A rotary direct drive suction nozzle quick change device

Abstract

The present application relates to chip mounting technology field, especially to a kind of rotary direct drive suction nozzle quick-change device, including carousel, suction nozzle assembly, force bar, rotary drive mechanism and lifting drive mechanism, carousel includes lower disc body, upper ring body and connecting wall, three enclose and form recessed area, rotary drive mechanism part extends into the recessed area;The present application will be part of rotary drive mechanism into the recessed area of carousel to drive carousel rotation, make rotary drive mechanism and carousel adopt direct drive form, save intermediate transmission, further reduce transmission error, and direct drive form makes rotary drive mechanism and carousel realize longitudinal stacking, reduce horizontal dimension, while the recessed area of carousel is set to make carousel and rotary drive mechanism partially overlap in height, further make the longitudinal dimension of device can be reduced, to realize the miniaturization of device, and the overlapping arrangement makes the length of force bar arranged in the side of rotary drive mechanism be shortened, to improve mounting precision.

Description

Technical Field

[0001] This invention relates to the field of chip mounting technology, and in particular to a rotary direct-drive nozzle quick-change device. Background Technology

[0002] During chip mounting, a pick-up nozzle is typically used to pick up the chip and mount it to a specific position on the substrate. In actual operation, the chips to be mounted on the same substrate may have multiple specifications. Therefore, it is necessary to use a variety of different specifications of pick-up nozzles to carry out the pick-up operation. In the existing technology, a turntable with multiple different specifications of pick-up nozzles is generally used to switch between pick-up nozzles.

[0003] For example, patent CN108028205B discloses a system for placing bare dies on a substrate, including a turntable, a force bar, and a motor, which are rotatably fixed to the frame. The turntable includes a rotation measuring device and multiple die placement head holding parts positioned adjacent to its periphery. The motor rotates the turntable when started. However, the motor is located on the side of the turntable and transmits rotational power through a drive system consisting of a belt and pulleys. First, the side-mounted motor layout results in a larger overall size, which is not conducive to the miniaturization and integration design of the equipment. At the same time, the motor and turntable are driven by a belt, and the torque is transmitted by the friction between the belt and the pulley. Under long-term operation or load changes, the belt is prone to slippage, loosening, or wear, resulting in transmission errors. Since the chip size is usually on the millimeter level or even smaller, the requirements for placement accuracy are extremely stringent. Even a small error in this transmission method may lead to inaccurate nozzle positioning, resulting in pick-up failure or placement misalignment, which seriously affects the production yield and efficiency. In addition, long-term wear of the belt will produce debris, which will fall and contaminate the chip, affecting its functionality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the existing chip pick-up device uses a side-mounted motor, which results in an oversized overall size, and the use of a belt to drive the motor and the turntable, which leads to transmission errors and inaccurate nozzle positioning, seriously affecting the production qualification rate and efficiency, the present invention provides a rotary direct-drive nozzle quick-change device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a rotary direct-drive nozzle quick-change device, comprising:

[0006] The turntable includes a lower plate body, an upper ring body located above the lower plate body, and a connecting wall for connecting the outer peripheral wall of the lower plate body and the inner peripheral wall of the upper ring body. The three parts together form a recessed area, and the upper ring body has multiple spaced fixing grooves along its circumference.

[0007] The suction nozzle assembly has multiple nozzles, which are correspondingly installed in multiple fixing slots;

[0008] A force bar is used to push the nozzle assembly away from its corresponding fixing slot and drive the nozzle assembly to pick up the chip;

[0009] A rotary drive mechanism extends partially into the recessed area and is used to drive the turntable to rotate.

[0010] And a lifting drive mechanism, used to drive the force-applying rod to move up and down.

[0011] Furthermore, a connecting hole is provided at the center of the lower plate for the output shaft of the rotary drive mechanism to extend into, and the connecting hole protrudes downward from the lower plate to form a protrusion. The first fastener is screwed into the protrusion and the output shaft in sequence.

[0012] Furthermore, both the turntable and the force-applying rod are magnetically attached to the suction nozzle assembly.

[0013] Furthermore, the wall of the fixing groove is formed with a limiting step for allowing the suction nozzle assembly to disengage downwards while restricting it from disengaging upwards.

[0014] Furthermore, the suction nozzle assembly includes a suction nozzle body, a suction nozzle seat for clamping the suction nozzle body, and a magnetic suction element for magnetically fixing the suction nozzle seat in a fixing groove.

[0015] Furthermore, the suction nozzle seat has an embedding groove for the magnetic suction member to be inserted, and the outer peripheral part of the side of the magnetic suction member facing the groove opening is magnetically engaged with the limiting step to form an outer magnetic suction part, and the central part is magnetically engaged with the force application rod to form an inner magnetic suction part.

[0016] Furthermore, the nozzle seat has a nozzle channel extending axially for insertion of the nozzle body. The inner wall of the nozzle channel has a notch extending to one side to the outer peripheral wall of the nozzle seat, so as to form a locking arm and a cantilever that can approach or move away from the locking arm at the notch. A second fastener is screwed into the locking arm and the cantilever to fix the nozzle body located between them.

[0017] Furthermore, the lower end of the force-applying rod has a insertion hole that penetrates its end face so that the insertion end of the suction nozzle seat can extend into it, and the insertion end of the suction nozzle seat has a guide slope.

[0018] Furthermore, it also includes a base and a fixing block connected between the base and the rotary drive mechanism, wherein at least two sides of the fixing block are fixed to the rotary drive mechanism.

[0019] Furthermore, either the suction nozzle seat or the wall of the fixing groove has a protruding anti-rotation shaft, and the other has a recessed anti-rotation hole for the anti-rotation shaft to be inserted into.

[0020] The beneficial effects of this invention are as follows: This invention extends the rotary drive mechanism into the recessed area of ​​the turntable to drive the turntable to rotate, making the rotary drive mechanism and the turntable adopt a direct drive form, eliminating intermediate transmission, thereby reducing transmission error and greatly improving the rotation accuracy of the turntable. In addition, the direct drive form allows the rotary drive mechanism and the turntable to be stacked longitudinally, reducing the lateral dimension. At the same time, the setting of the recessed area on the turntable allows the turntable and the rotary drive mechanism to partially overlap in height, thereby reducing the longitudinal dimension of the device and realizing the miniaturization of the device. Furthermore, this overlapping setting allows the length of the force bar arranged on the side of the rotary drive mechanism to be shortened, thereby improving the mounting accuracy. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a three-dimensional schematic diagram from a first perspective of the present invention;

[0023] Figure 2 This is a three-dimensional schematic diagram from a second perspective of the present invention;

[0024] Figure 3 This is the front view of the present invention;

[0025] Figure 4 This is a cross-sectional view of the present invention;

[0026] Figure 5 yes Figure 4 A magnified view of part A (at this point, the force rod pushes the suction nozzle assembly away from the fixing groove);

[0027] Figure 6 This is a schematic diagram of the structure in this invention where the force-applying rod has not yet applied pressure to the suction nozzle assembly;

[0028] Figure 7 It is the first type of assembly structure for the rotary drive mechanism and the base;

[0029] Figure 8 This is the second type of assembly structure between the rotary drive mechanism and the base;

[0030] Figure 9 yes Figure 7 A schematic diagram of the structure of the fixing block used in the process;

[0031] Figure 10 yes Figure 8 A schematic diagram of the structure of the fixing block used in the process;

[0032] Figure 11 This is a three-dimensional schematic diagram of the turntable from a first-person perspective in this invention;

[0033] Figure 12This is a three-dimensional schematic diagram of the turntable from a second perspective in this invention;

[0034] Figure 13 This is a front view of the turntable in this invention;

[0035] Figure 14 This is a three-dimensional schematic diagram of the suction nozzle seat from a first-view perspective in this invention;

[0036] Figure 15 This is a three-dimensional schematic diagram of the suction nozzle seat from a second perspective in this invention;

[0037] In the picture:

[0038] 1. Turntable; 101. Lower plate body; 102. Upper ring body; 103. Connecting wall; 104. Fixing groove; 1041. Limiting step; 1042. Anti-rotation hole; 105. Connecting hole; 106. Protrusion;

[0039] 2. Suction nozzle assembly; 201. Suction nozzle body; 202. Suction nozzle seat; 2021. Insertion groove; 2022. Suction nozzle channel; 2023. Notch; 2024. Locking arm; 2025. Cantilever; 2026. Guide slope; 2027. Anti-rotation shaft; 203. Magnetic suction component;

[0040] 3. Force-applying rod; 301. Insertion hole; 302. Clearance hole;

[0041] 4. Rotary drive mechanism; 401. Output shaft;

[0042] 5. Lifting drive mechanism;

[0043] 6. Base;

[0044] 7. Fixing block; 701. Main connecting part; 702. Secondary connecting part. Detailed Implementation

[0045] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0046] like Figures 1-15 As shown, a rotary direct-drive quick-change nozzle device includes:

[0047] Turntable 1 includes a lower plate 101, an upper ring 102 located above the lower plate 101, and a connecting wall 103 for connecting the outer peripheral wall of the lower plate 101 and the inner peripheral wall of the upper ring 102. The three components together form a recessed area, which is located at the center of the turntable 1. The upper ring 102 has a plurality of spaced fixing grooves 104 along its circumference. The upper ring 102 can be roughly disc-shaped or plum blossom-shaped. In this embodiment, the plum blossom shape is preferred. The upper ring 102 is recessed between two fixing grooves 104 to achieve weight reduction.

[0048] The suction nozzle assembly 2 has multiple corresponding to multiple fixing slots 104, and each suction nozzle assembly 2 can be detachably installed in its corresponding fixing slot 104;

[0049] The force bar 3 is used to push the suction nozzle assembly 2 away from its corresponding fixing groove 104 and drive the suction nozzle assembly 2 to perform chip suction. After the chip suction is completed, the suction nozzle assembly 2 is driven to enter the fixing groove 104 again.

[0050] The rotary drive mechanism 4 extends partially into the recessed area and is used to drive the turntable 1 to rotate. Its output shaft 401 is coaxially arranged with the turntable 1 and the rotary drive mechanism 4 is arranged on the side of the force rod 3. The rotary drive mechanism 4 can be a motor. The arrangement of the recessed area of ​​the turntable 1 causes the rotary drive mechanism 4 and the turntable 1 to partially overlap in the longitudinal direction. At the same time, the suction nozzle assembly 2 installed in the fixing groove 104 of the upper ring 102 also partially overlaps in height with the turntable 1 and the rotary drive mechanism 4, thereby greatly reducing the overall longitudinal dimension.

[0051] The lifting drive mechanism 5 is used to drive the force rod 3 to move up and down. The lifting drive mechanism 5 can be, but is not limited to, a cylinder, an electric cylinder or an electric push rod.

[0052] In this embodiment, the rotary drive mechanism 4 extends into the recessed area of ​​the turntable 1 to drive the turntable 1 to rotate. This allows the rotary drive mechanism 4 and the turntable 1 to adopt a direct drive configuration, eliminating intermediate transmission and reducing transmission errors. This significantly improves the rotational accuracy of the turntable 1. Furthermore, the direct drive configuration enables the rotary drive mechanism 4 and the turntable 1 to be stacked longitudinally, reducing the lateral dimensions. At the same time, the recessed area on the turntable 1 causes the turntable 1 and the rotary drive mechanism 4 to partially overlap in height, thereby reducing the longitudinal dimensions of the device and achieving miniaturization. This overlapping configuration also shortens the length of the force bar 3 arranged on the side of the rotary drive mechanism 4, thus improving the mounting accuracy.

[0053] In some examples, the lower plate 101 has a connecting hole 105 at its center for the output shaft 401 of the rotary drive mechanism 4 to extend into, and the connecting hole 105 protrudes downward from the lower plate 101 to form a protrusion 106. A first fastener is screwed into the protrusion 106 and the output shaft 401 in sequence. The number of the first fasteners can be one, two, or three, etc. The output shaft 401 of the rotary drive mechanism 4 is fixed after it is inserted into the turntable 1. When the two are inserted, they have a high degree of overlap, which can further reduce the height of the device and realize the miniaturization of the device. At the same time, multiple windows are opened along the circumference of both the connecting wall 103 and the lower plate 101, which can further reduce the overall weight.

[0054] In some examples, the turntable 1 and the force-applying rod 3 are magnetically engaged with the suction nozzle assembly 2. In the initial state, the suction nozzle assembly 2 is not acted upon by the force-applying rod 3 and is magnetically fixed in the fixing groove 104 of the turntable 1. When the force-applying rod 3 applies pressure to the suction nozzle assembly 2 and the pressure is greater than the suction force of the turntable 1 on the suction nozzle assembly 2, the force-applying rod 3 can push the suction nozzle assembly 2 away from the fixing groove 104. At the same time, the force-applying rod 3 is magnetically fixed with the suction nozzle assembly 2, and the force-applying rod 3 can drive the suction nozzle assembly 2 to move synchronously.

[0055] In some examples, the wall of the fixing groove 104 is formed with a limiting step 1041 for allowing the suction nozzle assembly 2 to disengage downwards while restricting it from disengaging upwards. The fixing groove 104 is smaller at the top and larger at the bottom to form the limiting step 1041. When the force rod 3 overcomes the suction between the suction nozzle assembly 2 and the turntable 1, it can push the suction nozzle assembly 2 downwards to disengage from the fixing groove 104 and perform chip suction. After the chip is suctioned, the force rod 3 drives the suction nozzle assembly 2 upwards to enter the fixing groove 104. When the suction nozzle assembly 2 abuts against the limiting step 1041, the limiting step 1041 can restrict the suction nozzle assembly 2 from continuing to move upwards. When the force rod 3 continues to move upwards, it can achieve separation from the suction nozzle assembly 2.

[0056] In some examples, the suction nozzle assembly 2 includes a suction nozzle body 201, a suction nozzle seat 202 for holding the suction nozzle body 201, and a magnetic suction element 203 for magnetically fixing the suction nozzle seat 202 in a fixing groove 104. The suction nozzle seat 202 holds the suction nozzle body 201 inside it so that the two form an assembly. The magnetic suction element 203 is magnetically attracted to both the suction nozzle seat 202 and the turntable 1 to fix the aforementioned assembly in the fixing groove 104. The magnetic suction element 203 can be a permanent magnet or an electromagnet.

[0057] In some examples, the upper end face of the suction nozzle seat 202 is recessed to form an embedding groove 2021 for the magnetic suction member 203 to be embedded. The depth of the embedding groove 2021 is consistent with the thickness of the magnetic suction member 203. The outer periphery of the side of the magnetic suction member 203 facing the groove opening of the embedding groove 2021 magnetically engages with the limiting step 1041 to form an outer magnetic suction part, and the central part magnetically engages with the force-applying rod 3 to form an inner magnetic suction part. When the force-applying rod 3 does not apply pressure to the suction nozzle assembly 2, the suction nozzle assembly 2 is fixed by being attracted to the groove wall of the fixing groove 104 through the outer magnetic suction part. When the force-applying rod 3 moves down and applies pressure to the suction nozzle assembly 2, the inner magnetic suction part of the suction nozzle assembly 2 is attracted to the force-applying rod 3, and the outer magnetic suction part gradually separates from the fixing groove 104.

[0058] In some examples, the nozzle seat 202 has a nozzle channel 2022 extending axially therein for the nozzle body 201 to be inserted, and the nozzle body 201 extends downward out of the nozzle channel 2022, and a first step is formed inside the nozzle channel 2022 to limit the nozzle body 201.

[0059] The inner wall of the suction channel 2022 has a notch 2023 extending to one side to the outer peripheral wall of the suction seat 202, so as to form a locking arm 2024 and a cantilever 2025 that can approach or move away from the locking arm 2024 at the notch 2023. The locking arm 2024 and the cantilever 2025 are connected to one side to form a generally U-shaped structure. The locking arm 2024 has a first fastening hole and the cantilever 2025 has a second fastening hole. A second fastener is screwed into the first fastening hole of the locking arm 2024 and the second fastening hole of the cantilever 2025 to fix the suction body 201 located between the two.

[0060] In some examples, the lower end of the force-applying rod 3 has an insertion hole 301 that extends through its end face for the insertion end of the suction nozzle seat 202 to extend into, and the upper end of the insertion hole 301 has a second step for limiting the insertion depth of the suction nozzle seat 202, and the insertion end of the suction nozzle seat 202 has a guide slope 2026 to facilitate the insertion of the suction nozzle seat 202.

[0061] In some examples, the system also includes a base 6 and a fixing block 7 connected between the base 6 and the rotary drive mechanism 4. The lifting drive mechanism 5 is also mounted on the base 6. At least two sides of the fixing block 7 are bolted to the rotary drive mechanism 4 to form at least two secondary connection points. Specifically, the two sides of the fixing block 7 are arranged opposite each other to form two opposing secondary connection portions 702. The two secondary connection portions 702 are connected by a main connection portion 701, and the main connection portion 701 is also connected to the side of the base 6. Alternatively, the two sides of the fixing block 7 are arranged adjacent to each other to form two adjacent secondary connection portions 702. The connection portion of the two secondary connection portions 702 extends to form a main connection portion 701, and the main connection portion 701 is bolted to the bottom surface of the base 6.

[0062] In some examples, either the suction nozzle seat 202 or the wall of the fixing groove 104 has a protruding anti-rotation shaft 2027, and the other has a recessed anti-rotation hole 1042 for the anti-rotation shaft 2027 to be inserted into. In this embodiment, the anti-rotation shaft 2027 is located on the suction nozzle seat 202, and the anti-rotation hole 1042 communicates with the fixing groove 104. The anti-rotation shaft 2027 and the anti-rotation hole 1042 cooperate to guide the lifting and lowering of the suction nozzle assembly 2 to prevent it from deflecting unexpectedly. At the same time, the force rod 3 has a clearance hole 302 for avoiding the anti-rotation shaft 2027.

[0063] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A rotary direct-drive quick-change nozzle device, characterized in that: include: The turntable (1) includes a lower plate (101), an upper ring (102) located above the lower plate (101), and a connecting wall (103) for connecting the outer peripheral wall of the lower plate (101) and the inner peripheral wall of the upper ring (102). The three together form a recessed area, and the upper ring (102) has a plurality of spaced fixing grooves (104) along its circumference. The suction nozzle assembly (2) has multiple nozzles and is correspondingly installed in multiple fixing slots (104); The force bar (3) is used to push the nozzle assembly (2) away from its corresponding fixing groove (104) and drive the nozzle assembly (2) to pick up the chip; A rotary drive mechanism (4) extends partially into the recessed area and is used to drive the turntable (1) to rotate; and lifting drive mechanism (5), used to drive the force rod (3) to perform lifting movement; The lower plate (101) has a connecting hole (105) at its center for the output shaft (401) of the rotary drive mechanism (4) to extend into. The connecting hole (105) protrudes downward from the lower plate (101) to form a protrusion (106). The first fastener is screwed into the protrusion (106) and the output shaft (401) in sequence. The wall of the fixing groove (104) is formed with a limiting step (1041) for allowing the suction nozzle assembly (2) to disengage downwards while restricting it from disengaging upwards. The suction nozzle assembly (2) includes a suction nozzle body (201), a suction nozzle seat (202) for holding the suction nozzle body (201), and a magnetic suction element (203) for magnetically fixing the suction nozzle seat (202) in the fixing groove (104). The suction nozzle seat (202) has an insert groove (2021) for the magnetic suction member (203) to be inserted into. The outer periphery of the side of the magnetic suction member (203) facing the groove opening of the insert groove (2021) is magnetically attracted to the limiting step (1041) to form an outer magnetic suction part, and the center part is magnetically attracted to the force rod (3) to form an inner magnetic suction part.

2. The rotary direct-drive quick-change nozzle device according to claim 1, characterized in that: The turntable (1) and the force bar (3) are magnetically attached to the suction nozzle assembly (2).

3. The rotary direct-drive quick-change nozzle device according to claim 1, characterized in that: The nozzle seat (202) has a nozzle channel (2022) extending axially for insertion of the nozzle body (201). The inner wall of the nozzle channel (2022) has a notch (2023) extending to one side to the outer peripheral wall of the nozzle seat (202), so as to form a locking arm (2024) and a cantilever (2025) that can approach or move away from the locking arm (2024) at the notch (2023). A second fastener is screwed into the locking arm (2024) and the cantilever (2025) to fix the nozzle body (201) located between them.

4. The rotary direct-drive quick-change nozzle device according to claim 1, characterized in that: The lower end of the force-applying rod (3) is provided with a plug hole (301) that penetrates its end face so that the plug end of the suction nozzle seat (202) can be inserted, and the plug end of the suction nozzle seat (202) is formed with a guide slope (2026).

5. The rotary direct-drive quick-change nozzle device according to claim 1, characterized in that: It also includes a base (6) and a fixing block (7) connected between the base (6) and the rotary drive mechanism (4), with at least two sides of the fixing block (7) fixed to the rotary drive mechanism (4).

6. The rotary direct-drive quick-change nozzle device according to claim 1, characterized in that: An anti-rotation shaft (2027) is formed on either the suction nozzle seat (202) or the groove wall of the fixing groove (104), and an anti-rotation hole (1042) is formed on the other side for the anti-rotation shaft (2027) to be inserted.

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