Drying device for bonding silver wire preparation

Abstract

The utility model discloses a drying device for bonding silver wire preparation, and relates to the technical field of bonding silver wire preparation. The device comprises a device main body, a fan, a heat pump, a winding and unwinding mechanism, a bonding silver wire and a spraying mechanism, a heat insulation mechanism is arranged at a second cavity, the device is provided with a movable heat insulation plate, a connecting plate, an electric push rod and the heat pump, after the bonding silver wire is threaded, the electric push rod pushes the connecting plate to move downwards, and the heat pump drives the bonding silver wire to rotate. The movable heat insulation plates are blocked in the rectangular grooves in the two sides of the second cavity, heat of the coiled pipe is sealed in the second cavity as much as possible, the drying efficiency is improved to a certain degree, meanwhile, due to the arrangement of the heat pump, environment media and low-grade heat energy of the exhaust bent pipe connected with the heat pump can be fully utilized, and the energy-saving effect is achieved. After a small amount of reverse circulation net work is consumed, a large heat supply amount is obtained and used for heating the coiled pipe, and therefore the drying efficiency and the resource utilization reasonability of the whole drying process are both improved to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of bonding silver wire preparation, in particular to a drying device for preparing bonding silver wire. Background Art

[0002] Silver bonding wire is a product that has emerged in the LED and IC industries in the past two years to replace traditional gold wire. During the preparation process of silver bonding wire, heat treatment is required to improve its performance. That is, the silver bonding wire is first slowly heated to a certain temperature, and then cooled at an appropriate speed to achieve the purpose of reducing hardness, improving machinability, reducing residual stress, stabilizing size, reducing deformation and crack tendency, refining grains, adjusting structure, and eliminating tissue defects. Afterwards, annealing liquid needs to be sprayed to prevent adhesion between wires during winding. In this process, a drying device for preparing silver bonding wire is required.

[0003] In order to ensure that the bonding silver wire can pass through, the existing drying device for preparing bonding silver wire usually has a corresponding groove. If the size of the corresponding groove is too small, it will affect the process of passing the bonding silver wire through the entire device. However, the corresponding groove itself will dissipate some heat when the bonding silver wire is dried, affecting the drying efficiency. Under the premise of ensuring smooth threading, its drying efficiency needs to be further improved, and the rationality of resource utilization in the entire drying process also needs to be further improved. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a drying device for preparing bonding silver wires to solve the technical problem that the existing drying device for preparing bonding silver wires needs to be further improved in terms of drying efficiency and rationality of resource utilization in the entire drying process while ensuring smooth threading.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drying device for preparing bonding silver wire, comprising a device body, a fan, a heat pump, a reeling and winding mechanism, bonding silver wire and a spraying mechanism, the device body being provided with a first cavity, a second cavity, a third cavity, a rectangular groove and an air cavity, the interior of the device body being provided with a fixed heat insulation plate, the second cavity being provided with a heat insulation mechanism, a serpentine tube being provided at the lower part of the second cavity, and an exhaust elbow being provided at the top of the third cavity; the heat insulation mechanism comprising an electric push rod, the output end of the electric push rod being provided with a connecting plate, the bottom of the connecting plate being provided with a movable heat insulation plate, the movable heat insulation plate being provided with a through groove, and the movable heat insulation plate being longitudinally penetrated by a fixed column.

[0006] By adopting the above technical solution, the push and pull force of the electric push rod on the connecting plate is used to block or open the rectangular groove of the movable heat insulation plate, so as to protect the heat of the second cavity or facilitate the passage of the bonding silver wire. Under the premise of ensuring smooth threading, the drying efficiency is improved to a certain extent.

[0007] Furthermore, the serpentine tube and the exhaust elbow are both made of copper with high thermal conductivity. The serpentine tube is connected to the output end of the heat pump through a heat pipe, and the exhaust elbow is connected to the input end of the heat pump through a heat pipe.

[0008] By adopting the above technical solution, the copper serpentine pipe and the exhaust elbow have better heat conduction capabilities and can better achieve heat conduction.

[0009] Furthermore, the fan is connected to the air cavity, and the air cavity is connected to the third cavity through an air hole.

[0010] By adopting the above technical solution, after the fan is started, the cold air on the front side of the device body will be blown into the air cavity connected to it, and then blown into the third cavity through the air hole, thereby cooling the bonding silver wire that has a certain temperature after drying.

[0011] Furthermore, the electric push rod is fixedly connected to the connecting plate, and the connecting plate is fixedly connected to the movable heat insulation plate.

[0012] By adopting the above technical solution, when the electric push rod is started, it pushes or pulls the connecting plate fixedly connected to it to move, thereby causing the movable heat insulation plate fixedly connected to the connecting plate to be displaced.

[0013] Furthermore, the movable heat insulation plate is slidably connected to the fixed columns, and the fixed columns are provided in two groups, each group is provided with two fixed columns, and the two fixed columns are symmetrically arranged.

[0014] By adopting the above technical solution, when the movable heat insulation board is subjected to force, it will slide up and down along the fixed columns. The provision of two groups of fixed columns can assist the upward sliding process of the movable heat insulation board.

[0015] Furthermore, the through groove has an arched structure, and the arc diameter of the top of the through groove is larger than the diameter of the bonding silver wire.

[0016] By adopting the above technical solution, the arched structure of the through groove facilitates the passage of the cylindrical bonding silver wire.

[0017] Furthermore, the rectangular groove passes through the device body and the fixed heat insulation plate, and the size of the movable heat insulation plate is larger than the size of the rectangular groove.

[0018] By adopting the above technical solution, the rectangular groove runs through the entire device body and the fixed heat insulation plate inside it, making it convenient for the bonding silver wire to be straightened and reeled through the reeling and unreeling mechanism on the outside of the device body, and the operations of spraying annealing liquid, drying and cooling can be achieved during the reeling and unreeling process.

[0019] Furthermore, a screen is provided at the input end of the fan, and the surface of the screen is coated with a nano coating.

[0020] By adopting the above technical solution, the screen at the fan input end can intercept impurities in the air when the fan introduces cold air from the front side of the device body.

[0021] Furthermore, a protective plate is movably connected to the outer side of the exhaust elbow, and two protective plates are provided, and the two protective plates are symmetrically arranged.

[0022] By adopting the above technical solution, two protective plates can be used to protect both sides of the exhaust elbow, ensuring that the heat is conducted to the heat pump through the heat pipe as much as possible to be utilized.

[0023] Furthermore, the protective plate is a hollow rectangular structure, and the protective plate is made of heat-insulating material.

[0024] By adopting the above technical solution, the protective plate adopts a hollow rectangular structure, which is convenient for accommodating the exhaust elbow.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. The utility model is provided with a movable heat insulation plate, a connecting plate, an electric push rod and a heat pump. When the bonding silver wire is threaded, the electric push rod pushes the connecting plate downward, thereby blocking the movable heat insulation plate at the rectangular grooves on both sides of the second cavity, and sealing as much heat of the serpentine tube as possible in the second cavity, thereby improving the drying efficiency to a certain extent. At the same time, the setting of the heat pump can make full use of the environmental medium, such as the low-grade heat energy of the hot air generated during the startup of the device body, and the low-grade heat energy of the exhaust elbow connected to the heat pump. After consuming a small amount of reverse cycle net work, a large amount of heat supply is obtained to heat the serpentine tube, thereby improving the drying efficiency and the rationality of resource utilization in the entire drying process to a certain extent.

[0027] 2. The utility model sets a protective plate. When the exhaust elbow discharges gas with a certain temperature, the protective plate is used to protect the heat, so that the heat is directly transferred to the heat pump through heat conduction and utilized by the heat pump. There is no need to dissipate the heat in the air before being utilized by the heat pump. The heat conduction performance of the heat pipe is better than that of air. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the rear-view stereoscopic structure of the utility model;

[0030] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the utility model;

[0031] Figure 4 For this utility model Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0032] In the figure: 1. Device body; 2. First cavity; 3. Second cavity; 4. Third cavity; 5. Fixed insulation board; 6. Rectangular groove; 7. Insulation mechanism; 701. Movable insulation board; 702. Connecting plate; 703. Fixed column; 704. Electric push rod; 705. Through groove; 8. Fan; 9. Air cavity; 10. Air hole; 11. Exhaust elbow; 12. Protective plate; 13. Heat pipe; 14. Heat pump; 15. Serpentine tube; 16. Rewinding and unwinding mechanism; 17. Bonding silver wire; 18. Spraying mechanism. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] The following describes an embodiment of the present invention based on its overall structure.

[0035] Example 1:

[0036] A drying device for preparing bonding silver wire, such as Figures 1-4 As shown, it includes a device body 1, a fan 8, a heat pump 14, a reeling and unreeling mechanism 16, a bonding silver wire 17 and a spraying mechanism 18. The device body 1 is provided with a first cavity 2, a second cavity 3, a third cavity 4, a rectangular groove 6 and an air cavity 9. A fixed heat insulation board 5 is provided inside the device body 1, a heat insulation mechanism 7 is provided at the second cavity 3, a serpentine tube 15 is provided at the bottom of the second cavity 3, and an exhaust elbow 11 is provided at the top of the third cavity 4; the heat insulation mechanism 7 includes an electric push rod 704, a connecting plate 702 is provided at the output end of the electric push rod 704, a movable heat insulation board 701 is provided at the bottom of the connecting plate 702, and the movable heat insulation board 701 is provided at the bottom of the movable heat insulation board 701. 01 is provided with a through slot 705, and a fixed column 703 is longitudinally passed through the movable heat insulation plate 701. The push and pull of the connecting plate 702 by the electric push rod 704 is used to block or open the rectangular slot 6 of the movable heat insulation plate 701, so as to protect the heat of the second cavity 3 or facilitate the passing of the bonding silver wire 17. Under the premise of ensuring smooth threading, its drying efficiency is improved to a certain extent. At the same time, the heat pump 14 is used to make full use of the low-grade heat energy of the ambient medium and the exhaust elbow 11. Only a small amount of electricity is consumed to achieve the heating of the serpentine tube 15, and the rationality of resource utilization in the entire drying process is improved to a certain extent.

[0037] See Figure 3The serpentine tube 15 and the exhaust elbow 11 are both made of copper with high thermal conductivity. The serpentine tube 15 is connected to the output end of the heat pump 14 through the heat pipe 13, and the exhaust elbow 11 is connected to the input end of the heat pump 14 through the heat pipe 13. The copper serpentine tube 15 and the exhaust elbow 11 have good heat conduction capabilities and can better achieve heat conduction. When the low-grade heat energy on the exhaust elbow 11 is utilized by the input end of the heat pump 14, it consumes less electric energy and is converted into high-grade heat energy, which is utilized by the heat pipe 13 connected to the output end to achieve temperature increase inside the second cavity 3, so as to dry the bonding silver wire 17 sprayed with annealing liquid.

[0038] See Figure 3 The fan 8 is connected to the air cavity 9, and the air cavity 9 is connected to the third cavity 4 through the air hole 10. After the fan 8 is started, the cold air on the front side of the device body 1 will be blown into the air cavity 9 connected to it, and blown into the third cavity 4 through the air hole 10, thereby cooling the bonding silver wire 17 with a certain temperature after drying, ensuring that the packaged bonding silver wire 17 is at room temperature after winding. With the assistance of the exhaust elbow 11 and the heat pump 14, the heat can be reasonably and effectively utilized.

[0039] See Figure 3 、 Figure 4 The electric push rod 704 is fixedly connected to the connecting plate 702, and the connecting plate 702 is fixedly connected to the movable heat insulation plate 701. When the electric push rod 704 is started, it pushes or pulls the connecting plate 702 fixedly connected thereto to move, thereby causing the movable heat insulation plate 701 fixedly connected to the connecting plate 702 to be displaced. During the threading process of the bonding silver wire 17, the rectangular groove 6 can be opened to facilitate the threading of the bonding silver wire 17, and the rectangular groove 6 can be blocked during the drying process to prevent some heat from dissipating through the rectangular groove 6.

[0040] See Figure 3 、 Figure 4 The movable heat insulation board 701 is slidably connected to the fixed column 703. There are two groups of fixed columns 703, and each group of fixed columns 703 is provided with two fixed columns. The two fixed columns 703 are symmetrically arranged. When the movable heat insulation board 701 is subjected to force, it will slide up and down along the fixed columns 703. The setting of the two groups of fixed columns 703 can assist the movable heat insulation board 701 in the up and down sliding process, and the two symmetrically arranged fixed columns 703 can limit the two sides of the same movable heat insulation board 701 at the same time, making its sliding process more stable.

[0041] See Figure 3 、 Figure 4The through groove 705 has an arched structure, and the diameter of the arc at the top of the through groove 705 is larger than the diameter of the bonding silver wire 17. The arched structure of the through groove 705 facilitates the passage of the cylindrical bonding silver wire 17. The size of the arc portion at the top of the through groove 705 is set so that the bonding silver wire 17 will not contact the through groove 705 when passing through, thereby preventing the annealing liquid from being scraped off before drying.

[0042] See Figure 1 、 Figure 2 、 Figure 3 The rectangular groove 6 runs through the device body 1 and the fixed insulation plate 5. The size of the movable insulation plate 701 is larger than the size of the rectangular groove 6. The rectangular groove 6 runs through the entire device body 1 and the fixed insulation plate 5 inside it, which facilitates the straightening and rewinding of the bonding silver wire 17 through the rewinding and unwinding mechanism 16 on the outside of the device body 1. During the rewinding and unwinding process, the annealing liquid is sprayed, dried and cooled. The size difference between the movable insulation plate 701 and the rectangular groove 6 ensures that the movable insulation plate 701 can completely block the rectangular groove 6 except for the through groove 705, so as to seal the heat in the second cavity 3 as much as possible.

[0043] Example 2:

[0044] See Figure 1 、 Figure 3 A screen is provided at the input end of the fan 8, and the surface of the screen is coated with a nano-coating. The screen at the input end of the fan 8 can intercept impurities in the air when the fan 8 introduces cold air from the front side of the device body 1. The coating on the surface of the screen adopts a nano-coating, which makes the screen not easy to hide dirt and grime, and the intercepted impurities can easily slide along the coating surface.

[0045] See Figure 1 、 Figure 2 、 Figure 3 A protective plate 12 is movably connected to the outside of the exhaust elbow 11. There are two protective plates 12, and the two protective plates 12 are symmetrically arranged. The two protective plates 12 can provide protection on both sides of the exhaust elbow 11 to ensure that heat is conducted to the heat pump 14 through the heat pipe 13 as much as possible to be utilized. The protective plate 12 adopts a movably connected method to ensure that the protective plate 12 is removable so that the exhaust elbow 11 inside it can be inspected and maintained in time.

[0046] See Figure 3 The protective plate 12 has a hollow rectangular structure and is made of thermal insulation material. The protective plate 12 has a hollow rectangular structure, which is convenient for accommodating the exhaust elbow 11. The use of thermal insulation material can better preserve heat and prevent the heat of the exhaust elbow 11 from being consumed in the air.

[0047] The implementation principle of the present invention is as follows: first, the bonding silver wire 17 is passed through the rectangular groove 6, and passes through the first cavity 2, the second cavity 3 and the third cavity 4 through the reeling and winding mechanism 16, the device body 1 is started, and the electric push rod 704 pushes the connecting plate 702 to move downward, thereby generating a downward thrust on the movable heat insulation plate 701. With the assistance of the fixed columns 703 on both sides, the movable heat insulation plate 701 moves downward to block the rectangular groove 6, and the through groove 705 facilitates the passage of the bonding silver wire 17; secondly, the reeling and winding mechanism 16 continuously drives the bonding silver wire 17 to move forward and wind it, starts the spraying mechanism 18 to spray the annealing liquid, and starts the heat pump 14, which consumes a small amount of electrical energy itself and extracts 4-7 times the electrical energy from the environmental medium, such as water, air, soil, etc., and raises the temperature to heat the serpentine tube 15, thereby keeping the second cavity 3 at a suitable drying temperature, and drying the bonding silver wire 17 after being sprayed with annealing liquid when it passes through. After drying, the movable heat insulation plate 701 prevents heat from escaping from the rectangular groove 6 as much as possible; then, the started fan 8 filters the cold air from the front side through the screen at the input end, blows it into the air cavity 9, and then blows it evenly to the dried bonding silver wire 17 through the air hole 10, so that it is cooled by air cooling. When the cold air blows over the heated bonding silver wire 17, it becomes hot air, the density decreases and rises, and the heat leaked from the through groove 705 also heats the air and causes it to rise. When passing through the curved exhaust elbow 11, because the copper exhaust elbow 11 has better thermal conductivity than air, when the hot air passes through, the heat will be conducted by the air to the heat pipe 13 and directly guided to the heat pump 14 for utilization. After utilizing the heat transferred by the heat pipe 13 and the heat of the ambient medium, the heat pump 14 continues to heat the serpentine tube 15 to maintain the temperature in the second cavity 3 for drying; finally, the bonding silver wire 17 that has been dried and cooled is smoothly wound up by the winding part of the winding and unwinding mechanism 16.

[0048] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0049] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A drying device for preparing bonding silver wire, characterized by: The invention comprises a device body (1), a fan (8), a heat pump (14), a reeling and unreeling mechanism (16), a bonding silver wire (17) and a spraying mechanism (18); the device body (1) is provided with a first cavity (2), a second cavity (3), a third cavity (4), a rectangular groove (6) and an air cavity (9); a fixed heat insulation board (5) is provided inside the device body (1); a heat insulation mechanism (7) is provided at the second cavity (3); a serpentine tube (15) is provided at the lower part of the second cavity (3); and an exhaust elbow (11) is provided at the top of the third cavity (4); The heat insulation mechanism (7) includes an electric push rod (704), the output end of the electric push rod (704) is provided with a connecting plate (702), the bottom of the connecting plate (702) is provided with a movable heat insulation plate (701), a through groove (705) is provided on the movable heat insulation plate (701), and a fixed column (703) is longitudinally penetrated through the movable heat insulation plate (701).

2. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The serpentine tube (15) and the exhaust elbow (11) are both made of copper with high thermal conductivity. The serpentine tube (15) is connected to the output end of the heat pump (14) through the heat pipe (13), and the exhaust elbow (11) is connected to the input end of the heat pump (14) through the heat pipe (13).

3. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The fan (8) is connected to the air cavity (9), and the air cavity (9) is connected to the third cavity (4) through the air hole (10).

4. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The electric push rod (704) is fixedly connected to the connecting plate (702), and the connecting plate (702) is fixedly connected to the movable heat insulation plate (701).

5. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The movable heat insulation plate (701) is slidably connected to the fixed columns (703). The fixed columns (703) are provided in two groups, each group of the fixed columns (703) is provided with two fixed columns, and the two fixed columns (703) are symmetrically arranged.

6. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The through groove (705) has an arched structure, and the arc diameter at the top of the through groove (705) is larger than the diameter of the bonding silver wire (17).

7. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The rectangular groove (6) passes through the device body (1) and the fixed heat insulation plate (5), and the size of the movable heat insulation plate (701) is larger than the size of the rectangular groove (6).

8. The drying device for preparing bonding silver wire according to claim 1, characterized in that: The input end of the fan (8) is provided with a screen, and the surface of the screen is coated with a nano coating.

9. The drying device for preparing bonding silver wire according to claim 1, characterized in that: A protective plate (12) is movably connected to the outer side of the exhaust elbow (11), and two protective plates (12) are provided, and the two protective plates (12) are symmetrically arranged.

10. The drying device for preparing bonding silver wire according to claim 9, characterized in that: The protective plate (12) is a hollow rectangular structure, and the protective plate (12) is made of heat-insulating material.

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