A solder ball jetting apparatus and a solder ball jetting production line

Abstract

The application relates to the technical field of soldering technology, and discloses a soldering equipment and a soldering production line. The detection equipment comprises a supporting seat, a first motor, a limiting clamp for limiting and overturning the soldering piece, and a pneumatic clamp for fastening the soldering piece. The supporting seat is connected with a screening equipment for screening the soldering piece at the end along the conveying direction of the conveying equipment. The bottom of the screening equipment is connected with a rotating column and a poking piece for material poking. The soldering equipment and the soldering production line are started by cooperating the screening equipment with a sensor to change the position of the blocking rod, so that the screening purpose is achieved. The cooperation of the rotating column and the poking piece accelerates the screening of the material. When the screening equipment is found to be damaged, the screening equipment can be removed from the supporting seat as a whole and replaced by the replacement means, so that the replacement process of the screening equipment is simplified, and the required maintenance time is shortened.

Description

Technical Field

[0001] This invention relates to the field of solder ball welding technology, specifically to a solder ball welding equipment and a solder ball welding production line. Background Technology

[0002] With the increasing integration of electronic products today, traditional soldering iron processes are becoming less and less suitable. Laser soldering, as a new technology, has emerged. Within the field of laser soldering, laser solder ball welding is the most technically challenging but also the most efficient. Laser soldering mainly includes three areas: laser solder wire welding, laser solder paste welding, and laser solder ball welding. Due to factors such as technical difficulty and cost, laser solder ball welding currently has a lower market share than the other two.

[0003] Patent CN114654037A discloses a solder ball welding equipment and a solder ball welding production line. The solder ball welding equipment includes at least one first welding machine, at least one second welding machine, an inspection machine, and a transmission line. The second welding machine is spaced apart from the first welding machine. The inspection machine includes an inspection base, a first moving component, an inspection component, and a flipping component. The first moving component is located on the inspection base, and the inspection component and the flipping component are spaced apart from the first moving component, so that the first moving component drives the inspection component and the flipping component to move. The transmission line is sequentially connected to the first welding machine, the inspection base, and the second welding machine, with the inspection component and the flipping component located on the side of the transmission line facing away from the inspection base. The transmission line is used to move the workpiece from the first welding machine, the inspection base, and the second welding machine. While this technical solution simplifies the structure of the solder ball welding equipment to some extent and addresses the issue of increasingly large equipment size by placing an inspection machine between the two welding machines, this technical solution still has the following shortcomings: 1. The instruction manual states that when sorting unqualified materials by setting up the first moving component and the XYZ three-axis transmission module, more precise identification and sensing equipment is required; 2. When repairing the inspection machine, the parameters of the transmission component need to be readjusted, resulting in a long repair time. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a solder ball welding equipment and a solder ball welding production line that can further simplify the equipment structure, and has advantages such as more convenient maintenance of screening equipment, thus solving the above-mentioned technical problems.

[0005] The technical solution adopted by the present invention is: a solder ball spraying welding equipment, including a welding chamber, a testing device and multiple conveying devices that pass through the welding chamber. Multiple sliding blocks are equidistantly connected on a sliding seat inside the welding chamber. A lifting device is connected to the top of the sliding blocks. A moving block is connected to the top of the lifting device. A storage chamber for storing solder balls and a nozzle are connected to the bottom of the moving block. A second motor is connected to one side of the storage chamber. A ball storage chamber is set inside the storage chamber. A stirring paddle to prevent solder balls from clogging is connected to the outlet of the ball storage chamber.

[0006] The testing equipment includes a support base, a first motor, a limiting bracket for limiting and flipping the welded parts, and a pneumatic clamp for fastening the welded parts. The support base is connected to a screening device for screening the welded parts at its end along the conveying direction of the conveying equipment. The bottom of the screening device is connected to a rotating column and a paddle for feeding materials.

[0007] A further technical solution is as follows: the first motor is located on the side of the support base and in the area above the conveying equipment; the limiting card seat is U-shaped; the non-notch end of the limiting card seat is connected to the output shaft of the first motor; and the extended end of the notch of the limiting card seat is provided with a pneumatic clamp with the opposite direction of movement.

[0008] A further technical solution is that there is a gap between the limiting card seat and the surface of the conveying equipment, and the first motor rotates at a single angle of 180°.

[0009] Further: The second motor is fixedly installed on one side of the storage compartment, and a stirring paddle is rotatably connected to the conical outlet of the ball storage compartment. The stirring paddle is spirally arranged and rotatably connected to the output end of the second motor.

[0010] Further: The screening equipment includes an electromagnet, a sliding seat, a blocking rod, a spring, and a magnetic column. The electromagnet is fixedly installed at equal intervals on the inner wall of the support base. The sliding seat is connected to the inner wall of the support base below the electromagnet. The inner wall of the sliding seat is connected to the spring. The blocking rod is fixedly installed at the end of the spring. The magnetic column is connected to the top surface of the blocking rod at the output end of the corresponding electromagnet.

[0011] Furthermore: the blocking rod is slidably connected to the inner wall of the sliding seat, and the area of ​​the blocking rod above the conveying equipment is inclined along the conveying direction of the conveying equipment. The magnetic force generated by the electromagnet is the same as the magnetic force generated by the upward-facing end face of the magnetic column. The length of the spring should ensure that there is a gap between the magnetic column and the bottom surface of the electromagnet. At the same time, after the spring is stretched, the bottom surface of the blocking rod and the bottom surface of the sliding seat come into contact.

[0012] Furthermore, multiple rotating columns are fixedly installed on the bottom surface of the blocking rod, and a lever is rotatably connected to the outer end of each rotating column.

[0013] Furthermore: the first rotating column is located at the middle of the bottom surface of the blocking rod, and the remaining rotating columns are arranged sequentially in the direction of conveying of the conveying equipment. The bottom surface of the rotating column has an annular protrusion with an elliptical top surface. There is a height difference between the two endpoints on the major axis of the ellipse, and the height of the endpoint facing the limiting seat is lower than the height of the other endpoint. The major axis of the elliptical surface of the rotating column is perpendicular to the blocking rod. The paddle is rotatably connected to the outer end of the rotating column, and the bottom surface of the paddle is in contact with the elliptical surface of the rotating column.

[0014] Furthermore: the length of the lever should ensure that it does not come into contact with the blocking rod, and the lowest point of the lever should come into contact with the surface of the conveying equipment when the spring is extended to its longest length. When the lever is stationary, the mass at the lowest point of the elliptical surface of the rotating column is heavier than the mass on the other side of the lever.

[0015] Another related technical solution is: the solder ball welding production line includes the aforementioned solder ball welding equipment, and each welding chamber is equipped with testing equipment at the next work station.

[0016] Due to the adoption of the above technical solutions, the solder ball welding equipment and solder ball welding production line of the present invention have the following beneficial effects:

[0017] 1. This invention uses a screening device in conjunction with a sensor to activate an electromagnet, thereby changing the position of a blocking rod to achieve the screening purpose. During screening, the material screening is accelerated by the cooperation of a rotating column and a lever. When damage to the screening device is found, it can be replaced by removing the entire device from the support base, simplifying the replacement process and shortening the maintenance time.

[0018] 2. Because the present invention is equipped with a stirring paddle, the diameter of the solder balls is usually smaller than the diameter of the ball storage chamber. However, when multiple solder balls fall freely, they may stack up, which may lead to blockage. At this time, the second motor is started. The rotation of the second motor generates a torsional driving force on the stirring paddle, which causes the spiral stirring paddle to rotate, thereby avoiding the blockage caused by multiple solder balls. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the interior of the welding chamber of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure testing equipment of the present invention;

[0022] Figure 4 This is a three-dimensional schematic diagram of the screening equipment of the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of the rotating column of the present invention;

[0024] Figure 6 This is a full sectional schematic diagram of the sphere storage compartment of the present invention;

[0025] Figure 7 for Figure 6 A magnified view of part A.

[0026] In the picture:

[0027] 1—Welding chamber, 2—Detection equipment, 201—Support base, 202—First motor, 203—Limiting seat, 204—Pneumatic clamp, 3—Conveying equipment, 4—Sliding block, 5—Lifting equipment, 6—Moving block, 7—Storage chamber, 8—Second motor, 9—Ball storage chamber, 10—Agitator, 11—Screening equipment, 1101—Electromagnet, 1102—Sliding seat, 1103—Blocking rod, 1104—Spring, 1105—Magnetic column, 12—Rotating column, 13—Pulley. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0029] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention; in addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example 1

[0031] A solder ball spraying equipment, such as Figure 1 As shown, it includes a welding chamber 1, an inspection device 2, and multiple conveying devices 3 that pass through the welding chamber 1;

[0032] like Figure 2 As shown, multiple sliding blocks 4 are equidistantly connected to the sliding seat inside the welding chamber 1. A lifting device 5 is connected to the top of the sliding block 4. A moving block 6 is connected to the top of the lifting device 5. A storage chamber 7 for storing solder balls and a nozzle are connected to the bottom of the moving block 6. A second motor 8 is connected to one side of the storage chamber 7. A ball storage chamber 9 is set inside the storage chamber 7. A stirring paddle 10 to prevent the solder balls from clogging is connected to the outlet of the ball storage chamber 9.

[0033] like Figure 6 , Figure 7 As shown, the second motor 8 is fixedly installed on one side of the storage chamber 7. The ball storage chamber 9 is rotatably connected to the conical outlet of the ball storage chamber 9. The ball storage chamber 9 is rotatably connected to the output end of the second motor 8. When conveying solder balls to the nozzle, since the diameter of the solder balls is usually smaller than the opening diameter of the ball storage chamber 9, multiple solder balls will stack up when they fall freely, which will lead to blockage. At this time, the second motor 8 is started. Under the rotation of the second motor 8, a torsional driving force is generated on the ball storage chamber 10, which will cause the spiral ball storage chamber 10 to rotate, thereby avoiding the blockage of multiple solder balls.

[0034] like Figure 3 As shown, the detection device 2 includes a support base 201, a first motor 202, a limiting clamp 203 for limiting and flipping the welded parts, and a pneumatic clamp 204 for fastening the welded parts. The support base 201 is connected to a screening device 11 for screening the welded parts at its end along the conveying direction of the conveying device 3. The screening device 11 includes an electromagnet 1101, a sliding seat 1102, a blocking rod 1103, a spring 1104, and a magnetic column 1105. The bottom of the screening device 11 is connected to a rotating column 12 and a paddle 13 for feeding materials. The top of the detection device 2 is equipped with a CCD image sensor corresponding to the screening device 11 to detect the weld points.

[0035] The first motor 202 is located on the side of the support base 201 and above the conveying device 3. The limiting bracket 203 is U-shaped and connected to the output shaft of the first motor 202. When the conveying device 3 transports the material to the limiting bracket 203, the material will stop at the edge of the recess of the limiting bracket 203 and directly below the CCD image sensor. The material is clamped by a pneumatic clamp 204 with the opposite direction of movement at the extended end of the notch of the limiting bracket 203. The material is detected and then the signal is transmitted to the electromagnet 1101. After the detection is completed, the output shaft of the first motor 202 drives the non-notch end of the limiting bracket 203 to rotate 180°, so that the material is flipped. Then, the material is screened by the signal emitted by the CCD image sensor to the screening device 11.

[0036] like Figure 4 As shown, the electromagnets 1101 are equidistantly arranged on the inner wall of the support base 201. A sliding seat 1102 is connected to the inner wall of the support base 201 below the electromagnets 1101. A spring 1104 is connected to the inner wall of the sliding seat 1102. A blocking rod 1103 is fixedly installed at the end of the spring 1104. A magnetic column 1105 is connected to the top surface of the blocking rod 1103, corresponding to the output end of the electromagnet 1101. At the same time, the length of the spring 1104 should ensure that there is a gap between the magnetic column 1105 and the bottom surface of the electromagnet 1101. The electromagnets 1101 are not used under normal working conditions. When 1101 is not energized, spring 1104 is always in a compressed state. Then, the activation of electromagnet 1101 causes spring 1104 to extend and retract, thereby driving the blocking rod 1103 to move and adjust the up and down position of the blocking rod 1103. During a complete energization and de-energization process of electromagnet 1101, spring 1104 completes one full extension and retraction. The gap between magnetic column 1105 and electromagnet 1101 ensures that magnetic column 1105 does not collide with electromagnet 1101, avoiding damage to electromagnet 1101 from impact.

[0037] The blocking rod 1103 is slidably connected to the inner wall of the sliding seat 1102. When the sensor detects that the material is unqualified, the magnetic force generated by the electromagnet 1101 is activated and repelled by the magnetic force generated on the upper surface of the magnetic column 1105, thereby pushing the magnetic column 1105 downward. At this time, the spring 1104 is stretched, and the blocking rod 1103 falls. Since the area above the conveying device 3 is inclined along the conveying direction of the conveying device 3, it can ensure that the conveying device 3 will cause the material to move obliquely during transportation. At the same time, after the spring 1104 is stretched, the bottom surface of the blocking rod 1103 is in contact with the bottom surface of the sliding seat 1102. When the sensor detects that the material is qualified, it sends a qualified signal to the electromagnet 1101 and closes the electromagnet 1101. The blocking rod 1103 rises and no longer deflects the movement direction of the material.

[0038] Multiple rotating columns 12 are fixedly installed on the bottom surface of the blocking rod 1103. A lever 13 is rotatably connected to the outer end of each rotating column 12. The first rotating column 12 is located at the middle of the bottom surface of the blocking rod 1103, and the remaining rotating columns 12 are arranged sequentially towards the conveying direction of the conveying device 3. When the blocking rod 1103 reaches its lowest point, the lever 13 contacts the conveying device 3 and rotates through friction with the conveying device 3. The bottom surface of each rotating column 12 has an annular protrusion with an elliptical top surface (see...). Figure 5There is a height difference between the two endpoints on the major axis of the ellipse, and the height of the endpoint facing the limit seat 203 is lower than the height of the other endpoint. The lever 13 is rotatably connected to the outer end of the rotating column 12, and the bottom surface of the lever 13 is in contact with the elliptical surface of the rotating column 12, thereby ensuring the unidirectional rotation of the lever 13. When the lever 13 rotates with the conveying device 3, the material on the blocking rod 1103 will be subjected to external force and thus accelerate lateral movement. At the same time, the lever 13 will move up and down along the axial direction during the rotation. After the qualified signal is issued, the rotating column 12 rises. Since the major axis of the elliptical surface of the rotating column 12 is perpendicular to the blocking rod 1103, and the mass of the lever 13 at the lowest point of the elliptical surface of the rotating column 12 is heavier than that of the other side of the lever 13 when the lever 13 is stationary, the lever 13 will return to the initial position under the action of gravity, thereby ensuring that the lever 13 always has an angle with the direction of travel of the conveying device 3. Example 2

[0039] A solder ball welding equipment and a solder ball welding production line are disclosed, including the solder ball welding equipment described in Embodiment 1 and a loading and unloading structure (not shown in the figure). The loading and unloading structure places the material onto the conveying equipment 3, which then transports the material. When passing through the welding chamber 1, the workpiece is welded by the internal nozzles and lifting equipment. After passing through the inspection equipment 2, the workpiece is inspected and flipped. At the same time, the workpiece is cooled when entering the inspection equipment 2. In the entire process, an inspection equipment 2 is set at the next station after each welding chamber 1, and the fit between the inspection equipment 2 and the welding chamber 1 must be ensured to ensure that the internal nitrogen is always full, so as to avoid oxidation of the solder joint before it is cooled, thereby ensuring the output rate of the entire production line.

[0040] The above embodiments are merely preferred embodiments of the present invention. The structure of the present invention is not limited to the forms listed in the above embodiments. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A solder ball welding device, comprising a welding chamber (1), an inspection device (2), and multiple conveying devices (3) penetrating the welding chamber (1), characterized in that: Multiple sliding blocks (4) are equidistantly connected to the sliding seat inside the welding chamber (1). A lifting device (5) is connected to the top of the sliding block (4). A moving block (6) is connected to the top of the lifting device (5). A storage chamber (7) for storing solder balls and a nozzle are connected to the bottom of the moving block (6). A second motor (8) is connected to one side of the storage chamber (7). A ball storage chamber (9) is provided inside the storage chamber (7). A stirring paddle (10) to prevent solder balls from clogging is connected to the outlet of the ball storage chamber (9). The testing device (2) includes a support base (201), a first motor (202), a limiting card seat (203) for limiting and flipping the welded parts, and a pneumatic clamp (204) for fastening the welded parts. The support base (201) is connected to a screening device (11) for screening the welded parts at the end along the conveying direction of the conveying device (3). The bottom of the screening device (11) is connected to a rotating column (12) and a paddle (13) for feeding materials. The screening device (11) includes an electromagnet (1101), a sliding seat (1102), a blocking rod (1103), a spring (1104), and a magnetic column (1105). The electromagnet (1101) is fixedly installed at equal intervals on the inner wall of the support base (201). The sliding seat (1102) is connected to the inner wall of the support base (201) below the electromagnet (1101). The inner wall of the sliding seat (1102) is connected to the spring (1104). The blocking rod (1103) is fixedly installed at the end of the spring (1104). The magnetic column (1105) is connected to the top surface of the blocking rod (1103) and the corresponding output end of the electromagnet (1101). The blocking rod (1103) is slidably connected to the inner wall of the sliding seat (1102). The area of ​​the blocking rod (1103) above the conveying device (3) is inclined along the conveying direction of the conveying device (3). The magnetic force generated by the electromagnet (1101) is the same as the magnetic force generated by the upward end face of the magnetic column (1105). The length of the spring (1104) should ensure that there is a gap between the bottom surface of the magnetic column (1105) and the electromagnet (1101). At the same time, after the spring (1104) is stretched, the bottom surface of the blocking rod (1103) and the bottom surface of the sliding seat (1102) come into contact. The first rotating column (12) is located at the middle of the bottom surface of the blocking rod (1103), and the remaining rotating columns (12) are arranged in sequence towards the conveying direction of the conveying device (3). The bottom surface of the rotating column (12) has an annular protrusion with an elliptical top surface. There is a height difference between the two endpoints on the major axis of the ellipse, and the height of the endpoint facing the limiting seat (203) is lower than the height of the other endpoint. The major axis of the elliptical surface of the rotating column (12) is perpendicular to the blocking rod (1103). The paddle (13) is rotatably connected to the outer end of the rotating column (12), and the bottom surface of the paddle (13) is in contact with the elliptical surface of the rotating column (12). The length of the lever (13) should ensure that it does not come into contact with the blocking rod (1103). When the spring (1104) is extended to its longest length, the lowest point of the lever (13) comes into contact with the surface of the conveying device (3). When the lever (13) is stationary, the mass at the lowest point of the elliptical surface of the rotating column (12) is heavier than the other side of the lever (13).

2. The solder ball welding equipment according to claim 1, characterized in that: The first motor (202) is located on the side of the support base (201) and above the conveying device (3). The limiting card seat (203) is in the shape of a "U". The non-notch end of the limiting card seat (203) is connected to the output shaft of the first motor (202). The extended end of the notch of the limiting card seat (203) is provided with a pneumatic clamp (204) with the opposite direction of movement.

3. The solder ball welding equipment according to claim 2, characterized in that: There is a gap between the limiting card seat (203) and the surface of the conveying device (3), and the first motor (202) rotates at a single angle of 180°.

4. The solder ball welding equipment according to claim 1, characterized in that: The second motor (8) is fixedly installed on one side of the storage bin (7). The ball storage bin (9) is rotatably connected to the conical outlet of the ball storage bin (9). The ball storage bin (9) is spirally arranged and rotatably connected to the output end of the second motor (8).

5. The solder ball welding equipment according to claim 1, characterized in that: The bottom surface of the blocking rod (1103) is fixedly equipped with multiple rotating columns (12), and the outer end of the rotating column (12) is rotatably connected to a lever (13).

6. A solder ball sputtering production line, characterized in that: The solder ball welding production line includes the solder ball welding equipment as described in any one of claims 1 to 5, and each welding chamber (1) is equipped with a testing device (2) at the next station.

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