Arraying device of ball mounting platform of ball mounting machine

Abstract

The invention discloses an arraying device for a ball mounting platform of a ball mounting machine. The arraying device comprises a housing, a plurality of arraying tables, a driving mechanism and a plurality of arraying units, a plurality of avoiding grooves are formed in the housing; the plurality of arraying tables are arranged at the top of the housing and are used for placing products to be arrayed; the driving mechanism is arranged in the housing and provides driving force for movement; the plurality of arraying units are correspondingly arranged on the outer sides of the plurality of arraying tables respectively, are connected with the driving mechanism, and are driven by the driving mechanism to array products on the arraying tables. The linear guide rails are used for driving the air cylinders to control alignment of the carriers, and freedom degree drift is eliminated through rigid constraint. Through combination of the air cylinder and the guide rail, a traditional servo system, a high-precision precision sensor and a high-speed visual mechanism are omitted. And moreover, the pneumatic system is nearly zero in power consumption during no-load, and the energy consumption expenditure is greatly reduced compared with a vacuum adsorption platform and a multi-axis servo scheme.

Description

Technical Field

[0001] This invention relates to the field of alignment technology for the ball-planting platform of a ball-planting machine, and particularly to an alignment device for the ball-planting platform of a ball-planting machine. Background Technology

[0002] In the semiconductor packaging field, BGA ball-mounting machines have become one of the mainstream packaging methods due to their high efficiency and high precision. Currently, the overall development trend of semiconductor components is miniaturization and integration. The diameter of BGA chip solder balls is constantly shrinking, and the number of balls per product is increasing. This evolutionary trend places higher demands on the precision, yield, and ball-mounting efficiency of ball-mounting equipment.

[0003] The ball-mounting platform alignment mechanism, as the core subsystem of the BGA ball-mounting machine, directly determines the positioning accuracy and production yield of the solder balls. Its core function is to precisely arrange, orient, and position bulk solder balls to their corresponding positions. Current mainstream technologies include vacuum adsorption, gravity free-fall, and mechanical brushing. However, when facing the demands of small ball diameters (≤0.3mm) and high-density ball mounting, these technologies generally suffer from technical bottlenecks such as insufficient ball uniformity, positional accuracy deviations (above ±0.05mm), easy clogging by small balls, and poor adaptability to various product types.

[0004] The most common ball-planting machine alignment mechanism currently available uses multi-axis motion platform alignment technology. This technology relies on a precision slide (such as a lead screw or linear motor) driven by a servo motor to achieve carrier positioning, and is often used in conjunction with a vision system. The mechanical backlash of this alignment method's multi-stage transmission chain (motor → lead screw → slide) accumulates continuously during reciprocating motion, causing persistent cumulative errors. Although grating linear motors can be used, after prolonged continuous operation, positioning drift due to lead screw wear can reach ±0.02mm, exceeding the 0.05mm ball-planting accuracy tolerance. Furthermore, the inertia of moving parts causes overshoot during start-stop phases, requiring frequent start-stop positioning during ball planting (cycle time ≤ 15s). To suppress vibration, the equipment is forced to reduce acceleration, shortening the effective ball-planting time by 40%.

[0005] Using negative pressure to adhere the carrier to the platform surface is also a common alignment technology. This technology utilizes a vacuum suction cup in the fixture's limiting mechanism to achieve alignment and positioning of the carrier or product. However, during continuous operation, aging of the sealing ring or dust accumulation can lead to a decrease in vacuum, causing slight slippage of the carrier and reducing positioning accuracy. Furthermore, this alignment method is highly dependent on flatness; when the flatness error of the carrier's back side is greater than 0.1mm, localized air leakage can cause uneven adhesion, thus affecting overall accuracy.

[0006] Currently, there are also alignment solutions that use manual adjustment of sliders or micrometers to achieve four-sided constraint of the carrier. However, the thread clearance of the slider locking mechanism results in a repeatability error of ≥0.05mm. Each time a product is changed, the four corner micrometers need to be readjusted, which is time-consuming and has low accuracy, while the overall ball-planting efficiency needs to be improved. In addition, the slider and the carrier are in rigid contact, and equipment vibration will cause continuous collisions, which will affect the ball-planting yield and also damage the carrier. Summary of the Invention

[0007] According to an embodiment of the present invention, an aligning device for a ball-planting platform of a ball-planting machine is provided, comprising: a cover, multiple aligning tables, a drive mechanism, and multiple aligning units; The cover is provided with multiple clearance grooves; Multiple aligning tables are set on top of the enclosure for placing products to be aligned; The drive mechanism is located inside the housing and provides the driving force for the movement; Multiple aligning units are respectively set on the outside of multiple aligning tables. The multiple aligning units are connected to the drive mechanism, and the products on the aligning tables are aligned under the drive of the drive mechanism.

[0008] Furthermore, the alignment unit includes: a first X-axis alignment claw, a second X-axis alignment claw, a first Y-axis alignment claw, and a second Y-axis alignment claw; The first X-axis alignment jaw and the second X-axis alignment jaw are arranged opposite each other on both sides of the alignment table; The first Y-axis alignment jaw and the second Y-axis alignment jaw are arranged opposite each other on the other two sides of the alignment table; The first X-axis alignment claw, the second X-axis alignment claw, the first Y-axis alignment claw, and the second Y-axis alignment claw all pass through the clearance groove and are connected to the drive mechanism.

[0009] Furthermore, the drive mechanism includes: a first drive unit and a second drive unit; The first drive unit is connected to the first X-axis alignment claw and the first Y-axis alignment claw in the multiple alignment units, and drives the first X-axis alignment claw and the first Y-axis alignment claw to move. The second drive unit is connected to the second X-axis alignment claw and the second Y-axis alignment claw in the multiple alignment units, and drives the second X-axis alignment claw and the second Y-axis alignment claw to move.

[0010] Furthermore, the first drive unit includes: multiple support columns, a support plate, and multiple drive mechanisms; Multiple support columns are installed on the bottom inner wall of the casing; The support plate is mounted on multiple support columns; Multiple drive mechanisms are mounted on the support plate to drive the first X-axis alignment claw and the first Y-axis alignment claw in multiple alignment units respectively.

[0011] Furthermore, the drive mechanism includes: a first X-axis slide rail, a first Y-axis slide rail, a first X-axis slider, a first Y-axis slider, a first cylinder, two connecting parts, and two springs; The first X-axis slide rail and the first Y-axis slide rail are respectively mounted on the support plate; The first X-axis slider is slidably connected to the first X-axis slide rail, and the first X-axis slider is connected to the first X-axis alignment claw. The first Y-axis slider is slidably connected to the first Y-axis slide rail, and the first Y-axis slider is connected to the first Y-axis alignment claw. The first cylinder is tilted and mounted on the support plate; Two connecting pieces are located at the output end of the first cylinder; One end of one spring is connected to one of the connectors, and the other end is connected to the first X-axis alignment claw; one end of another spring is connected to another connector, and the other end is connected to the first Y-axis alignment claw.

[0012] Furthermore, the drive mechanism also includes two limiting posts, which are respectively disposed on one side of the ends of the first X-axis slide rail and the first Y-axis slide rail.

[0013] Furthermore, the second drive unit includes: multiple guide rails, a first movable plate, multiple elongated holes, multiple connecting posts, a second movable plate, and a second cylinder; Multiple guide rails are inclinedly arranged on the bottom inner wall of the housing; The first movable plate is slidably connected to multiple guide rails; Multiple elongated holes are formed on the support plate; The bottom ends of multiple connecting posts are connected to the first movable plate, and the top ends of multiple connecting posts are respectively penetrated by multiple elongated holes; The second movable plate is set at the top of multiple connecting columns, and the second movable plate is connected to the second X-axis alignment claw and the second Y-axis alignment claw in multiple alignment units; The second cylinder is inclinedly mounted on the bottom inner wall of the casing, and the output end of the second cylinder is connected to the first movable plate.

[0014] Furthermore, the enclosure includes a base plate and an outer cover; the outer cover is mounted on the base plate.

[0015] Furthermore, the first X-axis alignment claw and the second X-axis alignment claw are U-shaped; the first Y-axis alignment claw and the second Y-axis alignment claw are I-shaped.

[0016] An alignment device for a bulb planting platform of a bulb planting machine according to an embodiment of the present invention has the following beneficial effects: 1. By driving the four alignment claws to approach the alignment machine, the products on the alignment machine are aligned, forming a closed-loop positioning system to ensure alignment accuracy and eliminate the risk of micron-level slippage caused by sealing aging or dust in vacuum adsorption.

[0017] 2. In terms of cost control, the manufacturing cost of a single workstation is reduced to 25% of that of a multi-axis servo platform or 45% of that of a vacuum adsorption solution by adopting highly standardized industrial pneumatic components. Even more significant is its extremely low maintenance cost: the mechanism eliminates the need for regularly lubricated precision lead screws, replacement of linear scales, and maintenance-free vacuum generators and seals. Its core pneumatic components have a maintenance cycle of up to two years, with annual maintenance costs less than 2% of those of a multi-axis platform, virtually eliminating unplanned downtime due to maintenance and the resulting production capacity losses.

[0018] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the alignment device of the planting platform of the planting machine according to Embodiment 1 of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the alignment device of the planting platform of the planting machine according to Embodiment 1 of the present invention when the outer cover is removed.

[0021] Figure 3 This is a front view structural diagram of the alignment device of the planting platform of the planting machine according to Embodiment 1 of the present invention when the outer cover is removed.

[0022] Figure 4 This is a top view of the arrangement device of the planting platform of the planting machine according to Embodiment 1 of the present invention when the outer cover is removed.

[0023] Figure 5 This is a top view of the alignment device of the planting platform of the planting machine according to Embodiment 1 of the present invention, with the outer cover removed and an alignment table removed.

[0024] Figure 6 This is an exploded structural diagram of the alignment device of the planting platform of the planting machine according to Embodiment 1 of the present invention. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0026] First, combine Figures 1-6 This invention describes an aligning device for a planting platform of a planting machine, which is used for aligning products and has a wide range of applications.

[0027] like Figures 1-6As shown, an alignment device for a planting platform of a planting machine according to an embodiment of the present invention includes: a cover, multiple alignment tables 200, a drive mechanism, and multiple alignment units. like Figure 1 As shown, the housing is provided with multiple clearance slots, which provide movement space for the movement of the first X-axis alignment claw 401, the second X-axis alignment claw 402, the first Y-axis alignment claw 403 and the second Y-axis alignment claw 404.

[0028] like Figures 1-6 As shown, multiple aligning tables 200 are arranged on top of the housing for placing products to be aligned.

[0029] like Figures 2-6 As shown, multiple aligning units are respectively arranged on the outside of multiple aligning tables 200. The multiple aligning units are connected to the drive mechanism and are driven by the drive mechanism to align the products on the aligning table 200.

[0030] Furthermore, such as Figures 1-6 As shown, the aligning unit includes: a first X-axis aligning claw 401, a second X-axis aligning claw 402, a first Y-axis aligning claw 403, and a second Y-axis aligning claw 404; the first X-axis aligning claw 401 and the second X-axis aligning claw 402 are arranged opposite each other on both sides of the aligning table 200; the first Y-axis aligning claw 403 and the second Y-axis aligning claw 404 are arranged opposite each other on the other two sides of the aligning table 200; the first X-axis aligning claw 401, the second X-axis aligning claw 402, the first Y-axis aligning claw 403, and the second Y-axis aligning claw 404 all pass through the clearance groove and are connected to the drive mechanism. Under the drive of the drive mechanism, the first X-axis aligning claw 401, the second X-axis aligning claw 402, the first Y-axis aligning claw 403, and the second Y-axis aligning claw 404 move closer to the aligning table 200 to align the products on the aligning table 200.

[0031] like Figures 2-6 As shown, the drive mechanism is located inside the housing and provides the driving force for the movement.

[0032] Furthermore, such as Figures 2-6 As shown, the driving mechanism includes: a first driving unit and a second driving unit; the first driving unit is connected to the first X-axis alignment claw 401 and the first Y-axis alignment claw 403 in the plurality of alignment units, and drives the first X-axis alignment claw 401 and the first Y-axis alignment claw 403 to move; the second driving unit is connected to the second X-axis alignment claw 402 and the second Y-axis alignment claw 404 in the plurality of alignment units, and drives the second X-axis alignment claw 402 and the second Y-axis alignment claw 404 to move.

[0033] Furthermore, such as Figures 2-6As shown, the first drive unit includes: multiple support columns 3011, a support plate 3012, and multiple drive mechanisms. The multiple support columns 3011 are disposed on the bottom inner wall of the housing; the support plate 3012 is disposed on the multiple support columns 3011; the multiple drive mechanisms are disposed on the support plate 3012, and are used to drive the first X-axis alignment claw 401 and the first Y-axis alignment claw 403 in the multiple alignment units to move respectively.

[0034] Furthermore, such as Figures 2-6 As shown, the drive mechanism includes: a first X-axis slide rail 3013, a first Y-axis slide rail 3014, a first X-axis slider 3015, a first Y-axis slider 3016, a first cylinder 3017, two connecting parts 3018, and two springs (not shown in the figure); the first X-axis slide rail 3013 and the first Y-axis slide rail 3014 are respectively mounted on the support plate 3012; the first X-axis slider 3015 is slidably connected to the first X-axis slide rail 3013, and the first X-axis slider 3015 is connected to the first X-axis alignment claw 401; the first... The Y-axis slider 3016 is slidably connected to the first Y-axis slide rail 3014, and the first Y-axis slider 3016 is connected to the first Y-axis alignment claw 403; the first cylinder 3017 is inclinedly mounted on the support plate 3012; two connecting pieces 3018 are mounted on the output end of the first cylinder 3017; one end of one spring is connected to one of the connecting pieces 3018, and the other end is connected to the first X-axis alignment claw 401; one end of the other spring is connected to the other connecting piece 3018, and the other end is connected to the first Y-axis alignment claw 403. The first X-axis slide rail 3013 and the first X-axis slider 3015 are used to guide the movement of the first X-axis alignment claw 401; the first Y-axis slide rail 3014 and the first Y-axis slider 3016 are used to guide the movement of the first Y-axis alignment claw 403. By controlling the operation of the first cylinder 3017, the output end of the first cylinder 3017 is retracted. Through two springs, the first X-axis alignment claw 401 and the first Y-axis alignment claw 403 are driven to move toward the alignment table 200. The setting of the two springs can prevent excessive clamping force during alignment, which could damage the product and play a certain buffering role.

[0035] Furthermore, such as Figures 2-6 As shown, the drive mechanism also includes two limiting posts 3020, which are respectively disposed on one side of the end of the first X-axis slide rail 3013 and the first Y-axis slide rail 3014, for limiting the stroke of the first X-axis slider 3015 and the first Y-axis slider 3016.

[0036] Furthermore, such as Figures 2-6As shown, the second drive unit includes: multiple guide rails 3021, a first movable plate 3022, multiple elongated holes 3023, multiple connecting posts 3024, a second movable plate 3025, and a second cylinder 3026; the multiple guide rails 3021 are inclinedly arranged on the bottom inner wall of the housing to guide the movement of the first movable plate 3022; the first movable plate 3022 is slidably connected to the multiple guide rails 3021; ​​the multiple elongated holes 3023 are formed on the support plate 3012; the multiple... The bottom end of each connecting post 3024 is connected to the first moving plate 3022, and the top ends of the connecting posts 3024 are respectively connected through multiple elongated holes 3023. A second moving plate 3025 is disposed at the top of the connecting posts 3024 and is connected to the second X-axis alignment claw 402 and the second Y-axis alignment claw 404 in the multiple alignment units. A second cylinder 3026 is inclinedly disposed on the bottom inner wall of the housing, and its output end is connected to the first moving plate 3022. By controlling the operation of the second cylinder 3026, the first moving plate 3022 can be moved, thereby moving the second moving plate 3025 through the connecting posts 3024, causing the second X-axis alignment claw 402 and the second Y-axis alignment claw 404 to move towards the alignment table 200, thus achieving alignment.

[0037] Furthermore, such as Figures 1-6 As shown, the enclosure includes a base plate 101 and an outer cover 102; the outer cover 102 is mounted on the base plate 101.

[0038] Furthermore, the first X-axis alignment claw 401 and the second X-axis alignment claw 402 are U-shaped; the first Y-axis alignment claw 403 and the second Y-axis alignment claw 404 are I-shaped.

[0039] Working principle: The products to be aligned are transferred to the corresponding alignment table 200 via an external conveying mechanism. The second cylinder 3026 is controlled to operate, driving the second X-axis alignment claw 402 and the second Y-axis alignment claw 404 in multiple alignment units to move toward the alignment table. The first cylinder 3017 is also controlled to operate, causing the output end of the first cylinder 3017 to retract. Through two springs, the first X-axis alignment claw 401 and the first Y-axis alignment claw 403 in multiple alignment units move toward the alignment table 200, thereby realizing the alignment of the products.

[0040] Above, refer to Figures 1-6 An alignment device for a bulb planting platform of a bulb planting machine according to an embodiment of the present invention is described, which has the following beneficial effects: 1. In terms of accuracy, the vehicle is pressed against the hardened reference limit post by rigid constraints, forming a closed-loop positioning system without degrees of freedom, which eliminates the risk of micron-level slippage caused by sealing aging or dust in vacuum adsorption.

[0041] 2. In terms of cost control, the manufacturing cost of a single workstation is reduced to 25% of that of a multi-axis servo platform or 45% of that of a vacuum adsorption solution by adopting highly standardized industrial pneumatic components. Even more significant is its extremely low maintenance cost: the mechanism eliminates the need for regularly lubricated precision lead screws, replacement of linear scales, and maintenance-free vacuum generators and seals. Its core pneumatic components have a maintenance cycle of up to two years, with annual maintenance costs less than 2% of those of a multi-axis platform, virtually eliminating unplanned downtime due to maintenance and the resulting production capacity losses.

[0042] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A device for aligning a ball mounting platform of a ball mounting machine, characterized in that, The utility model relates to a product aligning device, which comprises a housing, a plurality of aligning tables, a driving mechanism and a plurality of aligning units. The housing is provided with a plurality of accommodation grooves. The plurality of aligning tables are arranged on the top of the housing and used for placing products to be aligned. The driving mechanism is arranged inside the housing and provides driving force for movement. The plurality of aligning units are respectively arranged outside the plurality of aligning tables, and the plurality of aligning units are connected with the driving mechanism and align the products on the aligning tables under the driving of the driving mechanism.

2. The device for aligning the ball mounting platform of the ball mounting machine according to claim 1, wherein, The aligning unit comprises a first X-axis aligning claw, a second X-axis aligning claw, a first Y-axis aligning claw and a second Y-axis aligning claw. The first X-axis aligning claw and the second X-axis aligning claw are oppositely arranged on two sides of the aligning table. The first Y-axis aligning claw and the second Y-axis aligning claw are oppositely arranged on the other two sides of the aligning table. The first X-axis aligning claw, the second X-axis aligning claw, the first Y-axis aligning claw and the second Y-axis aligning claw all penetrate the accommodation grooves and are connected with the driving mechanism.

3. The device for aligning the ball mounting platform of the ball mounting machine according to claim 2, wherein, The driving mechanism comprises a first driving unit and a second driving unit. The first driving unit is connected with the first X-axis aligning claw and the first Y-axis aligning claw in the plurality of aligning units and drives the first X-axis aligning claw and the first Y-axis aligning claw to move. The second driving unit is connected with the second X-axis aligning claw and the second Y-axis aligning claw in the plurality of aligning units and drives the second X-axis aligning claw and the second Y-axis aligning claw to move.

4. The device for aligning the ball mounting platform of the ball mounting machine according to claim 3, wherein, The first driving unit comprises a plurality of supporting columns, a supporting plate and a plurality of driving mechanisms. The plurality of supporting columns are arranged on the inner wall of the bottom of the housing. The supporting plate is arranged on the plurality of supporting columns. The plurality of driving mechanisms are arranged on the supporting plate and used for respectively driving the first X-axis aligning claw and the first Y-axis aligning claw in the plurality of aligning units to move.

5. The device for aligning the ball mounting platform of the ball mounting machine according to claim 4, wherein, The driving mechanism comprises a first X-axis sliding rail, a first Y-axis sliding rail, a first X-axis sliding block, a first Y-axis sliding block, a first air cylinder, two connecting pieces and two springs. The first X-axis sliding rail and the first Y-axis sliding rail are respectively arranged on the supporting plate. The first X-axis sliding block is slidingly connected on the first X-axis sliding rail, and the first X-axis sliding block is connected with the first X-axis aligning claw. The first Y-axis sliding block is slidingly connected on the first Y-axis sliding rail, and the first Y-axis sliding block is connected with the first Y-axis aligning claw. The first air cylinder is obliquely arranged on the supporting plate. The two connecting pieces are arranged on the output end of the first air cylinder. One end of one of the springs is connected with one of the connecting pieces, and the other end is connected with the first X-axis aligning claw.

6. The device for aligning the ball mounting platform of the ball mounting machine according to claim 5, wherein, The other end of the other spring is connected with the other connecting piece.

7. The device for aligning the ball mounting platform of the ball mounting machine according to claim 4, wherein, The driving mechanism further comprises two limiting columns, which are respectively arranged on one side of the end of the first X-axis sliding rail and the first Y-axis sliding rail. The second driving unit comprises a plurality of guide rails, a first moving plate, a plurality of long holes, a plurality of connecting columns, a second moving plate and a second air cylinder. The plurality of guide rails are obliquely arranged on the inner wall of the bottom of the shell; The first moving plate is slidingly connected to the plurality of guide rails; The plurality of long holes are arranged on the support plate; The bottom ends of the plurality of connecting columns are connected to the first moving plate, and the top ends of the plurality of connecting columns respectively penetrate the plurality of long holes; The second moving plate is arranged on the top ends of the plurality of connecting columns, and the second moving plate is connected to the second X-axis alignment claw and the second Y-axis alignment claw in the plurality of alignment units; The second air cylinder is obliquely arranged on the inner wall of the bottom of the shell, and the output end of the second air cylinder is connected to the first moving plate.

8. The device for aligning the ball mounting platform of the ball mounting machine according to claim 1, wherein, The shell comprises a bottom plate and an outer cover, and the outer cover is arranged on the bottom plate.

9. The device for aligning the ball mounting platform of the ball mounting machine according to claim 2, wherein, The first X-axis alignment claw and the second X-axis alignment claw are U-shaped, and the first Y-axis alignment claw and the second Y-axis alignment claw are I-shaped.

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