen on the surface during the preparation of the bonding wire, improves the oxidation resistance of the material, and thus effectively improves the performance of the bonding wire material.

[0004] This invention adds Sn to the inside of a single-crystal copper rod. The Sn dissolved in the copper causes distortion in the high-purity copper lattice, increasing the difficulty of nucleation by dislocation rearrangement during the recrystallization of single-crystal copper. Therefore, the metal can only recrystallize at a higher temperature, thereby effectively increasing the difficulty of oxidation and improving the oxidation resistance of the material.

[0005] In the process of making the blank using the above method, technicians first need to mix copper powder, tin powder, silicon powder and molybdenum powder, then ball mill the mixed powder, then add the ball-milled mixed powder to the mold for pressing and shaping, and finally demold to obtain the blank.

[0006] However, after practical application by those skilled in the art, the above preparation method still has some drawbacks. The most obvious one is that the above billet preparation process has a low degree of automation. When the ball-milled powder is added into the mold, the existing technology mostly uses manual transfer to add the mixed powder, which is inconvenient and easy to cause powder loss. At the same time, the subsequent demolding operation is cumbersome, which wastes manpower and has a significant impact on the billet preparation efficiency.

[0007] Therefore, it is necessary to invent a method for preparing oxidation-resistant bonded copper wire to solve the above problems. Summary of the Invention

[0008] The purpose of this invention is to provide a method for preparing oxidation-resistant bonded copper wire to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing oxidation-resistant bonded copper wire, wherein the method for preparing oxidation-resistant bonded copper wire is implemented by an oxidation-resistant bonded copper wire preparation device, the oxidation-resistant bonded copper wire preparation device includes a housing, a first driving mechanism is provided at the top of the inner side of the housing, a ball milling mechanism and a material guiding mechanism are arranged sequentially from top to bottom on the outer side of the first driving mechanism, a second driving mechanism and a blank forming mechanism are provided at the bottom of the inner side of the housing, and the blank forming mechanism is located to the right of the second driving mechanism;

[0010] The first drive mechanism includes a reciprocating screw, a drive motor, a drive bevel gear, a synchronizing sleeve, a lifting plate, a guide rod, a first spring, an upper clasp, and a sliding square shaft;

[0011] The reciprocating screw passes through the outer shell and is rotatably connected to the outer shell via a bearing. The drive motor is fixedly mounted on the top of the outer shell and is drive-connected to the reciprocating screw. The active bevel gear is fixedly sleeved on the top outer side of the reciprocating screw. The synchronous sleeve is slidably nested on the bottom outer side of the reciprocating screw in the vertical direction. The lifting plate is drive-sleeved on the outside of the reciprocating screw and rotatably sleeved on the top outer side of the synchronous sleeve via a bearing. The guide rod slides through the guide hopper and is fixedly connected to the lifting plate. The first spring is fixedly connected to the bottom of the synchronous sleeve. The upper clamp is fixedly connected to the bottom end of the first spring. The sliding square shaft slides through the bottom of the synchronous sleeve and is fixedly connected to the upper clamp.

[0012] The ball mill mechanism includes an inner sieve cylinder, an outer sieve cylinder, a fixed block, a rotating shaft, a driven bevel gear, and a connecting rod;

[0013] The inner screen cylinder is rotatably sleeved on the outside of the reciprocating screw via a bearing, and the outer screen cylinder is rotatably mounted on the side of the inner screen cylinder via a bearing. The inner and outer screen cylinders are filled with grinding steel balls. The fixed block is rotatably mounted on the end of the outer screen cylinder via a bearing and is fixedly connected to the inner wall of the outer shell. The rotating shaft is rotatably nested on the center of the inner side of the fixed block via a bearing. The driven bevel gear is fixedly mounted on the end of the rotating shaft and meshes with the driving bevel gear. The connecting rod is fixedly connected between the rotating shaft and the inner wall of the outer screen cylinder.

[0014] Preferably, the material guiding mechanism includes a material guide hopper, a C-shaped baffle, and a forming back plate.

[0015] Preferably, the guide hopper is slidably sleeved on the outside of the reciprocating screw and fixedly disposed in the middle of the inner cavity of the outer shell, the C-shaped baffle is fixedly nested on the bottom right side of the guide hopper and fits against the inner wall of the outer shell, and two forming back plates are provided, the two forming back plates being fixedly disposed on the front and rear sides of the C-shaped baffle respectively.

[0016] Preferably, the second drive mechanism includes a driven shaft, a lower chuck, an eccentric wheel, and an annular magnet.

[0017] Preferably, the driven shaft is rotatably nested at the bottom of the inner cavity of the housing via a bearing, the lower retainer is fixedly disposed at the top of the driven shaft, the eccentric wheel is fixedly sleeved on the outside of the driven shaft, and the annular magnet is fixedly sleeved on the outside of the eccentric wheel.

[0018] Preferably, the blank forming mechanism includes a first forming plate, a second spring, a fixing plate, a second forming plate, a third forming plate, a third spring, an L-shaped magnet, and an inverted U-shaped cover.

[0019] Preferably, the first molding plate is slidably nested at the bottom right side of the outer shell, the second spring is fixedly disposed between the first molding plate and the fixed plate, the fixed plate is fixedly connected to the inner wall of the outer shell, the second molding plate is slidably disposed at the top of the first molding plate and magnetically connected to the annular magnet, the third molding plate is slidably disposed at the top of the second molding plate, the third spring is fixedly connected between the second molding plate and the third molding plate, the L-shaped magnet is fixedly disposed at the bottom right side of the outer shell, the inverted U-shaped cover is slidably sleeved on the outside of the L-shaped magnet in the vertical direction and slidably nested at the bottom right side of the outer shell, and a handle is fixedly disposed at the top of the inverted U-shaped cover.

[0020] Preferably, the method specifically includes the following steps:

[0021] S1. Copper powder, tin powder, silicon powder and molybdenum powder are added into the ball mill mechanism through the feed port on the top left side of the shell. Then the drive motor is started. After the drive motor starts, it drives the reciprocating screw to rotate continuously. When the reciprocating screw rotates, it drives the active bevel gear to rotate. When the active bevel gear rotates, it drives the rotating shaft to rotate through the driven bevel gear. In turn, the rotating shaft drives the outer screen cylinder to rotate continuously through the connecting rod.

[0022] S2. During the rotation of the outer screen cylinder, copper powder, tin powder, silicon powder and molybdenum powder are mixed inside the inner and outer screen cylinders. At the same time, the grinding steel balls of the inner and outer screen cylinders continuously grind the mixed powder. The ground mixed powder passes through the inner and outer screen cylinders and falls into the top of the guide hopper. Then it slides down the inclined surface of the top of the guide hopper to the inside of the C-shaped baffle, and finally falls into the inside of the molding cavity formed by the two molding back plates, the first molding plate, the second molding plate and the third molding plate.

[0023] S3. When the reciprocating screw rotates, it drives the lifting plate to continuously descend, and at the same time drives the synchronous sleeve to rotate synchronously. When the lifting plate descends, it pushes the synchronous sleeve downward continuously. When the synchronous sleeve rotates, it drives the upper clamp to rotate synchronously through the sliding square shaft. When the descending distance of the lifting plate reaches the first threshold, the upper clamp and the lower clamp engage. At this time, the upper clamp drives the driven shaft to rotate through the lower clamp. In addition, due to the obstruction of the lower clamp, when the synchronous sleeve continues to descend, the upper clamp no longer descends and the first spring is continuously compressed.

[0024] S4. When the driven shaft rotates, it drives the eccentric wheel to rotate. When the eccentric wheel rotates, it pushes the second forming plate through the ring magnet. After the second forming plate is pushed, it drives the third forming plate to move to the right synchronously on the top of the first forming plate, thereby pressing the mixed powder. When the lifting plate descends to the second threshold, the right end of the third forming plate is in contact with the first forming plate. At this time, as the second forming plate continues to move to the right, the third forming plate no longer moves to the right and the third spring is continuously stretched.

[0025] S5. When the lifting plate descends to the third threshold, the blank pressing is completed. At this time, the second forming plate pushes the first forming plate through the blank, thereby stretching the second spring and moving the blank to the right. When the lifting plate descends to the fourth threshold, the first forming plate and the L-shaped magnet come into contact and are attracted by the L-shaped magnet.

[0026] S6. As the lifting plate continues to descend, the eccentric wheel begins to reset. During the eccentric wheel reset process, the ring magnet drives the second forming plate to reset, so that the second forming plate no longer presses the blank. At this time, the inverted U-shaped cover is lifted upward by the handle, and then the blank located on the top of the first forming plate is pushed forward or backward to remove the blank.

[0027] S7. When the lifting plate descends to the fifth threshold, the left side of the second forming plate is released from the left inner side of the first forming plate. Subsequently, as the second forming plate continues to move to the left, the second forming plate pushes the first forming plate to detach from the L-shaped magnet. After the first forming plate detaches, it quickly resets under the pull of the second spring.

[0028] S8. When the lifting plate descends to the sixth threshold, the lifting plate moves to the lowest end of the reciprocating thread on the outside of the reciprocating screw. Subsequently, as the reciprocating screw continues to rotate, the lifting plate moves up to reset. After the lifting plate moves up to the seventh threshold, the lifting plate moves to the highest end of the reciprocating thread on the outside of the reciprocating screw, i.e., the initial position. At this time, the drive motor is stopped.

[0029] S9. The billet is calcined, and the calcined product is cooled to room temperature and then crushed to obtain modified powder. The modified powder is mixed with electrolytic copper powder and placed in a vacuum melting furnace for heating. After melting, the copper tube for ingot drawing is placed in the ingot clamping device under an argon atmosphere. Cooling water is circulated and the traction mechanism is started to prepare modified single crystal copper rod. The modified single crystal copper rod is drawn into wire to obtain oxidation-resistant bonded copper wire semi-finished product. After annealing the oxidation-resistant bonded copper wire semi-finished product, the oxidation-resistant bonded copper wire finished product is obtained.

[0030] The technical effects and advantages of this invention are as follows:

[0031] This invention comprises a first driving mechanism, a ball milling mechanism, a material guiding mechanism, a second driving mechanism, and a blank forming mechanism. The first driving mechanism drives the ball milling mechanism to grind the mixed powder. The material guiding mechanism then guides the mixed powder into a chamber formed by the material guiding mechanism and the blank forming mechanism, where it awaits pressing. Furthermore, as the driving time of the ball milling mechanism increases, the first driving mechanism begins to drive the second driving mechanism, which in turn pushes the blank forming mechanism to complete the blank pressing and convenient output. Compared to similar devices and methods in the prior art, this invention has a high degree of automation, eliminating the need for manual transfer and addition of the mixed powder, saving manpower and preventing powder loss during transfer. It also allows for convenient output of the pressed blank, making it more suitable for the industrial production of oxidation-resistant bonded copper wire. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the present invention.

[0033] Figure 2 This is a partial front cross-sectional view of the first driving mechanism and the ball milling mechanism of the present invention.

[0034] Figure 3 This is a partial front view cross-sectional structural diagram of the first driving mechanism of the present invention.

[0035] Figure 4 This is a front view cross-sectional structural diagram of the material guiding mechanism of the present invention.

[0036] Figure 5 This is a front view cross-sectional structural diagram of the second driving mechanism and the blank forming mechanism of the present invention.

[0037] In the diagram: 1. Outer shell; 2. First drive mechanism; 21. Reciprocating screw; 22. Drive motor; 23. Driving bevel gear; 24. Synchronous sleeve; 25. Lifting plate; 26. Guide rod; 27. First spring; 28. Upper clasp; 29. ​​Sliding square shaft; 3. Ball mill mechanism; 31. Inner screen cylinder; 32. Outer screen cylinder; 33. Fixed block; 34. Rotating shaft; 35. Driven bevel gear; 36. Connecting rod; 4. Material guiding mechanism; 41. Material guiding hopper; 42. C-shaped baffle; 43. Forming back plate; 5. Second drive mechanism; 51. Driven shaft; 52. Lower clasp; 53. Eccentric wheel; 54. Ring magnet; 6. Blank forming mechanism; 61. First forming plate; 62. Second spring; 63. Fixed plate; 64. Second forming plate; 65. Third forming plate; 66. Third spring; 67. L-shaped magnet; 68. Inverted U-shaped cover. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] This invention provides, for example Figure 1-5 The invention discloses a method for preparing an oxidation-resistant bonded copper wire. The method is implemented by an oxidation-resistant bonded copper wire preparation device, which includes a housing 1. A first driving mechanism 2 is provided on the top inner side of the housing 1. A ball milling mechanism 3 and a material guiding mechanism 4 are arranged sequentially from top to bottom on the outer side of the first driving mechanism 2. A second driving mechanism 5 and a blank forming mechanism 6 are provided on the bottom inner side of the housing 1. The blank forming mechanism 6 is located to the right of the second driving mechanism 5.

[0041] like Figure 2 and Figure 3As shown, the first driving mechanism 2 includes a reciprocating screw 21, a drive motor 22, a driving bevel gear 23, a synchronizing sleeve 24, a lifting plate 25, a guide rod 26, a first spring 27, an upper retaining seat 28, and a sliding square shaft 29. The reciprocating screw 21 penetrates the outer casing 1 and is rotatably connected to it via bearings. The drive motor 22 is fixedly mounted on the top of the outer casing 1 and is drively connected to the reciprocating screw 21. The driving bevel gear 23 is fixedly sleeved on the top outer side of the reciprocating screw 21. The synchronizing sleeve 24... The vertically sliding nested arrangement is located at the bottom outer side of the reciprocating screw 21. The lifting plate 25 is driven and sleeved on the outside of the reciprocating screw 21 and rotated and sleeved on the top outer side of the synchronous sleeve 24 through the bearing. The guide rod 26 slides through the guide hopper 41 and is fixedly connected to the lifting plate 25. The first spring 27 is fixedly connected to the bottom of the synchronous sleeve 24. The upper bracket 28 is fixedly connected to the bottom end of the first spring 27. The sliding square shaft 29 slides through the bottom of the synchronous sleeve 24 and is fixedly connected to the upper bracket 28.

[0042] By setting the above structure, when the reciprocating screw 21 rotates, it drives the lifting plate 25 to continuously descend, and at the same time drives the synchronous sleeve 24 to rotate synchronously. When the lifting plate 25 descends, it continuously pushes the synchronous sleeve 24 downward. When the synchronous sleeve 24 rotates, it drives the upper clamp 28 to rotate synchronously through the sliding square shaft 29. When the upper clamp 28 engages with the lower clamp 52, the upper clamp 28 drives the driven shaft 51 to rotate through the lower clamp 52. In addition, due to the obstruction of the lower clamp 52, when the synchronous sleeve 24 continues to descend, the upper clamp 28 will no longer descend and the first spring 27 will be continuously compressed.

[0043] like Figure 2 As shown, the ball milling mechanism 3 includes an inner screen cylinder 31, an outer screen cylinder 32, a fixed block 33, a rotating shaft 34, a driven bevel gear 35, and a connecting rod 36. The inner screen cylinder 31 is rotatably sleeved on the outside of the reciprocating screw 21 via a bearing, and the outer screen cylinder 32 is rotatably mounted on the side of the inner screen cylinder 31 via a bearing. The inner sides of the inner screen cylinder 31 and the outer screen cylinder 32 are filled with grinding steel balls. The fixed block 33 is rotatably mounted on the end of the outer screen cylinder 32 via a bearing and is fixedly connected to the inner wall of the outer casing 1. The rotating shaft 34 is rotatably nested on the center of the inner side of the fixed block 33 via a bearing. The driven bevel gear 35 is fixedly mounted on the end of the rotating shaft 34 and meshes with the driving bevel gear 23. The connecting rod 36 is fixedly connected between the rotating shaft 34 and the inner wall of the outer screen cylinder 32.

[0044] By setting the above structure, the reciprocating screw 21 can drive the active bevel gear 23 to rotate when it rotates. When the active bevel gear 23 rotates, it drives the rotating shaft 34 to rotate through the driven bevel gear 35. In turn, the rotating shaft 34 drives the outer screen cylinder 32 to rotate continuously through the connecting rod 36. During the rotation of the outer screen cylinder 32, copper powder, tin powder, silicon powder and molybdenum powder are mixed inside the inner screen cylinder 31 and the outer screen cylinder 32. At the same time, the grinding steel balls of the inner screen cylinder 31 and the outer screen cylinder 32 continuously grind the mixed powder. The ground mixed powder passes through the inner screen cylinder 31 and the outer screen cylinder 32 and falls into the top of the guide hopper 41.

[0045] like Figure 4 As shown, the material guiding mechanism 4 includes a material guiding hopper 41, a C-shaped baffle 42, and a forming back plate 43. The material guiding hopper 41 is slidably sleeved on the outside of the reciprocating screw 21 and fixedly disposed in the middle of the inner cavity of the outer shell 1. The C-shaped baffle 42 is fixedly nested on the bottom right side of the material guiding hopper 41 and fits against the inner wall of the outer shell 1. There are two forming back plates 43, which are respectively fixedly disposed on the front and rear sides of the C-shaped baffle 42.

[0046] By setting the above structure, the ground mixed powder can pass through the inner sieve cylinder 31 and the outer sieve cylinder 32 and fall into the top of the guide hopper 41. Then, it slides down the inclined surface of the top of the guide hopper 41 to the inside of the C-shaped baffle 42 and finally falls into the inner side of the molding cavity formed by the two molding back plates 43, the first molding plate 61, the second molding plate 64 and the third molding plate 65.

[0047] like Figure 5 As shown, the second drive mechanism 5 includes a driven shaft 51, a lower retainer 52, an eccentric wheel 53, and an annular magnet 54. The driven shaft 51 is rotatably nested in the bottom of the inner cavity of the outer shell 1 via a bearing. The lower retainer 52 is fixedly disposed on the top of the driven shaft 51. The eccentric wheel 53 is fixedly sleeved on the outside of the driven shaft 51. The annular magnet 54 is fixedly sleeved on the outside of the eccentric wheel 53.

[0048] By setting the above structure, after the upper card holder 28 and the lower card holder 52 are engaged, the upper card holder 28 drives the driven shaft 51 to rotate through the lower card holder 52. In addition, due to the obstruction of the lower card holder 52, when the subsequent synchronous sleeve 24 continues to descend, the upper card holder 28 will no longer descend and the first spring 27 will be continuously compressed.

[0049] like Figure 1 and Figure 5As shown, the blank forming mechanism 6 includes a first forming plate 61, a second spring 62, a fixing plate 63, a second forming plate 64, a third forming plate 65, a third spring 66, an L-shaped magnet 67, and an inverted U-shaped cover 68. The first forming plate 61 is slidably nested at the bottom right side of the outer shell 1. The second spring 62 is fixedly disposed between the first forming plate 61 and the fixing plate 63. The fixing plate 63 is fixedly connected to the inner wall of the outer shell 1. The second forming plate 64 is slidably disposed on top of the first forming plate 61 and magnetically connected to the annular magnet 54. The third forming plate 65 is slidably disposed on top of the second forming plate 64. The third spring 66 is fixedly connected between the second forming plate 64 and the third forming plate 65. The L-shaped magnet 67 is fixedly disposed at the bottom right side of the outer shell 1. The inverted U-shaped cover 68 is slidably sleeved on the outside of the L-shaped magnet 67 and slidably nested at the bottom right side of the outer shell 1. A handle is fixedly disposed on the top of the inverted U-shaped cover 68.

[0050] By setting the above structure, the second forming plate 64 is pushed, causing the third forming plate 65 to move synchronously to the right on the top of the first forming plate 61, thereby pressing the mixed powder. During the rightward movement of the second forming plate 64, the third forming plate 65 moves synchronously. When the right end of the third forming plate 65 is in contact with the first forming plate 61, as the second forming plate 64 continues to move to the right, the third forming plate 65 stops moving to the right, and the third spring 66 is continuously stretched. After the subsequent blank pressing is completed, the second forming plate 64 pushes the first forming plate 61 through the blank, thereby... The first forming plate 61 stretches the second spring 62, and at the same time moves the blank to the right. When the first forming plate 61 moves to the right and comes into contact with the L-shaped magnet 67 and is attracted by the L-shaped magnet 67, as the lifting plate 25 continues to descend, the eccentric wheel 53 begins to reset. During the reset process, the eccentric wheel 53 drives the second forming plate 64 to reset through the ring magnet 54, so that the second forming plate 64 no longer presses the blank. At this time, the inverted U-shaped cover 68 is lifted upward by the handle, and then the blank located on the top of the first forming plate 61 is pushed forward or backward, and then the blank is removed.

[0051] Example 2

[0052] The method specifically includes the following steps:

[0053] S1. Copper powder, tin powder, silicon powder and molybdenum powder are added into the ball mill mechanism 3 through the feed port on the top left side of the outer shell 1. Then, the drive motor 22 is started. After the drive motor 22 is started, it drives the reciprocating screw 21 to rotate continuously. When the reciprocating screw 21 rotates, it drives the driving bevel gear 23 to rotate. When the driving bevel gear 23 rotates, it drives the rotating shaft 34 to rotate through the driven bevel gear 35. In turn, the rotating shaft 34 drives the outer screen cylinder 32 to rotate continuously through the connecting rod 36.

[0054] S2. During the rotation of the outer screen cylinder 32, copper powder, tin powder, silicon powder and molybdenum powder are mixed inside the inner screen cylinder 31 and the outer screen cylinder 32. At the same time, the grinding steel balls of the inner screen cylinder 31 and the outer screen cylinder 32 continuously grind the mixed powder. The ground mixed powder passes through the inner screen cylinder 31 and the outer screen cylinder 32 and falls into the top of the guide hopper 41. Then it slides down the inclined surface of the top of the guide hopper 41 to the inside of the C-shaped baffle 42, and finally falls into the inside of the molding cavity formed by the two molding back plates 43, the first molding plate 61, the second molding plate 64 and the third molding plate 65.

[0055] S3. When the reciprocating screw 21 rotates, it drives the lifting plate 25 to continuously descend, and at the same time drives the synchronous sleeve 24 to rotate synchronously. When the lifting plate 25 descends, it pushes the synchronous sleeve 24 downward continuously. When the synchronous sleeve 24 rotates, it drives the upper clamp 28 to rotate synchronously through the sliding square shaft 29. When the descending distance of the lifting plate 25 reaches the first threshold, the upper clamp 28 engages with the lower clamp 52. At this time, the upper clamp 28 drives the driven shaft 51 to rotate through the lower clamp 52. In addition, due to the obstruction of the lower clamp 52, when the synchronous sleeve 24 continues to descend, the upper clamp 28 no longer descends and the first spring 27 is continuously compressed.

[0056] S4. When the driven shaft 51 rotates, it drives the eccentric wheel 53 to rotate. When the eccentric wheel 53 rotates, it pushes the second forming plate 64 through the ring magnet 54. After the second forming plate 64 is pushed, it drives the third forming plate 65 to move to the right at the top of the first forming plate 61, thereby pressing the mixed powder. When the lifting plate 25 descends to the second threshold, the right end of the third forming plate 65 is in contact with the first forming plate 61. At this time, as the second forming plate 64 continues to move to the right, the third forming plate 65 no longer moves to the right and the third spring 66 is continuously stretched.

[0057] S5. When the lifting plate 25 descends to the third threshold, the blank pressing is completed. At this time, the second forming plate 64 pushes the first forming plate 61 through the blank, thereby stretching the second spring 62 by the first forming plate 61 and driving the blank to move to the right. When the lifting plate 25 descends to the fourth threshold, the first forming plate 61 and the L-shaped magnet 67 adhere to each other and are attracted by the L-shaped magnet 67.

[0058] S6. As the lifting plate 25 continues to descend, the eccentric wheel 53 begins to reset. During the reset process, the eccentric wheel 53 drives the second forming plate 64 to reset through the ring magnet 54, thereby making the second forming plate 64 no longer press the blank. At this time, the inverted U-shaped cover 68 is lifted upward by the handle, and then the blank located on the top of the first forming plate 61 is pushed forward or backward, thereby removing the blank.

[0059] S7. When the lifting plate 25 descends to the fifth threshold, the left side of the second forming plate 64 is released from the left inner side of the first forming plate 61. Subsequently, as the second forming plate 64 continues to move to the left, the second forming plate 64 pushes the first forming plate 61 to disengage from the L-shaped magnet 67. After the first forming plate 61 disengages, it quickly resets under the pull of the second spring 62.

[0060] S8. When the lifting plate 25 descends to the sixth threshold, the lifting plate 25 moves to the lowest end of the reciprocating thread on the outside of the reciprocating screw 21. Subsequently, as the reciprocating screw 21 continues to rotate, the lifting plate 25 moves upward to reset. After the lifting plate 25 moves upward to the seventh threshold, the lifting plate 25 moves to the highest end of the reciprocating thread on the outside of the reciprocating screw 21, i.e., the initial position. At this time, the drive motor 22 is stopped.

[0061] S9. The billet is calcined, and the calcined product is cooled to room temperature and then crushed to obtain modified powder. The modified powder is mixed with electrolytic copper powder and placed in a vacuum melting furnace for heating. After melting, the copper tube for ingot drawing is placed in the ingot clamping device under an argon atmosphere. Cooling water is circulated and the traction mechanism is started to prepare modified single crystal copper rod. The modified single crystal copper rod is drawn into wire to obtain oxidation-resistant bonded copper wire semi-finished product. After annealing the oxidation-resistant bonded copper wire semi-finished product, the oxidation-resistant bonded copper wire finished product is obtained.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An apparatus for preparing oxidation-resistant bonded copper wire, characterized in that: Includes a housing (1), a first driving mechanism (2) is provided on the top inner side of the housing (1), a ball milling mechanism (3) and a material guiding mechanism (4) are provided on the outer side of the first driving mechanism (2) from top to bottom, and a second driving mechanism (5) and a blank forming mechanism (6) are provided on the bottom inner side of the housing (1), with the blank forming mechanism (6) located to the right of the second driving mechanism (5); The first drive mechanism (2) includes a reciprocating screw (21), a drive motor (22), a drive bevel gear (23), a synchronous sleeve (24), a lifting plate (25), a guide rod (26), a first spring (27), an upper bracket (28), and a sliding square shaft (29). The reciprocating screw (21) passes through the outer shell (1) and is rotatably connected to the outer shell (1) through a bearing. The drive motor (22) is fixedly installed on the top of the outer shell (1) and is connected to the reciprocating screw (21) in a transmission connection. The active bevel gear (23) is fixedly sleeved on the top of the outer side of the reciprocating screw (21). The synchronous sleeve (24) is slidably nested on the bottom of the outer side of the reciprocating screw (21) in a vertical direction. The lifting plate (25) is rotatably sleeved on the outer side of the reciprocating screw (21) and is connected to the top of the outer side of the synchronous sleeve (24) through a bearing in a transmission connection. The guide rod (26) slides through the guide hopper (41) and is fixedly connected to the lifting plate (25). The first spring (27) is fixedly connected to the bottom of the synchronous sleeve (24). The upper bracket (28) is fixedly connected to the bottom of the first spring (27). The sliding square shaft (29) slides through the bottom of the synchronous sleeve (24) and is fixedly connected to the upper bracket (28). The ball milling mechanism (3) includes an inner sieve cylinder (31), an outer sieve cylinder (32), a fixed block (33), a rotating shaft (34), a driven bevel gear (35), and a connecting rod (36). The inner screen cylinder (31) is rotatably sleeved on the outside of the reciprocating screw (21) via a bearing, and the outer screen cylinder (32) is rotatably sleeved on the side of the inner screen cylinder (31) via a bearing. The inner screen cylinder (31) and the inner screen cylinder (32) are filled with grinding steel balls. The fixed block (33) is rotatably sleeved on the end of the outer screen cylinder (32) via a bearing and is fixedly connected to the inner wall of the outer shell (1). The rotating shaft (34) is rotatably nested on the center of the inner side of the fixed block (33) via a bearing. The driven bevel gear (35) is fixedly sleeved on the end of the rotating shaft (34) and meshes with the driving bevel gear (23). The connecting rod (36) is fixedly connected between the rotating shaft (34) and the inner wall of the outer screen cylinder (32). The second drive mechanism (5) includes a driven shaft (51), a lower locator (52), an eccentric wheel (53), and an annular magnet (54); The driven shaft (51) is rotatably nested in the bottom of the inner cavity of the outer shell (1) via a bearing, the lower bracket (52) is fixedly disposed at the top of the driven shaft (51), the eccentric wheel (53) is fixedly sleeved on the outside of the driven shaft (51), and the annular magnet (54) is fixedly sleeved on the outside of the eccentric wheel (53). The blank forming mechanism (6) includes a first forming plate (61), a second spring (62), a fixing plate (63), a second forming plate (64), a third forming plate (65), a third spring (66), an L-shaped magnet (67), and an inverted U-shaped cover (68). The first molding plate (61) is slidably nested at the bottom right side of the outer shell (1). The second spring (62) is fixedly disposed between the first molding plate (61) and the fixed plate (63). The fixed plate (63) is fixedly connected to the inner wall of the outer shell (1). The second molding plate (64) is slidably disposed at the top of the first molding plate (61) and magnetically connected to the annular magnet (54). The third molding plate (65) is slidably disposed at the top of the second molding plate (64). The third spring (66) is fixedly connected between the second molding plate (64) and the third molding plate (65). The L-shaped magnet (67) is fixedly disposed at the bottom right side of the outer shell (1). The inverted U-shaped cover (68) is slidably sleeved on the outside of the L-shaped magnet (67) in the vertical direction and slidably nested at the bottom right side of the outer shell (1). A handle is fixedly disposed at the top of the inverted U-shaped cover (68).

2. The equipment for preparing oxidation-resistant bonded copper wire according to claim 1, characterized in that: The material guiding mechanism (4) includes a material guiding hopper (41), a C-shaped baffle (42), and a forming back plate (43).

3. The equipment for preparing oxidation-resistant bonded copper wire according to claim 2, characterized in that: The guide hopper (41) is slidably sleeved on the outside of the reciprocating screw (21) and fixedly installed in the middle of the inner cavity of the outer shell (1). The C-shaped baffle (42) is fixedly nested on the bottom right side of the guide hopper (41) and fits against the inner wall of the outer shell (1). There are two forming back plates (43), and the two forming back plates (43) are respectively fixedly installed on the front and rear sides of the C-shaped baffle (42).

4. A method for preparing an oxidation-resistant bonded copper wire, implemented using the oxidation-resistant bonded copper wire preparation equipment as described in any one of claims 1-3, characterized in that, The method specifically includes the following steps: S1. Copper powder, tin powder, silicon powder and molybdenum powder are added into the ball mill mechanism (3) through the feed port on the top left side of the outer shell (1). Then, the drive motor (22) is started. After the drive motor (22) is started, it drives the reciprocating screw (21) to rotate continuously. When the reciprocating screw (21) rotates, it drives the active bevel gear (23) to rotate. When the active bevel gear (23) rotates, it drives the rotating shaft (34) to rotate through the driven bevel gear (35). In turn, the rotating shaft (34) drives the outer screen cylinder (32) to rotate continuously through the connecting rod (36). S2. During the rotation of the outer screen cylinder (32), copper powder, tin powder, silicon powder and molybdenum powder are mixed inside the inner screen cylinder (31) and the outer screen cylinder (32). At the same time, the grinding steel balls of the inner screen cylinder (31) and the outer screen cylinder (32) continuously grind the mixed powder. The ground mixed powder passes through the inner screen cylinder (31) and the outer screen cylinder (32) and falls into the top of the guide hopper (41). Then it slides down the inclined surface of the top of the guide hopper (41) to the inside of the C-shaped baffle (42) and finally falls into the inner side of the molding cavity formed by the two molding back plates (43), the first molding plate (61), the second molding plate (64) and the third molding plate (65). S3. When the reciprocating screw (21) rotates, it drives the lifting plate (25) to continuously descend, and at the same time drives the synchronous sleeve (24) to rotate synchronously. When the lifting plate (25) descends, it pushes the synchronous sleeve (24) downward continuously. When the synchronous sleeve (24) rotates, it drives the upper card seat (28) to rotate synchronously through the sliding square shaft (29). When the descending distance of the lifting plate (25) reaches the first threshold, the upper card seat (28) and the lower card seat (52) engage. At this time, the upper card seat (28) drives the driven shaft (51) to rotate through the lower card seat (52). In addition, due to the obstruction of the lower card seat (52), when the synchronous sleeve (24) continues to descend, the upper card seat (28) no longer descends and the first spring (27) is continuously compressed. S4. When the driven shaft (51) rotates, it drives the eccentric wheel (53) to rotate. When the eccentric wheel (53) rotates, it pushes the second forming plate (64) through the ring magnet (54). After the second forming plate (64) is pushed, it drives the third forming plate (65) to move to the right synchronously on the top of the first forming plate (61), thereby pressing the mixed powder. When the lifting plate (25) descends to the second threshold, the right end of the third forming plate (65) is in contact with the first forming plate (61). At this time, as the second forming plate (64) continues to move to the right, the third forming plate (65) no longer moves to the right and the third spring (66) is continuously stretched. S5. When the lifting plate (25) descends to the third threshold, the blank pressing is completed. At this time, the second forming plate (64) pushes the first forming plate (61) through the blank, thereby stretching the second spring (62) on the first forming plate (61) and moving the blank to the right. When the lifting plate (25) descends to the fourth threshold, the first forming plate (61) and the L-shaped magnet (67) adhere to each other and are attracted by the L-shaped magnet (67). S6. As the lifting plate (25) continues to descend, the eccentric wheel (53) begins to reset. During the reset process, the eccentric wheel (53) drives the second forming plate (64) to reset through the ring magnet (54), so that the second forming plate (64) no longer presses the blank. At this time, the inverted U-shaped cover (68) is lifted upward by the handle, and then the blank located on the top of the first forming plate (61) is pushed forward or backward, and then the blank is removed. S7. When the lifting plate (25) descends to the fifth threshold, the left side of the second forming plate (64) is separated from the left inner side of the first forming plate (61). Subsequently, as the second forming plate (64) continues to move to the left, the second forming plate (64) pushes the first forming plate (61) to detach from the L-shaped magnet (67). After the first forming plate (61) detaches, it quickly resets under the pull of the second spring (62). S8. When the lifting plate (25) descends to the sixth threshold, the lifting plate (25) moves to the lowest end of the reciprocating thread on the outside of the reciprocating screw (21). Subsequently, as the reciprocating screw (21) continues to rotate, the lifting plate (25) moves up to reset. After the lifting plate (25) moves up to the seventh threshold, the lifting plate (25) moves to the highest end of the reciprocating thread on the outside of the reciprocating screw (21), which is the initial position. At this time, the drive motor (22) is stopped. S9. The billet is calcined, and the calcined product is cooled to room temperature and then crushed to obtain modified powder. The modified powder is mixed with electrolytic copper powder and placed in a vacuum melting furnace for heating. After melting, the copper tube for ingot drawing is placed in the ingot clamping device under an argon atmosphere. Cooling water is circulated and the traction mechanism is started to prepare modified single crystal copper rod. The modified single crystal copper rod is drawn into wire to obtain oxidation-resistant bonded copper wire semi-finished product. After annealing the oxidation-resistant bonded copper wire semi-finished product, the oxidation-resistant bonded copper wire finished product is obtained.

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