Solder ball waste recovery device

Abstract

The utility model discloses a solder ball waste recovery device, which comprises a base, a platform plate and a turntable, the platform plate is rotationally matched with a rotary disc of a disc-shaped structure, at least six sets of casting molds are arranged on the rotary disc in a circumferential array mode, a discharging station, a hot melting station, a cooling station and a piece ejecting station are arranged on four sets of casting molds in the anticlockwise direction, a main body of the discharging station is a discharging pipe, and the main body of the hot melting station is a hot melting station. A hot air gun is fixed on the platform plate at the hot melting station through an air gun support, a cooling fan is fixed on the platform plate at the cooling station through a fan support, and an air outlet of the cooling fan is right opposite to the casting mold close to the cooling fan. A cylinder capable of pushing the base of the casting mold close to the cylinder to move upwards is arranged on the base at the ejection station, and an intermittent shifting mechanism is fixed on the base and drives the turntable to rotate intermittently; the tin ball waste material conveying device has the beneficial effect that tin ball waste materials can be automatically converted into tin blocks convenient to convey.

Description

Technical Field

[0001] The utility model belongs to the technical field of post-processing of solder balls, and particularly relates to a solder ball waste recovery device. Background Art

[0002] As shown in the patent document with publication number CN205011852U, solder balls are metal spheres with very small particle size and mainly composed of tin. Solder balls are mainly used in the fields of electroplating and circuit board chip welding.

[0003] In the solder ball production process, it is inevitable that some substandard waste materials will be produced. For example, there are impurities in the ingredients, the particle size does not meet the standard, the solder balls are severely bonded, and the tinning is difficult. These waste materials cannot be directly used for electroplating and circuit board welding, and they need to be treated as waste. However, the particle size of the solder balls is very small. When they are sent to the recycling plant, they are very easy to spill out of the package and cause leakage. The leaked solder balls are almost inconvenient to find due to their particle size. Therefore, the existing technology requires a device that can recycle the solder ball waste after production. Utility Model Content

[0004] The utility model aims to provide a solder ball waste recycling device to solve the technical problem of inconvenient transportation of solder ball waste during recycling in the above-mentioned background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A tin ball waste recycling device comprises: a base, a platform plate, and a turntable; the base and the platform plate are both horizontal plate-shaped structures, the platform plate is supported and fixed above the base by a pillar, a circular hole is arranged in the center of the platform plate, a turntable with a disc-shaped structure is rotatably matched in the hole, at least six groups of casting molds are arranged in a circular array on the turntable, four groups of casting molds are counterclockwise respectively provided with a material discharge station, a hot melt station, a cooling station, and a top piece station, wherein the main body of the material discharge station is a material discharge pipe, the pipe mouth of the material discharge pipe is located directly above the adjacent casting mold, a hot air gun is fixed on the platform plate by an air gun bracket at the hot melt station, and the air outlet of the hot air gun is located directly above the adjacent casting mold, At the cooling station, a cooling fan is fixed on the platform plate by means of a fan bracket, and the air outlet of the cooling fan is facing the adjacent casting mold; the main body of the casting mold is a fixed cylinder embedded in and fixed on the turntable, on which a cylindrical melting cup is concentrically fixed, the inner ring piston of the melting cup is matched with a piston disk with a disc structure, and a sliding rod is connected under the piston disk. After the sliding rod penetrates the fixed cylinder and the melting cup, a chassis is provided at the end; a spring made of a compression spring is provided between the chassis and the fixed cylinder and embedded on the sliding rod, and a cylinder that can push the adjacent chassis to move upward is provided on the base at the top piece station, and an intermittent toggle mechanism is fixed on the base, and the intermittent toggle mechanism drives the turntable to rotate intermittently.

[0007] Furthermore: The intermittent dialing mechanism includes: a motor, a rotating shaft, a rotating arm, a connecting shaft, a fork arm, a track arm, a limiting notch, and a positioning wheel; wherein the motor is fixed on the base, and an output shaft of the motor is concentrically fixed with a rotating shaft, the rotating shaft penetrates through the center of the turntable and is fixed at one end of the rotating arm, the other end of the rotating arm is rotatably fitted with a connecting shaft in a vertical rod structure, a fork arm is fixed on the connecting shaft, and fork teeth with a fork distance consistent with the outer diameter of the fixed cylinder are provided at one end of the fork arm away from the connecting shaft; a track arm is fixed at the upper end of the connecting shaft, the projections of the track arm and the fork arm on the horizontal plane are on a straight line, a notch-shaped through hole is provided at a position of the track arm away from the connecting shaft to form a limiting notch, a positioning wheel is provided in the limiting notch, the axis of the positioning wheel is vertical, and the positioning wheel is installed on a positioning bracket in an arch structure, and the positioning bracket is fixed on the platform plate below.

[0008] Furthermore: In order to reduce the collision noise between the cylinder and the chassis when the cylinder pushes the chassis upward, the cylinder is fixed on the base by a cylinder frame, and a head in a plate structure made of rubber is provided at the end of the telescopic end of the cylinder.

[0009] Furthermore: In order to prevent the molten tin liquid from leaking, a high-temperature piston ring is provided on the outer ring of the piston disc (the structure and material of the high-temperature piston ring can refer to the piston ring on an automobile engine).

[0010] Furthermore: In order to prevent the track arm from limiting the rotation of the casting mold, the height of the connecting shaft is greater than the height of the casting mold, and the horizontal position of the lowest point of the track arm is above all the casting molds.

[0011] Furthermore: In order to improve the smoothness of the relative movement between the limiting notch and the positioning wheel, the positioning wheel is rotatably fitted with the positioning bracket by a shaft rod and a bearing.

[0012] Furthermore: In order to avoid the rotating shaft affecting the rotation of the turntable, an annular gap is provided at the intersection of the turntable and the rotating shaft, so that the turntable and the rotating shaft are in a non-contact relationship.

[0013] Furthermore: In order to prevent the turntable from continuing to rotate due to inertia after the intermittent dialing mechanism drives the turntable, resulting in the casting mold on it being separated from the working position, the outer ring of the turntable and the platform plate are rotatably fitted by a damping bearing.

[0014] In summary, the present utility model has the following beneficial effects:

[0015] ①It can automatically convert the tin ball waste into tin blocks that are easy to transport: through the establishment of an intermittent toggle mechanism, a feeding station, a hot melt station, a cooling station, and a top piece station; the intermittent toggle mechanism drives the turntable to rotate intermittently, and the tin ball waste enters the melting cup of the casting mold below the feeding tube from the feeding tube, and then the casting mold follows the turntable to rotate to the bottom of the hot air gun. The hot air gun is powered on to melt all the tin ball waste in the melting cup into tin liquid, and then the tin liquid re-solidifies and plasticizes into tin blocks, and then the tin blocks are taken out, thereby automatically converting the fine tin ball waste into tin blocks that are easy to transport and recycle, completing the initial recovery of the tin ball waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the intermittent toggle mechanism in the utility model;

[0018] Figure 3 It is a schematic diagram of the bottom structure in the utility model;

[0019] Figure 4 It is a schematic diagram of the placement structure of each workstation of the utility model;

[0020] Figure 5 yes Figure 4 Schematic diagram of the structure of the middle BB section;

[0021] Figure 6 yes Figure 5 A magnified view of the structure in the middle;

[0022] Figure 7 This is a schematic diagram of the working principle of the intermittent toggle mechanism in the utility model;

[0023] In the figure, 1. base; 2. platform plate; 3. turntable; 4. unloading station; 5. hot melt station; 6. cooling station; 7. ejector station; 8. casting mold; 9. intermittent toggle mechanism; 41. unloading pipe; 51. air gun bracket; 52. hot air gun; 61. fan bracket; 62. cooling fan; 71. cylinder frame; 72. cylinder; 73. ejector; 81. fixing cylinder; 82. casting cup; 83. piston disc; 84. slide rod; 85. chassis; 86. spring; 87. high-temperature piston ring; 91. motor; 92. rotating shaft; 93. rotating arm; 94. connecting shaft; 95. fork arm; 96. track arm; 97. limiting notch; 98. positioning wheel; 99. positioning bracket. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] See also Figures 1-7, the present utility model provides a technical solution:

[0026] A tin ball waste recycling device, comprising: a base 1, a platform plate 2, and a turntable 3; both the base 1 and the platform plate 2 are horizontal plate-like structures. The platform plate 2 is supported and fixed above the base 1 by columns. A circular hole is provided at the center of the platform plate 2, and a turntable 3 with a disc-shaped structure is rotatably fitted in the hole. At least six groups of casting molds 8 are circumferentially arranged on the turntable. Four of the casting molds 8 are respectively provided with a feeding station 4, a hot melting station 5, a cooling station 6, and a top part station 7 in the counterclockwise direction. The main body of the feeding station 4 is a feeding pipe 41, and the pipe orifice of the feeding pipe 41 is located directly above its adjacent casting mold 8. At the hot melting station 5, a hot air gun 52 is fixed on the platform plate 2 by a hot air gun bracket 51, and the air outlet of the hot air gun 52 is located directly above its adjacent casting mold 8. At the cooling station 6, a cooling fan 62 is fixed on the platform plate 2 by a fan bracket 61, and the air outlet of the cooling fan 62 is directly facing its adjacent casting mold 8; the main body of the casting mold 8 is a fixed cylinder 81 embedded and fixed on the turntable 3. A melting cup 82 with a cylindrical structure is concentrically fixed on the fixed cylinder 81. An inner ring of the melting cup 82 is piston-fitted with a piston disc 83 having a disc-shaped structure. A slide bar 84 is connected below the piston disc 83. After the slide bar 84 penetrates through the fixed cylinder 81 and the melting cup 82, a chassis 85 is provided at the end; a spring 86 made of a compression spring is provided between the chassis 85 and the fixed cylinder 81 and is externally fitted on the slide bar 84. On the base 1 at the top part station 7, there is a cylinder 72 that can push its adjacent chassis 85 upward. An intermittent dialing mechanism 9 is fixed on the base 1, and the intermittent dialing mechanism 9 drives the turntable 3 to rotate intermittently.

[0027] The intermittent dialing mechanism 9 includes: a motor 91, a rotating shaft 92, a rotating arm 93, a connecting shaft 94, a fork arm 95, a track arm 96, a limiting notch 97, and a positioning wheel 98; wherein the motor 91 is fixed on the base 1, and an output shaft of the motor 91 is concentrically fixed with a rotating shaft 92. The rotating shaft 92 penetrates through the center of the turntable 3 and is fixed at one end of the rotating arm 93. The other end of the rotating arm 93 is rotatably fitted with a connecting shaft 94 having a vertical rod structure. A fork arm 95 is fixed on the connecting shaft 94, and fork teeth with a fork distance equal to the outer diameter of the fixed cylinder 81 are provided at one end of the fork arm 95 away from the connecting shaft 94; a track arm 96 is fixed at the upper end of the connecting shaft 94. The projections of the track arm 96 and the fork arm 95 on the horizontal plane are on the same straight line. At a position of the track arm 96 away from the connecting shaft 94, a through hole in the shape of a notch forms a limiting notch 97. A positioning wheel 98 is provided in the limiting notch 97. The axis of the positioning wheel 98 is vertical, and the positioning wheel 98 is installed on an arched positioning bracket 99, and the positioning bracket 99 is fixed below on the platform plate 2.

[0028] In order to reduce the collision noise between the cylinder 72 and the chassis 85 when the cylinder 72 pushes the chassis 85 upward, the cylinder 72 is fixed to the base 1 by a cylinder frame 71, and a rubber plate-shaped head 73 is provided at the end of the telescopic end of the cylinder 72.

[0029] In order to prevent the molten tin from leaking, the outer ring of the piston disc 83 is provided with a high-temperature piston ring 87 (the structure and material of the high-temperature piston ring 87 can refer to the piston ring on the automobile engine).

[0030] In order to prevent the track arm 96 from limiting the rotation of the casting mold 8 , the height of the connecting shaft 94 is greater than the height of the casting mold 8 , and the horizontal position of the lowest point of the track arm 96 is located above all the casting molds 8 .

[0031] In order to improve the relative movement smoothness between the limiting notch 97 and the positioning wheel 98 , the positioning wheel 98 adopts a shaft and a bearing and a positioning bracket 99 to rotate together.

[0032] In order to prevent the rotating shaft 92 from affecting the rotation of the rotating disk 3 , an annular gap is provided at the intersection of the rotating shaft 92 on the rotating disk 3 , so that there is a non-contact relationship between the rotating disk 3 and the rotating shaft 92 .

[0033] In order to prevent the turntable 3 from continuing to rotate due to inertia after the intermittent toggle mechanism 9 drives the turntable 3, causing the casting mold 8 thereon to leave the working position, a damping bearing is used between the outer ring of the turntable 3 and the platform plate 2 for rotational cooperation.

[0034] Brief description of the usage process:

[0035] When in use, the motor 91 is started to rotate, and the motor 91 drives the rotating arm 93 to rotate through the rotating shaft 92, and the other end of the rotating arm 93 drives the connecting shaft 94 to rotate accordingly. Because the connecting shaft 94 and the rotating arm 93 are rotationally matched, and the connecting shaft 94 is fixed with a fork arm 95 and a track arm 96 that are linearly matched, and the limiting notch 97 on the track arm 96 is limited by the positioning wheel, so Figure 7 As shown, the fork tine on the fork arm 95 will move the casting mold 8 at the hot melt station 5 (the fork tine of the fork arm 95 is forked on both sides of the fixed cylinder 81, and the fixed cylinder 81 and the casting mold 8 located therein are pushed to move under the rotation of the fork arm 95) toward the cooling station 6. When the casting mold 8 at the hot melt station 5 reaches the cooling station 6, the fork tine of the fork arm 95 will be separated from the casting mold 8, and then reset to move the new casting mold 8 at the hot melt station 5. When the fork tine of the fork arm 95 is reset from the cooling station 6 to the hot melt station 5, the turntable 3 maintains a relative position unchanged under the influence of the damping bearing without power. The time that the turntable 3 maintains a relative position unchanged is the working time of each station, which is defined as the stagnation period T1. The following processes can be carried out simultaneously during the stagnation period T1:

[0036] Process 1, blanking: When the casting mold 8 rotates with the turntable 3 to the lower part of the blanking pipe 41, the blanking pipe 41 is connected with a solenoid valve, and the solenoid valve is connected with a loading mechanism for tin ball waste, such as a conveying pipeline, a hopper, a silo, etc. (the loading mechanism and the solenoid valve are external mechanisms, so their working principles and structures are omitted). During the stagnation period T1, the solenoid valve of the blanking pipe 41 is opened, and the tin ball waste enters the melting cup 82 of the casting mold 8 below the blanking pipe 41. When the tin ball waste in the casting cup 82 reaches a certain amount, the solenoid valve is automatically closed.

[0037] Process 2, melting: When the casting mold 8 rotates with the turntable 3 to the lower part of the hot air gun 52, during the stagnation period T1, the hot air gun 52 is powered on to work and melts all the tin ball waste in the melting cup 82 into tin liquid.

[0038] Process 3, re-solidifying and plasticizing: When the casting mold 8 rotates with the turntable 3 to the cooling station 6, during the stagnation period T1, the cooling fan 62 is powered on and made to work. The cooling fan 62 cools the tin liquid in the melting cup 82 during the stagnation period T1, making it turn back into a solid state and plasticizing it into a columnar tin block structure that fits the inner contour of the melting cup 82.

[0039] Process 4, pushing and collecting: When the casting mold 8 rotates with the turntable 3 to the ejecting station 7, during the stagnation period T1, the cylinder 72 is started to extend. The telescopic end of the cylinder 72 pushes the chassis 85 upward through the ejector head 73, and the chassis 85 pushes the piston disk 83 upward through the slide rod 84, pushing out the columnar tin block in the melting cup 82. The columnar tin block pushed out is picked up by the robot on the production line (the robot is an external mechanism) and stored. After the pushing is completed, the cylinder 72 resets, and the piston disk 83 and the chassis 85 are reset under the stretching elastic force of the spring 86, waiting for the next operation of Process 1.

[0040] With the intermittent rotation of the turntable 3, the turntable 3 drives the casting mold 8 thereon to successively go through Process 1, Process 2, Process 3, and Process 4 and cycle, thereby automatically converting the fine tin ball waste into tin blocks that are convenient for transportation and recycling and processing, completing the preliminary recycling operation of the tin ball waste.

[0041] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A solder ball waste recovery device, comprising: A base (1), a platform plate (2), and a turntable (3); characterized in that: the base (1) and the platform plate (2) are both horizontal plate-like structures, the platform plate (2) is supported and fixed on the top of the base (1) by a support, a circular hole is provided in the center of the platform plate (2), a turntable (3) with a disc-like structure is rotatably fitted in the hole, and at least six groups of casting molds (8) are arranged in a circular array on the turntable, among which four groups of casting molds (8) are respectively provided with a material unloading station (4), a hot melt station (5) and a heat treatment station (6) in a counterclockwise direction. The main body of the material discharging station (4) is a material discharging pipe (41), the pipe mouth of the material discharging pipe (41) is located just above the casting mold (8) adjacent to it. At the hot melting station (5), a hot air gun (52) is fixed on the platform plate (2) by using a wind gun bracket (51), and the air outlet of the hot air gun (52) is located just above the casting mold (8) adjacent to it. At the cooling station (6), a fan bracket (61) is fixed on the platform plate (2) by using a fan bracket (61). A cooling fan (62) is fixed on the plate (2), and the air outlet of the cooling fan (62) is facing the casting mold (8) adjacent thereto; the main body of the casting mold (8) is a fixed cylinder (81) embedded and fixed on the rotating disk (3), and a cylindrical melting cup (82) is coaxially fixed on the fixed cylinder (81), and the inner ring piston of the melting cup (82) is matched with a piston disk (83) with a disc structure, and a slide rod (84) is connected below the piston disk (83), and the slide rod (84) ) penetrates the fixed cylinder (81) and the casting cup (82), and a chassis (85) is provided at the end thereof; a spring (86) made of a compression spring is provided between the chassis (85) and the fixed cylinder (81) and is embedded on the sliding rod (84); a cylinder (72) is provided on the base (1) at the top piece station (7) to push the chassis (85) adjacent thereto to move upward, and an intermittent toggle mechanism (9) is fixed on the base (1), and the intermittent toggle mechanism (9) drives the turntable (3) to rotate intermittently.

2. The solder ball waste recovery device according to claim 1, characterized in that: The intermittent toggle mechanism (9) comprises: a motor (91), a rotating shaft (92), a rotating arm (93), a connecting shaft (94), a fork arm (95), a track arm (96), a limiting notch (97), and a positioning wheel (98); wherein the motor (91) is fixed on the base (1); a rotating shaft (92) is coaxially fixed to the output shaft of the motor (91); the rotating shaft (92) penetrates the center of the rotating disk (3) and is fixed to one end of the rotating arm (93); the other end of the rotating arm (93) is rotatably matched with a connecting shaft (94) of a vertical rod structure; a fork arm (95) is fixed on the connecting shaft (94); the fork arm (95) is remotely connected to the rotating disk (3); A fork tooth having a fork distance consistent with the outer diameter of the fixing tube (81) is provided at one end away from the connecting shaft (94); a track arm (96) is fixed to the upper end of the connecting shaft (94); the projections of the track arm (96) and the fork arm (95) on a horizontal plane are on a straight line; a position of the track arm (96) away from the connecting shaft (94) is provided with a slot-shaped through hole to form a limiting slot (97); a positioning wheel (98) is provided in the limiting slot (97); the axis of the positioning wheel (98) is vertical, and the positioning wheel (98) is mounted on a positioning bracket (99) of an arched structure; the lower part of the positioning bracket (99) is fixed to the platform plate (2).

3. The solder ball waste recovery device according to claim 1, characterized in that: The cylinder (72) is fixed on the base (1) by means of a cylinder frame (71), and a top head (73) of a plate-like structure made of rubber is provided at the end of the telescopic end of the cylinder (72).

4. The solder ball waste recovery device according to claim 1, characterized in that: The outer ring of the piston disc (83) is provided with a high-temperature piston ring (87).

5. The solder ball waste recovery device according to claim 2, characterized in that: The height of the connecting shaft (94) is greater than the height of the casting mold (8), and the horizontal position of the lowest point of the track arm (96) is located above all the casting molds (8).

6. The solder ball waste recovery device according to claim 2, characterized in that: The positioning wheel (98) is rotatably matched with a shaft rod, a bearing and a positioning bracket (99).

7. The solder ball waste recovery device according to claim 2, characterized in that: The rotating disk (3) is provided with an annular gap at the intersection of the rotating shaft (92), so that the rotating disk (3) and the rotating shaft (92) are in a non-contact relationship.

8. The solder ball waste recovery device according to claim 1, characterized in that: The outer ring of the turntable (3) and the platform plate (2) are rotationally matched using a damping bearing.

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