A device for opening and closing a ball

Abstract

The utility model relates to printing ball-planting technical field, specifically disclose a kind of open-close ball-planting device, comprising: open-close feed bin, the open-close feed bin includes the fixed base with ball passing hole, and the movable bin body with ball inlet hole is movably installed on the fixed base;Ball-planting head, the ball-planting head is below the open-close feed bin, and the bottom of the ball-planting head is equipped with opening downwards ball-planting cavity;Ball inlet pipe, the ball inlet pipe is between the fixed base and the ball-planting head, the upper end of the ball inlet pipe is communicated to the ball passing hole, lower end is communicated to the ball-planting cavity;Wherein, the movable bin body has after being driven and moves to, the ball inlet hole is communicated with the ball inlet pipe through the ball passing hole and the opening state;And have after being driven and move to, the ball inlet hole and the ball passing hole are mutually staggered and the closed state.The open-close ball-planting device provided by the utility model can effectively solve the problem that soldering ball is easy to block material or even back blow.

Description

Technical Field

[0001] This utility model relates to the field of printing ball-planting technology, and in particular to an openable and closable ball-planting device. Background Technology

[0002] In semiconductor packaging technology, ball bonding (BGA ball bonding) is a common process used to form an array of solder balls on a chip or substrate.

[0003] The main structure of the solder ball placement device includes a placement cavity and an inlet tube connecting to the placement cavity. Under the influence of gravity, the solder balls fall naturally into the placement cavity through the inlet tube. Sometimes, to accelerate the positioning efficiency of the solder balls within the placement cavity, air is blown into the cavity to assist in the positioning process.

[0004] While air-assisted positioning can improve the efficiency of solder ball positioning, it can also cause airflow to blow upwards into the ball-inserting tube, interfering with the solder ball's descent. Specifically:

[0005] ① Risk of material blockage: Upward airflow may counteract or weaken the gravity of the solder balls, causing them to suspend or remain inside the inlet tube, preventing them from being discharged smoothly and causing blockage.

[0006] ② Reverse blowing: If the wind is too strong, it may blow the solder ball in the tube in the opposite direction, causing a production accident.

[0007] Therefore, it is necessary to improve the existing ball-planting device to solve the problem of solder balls easily clogging or even blowing back.

[0008] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0009] One objective of this invention is to provide an openable and closable solder ball device that can effectively solve the problem of solder balls easily clogging or even blowing back.

[0010] To achieve the above objectives, this utility model provides an openable and closable bulb-planting device, comprising:

[0011] An openable and closable feeding hopper includes a fixed base with a ball-passing hole and a movable hopper body movably mounted on the fixed base and having a ball-passing hole;

[0012] The ball-planting head is located below the openable and closable feed hopper, and the bottom of the ball-planting head is provided with a ball-planting cavity with the opening facing downward.

[0013] The ball-inlet tube is located between the fixed base and the ball-planting head, with its upper end connected to the ball-passing hole and its lower end connected to the ball-planting cavity.

[0014] The movable chamber has an open state where it moves to a position where the ball inlet hole communicates with the ball inlet tube through the ball passage hole after being driven; and a closed state where it moves to a position where the ball inlet hole and the ball passage hole are staggered.

[0015] Optionally, the fixed base and the movable chamber are rotatably arranged around a vertical rotating shaft, and the ball hole and the ball inlet are both offset from the rotating shaft.

[0016] Optionally, the fixed base is provided with a receiving groove, and the movable compartment is rotatably installed in the receiving groove;

[0017] The bottom of the receiving groove is provided with an arc-shaped groove with the rotating shaft as the central axis;

[0018] The floor of the movable compartment is provided with an operating part that extends through the arc-shaped groove to the space below the fixed base.

[0019] Optional, also includes:

[0020] A switch drive assembly, wherein the drive end of the switch drive assembly is connected to the operation unit, and is used to drive the movable chamber to move relative to the fixed base to achieve the switching between the open state and the closed state.

[0021] Optionally, the switch driving component includes:

[0022] A linear drive mechanism, which is fixedly disposed relative to the fixed base;

[0023] A connector is fixed to the drive end of the linear drive mechanism, and the connector is provided with a strip groove for the operating part to be inserted.

[0024] Optionally, it also includes a detection mechanism for detecting the falling of material inside the ball tube, the detection mechanism being communicatively connected to the switch drive assembly.

[0025] Optionally, a storage bin is provided above the ball hole.

[0026] The bottom of the storage bin is connected to the top of the ball hole, and the storage bin has a conical structure that gradually decreases in size towards the ball hole.

[0027] Optionally, it may also include a ball barrel clamping ring located above the storage silo, and a rotary drive mechanism that drives the ball barrel clamping ring to rotate around a horizontal axis.

[0028] Optionally, the fixed base is provided with an upwardly protruding ball-blocking plate near the ball-passing hole.

[0029] Optionally, the ball-planting cavity is provided with a brush disk for brushing each solder ball downwards, and a ball-passing gap is provided between the brush disk and the cavity wall of the ball-planting cavity.

[0030] The beneficial effects of this utility model are as follows: It provides an openable and closable ball-planting device, which effectively solves the problems of material blockage and backflow caused by air-assisted ball-planting in existing ball-planting devices through an innovative mechanical opening and closing structure. Its core lies in the setting of an openable and closable feeding hopper composed of a fixed base and a movable hopper body. By controlling the movement of the movable hopper body, precise alignment or misalignment of the ball-feeding hole and the ball-passing hole can be achieved.

[0031] When feeding is required, the movable chamber moves to the open position, aligning the inlet hole with the ball passage hole, allowing the solder balls to smoothly fall into the ball-planting cavity through the inlet tube;

[0032] After feeding is completed, the movable chamber immediately switches to the closed state. At this time, the ball inlet and the ball passage are completely misaligned, physically blocking the connection between the ball planting chamber and the ball inlet tube.

[0033] This design ensures that during air-assisted positioning, the upward airflow is completely blocked by the fixed base, preventing it from entering the infeed tube. This fundamentally eliminates the possibility of solder balls suspending, stagnating, or being blown out in reverse within the infeed tube. Compared to traditional open structures, this device achieves intelligent isolation between the feeding channel and the airflow working area, ensuring both smooth solder ball feeding and efficient air-assisted positioning. It perfectly solves the two major technical challenges of "material blockage risk" and "reverse blowing" in existing technologies. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A cross-sectional structural schematic diagram of the openable and closable ball-planting device provided in the embodiment;

[0036] Figure 2 An exploded view of the openable and closable feed hopper provided for an embodiment;

[0037] Figure 3 This is a schematic diagram of the structure of the openable and closable feed hopper provided in the embodiment;

[0038] Figure 4This is a schematic diagram of the structure of the switch driving component provided in the embodiment.

[0039] In the picture:

[0040] 1. Openable and closable feed hopper; 101. Fixed base; 1011. Ball passage hole; 1012. Receiving groove; 1013. Arc groove; 1014. Ball baffle; 102. Movable hopper body; 1021. Ball inlet hole; 1022. Operating unit; 1023. Storage hopper; 103. Rotating shaft;

[0041] 2. Balloon implant head; 201. Balloon implant cavity;

[0042] 3. Inlet tube;

[0043] 4. Switch drive assembly; 401. Linear drive mechanism; 402. Connector; 4021. Slot;

[0044] 5. Ball barrel clamping ring; 501. Notch; 502. Bolt hole;

[0045] 6. Rotary drive mechanism;

[0046] 7. Brush plate. Detailed Implementation

[0047] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0048] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0049] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0050] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0051] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0052] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0053] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0054] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0055] See Figures 1-3 This utility model provides an openable and closable bulb planting device, comprising:

[0056] The openable and closable feeding bin 1 includes a fixed base 101 with a ball hole 1011 and a movable bin body 102 movably mounted on the fixed base 101 and having a ball hole 1021.

[0057] The ball-planting head 2 is located below the openable and closable feeding hopper 1, and the bottom of the ball-planting head 2 is provided with a ball-planting cavity 201 with the opening facing downward;

[0058] The ball-inlet tube 3 is located between the fixed base 101 and the ball-planting head 2. The upper end of the ball-inlet tube 3 is connected to the ball-passing hole 1011 and the lower end is connected to the ball-planting cavity 201.

[0059] The movable chamber 102 has an open state in which it moves to the point where the ball inlet 1021 is connected to the ball inlet tube 3 via the ball passage 1011 after being driven; and a closed state in which it moves to the point where the ball inlet 1021 and the ball passage 1011 are staggered after being driven.

[0060] The openable and closable ball-planting device provided by this utility model achieves the functions of preventing material blockage and backflushing through the opening and closing of the movable hopper 102. The working process is as follows:

[0061] (1) Initial closed state

[0062] With the movable chamber 102 in the closed state, its ball inlet 1021 is misaligned with the ball passage 1011 of the fixed base 101, cutting off the solder ball falling channel. At this time, the air blowing auxiliary system can be safely started, and the airflow only acts on the solder ball positioning in the ball placement chamber 201 without interfering with the feeding channel.

[0063] (2) Feeding stage

[0064] When solder balls need to be added, the drive device (such as a cylinder or motor) pushes the movable chamber 102 to the open state, so that the ball inlet 1021 is aligned with the ball passage 1011;

[0065] Under the influence of gravity, the solder ball passes through the following holes in sequence: the ball inlet hole 1021 of the movable chamber 102 → the ball passage hole 1011 of the fixed base 101 → the ball inlet tube 3 → and finally falls into the ball planting cavity 201.

[0066] (3) Anti-backflush protection stage

[0067] After feeding is completed, the movable chamber 102 immediately returns to the closed state (the ball inlet 1021 and the ball passage 1011 are misaligned).

[0068] At this time, the bulb implantation cavity 201 is positioned with air blowing assistance:

[0069] ① The upward airflow is physically blocked by the fixed base 101 and cannot enter the ball tube 3;

[0070] ② Completely eliminate the risks of solder ball suspension, material blockage, or backflush.

[0071] (4) Cyclic operation

[0072] Repeat the opening and closing actions as described above: open the feed → close the anti-backflush → blow air for positioning; until the entire ball-planting process is completed.

[0073] The openable and closable ball-planting device provided by this utility model effectively solves the problems of material blockage and backflow caused by air-assisted ball-planting devices through an innovative mechanical opening and closing structure. Its core lies in the setting of an openable and closable feeding bin 1 composed of a fixed base 101 and a movable bin 102. By controlling the movement of the movable bin 102, precise alignment or misalignment of the ball inlet 1021 and the ball passage 1011 is achieved.

[0074] When feeding is required, the movable chamber 102 moves to the open state, so that the ball inlet 1021 is aligned with the ball passage 1011, and the solder ball can smoothly fall into the ball placement chamber 201 through the ball inlet tube 3.

[0075] After feeding is completed, the movable chamber 102 immediately switches to the closed state. At this time, the ball inlet 1021 and the ball passage 1011 are completely misaligned, physically blocking the connection between the ball planting chamber 201 and the ball inlet tube 3.

[0076] This design ensures that during air-assisted positioning, the upward airflow is completely blocked by the fixed base 101, preventing it from entering the inlet tube 3. This fundamentally eliminates the possibility of the solder ball suspending, stagnating, or being blown out in reverse within the inlet tube 3. Compared to traditional open structures, this device achieves intelligent isolation between the feeding channel and the airflow working area, ensuring both smooth solder ball feeding and efficient air-assisted positioning. It perfectly solves the two major technical problems of "material blockage risk" and "reverse blowing" in existing technologies.

[0077] In this embodiment, the fixed base 101 and the movable chamber 102 are rotatably arranged around a vertical rotating shaft 103, and both the ball-passing hole 1011 and the ball-entry hole 1021 are offset from the rotating shaft 103. In some other embodiments, the fixed base 101 and the movable chamber 102 can also be slidably arranged relative to each other in the horizontal direction. The movable chamber 102 is driven to reciprocate relative to the fixed base 101 by a linear drive mechanism 401, which can also make the ball-entry hole 1021 align with or deviate from the ball-passing hole 1011.

[0078] In this embodiment, the fixed base 101 is provided with a receiving groove 1012, and the movable compartment 102 is rotatably installed in the receiving groove 1012;

[0079] The bottom of the receiving groove 1012 is provided with an arc-shaped groove 1013 with the rotating shaft 103 as the central axis;

[0080] The ground of the movable compartment 102 is provided with an operating part 1022 that extends through the arc-shaped groove 1013 to the space below the fixed base 101.

[0081] Furthermore, the openable and closable ball planting device also includes a switch drive assembly 4, the drive end of which is connected to the operation unit 1022 and is used to drive the movable chamber 102 to move relative to the fixed base 101 to achieve the switching between the open state and the closed state.

[0082] See Figure 4 Optionally, the switch driving component 4 includes:

[0083] A linear drive mechanism 401 is fixedly disposed relative to the fixed base 101;

[0084] Connector 402 is fixed to the drive end of the linear drive mechanism 401, and connector 402 is provided with a strip groove 4021 for the operation part 1022 to be inserted.

[0085] Specifically, when the drive end of the linear drive mechanism 401 extends, it drives the connector 402 to move forward. The operating part 1022 is limited by the strip groove 4021 and will rotate in the forward direction along the arc groove 1013 accordingly, thereby causing the ball hole 1021 to rotate to align with the ball hole 1011. Conversely, when the drive end of the linear drive mechanism 401 retracts, it drives the connector 402 to move backward. The operating part 1022 is limited by the strip groove 4021 and will rotate in the reverse direction along the arc groove 1013 accordingly, thereby causing the ball hole 1021 to rotate to be misaligned with the ball hole 1011.

[0086] The slot 4021 is designed to smoothly convert the linear drive of the linear drive mechanism 401 into the rotational motion of the movable chamber 102, so as to avoid interference between the operating part 1022 and the connector 402.

[0087] Of course, in some other embodiments, a motor or electric cylinder can also be used to drive the movable chamber 102 to rotate relative to the fixed base 101, and this utility model does not limit this.

[0088] Optionally, the openable / closeable solder ball feeding device also includes a detection mechanism for detecting the falling material inside the ball feeding tube 3, the detection mechanism being communicatively connected to the switch drive assembly 4. Generally, the airflow for air-assisted positioning is not large enough to cause the solder balls inside the ball feeding tube 3 to be blocked or even backflowed for extended periods. Therefore, keeping the movable chamber 102 closed for a long time would affect the solder ball feeding efficiency. Adding the detection mechanism allows the movable chamber 102 to remain normally open. When the detection mechanism detects blockage or backflow of solder balls inside the ball feeding tube 3, it immediately sends a signal to the switch drive assembly 4 to switch the movable chamber 102 to the closed state.

[0089] Furthermore, the inlet tube 3 is a transparent tube, and the detection mechanism is located on the outside of the inlet tube 3, including a photoelectric sensor and / or a camera. The camera can acquire image information of the solder ball displacement in the inlet tube 3, and then use visual recognition or image analysis technology to identify solder ball blockage or backflush.

[0090] Two or three sets of photoelectric sensors are installed along the axial direction of the inlet tube 3 for detection. The order in which each set of photoelectric sensors detects the solder ball can be used to determine whether there is a blockage or backflow.

[0091] In this embodiment, a storage bin 1023 is provided above the ball hole 1021. The bottom of the storage bin 1023 is connected to the top of the ball hole 1021, and the storage bin 1023 has a conical structure that gradually decreases in size towards the ball hole 1021.

[0092] Optionally, the walls of the storage bin 1023 are coated with an antistatic coating to prevent solder balls from adhering to the movable bin body 102 due to static electricity and being unable to slide down smoothly.

[0093] In this embodiment, the openable and closable ball-planting device further includes a ball barrel clamping ring 5 located above the storage bin 1023, and a rotary drive mechanism 6 that drives the ball barrel clamping ring 5 to rotate around a horizontal axis. The ball barrel clamping ring 5 has a notch 501, and the notch 501 has a bolt hole 502 for the locking bolt to pass through. Loosening the locking bolt increases the size of the notch 501, allowing the ball barrel loaded with solder balls to be placed into the ball barrel clamping ring 5. Then, tightening the locking bolt narrows the size of the notch 501, thereby making the ball barrel clamping ring 5 firmly clamp the ball barrel.

[0094] The rotary drive mechanism 6 drives the ball barrel clamping ring 5 to rotate, so as to prevent the solder balls from being stuck in the dead corners inside the ball barrel. It can also rotate the ball barrel to solve the problem of blockage when the mouth of the ball barrel is blocked by solder balls.

[0095] Optionally, the fixed base 101 is provided with an upwardly protruding ball-blocking plate 1014 near the ball-passing hole 1011. When the movable chamber 102 rotates, the solder balls are easily flung away. The ball-blocking plate 1014 can limit the solder balls from being flung to the outer area of ​​the fixed base 101, blocking the flung solder balls and allowing them to return to the storage chamber 1023.

[0096] Optionally, the ball-placement cavity 201 is provided with a brush disk 7 for brushing each solder ball downwards. A ball-passing gap is provided between the brush disk 7 and the cavity wall of the ball-placement cavity 201. Solder balls falling through the ball-placement tube 3 will enter above the brush disk 7, and then fall below the brush disk 7 through the ball-passing gap. As the brush disk 7 moves with the ball-placement head 2, it sweeps above each solder ball, thereby accelerating the positioning efficiency of the solder balls.

[0097] It should be noted that the linear drive mechanism mentioned in this utility model can be a cylinder, hydraulic cylinder, electric cylinder, or motor lead screw linear module, etc., and the rotary drive mechanism mentioned can be a brushed motor, brushless motor, or rotary cylinder, etc. This utility model does not limit the specific structural form of the linear drive mechanism and the rotary drive mechanism.

[0098] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A closable ball-planting device, characterized in that, include: The openable and closable feed hopper (1) includes a fixed base (101) with a ball hole (1011) and a movable hopper body (102) movably installed on the fixed base (101) and having a ball hole (1021). The ball-planting head (2) is located below the openable feed hopper (1), and the bottom of the ball-planting head (2) is provided with a ball-planting cavity (201) with the opening facing downward. The ball inlet tube (3) is located between the fixed base (101) and the ball planting head (2). The upper end of the ball inlet tube (3) is connected to the ball passage hole (1011) and the lower end is connected to the ball planting cavity (201). The movable chamber (102) has an open state in which the ball inlet (1021) is connected to the ball inlet tube (3) through the ball passage (1011) after being driven; and a closed state in which the ball inlet (1021) and the ball passage (1011) are staggered after being driven.

2. The openable and closable ball-planting device according to claim 1, characterized in that, The fixed base (101) and the movable chamber (102) are rotatably arranged around a vertical rotating shaft (103), and the ball hole (1011) and the ball hole (1021) are both offset from the rotating shaft (103).

3. The openable and closable bulb-planting device according to claim 2, characterized in that, The fixed base (101) is provided with a receiving groove (1012), and the movable compartment (102) is rotatably installed in the receiving groove (1012); The bottom of the receiving groove (1012) is provided with an arc-shaped groove (1013) with the rotating shaft (103) as the central axis. The ground of the movable compartment (102) is provided with an operating part (1022) that extends through the arc groove (1013) to the space below the fixed base (101).

4. The openable and closable ball-planting device according to claim 3, characterized in that, Also includes: A switch drive assembly (4) is connected to the operation unit (1022) at its drive end, and is used to drive the movable chamber (102) to move relative to the fixed base (101) so as to realize the switching between the open state and the closed state.

5. The openable and closable ball-planting device according to claim 4, characterized in that, The switch driving component (4) includes: A linear drive mechanism (401) is fixedly disposed relative to the fixed base (101); Connector (402), the connector (402) is fixed to the drive end of the linear drive mechanism (401), and the connector (402) is provided with a strip groove (4021) for the operation part (1022) to be inserted.

6. The openable and closable ball-planting device according to claim 4, characterized in that, It also includes a detection mechanism for detecting the falling of material inside the ball tube (3), the detection mechanism being communicatively connected to the switch drive assembly (4).

7. The openable and closable ball-planting device according to claim 6, characterized in that, A storage bin (1023) is provided above the ball hole (1021). The bottom of the storage bin (1023) is connected to the top of the ball hole (1021), and the storage bin (1023) has a conical structure that gradually decreases in size towards the ball hole (1021).

8. The openable and closable ball-planting device according to claim 7, characterized in that, It also includes a ball barrel clamping ring (5) located above the storage bin (1023) and a rotary drive mechanism (6) that drives the ball barrel clamping ring (5) to rotate about a horizontal axis.

9. The openable and closable ball-planting device according to claim 1, characterized in that, The fixed base (101) is provided with an upwardly protruding ball-blocking plate (1014) near the ball-passing hole (1011).

10. The openable and closable ball-planting device according to claim 1, characterized in that, The ball-planting cavity (201) is provided with a brush disk (7) for brushing each solder ball downwards, and a ball-passing gap is provided between the brush disk (7) and the cavity wall of the ball-planting cavity (201).

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