A drying apparatus for preparing reinforced composite bonding wire and a method of use

Abstract

The application discloses a kind of reinforced composite bonding wire and preparation method thereof, it is related to bonding wire technical field, first make the negative pressure in heating tank, then let air enter heating tank, and when air flows in heating tank and the collision between powder particles, air dynamics effect can be generated in heating tank, Pd alloy powder is pushed by air flow and starts to dance in heating tank, air circulation around Pd alloy powder is accelerated, and then Pd alloy powder drying is accelerated, simultaneously, the above-mentioned operation is repeated, Pd alloy powder dances in heating tank multiple times and dries, shorten the drying time of Pd alloy powder, simultaneously, powder adhesion does not occur, and then Pd alloy powder block is not generated, simultaneously, gear moves in the process that disc ascends and descends, rack makes rotating rack, and then scraper mechanism is rotated by assembly, and the adhered Pd alloy powder adhered to the inner wall of heating tank can be scraped off by rotating scraper mechanism.

Description

Technical Field

[0001] This invention relates to the field of bonding wire technology, specifically to a drying apparatus and method for preparing reinforced composite bonding wires. Background Technology

[0002] Bonding wires are key materials used in the primary packaging of various electronic components. They connect the internal chip solder pads to the external lead frame, and play a role in transmitting electrical signals and conducting heat. Traditional bonding wires are mainly silver alloy wires and palladium-plated copper wires. However, palladium alloy reinforced composite bonding wires have excellent reliability, good conductivity, and low material cost. Therefore, palladium alloy reinforced composite bonding wires are gradually replacing silver alloy wires and palladium-plated copper wires.

[0003] In the production process of palladium alloy reinforced composite bonding wire, one step requires drying moist Pd alloy powder, which has been washed alternately with deionized water and ethanol, in an oven at high temperature for 12 hours to obtain dried Pd alloy powder. Traditional ovens simply spread the Pd alloy powder evenly inside the oven, and then heat the oven to dry it. In this method, the Pd powder cannot move inside the oven, resulting in slow air circulation around the Pd powder and long drying time. The traditional oven drying of Pd alloy powder takes 12 hours, resulting in low bonding wire production efficiency. At the same time, since the Pd alloy powder is in contact with each other, if the Pd alloy powder has high moisture content, it is easy to adhere during the drying process and form clumps. After drying, the Pd alloy powder clumps need to be crushed into powder, which requires a crushing device and consumes time, further reducing the production efficiency of bonding wire. Therefore, those skilled in the art have proposed a drying device and method for preparing reinforced composite bonding wire. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a drying apparatus and method for preparing reinforced composite bonding fibers, thus solving the problems mentioned above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a drying device and method for preparing reinforced composite bonding wires, comprising a heating tank, wherein a circular hole is provided at the center of the lower surface of the heating tank, and a matching disc is provided inside the heating tank. Two extension rods extending to the outside of the heating tank are installed on the lower surface of the disc corresponding to the side of each circular hole. A metal base plate is installed at the lower end of each extension rod extending to the outside of the heating tank. A first spring is fitted between the metal base plate and the heating tank on the surface of each extension rod. A magnetic ring is provided on the outer side of each first spring above the corresponding metal base plate. A mounting base is provided directly above the heating tank. The mounting base has an internal slot, and a groove is formed on one side of the slot on the upper surface of the mounting base. A central cavity is formed between the slot and the groove inside the mounting base. A sliding rod is installed in the central cavity, and a sliding plate is slidably mounted on the sliding rod. A baffle is installed on the lower surface of the sliding plate. The baffle extends into the groove and blocks it. The other end of the baffle extends into the inner wall of the slot without blocking it. A compressed third spring is fitted between the sliding rod surface and the inner wall of the central cavity. A strip groove communicating with the central cavity is formed on the upper surface of the mounting base. A protrusion extending through the strip groove to the outside of the mounting base is installed on the upper surface of the sliding plate. A connecting mechanism is installed between the side of the protrusion and one of the metal base plates below.

[0006] As a further technical solution of the present invention, the connecting mechanism includes an L-shaped plate installed on the upper surface of the heating tank and located on one side of the mounting base. A fixed pulley is installed on the upper surface of the L-shaped plate, and a connecting plate is installed on the lower surface of one of the metal base plates below the L-shaped plate. A steel wire rope with its other end passing around the fixed pulley and fixedly connected to the protrusion is installed on the upper surface of the connecting plate.

[0007] As a further technical solution of the present invention, a negative pressure generator is installed on the upper surface of the heating tank on the other side of the mounting base. The input end of the negative pressure generator is connected to a connecting pipe communicating with the empty slot. A three-way pipe communicating with the heating tank is installed at the center of the upper surface of the heating tank. One end of the other two ends of the three-way pipe is connected to the empty slot, and the other end of the other two ends of the three-way pipe is connected to the groove. Each magnetic ring has two fixing rods whose upper ends are fixedly connected to the heating tank installed on its upper surface.

[0008] As a further technical solution of the present invention, a round rod is rotatably mounted at the center of the upper surface of the disk, a vertical plate is mounted on one side of the round rod on the lower surface of the disk, a gear is rotatably mounted on the side of the vertical plate, a rotating rod penetrating the vertical plate is mounted at the center of the side of the gear, a first bevel tooth is mounted at the end of the rotating rod penetrating the vertical plate, a horizontal plate is mounted on the side of the vertical plate above the first bevel tooth, and a second bevel tooth meshing with the first bevel tooth is mounted at the lower end of the round rod penetrating the disk and the horizontal plate.

[0009] As a further technical solution of the present invention, a fixing plate is installed on one side of the gear on the inner wall of the circular hole, and a vertical rack that meshes with the gear is installed at the end of the fixing plate. A strip plate is installed on the side of the circular rod above the disc, and a scraper mechanism is installed on the upper surface of the strip plate.

[0010] As a further technical solution of the present invention, the scraper mechanism includes a first scraper that contacts the inner wall of the heating tank. A rectangular groove is formed in the interior of the first scraper near the upper end. A slot is formed on the upper surface and side surface of the first scraper. A second scraper that extends to the outside and contacts the top surface of the heating tank is slidably disposed in the slot. A limiting plate is slidably installed in the rectangular groove. Multiple evenly distributed second springs are arranged in the rectangular groove below the limiting plate. A connecting rod that extends into the slot and is fixedly connected to the second scraper is installed on the upper surface of the limiting plate.

[0011] As a further technical solution of the present invention, a tank door is provided on the side of the heating tank, and a filter screen is provided at the connection port between the three-way pipe and the heating tank.

[0012] Specifically, the following steps are included:

[0013] S1. Open the tank door and place the washed and damp Pd alloy powder onto the disc of the heating tank, spreading it evenly on the disc. Then close the tank door, turn on the heating tank to increase its internal temperature, and dry the damp Pd alloy powder inside. The evaporation of liquid on the surface of the Pd alloy powder makes the air inside the heating tank humid.

[0014] S2. Simultaneously, the negative pressure generator operates by drawing away the humid air inside the heating tank through the connecting pipe, empty slot, and three-way pipe, making the inside of the heating tank a vacuum. When the inside of the heating tank becomes a vacuum, the pressure inside and outside the heating tank is different. The external pressure is greater than the elastic force of the first spring. The external pressure pushes the disc to rise. The rising disc drives the metal base plate to rise through the extension rod. The rising metal base plate compresses the first spring until each metal base plate moves into the magnetic ring. The magnetic ring uses magnetic force to attract the metal base plate, and the disc stops rising.

[0015] S3. As the metal base plate rises, the connecting plate does not pull the protrusion through the steel wire rope. The third spring rebounds and drives the sliding plate to move towards the empty groove. The moving sliding plate drives the baffle to move towards the empty groove, causing the baffle to block the empty groove. The groove opens, thereby relieving the negative pressure generator from its effect on the heating tank. At the same time, the inside of the heating tank is connected to the outside through the groove and the three-way pipe. Outside air enters the heating tank through the groove and the three-way pipe. Due to the air flow in the heating tank and the collision between powder particles, an aerodynamic effect is generated inside the heating tank. The Pd alloy powder is pushed by the airflow and begins to fly in the heating tank. During the flying process, the air circulation around the Pd alloy powder is accelerated, which speeds up the drying of the Pd alloy powder.

[0016] S4. When air enters the heating tank and the pressure inside and outside the heating tank is the same, and the magnetic force of the magnetic ring on the metal base plate is less than the elastic force of the first spring, the two first springs rebound and drive the metal base plate to detach from the magnetic ring. The descending metal base plate drives the disc to descend through the extension rod until it returns to its original position. At the same time, the descending metal base plate with the connecting plate pulls the protrusion through the steel wire rope, causing the protrusion to move towards the groove. The moving protrusion drives the baffle to move towards the groove through the sliding plate, compressing the third spring while blocking the groove and opening the empty slot. Then the operating negative pressure generator continues to extract the humid air generated by the drying Pd alloy powder that was just blown into the heating tank, so that the heating tank continues to generate negative pressure. At the same time, the above operation is repeated to make the Pd alloy powder fly and dry multiple times in the heating tank.

[0017] S5. During the upward movement of the disc, the rising disc will drive the gear to rise. Since the gear meshes with the rack, the stationary rack will rotate the gear during the upward movement of the gear. The rotating gear will drive the first bevel tooth to rotate through the rotating rod. The rotating first bevel tooth will drive the round rod to rotate through the second bevel tooth. The rotating round rod will drive the scraper mechanism to rotate through the strip plate. The rotating scraper mechanism can scrape off the Pd alloy powder adhering to the inner wall of the heating tank. When the disc finishes rising, the scraper mechanism will have rotated one revolution. At the same time, when the disc rises, the second scraper will not rise due to the limit of the top surface of the heating tank. Meanwhile, the rising first scraper will cause the second scraper to enter the slot and compress the second spring.

[0018] S6. When the disc descends, the descending gear will reverse through the rack, which in turn will drive the scraper mechanism to reverse and scrape the inner wall of the heating tank again through the above operation. The descending disc will also drive the vertical plate to descend, and the two second springs will rebound to move the second scraper out of the groove until it returns to its original position. After the Pd alloy powder is dried, open the tank door and take out the powder. The operation is complete. Beneficial effects

[0019] This invention provides a drying apparatus and method for preparing reinforced composite bonded fibers. Compared with the prior art, it has the following advantages:

[0020] 1. A drying apparatus and method for preparing reinforced composite bonding wires, comprising: firstly, a heating tank dries the moist Pd alloy powder inside; simultaneously, a negative pressure generator extracts the moist air generated during the drying process in the heating tank, creating a negative pressure inside the tank; this negative pressure causes the metal base plate to rise and be fixed to the magnetic ring, and a third spring rebounds, causing the baffle to block the slot and open the groove, allowing air to enter the heating tank; the airflow and collisions between powder particles create an aerodynamic effect within the heating tank, causing the Pd alloy powder to be propelled by the airflow and begin to circulate within the tank, accelerating airflow around the Pd alloy powder and thus accelerating the drying of the Pd alloy powder; and finally, when the air pressure inside the heating tank reaches equilibrium, the first spring rebounds, causing the metal base plate to rise and be fixed to the magnetic ring, and a third spring to rebound ... The base plate descends, which in turn moves the protrusion via a steel wire rope, causing the baffle to move and opening the empty slot and closing the groove. This creates negative pressure inside the heating tank, and the above operation is repeated, causing the Pd alloy powder to fly around and dry multiple times inside the heating tank. This shortens the drying time of the Pd alloy powder, and because the Pd alloy powder is continuously in a flying state, there is no powder adhesion, thus preventing the formation of Pd alloy powder lumps. This eliminates the need for a crushing mechanism to break up the powder lumps, reducing subsequent operation steps. At the same time, the rising and falling of the disc drives the gears to move, and the rack rotates the moving rack, which in turn drives the scraper mechanism to rotate. The rotating scraper mechanism can scrape off the Pd alloy powder adhering to the inner wall of the heating tank, eliminating the need for manual cleaning by personnel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a drying device and its usage method for preparing reinforced composite bonding wires;

[0022] Figure 2 A side view of a drying apparatus for preparing reinforced composite bonding wires and a method of using it;

[0023] Figure 3 A cross-sectional view of a drying apparatus for preparing reinforced composite bonding wires and a method of using it;

[0024] Figure 4 This is a schematic diagram of the powder scraping component structure of a drying device and method for preparing reinforced composite bonded wires.

[0025] Figure 5 A partial cross-sectional view of a powder scraping assembly in a drying apparatus for preparing reinforced composite bonded wires and a method of using it;

[0026] Figure 6 for Figure 3 Enlarged view of section A in the middle;

[0027] Figure 7 for Figure 3 Enlarged view of section B;

[0028] Figure 8 for Figure 4 Enlarged view of section C;

[0029] Figure 9 for Figure 2 Enlarged view of section D in the middle.

[0030] In the diagram: 1. Heating tank; 2. Circular hole; 3. Extension rod; 4. Metal base plate; 5. First spring; 6. Magnetic ring; 7. Mounting base; 8. Hollow slot; 9. Groove; 10. Central cavity; 11. Slide rod; 12. Slide plate; 13. Baffle; 14. Strip groove; 15. Protrusion; 16. L-shaped plate; 17. Fixed pulley; 18. Connecting plate; 19. Steel wire rope; 20. Negative pressure generator; 21. Connecting pipe; 22. T-connector; 2 3. Fixed rod; 24. Disc; 25. Vertical plate; 26. Gear; 27. First bevel gear; 28. Horizontal plate; 29. ​​Second bevel gear; 30. Fixed plate; 31. Rack; 32. Rotating rod; 33. Round rod; 34. Strip plate; 35. First scraper; 36. Rectangular groove; 37. Slot; 38. Second scraper; 39. Limiting plate; 40. Second spring; 41. Connecting rod; 42. Tank door; 43. Third spring. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-9This invention provides a drying device and method for preparing reinforced composite bonding wires: The drying device and method for preparing reinforced composite bonding wires include a heating tank 1. A circular hole 2 is formed at the center of the lower surface of the heating tank 1. A matching disc 24 is disposed inside the heating tank 1. Two extension rods 3 extending to the outside of the heating tank 1 are installed on the lower surface of the disc 24 corresponding to the side of each circular hole 2. A metal base plate 4 is installed at the lower end of each extension rod 3 extending to the outside of the heating tank 1. A first spring 5 is fitted between the metal base plate 4 and the heating tank 1 on the surface of each extension rod 3. A magnetic ring 6 is disposed above the corresponding metal base plate 4 on the outer side of each first spring 5. A mounting base 7 is disposed directly above the heating tank 1. The mounting base 7 has an internal slot 8. A groove 9 is formed on one side of the upper surface of the mounting base 7. A central cavity 10 is formed between the slot 8 and the groove 9 inside the mounting base 7. A sliding rod 11 is installed in the central cavity 10. A sliding plate 12 is slidably mounted on the sliding rod 11. A baffle 13 is installed on the lower surface of the sliding plate 12. The baffle 13 extends into the groove 9 and blocks it. The other end of the baffle 13 extends into the inner wall of the slot 8 without blocking it. A compressed third spring 43 is fitted between the surface of the sliding rod 11 and the inner wall of the central cavity 10. A strip groove 14 communicating with the central cavity 10 is formed on the upper surface of the mounting base 7. A protrusion 15 is installed on the upper surface of the sliding plate 12, extending through the strip groove 14 to the outside of the mounting base 7. The side of the protrusion 15 is flush with the lower surface of the groove 10. A connecting mechanism is installed between one of the metal base plates 4. The connecting mechanism includes an L-shaped plate 16 installed on the upper surface of the heating tank 1 and on one side of the mounting base 7. A fixed pulley 17 is installed on the upper surface of the L-shaped plate 16. A connecting plate 18 is installed on the lower surface of one of the metal base plates 4 below the L-shaped plate 16. A steel wire rope 19 is installed on the upper surface of the connecting plate 18, with its other end passing around the fixed pulley 17 and fixedly connected to the protrusion 15. A negative pressure generator 20 is installed on the upper surface of the heating tank 1 on the other side of the mounting base 7. A connecting pipe 21 communicating with the empty slot 8 is installed at the input end of the negative pressure generator 20. A three-way pipe 22 communicating with the heating tank 1 is installed at the center of the upper surface of the heating tank 1. One end of the other two ends of the three-way pipe 22 is connected to the empty slot 8. The other end of each outer end is connected to the groove 9. Two fixing rods 23, whose upper ends are fixedly connected to the heating tank 1, are installed on the upper surface of each magnetic ring 6. A tank door 42 is provided on the side of the heating tank 1. A filter screen is provided at the connection port between the three-way pipe 22 and the heating tank 1. During use, the negative pressure generator 20 operates by sucking away the humid air inside the heating tank 1 through the connecting pipe 21, the empty groove 8, and the three-way pipe 22, making the inside of the heating tank 1 a vacuum. When the inside of the heating tank 1 becomes a vacuum, the pressure inside and outside the heating tank 1 is different. The external pressure is greater than the elastic force of the first spring 5. The external pressure pushes the disc 24 upward. The rising disc 24 drives the metal base plate 4 upward through the extension rod 3. The rising metal base plate 4 compresses the first spring 5 until each metal base plate 4 moves into the magnetic ring 6.The magnetic ring 6 uses magnetic force to attract the metal base plate 4, stopping the disc 24 from rising. As the metal base plate 4 rises, the connecting plate 18, without pulling the protrusion 15 via the steel wire rope 19, causes the third spring 43 to rebound, moving the sliding plate 12 towards the empty slot 8. The moving sliding plate 12 then moves the baffle 13 towards the empty slot 8, blocking it and opening the groove 9. This releases the negative pressure generator 20 from the heating tank 1. Simultaneously, the heating tank 1 is connected to the outside world through the groove 9 and the three-way pipe 22. Outside air enters the heating tank 1 through the groove 9 and the three-way pipe 22. Due to the airflow and collisions between powder particles in the heating tank 1, an aerodynamic effect is generated, causing the Pd alloy powder to be propelled by the airflow and begin to circulate within the heating tank 1. This circulation accelerates the airflow around the Pd alloy powder, speeding up its drying process.

[0033] Please see Figure 2 , Figure 4-5 as well as Figure 8-9 A circular rod 33 is rotatably mounted at the center of the upper surface of the disc 24. A vertical plate 25 is mounted on one side of the circular rod 33 on the lower surface of the disc 24. A gear 26 is rotatably mounted on the side of the vertical plate 25. A rotating rod 32, penetrating the vertical plate 25, is mounted at the center of the side of the gear 26. A first bevel tooth 27 is mounted at the end of the rotating rod 32 that penetrates the vertical plate 25. A horizontal plate 28 is mounted on the side of the vertical plate 25 above the first bevel tooth 27. A second bevel tooth 29, meshing with the first bevel tooth 27, is mounted at the lower end of the circular rod 33 that penetrates the disc 24 and the horizontal plate 28. A fixing plate 30 is mounted on one side of the gear 26 on the inner wall of the circular hole 2. A vertical rack 31, meshing with the gear 26, is mounted at the end of the fixing plate 30. A strip plate 34 is installed on the side of the round rod 33 above the disc 24. A scraper mechanism is installed on the upper surface of the strip plate 34. During use, as the disc 24 rises, it drives the gear 26 to rise. Since the gear 26 meshes with the rack 31, the stationary rack 31 rotates the gear 26 as it rises. The rotating gear 26 drives the first bevel tooth 27 to rotate through the rotating rod 32. The rotating first bevel tooth 27 drives the round rod 33 to rotate through the second bevel tooth 29. The rotating round rod 33 drives the scraper mechanism to rotate through the strip plate 34. The rotating scraper mechanism can scrape off the Pd alloy powder adhering to the inner wall of the heating tank 1.

[0034] Please see Figure 3 and Figure 7The scraper mechanism includes a first scraper 35 that contacts the inner wall of the heating tank 1. A rectangular groove 36 is formed near the upper end of the first scraper 35. A slot 37 is formed on the upper surface and side of the first scraper 35. A second scraper 38 is slidably arranged in the slot 37, extending to the outside and contacting the inner top surface of the heating tank 1. A limiting plate 39 is slidably installed in the rectangular groove 36. Multiple evenly distributed second springs 40 are arranged in the rectangular groove 36 below the limiting plate 39. A connecting rod 41 extending into the slot 37 and fixedly connected to the second scraper 38 is installed on the upper surface of the limiting plate 39. In use, when the disc 24 rises, the second scraper 38 is prevented from rising due to the limiting effect of the inner top surface of the heating tank 1. At the same time, the rising first scraper 35 causes the second scraper 38 to enter the slot 37 and compress the second springs 40.

[0035] Specifically, the following steps are included:

[0036] S1. Open the tank door 42 and put the washed and damp Pd alloy powder into the disc 24 of the heating tank 1 and spread it evenly on the disc 24. Then close the tank door 42, turn on the heating tank 1 to increase its internal temperature, and dry the damp Pd alloy powder inside. The liquid evaporation on the surface of the Pd alloy powder makes the air inside the heating tank 1 humid.

[0037] S2. Simultaneously, the negative pressure generator 20 operates by drawing away the humid air inside the heating tank 1 through the connecting pipe 21, the empty slot 8, and the three-way pipe 22, making the inside of the heating tank 1 a vacuum. When the inside of the heating tank 1 becomes a vacuum, the pressure inside and outside the heating tank 1 is different. The external pressure is greater than the elastic force of the first spring 5. The external pressure pushes the disc 24 to rise. The rising disc 24 drives the metal base plate 4 to rise through the extension rod 3. The rising metal base plate 4 compresses the first spring 5 until each metal base plate 4 moves into the magnetic ring 6. The magnetic ring 6 uses magnetic force to attract the metal base plate 4, and the disc 24 stops rising.

[0038] S3. As the metal base plate 4 rises, the connecting plate 18 does not pull the protrusion 15 through the steel wire rope 19. The third spring 43 rebounds and drives the sliding plate 12 to move towards the empty groove 8. The moving sliding plate 12 drives the baffle 13 to move towards the empty groove 8, so that the baffle 13 blocks the empty groove 8, the groove 9 opens, and thus releases the negative pressure generator 20 from the heating tank 1. At the same time, the interior of the heating tank 1 is connected to the outside through the groove 9 and the three-way pipe 22. Outside air enters the heating tank 1 through the groove 9 and the three-way pipe 22. Due to the air flowing in the heating tank 1 and the collision between powder particles, an aerodynamic effect will be generated in the heating tank 1, causing the Pd alloy powder to be pushed by the airflow and begin to fly in the heating tank 1. During the flying process, the air circulation around the Pd alloy powder is accelerated, and the drying of the Pd alloy powder is accelerated.

[0039] S4. When air enters the heating tank 1 and the pressure inside and outside the heating tank 1 is the same, and the magnetic force of the magnetic ring 6 on the metal base plate 4 is less than the elastic force of the first spring 5, the two first springs 5 ​​rebound and drive the metal base plate 4 to detach from the magnetic ring 6. The descending metal base plate 4 drives the disc 24 to descend through the extension rod 3 until it returns to its original position. At the same time, the descending metal base plate 4, which is equipped with a connecting plate 18, pulls the protrusion 15 through the steel wire rope 19, causing the protrusion 15 to move towards the groove 9. The moving protrusion 15 drives the baffle 13 to move towards the groove 9 through the slide plate 12, compressing the third spring 43 while blocking the groove 9 and opening the empty slot 8. Then the operating negative pressure generator 20 continues to extract the humid air generated by the drying Pd alloy powder that was just blown into the heating tank 1, so that the heating tank 1 continues to generate negative pressure. At the same time, the above operation is repeated so that the Pd alloy powder flies and dries multiple times in the heating tank 1.

[0040] S5. During the ascent of the disc 24, the rising disc 24 will drive the gear 26 to rise. Since the gear 26 meshes with the rack 31, the stationary rack 31 will rotate the gear 26 during the ascent of the gear 26. The rotating gear 26 will drive the first bevel tooth 27 to rotate through the rotating rod 32. The rotating first bevel tooth 27 will drive the round rod 33 to rotate through the second bevel tooth 29. The rotating round rod 33 will drive the scraper mechanism to rotate through the strip plate 34. The rotating scraper mechanism can scrape off the Pd alloy powder adhering to the inner wall of the heating tank 1. When the disc 24 has finished rising, the scraper mechanism has rotated one revolution. At the same time, when the disc 24 rises, the second scraper 38 is limited by the inner top surface of the heating tank 1, preventing it from rising. At the same time, the rising first scraper 35 will cause the second scraper 38 to enter the slot 37 and compress the second spring 40.

[0041] S6. When the disc 24 descends, the descending gear 26 will reverse through the rack 31, thereby driving the scraper mechanism to reverse and scrape the inner wall of the heating tank 1 again through the above operation. The descending disc 24 will drive the vertical plate 25 to descend, and the two second springs 40 will rebound to move the second scraper 38 out of the slot 37 until it returns to its original position. When the Pd alloy powder is dried, open the tank door 42 to take out the powder, and the operation is completed.

Claims

1. A drying apparatus for preparing reinforced composite bonding fibers, comprising a heating tank (1), characterized in that, A circular hole (2) is provided at the center of the lower surface of the heating tank (1). A matching disc (24) is provided inside the heating tank (1). Two extension rods (3) extending to the outside of the heating tank (1) are installed on each side of the circular hole (2) on the lower surface of the disc (24). A metal base plate (4) is installed at the lower end of each extension rod (3) extending to the outside of the heating tank (1). A first spring (5) is sleeved between the metal base plate (4) and the heating tank (1) on the surface of each extension rod (3). A magnetic ring (6) is provided on the outer side of each first spring (5) above the corresponding metal base plate (4). A mounting base (7) is provided directly above the heating tank (1). A slot (8) is provided inside the mounting base (7). A groove (9) is provided on one side of the slot (8) on the upper surface of the mounting base (7). A central cavity (10) is provided between the empty slot (8) and the groove (9). A slide rod (11) is installed in the central cavity (10). A slide plate (12) is slidably mounted on the slide rod (11). A baffle (13) is installed on the lower surface of the slide plate (12). The baffle (13) extends into the groove (9) and blocks it. The other end of the baffle (13) extends into the inner wall of the empty slot (8) without blocking it. A compressed third spring (43) is sleeved between the slide rod (11) and the inner wall of the slide plate (12) and the central cavity (10). A strip groove (14) communicating with the central cavity (10) is provided on the upper surface of the mounting base (7). A protrusion (15) extending through the strip groove (14) to the outside of the mounting base (7) is installed on the upper surface of the slide plate (12). A connecting mechanism is installed between the side of the protrusion (15) and one of the metal base plates (4) below. The connecting mechanism includes an L-shaped plate (16) installed on the upper surface of the heating tank (1) and located on one side of the mounting base (7). A fixed pulley (17) is installed on the upper surface of the L-shaped plate (16). A connecting plate (18) is installed on the lower surface of one of the metal base plates (4) below the L-shaped plate (16). A wire rope (19) with its other end passing around the fixed pulley (17) and fixedly connected to the protrusion (15) is installed on the upper surface of the connecting plate (18). A negative pressure generator (20) is installed on the upper surface of the heating tank (1) on the other side of the mounting base (7). A connecting pipe (21) connected to the empty slot (8) is installed at the input end of the negative pressure generator (20). A three-way pipe (22) connected to the heating tank (1) is installed at the center of the upper surface of the heating tank (1). One end of the other two ends of the three-way pipe (22) is connected to the empty slot (8), and the other end of the other two ends of the three-way pipe (22) is connected to the groove (9). Two fixing rods (23) whose upper ends are fixedly connected to the heating tank (1) are installed on the upper surface of each magnetic ring (6).

2. The drying apparatus for preparing reinforced composite bonding fibers according to claim 1, characterized in that, A round rod (33) is rotatably mounted on the center of the upper surface of the disc (24). A vertical plate (25) is mounted on one side of the round rod (33) on the lower surface of the disc (24). A gear (26) is rotatably mounted on the side of the vertical plate (25). A rotating rod (32) penetrating the vertical plate (25) is mounted on the center of the side of the gear (26). A first bevel tooth (27) is mounted on the end of the rotating rod (32) penetrating the vertical plate (25). A horizontal plate (28) is mounted on the side of the vertical plate (25) above the first bevel tooth (27). A second bevel tooth (29) meshing with the first bevel tooth (27) is mounted on the lower end of the round rod (33) penetrating the disc (24) and the horizontal plate (28).

3. The drying apparatus for preparing reinforced composite bonding fibers according to claim 2, characterized in that, A fixing plate (30) is installed on the inner wall of the circular hole (2) on one side of the gear (26). A vertical rack (31) that meshes with the gear (26) is installed at the end of the fixing plate (30). A strip plate (34) is installed on the side of the circular rod (33) above the disc (24). A scraper mechanism is installed on the upper surface of the strip plate (34).

4. The drying apparatus for preparing reinforced composite bonding fibers according to claim 3, characterized in that, The scraper mechanism includes a first scraper (35) that contacts the inner wall of the heating tank (1). A rectangular groove (36) is provided inside the first scraper (35) near the upper end. A slot (37) is provided on the upper surface and side surface of the first scraper (35). A second scraper (38) is slidably arranged in the slot (37) with its upper end extending to the outside and contacting the inner top surface of the heating tank (1). A limiting plate (39) is slidably installed in the rectangular groove (36). Multiple evenly distributed second springs (40) are provided in the rectangular groove (36) below the limiting plate (39). A connecting rod (41) extending into the slot (37) and fixedly connected to the second scraper (38) is installed on the upper surface of the limiting plate (39).

5. A drying apparatus for preparing reinforced composite bonded fibers according to claim 4, characterized in that, The heating tank (1) is provided with a tank door (42) on its side, and a filter screen is provided at the connection port between the three-way pipe (22) and the heating tank (1).

6. A method of using the drying apparatus for preparing reinforced composite bonding fibers according to claim 5, characterized in that, Specifically, the following steps are included: S1. Open the tank door (42) and put the washed and damp Pd alloy powder into the disc (24) of the heating tank (1) and spread it flat on the disc (24). Then close the tank door (42), turn on the heating tank (1) to increase its internal temperature and dry the damp Pd alloy powder inside. The liquid evaporation on the surface of the Pd alloy powder makes the air inside the heating tank (1) humid. S2. At the same time, the negative pressure generator (20) operates by drawing away the humid air inside the heating tank (1) through the connecting pipe (21), the empty slot (8) and the three-way pipe (22), making the inside of the heating tank (1) a vacuum. When the inside of the heating tank (1) becomes a vacuum, the pressure inside and outside the heating tank (1) is different. The external pressure is greater than the elastic force of the first spring (5). The external pressure pushes the disc (24) to rise. The rising disc (24) drives the metal base plate (4) to rise through the extension rod (3). The rising metal base plate (4) compresses the first spring (5) until each metal base plate (4) moves into the magnetic ring (6). The magnetic ring (6) uses magnetic force to attract the metal base plate (4), and the disc (24) stops rising. S3. When the metal base plate (4) rises, the connecting plate (18) pulls the protrusion (15) without the steel wire rope (19). The third spring (43) rebounds and drives the sliding plate (12) to move towards the empty groove (8). The moving sliding plate (12) drives the baffle (13) to move towards the empty groove (8), so that the baffle (13) blocks the empty groove (8), the groove (9) opens, and then the negative pressure generator (20) is relieved from its effect on the heating tank (1). At the same time, the interior of the heating tank (1) is connected to the outside through the groove (9) and the three-way pipe (22). The outside air enters the heating tank (1) through the groove (9) and the three-way pipe (22). Due to the air flowing in the heating tank (1) and the collision between the powder particles, an aerodynamic effect will be generated in the heating tank (1), so that the Pd alloy powder is pushed by the airflow and begins to fly in the heating tank (1). During the flying process, the air circulation around the Pd alloy powder is accelerated, and the drying of the Pd alloy powder is accelerated. S4. When air enters the heating tank (1) and the pressure inside and outside the heating tank (1) is the same, and the magnetic force of the magnetic ring (6) on the metal base plate (4) is less than the elastic force of the first spring (5), then the two first springs (5) rebound and drive the metal base plate (4) to detach from the magnetic ring (6). The descending metal base plate (4) drives the disc (24) down through the extension rod (3) until it returns to its original position. At the same time, the descending metal base plate (4) with the connecting plate (18) pulls the protrusion (15) through the steel wire rope (19), so that the protrusion (15) The moving protrusion (15) moves towards the groove (9), and the moving protrusion (15) drives the baffle (13) to move towards the groove (9) through the slide plate (12). While compressing the third spring (43), it blocks the groove (9) and opens the empty slot (8). Then the operating negative pressure generator (20) continues to extract the humid air generated by the drying Pd alloy powder that was just blown into the heating tank (1) to dry, so that the heating tank (1) continues to generate negative pressure. At the same time, the above operation is repeated so that the Pd alloy powder flies and dries multiple times in the heating tank (1). S5. During the ascent of the disk (24), the rising disk (24) will drive the gear (26) to rise. Since the gear (26) meshes with the rack (31), the stationary rack (31) will rotate the gear (26) during the ascent of the gear (26). The rotating gear (26) will drive the first bevel tooth (27) to rotate through the rotating rod (32). The rotating first bevel tooth (27) will drive the round rod (33) to rotate through the second bevel tooth (29). (33) The scraper mechanism is rotated by the strip plate (34). The rotating scraper mechanism can scrape off the Pd alloy powder adhering to the inner wall of the heating tank (1). When the disc (24) is raised, the scraper mechanism rotates exactly one revolution. At the same time, when the disc (24) is raised, it is prevented from rising due to the limit of the top surface of the heating tank (1) on the second scraper (38). At the same time, the rising first scraper (35) will cause the second scraper (38) to enter the slot (37) and compress the second spring (40). S6. When the disc (24) descends, the descending gear (26) will reverse through the rack (31), and then through the above operation, the scraper mechanism will reverse to scrape the inner wall of the heating tank (1) again. The descending disc (24) will drive the vertical plate (25) to descend, and then the two second springs (40) will rebound to move the second scraper (38) out of the slot (37) until it is restored. When the Pd alloy powder is dried, open the tank door (42) to take out the powder. The operation is completed.

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