A chip multi-station welding adaptive clamping device

Abstract

The present invention relates to the field of chip processing technology, and in particular to a chip multi-station welding adaptive clamping device, comprising a support frame, a support provided on the top of the support frame, a self-driven turntable provided inside the support, a driving portion of the self-driven turntable built into the inner side of the support, a gap between the disk surface of the self-driven turntable and the top surface of the support, a plurality of positioning plates symmetrically provided on the top of the self-driven turntable, a plurality of clamping blocks slidingly passing through the top of each positioning plate, and a buffer portion provided inside the clamping block. Through the uniaxial rotation drive of the self-driven turntable, combined with the threaded engagement transmission of the slope disk, the spiral sleeve and the electric spiral turntable, synchronous control of the clamping action of the clamping block and the switching of the turntable station is achieved, without the need for an additional power source, significantly simplifying the structure and improving the efficiency of multi-station welding; the spherical transition structure of the buffer portion is designed to match the stiffness of the spring 2, automatically absorbing the reaction force when the clamping block contacts the chip, and dynamically adjusting the clamping force through the compression deformation of the spring 2 to avoid chip pressure damage.

Description

Technical Field

[0001] The present invention relates to the technical field of chip processing, and in particular to a chip multi-station welding adaptive clamping device. Background Art

[0002] Chips are integrated circuits made from semiconductor materials such as silicon. They integrate micro-components such as transistors, resistors, and capacitors, and are connected to external circuits via metal leads. They perform functions such as power conversion, signal processing, and system control. Chip soldering is the process of connecting the chip's metal leads to the pads on the circuit board using processes such as hot pressing, reflow soldering, or laser soldering to ensure electrical continuity and mechanical fixation.

[0003] The purpose of chip soldering clamping is to fix the chip position through the fixture, ensure the alignment of the leads and pads (error ≤ 10μm), improve the soldering yield, and prevent chip shift.

[0004] After searching, Chinese patent CN114559370A discloses a chip clamping device and clamping method thereof, which uses a first drive unit to drive multiple sets of rotating pairs to drive the clamping member to rotate, replacing the traditional screw clamping. However, this solution has the following shortcomings that can be improved:

[0005] 1. Structural redundancy and space occupation: The complex linkage of the first drive unit, connectors, blocks, and multiple sets of rotating pairs (≥8 transmission components) increases the axial size of the device by ≥30%, making it difficult to adapt to compact production line layouts.

[0006] 2. Risk of rigid transmission of clamping force: The clamping parts directly press the chip through a rotating pair, lacking a dynamic buffer mechanism. The measured clamping force fluctuates up to ±1.5N, which can easily cause indentations on the chip surface or internal microcracks.

[0007] Therefore, a chip multi-station welding adaptive clamping device is specially designed to solve the above technical problems. Summary of the Invention

[0008] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a chip multi-station welding adaptive clamping device.

[0009] The technical solution is as follows: a chip multi-station welding adaptive clamping device, including a support frame, a support is provided on the top of the support frame, a self-driven turntable is provided inside the support, the driving part of the self-driven turntable is built into the inner side of the support, the disk surface of the self-driven turntable and the top surface of the support are spaced apart, a plurality of positioning plates are symmetrically provided on the top of the self-driven turntable, a plurality of clamping blocks are provided on the top of each positioning plate for sliding through, a buffer portion is provided inside the clamping block, a slope disc is sleeved on the outside of the support, and a slope structure with arc protrusions is provided on both sides of the slope disc, and the self-driven turntable A constraint sleeve is provided on the side of each positioning plate corresponding to the bottom, and a matching rod is slidably connected inside the constraint sleeve. A spiral sleeve is fixed on the top of the matching rod, and a follower is connected to the bottom of the matching rod. The follower slides with the slope structure of the slope disc through the roller part. An electric spiral turntable is provided at the lower part of the positioning plate. The electric spiral turntable is a hollow structure. The inner wall of the electric spiral turntable is threadedly engaged with the spiral sleeve. A plurality of guide grooves are provided on the surface of the electric spiral turntable. The lower end of the clamping block cooperates with the guide groove through a sliding part, and a spring is set between the follower and the matching rod.

[0010] Optionally, the slope structures on both sides of the slope disc are symmetrically distributed arc-shaped protrusions with an inclination angle of 15°-45°, and the arc radius of the slope structure matches the diameter of the roller part of the follower one, so that when the roller part of the follower one rolls on the surface of the slope structure, the driving block moves synchronously radially along the guide groove through the meshing transmission of the spiral sleeve and the electric spiral turntable.

[0011] Optionally, the guide groove is an arc-shaped groove with a continuously gradient curvature, the groove profile of the guide groove is matched with the sliding contact surface at the lower end of the clamp, and smooth transition chamfers are provided at both ends of the groove body of the guide groove. Through the synergistic effect of the contour profile and the surface friction coefficient of the sliding contact surface, the clamp is guided to slide smoothly along the groove track of the guide groove.

[0012] Optionally, the buffer part includes a push rod, a second spring and a buffer pad. The adjacent side parts of each clamping block of each positioning plate are connected by a push rod that slides through them. The adjacent ends of each push rod are spherical transition structures. A second spring is arranged between the push rod and the inner wall of the sliding cavity of the clamping block, and buffer pads are connected to both ends of the upper part of the clamping block.

[0013] Optionally, it also includes an adjusting ring, a limiting piece, a contact rod, a spring three, a tooth plate and a limiting tooth plate. An adjusting ring is provided on the top of the support, and an annular guide groove is provided on the outer circumference of the adjusting ring. Multiple limiting pieces are fixed to the adjusting ring at circumferentially symmetrical intervals. Guide slopes are provided on the end faces of both sides of each limiting piece. A contact rod is slidingly passed through the side wall of each constraint sleeve. A spring three is provided between the contact rod and the inner wall of the constraint sleeve. The extended end of the contact rod is adjacent to the outer side of the matching rod and the end is fixed with a tooth plate. A limiting tooth plate is provided on the outer surface of the matching rod corresponding to the movement trajectory of the tooth plate. The one-way tooth pattern of the tooth plate and the ratchet teeth of the limiting tooth plate form a directional meshing locking structure. When the adjusting ring rotates circumferentially, the guide slope of the limiting piece drives the contact rod to compress the spring three and releases the tooth shape matching between the tooth plate and the limiting tooth plate.

[0014] Optionally, it also includes a guide plate, a follower 2, a positioning support rod, an alignment frame and a slide rail. The top of the adjustment ring is fixedly connected to the annular guide plate, and a special-shaped guide groove is provided on the top of the guide plate. A plurality of followers 2 corresponding to the position of the positioning plate are circumferentially distributed in the special-shaped guide groove. A split positioning support rod extends from the top of each follower 2. The upper portion of the positioning support rod is bent and extended to the top of the corresponding positioning plate. The bent and extended end of the positioning support rod is connected to an alignment frame for auxiliary welding. The alignment frame is suspended to cover the projection area of the solder pad of the chip body. A slide rail linked to each positioning support rod is provided on the top of the self-driving turntable. The lower portion of the positioning support rod forms a one-way sliding constraint with the slide rail through a sliding shoe structure, and the surface of the turntable is provided with a plurality of slide grooves matching the motion trajectory of the corresponding positioning support rod.

[0015] Optionally, the special-shaped guide groove adopts a double-flared diamond topology configuration, and the groove walls of the flared sections at both ends of the special-shaped guide groove form a parabolic guiding surface. The roller part of the follower 2 slides axially along the special-shaped guide groove based on the curvature change of the flared section, driving the positioning support rod to drive the alignment frame to switch between the expanded positioning state and the retracted avoidance state, thereby realizing multi-phase dynamic positioning and alternating operation of the welding station.

[0016] Optionally, an array of equally spaced distance adjustment holes is provided at the extended end of the positioning support rod, and an adaptive locking groove is configured at the bottom of the alignment frame corresponding to the distance adjustment holes, and an elastic buckle unit is embedded in the locking groove.

[0017] The beneficial effects are: 1. Through the uniaxial rotation drive of the self-driven turntable, combined with the threaded engagement transmission of the slope disc, spiral sleeve and electric spiral turntable, the synchronous control of the clamping action of the clamping block and the turntable station switching is realized, without the need for an additional power source, which significantly simplifies the structure and improves the multi-station welding efficiency; the spherical transition structure of the buffer part is matched with the stiffness of the spring 2, which automatically absorbs the reaction force when the clamping block contacts the chip, and dynamically adjusts the clamping force through the compression deformation of the spring 2 to avoid chip pressure damage.

[0018] 2. The arc radius of the slope structure matches the roller diameter of the follower. Combined with the inclination angle, the radial displacement of the roller is accurately converted into the axial feed of the spiral sleeve, driving the clamp to slide smoothly along the guide groove to eliminate impact vibration.

[0019] 3. The adjusting ring ratchet-engages with the latch plate and the limit tooth plate through the guiding inclined surface of the limiting part, locking the mating rod in the non-operating state to prevent accidental displacement of the clamping block and ensure clamping stability; and the guiding inclined surface of the limiting part of the adjusting ring cooperates with the third spring to realize rapid engagement and unlocking of the latch plate and the limit tooth plate, which facilitates compensation for assembly errors and improves the adaptability of the device.

[0020] 4. The guide groove has a continuously gradual curvature, and its curvature radius changes from large to small. The guide groove and the sliding part's contoured contact surface work together to gradually reduce the extension speed of the clamp, avoiding high-speed clamping causing chip body displacement. At the same time, the smooth transition chamfers at both ends of the groove eliminate motion dead points and improve movement continuity.

[0021] 5. The spherical transition structure of the rod and the elastic support of the buffer pad adaptively fit the surface topography of the chip, dynamically compensate for the clamping force deviation through the secondary stiffness of the spring, and protect the surface integrity of the chip body.

[0022] 6. The double-flared diamond topology of the special-shaped guide groove is combined with the parabolic guide surface to drive the follower to move in two radial directions, realize the switching between the expansion and contraction of the alignment frame, and eliminate the cumulative error of the turntable rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the assembly structure of the present invention.

[0024] Figure 2 It is a schematic cross-sectional view of the support, slope disc, adjustment ring and other components of the present invention.

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the positioning plate and the clamping block of the present invention.

[0026] Figure 4 It is a cross-sectional structural diagram of the follower 1, the adjustment ring and the limiting member of the present invention.

[0027] Figure 5 It is a schematic cross-sectional plan view of the follower 1, the restraining sleeve and the contact rod and other components of the present invention.

[0028] Figure 6 It is a three-dimensional structural diagram of the follower 1, the matching rod and the positioning plate and other components of the present invention.

[0029] Figure 7 It is a schematic cross-sectional view of the restraining sleeve, the matching rod and the contact rod of the present invention.

[0030] Figure 8 It is a schematic cross-sectional view of the components of the present invention, including the matching rod, the latching tooth plate and the limiting tooth plate.

[0031] Figure 9 It is a schematic cross-sectional plan view of components such as spring three, a latching tooth plate and a limiting tooth plate of the present invention.

[0032] Figure 10 It is a schematic diagram of the three-dimensional structure of the clamping block, slope disc and follower components of the present invention.

[0033] Figure 11 This is a schematic cross-sectional view of the clamping block, the push rod and the spring components of the present invention.

[0034] Figure 12 This is a schematic cross-sectional view of the adjusting ring, guide rail plate and follower components of the present invention.

[0035] Figure 13 It is a planar schematic diagram of the support, adjustment ring, guide rail plate and other components of the present invention.

[0036] Figure 14 It is a planar schematic diagram of the guide rail plate and the special-shaped guide groove of the present invention.

[0037] Figure 15 It is a three-dimensional structural diagram of the follower 2, positioning support rod, alignment frame and other components of the present invention.

[0038] In the figure: 1. support frame, 2. support, 200. chip body, 21. self-driven turntable, 22. positioning plate, 23. clamping block, 3. slope disc, 31. follower 1, 311. constraint sleeve, 32. matching rod, 321. spiral sleeve, 33. electric spiral turntable, 331. guide groove, 34. spring 1, 4. push rod, 41. spring 2, 42. buffer pad, 5. adjustment ring, 50. limit member, 51. contact rod, 52. spring 3, 53. tooth plate, 54. limit tooth plate, 6. guide plate, 611. special-shaped guide groove, 61. follower 2, 62. positioning support rod, 621. alignment frame, 63. slide rail, 64. distance adjustment hole. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention.

[0040] Example: A chip multi-station welding adaptive clamping device, such as Figures 1-13As shown, it includes a support frame 1, which serves as the main supporting structure of the device and carries the installation and positioning of all functional modules. The support frame 1 is fixed to the production line frame through bottom bolts to ensure the overall rigidity and seismic performance of the device. A support 2 is provided on the top of the support frame 1, and a self-driven turntable 21 is provided inside the support 2. The driving part of the self-driven turntable 21 is built into the inner side of the support 2. The self-driven turntable 21 has a built-in servo motor (power ≥ 200W) to drive the turntable to rotate. It is coaxially connected to the self-driven turntable 21 through a flange. The self-driven turntable 21 integrates clamping, station switching and alignment frame control functions to realize multi-station synchronous operation. The disk surface of the self-driven turntable 21 and the top surface of the support 2 are spaced apart. , six positioning plates 22 are symmetrically arranged on the top of the self-driving turntable 21, and four clamping blocks 23 are slidingly passed through the top of each positioning plate 22. The clamping blocks 23 clamp the edge of the chip body 200 to ensure that the lead and the pad are accurately aligned. The positioning plate 22 fixes the chip body 200 and guides the clamping blocks 23 to slide radially to achieve clamping and positioning. The positioning plate 22 and the clamping blocks 23 slide together through a T-shaped guide rail. A buffer is provided inside the clamping block 23, and the buffer dynamically adjusts the clamping force to prevent pressure damage on the chip surface. A slope disk 3 is sleeved on the outside of the support 2, and a slope structure with arc protrusions is provided on both sides of the slope disk 3. A constraint sleeve 311 is provided on the side of each positioning plate 22 at the bottom of the self-driving turntable 21 to constrain The sleeve 311 is slidably connected to the matching rod 32, the top of the matching rod 32 is fixed with a spiral sleeve 321, and the bottom of the matching rod 32 is connected to the follower 31. The follower 31 slides with the slope structure of the slope disc 3 through the roller part. The lower part of the positioning plate 22 is provided with an electric spiral turntable 33. The electric spiral turntable 33 is a hollow structure. The inner wall of the electric spiral turntable 33 is threadedly engaged with the spiral sleeve 321. A plurality of guide grooves 331 are provided on the surface of the electric spiral turntable 33. The lower end of the clamping block 23 is matched with the guide groove 331 through a sliding part. The guide groove 331 is an arc-shaped groove with a continuous gradient curvature. The groove profile of the guide groove 331 is matched with the contact surface of the sliding part at the lower end of the clamping block 23. Both ends of the guide groove 331 are provided with smooth transition chamfers. Through the synergistic effect of the contour profile and the surface friction coefficient of the sliding part contact surface, the guide clamp 23 slides smoothly along the groove track of the guide groove 331. The slope structure on both sides of the slope disk 3 is a symmetrically distributed arc-shaped protrusion with an inclination angle of 15°-45°, and the arc radius of the slope structure matches the diameter of the roller part of the follower 31, so that when the roller part of the follower 31 rolls on the surface of the slope structure, the spiral sleeve 321 and the electric spiral turntable 33 are engaged and driven to drive the clamp 23 to move synchronously radially along the guide groove 331, and a spring 34 is set between the follower 31 and the matching rod 32.

[0041] like Figure 2 、 Figure 4 、 Figure 5 、 Figure 7-Figure 9 and Figure 12As shown, the buffer part includes a push rod 4, a spring 241 and a buffer pad 42. The adjacent side parts of each clamping block 23 of each positioning plate 22 are all slidably connected with a push rod 4. The adjacent ends of each push rod 4 are spherical transition structures. The spherical transition structure of the push rod 4 adaptively fits the specification edges of different chip bodies 200. A spring 241 is arranged between the push rod 4 and the inner wall of the sliding cavity of the clamping block 23. The stiffness of the spring 241 matches the clamping force requirement, and the compression deformation controls the clamping force fluctuation. The two ends of the upper part of the clamping block 23 are connected with buffer pads 42, and the buffer pads 42 are made of silicone material to buffer impact.

[0042] like Figures 1-15 As shown, it also includes an adjusting ring 5, a limiting member 50, a contact rod 51, a spring three 52, a latch plate 53 and a limiting tooth plate 54. An adjusting ring 5 is provided on the top of the support 2, and an annular guide groove 331 is provided on the outer circumference of the adjusting ring 5. Six limiting members 50 are fixed to the adjusting ring 5 at circumferentially symmetrical intervals. Guide slopes are provided on both side end faces of each limiting member 50. A contact rod 51 is slidingly passed through the side wall of each constraint sleeve 311. A spring three 52 is provided between the contact rod 51 and the inner wall of the constraint sleeve 311. The extended end of the contact rod 51 is adjacent to the outer side of the matching rod 32 and the end is fixedly connected to the latch plate 53. A limiting tooth plate 54 is provided on the outer surface of the matching rod 32 corresponding to the movement trajectory of the latch plate 53. The unidirectional tooth pattern of the latch plate 53 and the ratchet teeth of the limiting tooth plate 54 form a directional meshing locking structure. When the adjusting ring 5 rotates circumferentially, the guide slope of the limiting member 50 drives the contact rod 51 to compress the spring three 52 and releases the tooth shape matching between the latch plate 53 and the limiting tooth plate 54.

[0043] like Figure 2 、 Figure 4 and Figure 12-15As shown, it also includes a guide plate 6, a follower 2 61, a positioning support rod 62, an alignment frame 621 and a slide rail 63. The top of the adjusting ring 5 is fixedly connected to the annular guide plate 6, and a special-shaped guide groove 611 is provided on the top of the guide plate 6. A plurality of followers 2 61 corresponding to the positions of the positioning plates 22 are distributed circumferentially at intervals in the special-shaped guide groove 611. A split positioning support rod 62 is extended from the top of each follower 2 61 by a set screw. The upper portion of the positioning support rod 62 is bent and extended to the top of the corresponding positioning plate 22. The bent and extended end of the positioning support rod 62 is connected to an alignment frame 621 for auxiliary welding. The guide plate 6 and the special-shaped guide groove 611 control the expansion or retraction action of the alignment frame 621 to assist in welding path planning. The alignment frame 621 is suspended to cover the projection area of the solder pad of the chip body 200. The top of the self-driving turntable 21 is provided with a countersunk screw to connect with each fixed position. The slide rail 63 is linked to the positioning support rod 62, and the lower part of the positioning support rod 62 forms a one-way sliding constraint with the slide rail 63 through a sliding shoe structure, ensuring that the alignment frame 621 only moves radially, and a plurality of slide grooves are provided on the surface of the turntable that match the movement trajectory of the corresponding positioning support rod 62; the special-shaped guide groove 611 adopts a double-flared diamond topological configuration, and the groove walls of the flared sections at both ends of the special-shaped guide groove 611 form a parabolic guiding surface. The roller part of the follower 2 61 slides axially along the special-shaped guide groove 611 based on the curvature change of the flared section, driving the positioning support rod 62 to drive the alignment frame 621 to switch between the expanded positioning state and the retracted avoidance state, thereby realizing multi-phase dynamic positioning and alternating operation of the welding station; the extending end of the positioning support rod 62 is provided with an array of equally distributed distance adjustment holes 64, and the bottom of the alignment frame 621 is provided with an adaptive locking groove corresponding to the distance adjustment hole 64, and an elastic snap unit is embedded in the locking groove.

[0044] After the device is powered on, the self-driving turntable 21 starts, and the driving unit drives the turntable to rotate through the built-in servo motor, driving multiple positioning plates 22 distributed symmetrically around the circumference to enter the initial position. At this time, the clamping blocks 23 of each positioning plate 22 are in a completely retracted state, and the buffer pads 42 are retracted into the inside of the clamping blocks 23; the alignment frame 621 is in a retracted avoidance position through the path control of the special-shaped guide groove 611 to avoid interference with the chip body 200. At the same time, the self-driving turntable 21 uses the encoder feedback and the closed-loop control of the driving unit in the support 2 to accurately dock the positioning plate 22 to the target position at a preset angle (such as 30° intervals). The matching rod 32 in the constraint sleeve 311 at the bottom of the self-driving turntable 21 is pre-tightened by spring 1 34 The force is applied to make the roller portion of the follower 31 always fit the arc-shaped raised slope structure of the slope disk 3. When the turntable is stationary, the inclination angle of the slope structure (15°-45°) forces the electric spiral turntable 33 to the zero position through the meshing relationship between the roller portion and the spiral sleeve 321, ensuring that the initial position of the clamping block 23 is centered. The adjusting ring 5 presses the contact rod 51 through the guiding inclined surface of the limiting member 50, so that the ratchet meshing of the locking tooth plate 53 and the limiting tooth plate 54 is locked, preventing the matching rod 32 from moving when not in operation.Before welding, the chip body 200 is transported to the top of the positioning plate 22 by a robotic arm or manually, triggering a clamping signal, the self-driving turntable 21 stops rotating, the electric spiral turntable 33 starts, and the driving clamp 23 performs a clamping action. The restraint sleeve 311 at the bottom of the self-driving turntable 21 stops with the turntable, and the slope disk 3 remains fixed. When the electric spiral turntable 33 starts, its inner wall engages with the thread of the spiral sleeve 321 to generate a rotational torque, driving the matching rod 32 to roll along the slope structure of the slope disk 3. The arc radius of the slope structure (matching the roller diameter) and the tilt angle work together to convert the radial displacement of the follower 31 into an axial feed of the spiral sleeve 321, thereby advancing. The clamping block 23 is pushed out radially along the guide groove 331, and the sliding part at the lower end of the clamping block 23 is embedded in the guide groove 331. The continuous gradual curvature of the guide groove 331 (the curvature radius changes from large to small) and the contour matching design of the contact surface of the sliding part make the speed of the clamping block 23 gradually decrease during the extension process to avoid impact. The smooth transition chamfers at both ends of the groove body of the guide groove 331 further eliminate the dead point of movement and ensure the continuous movement of the clamping block 23. When the clamping block 23 contacts the edge of the chip body 200, the push rod 4 of the buffer part of the clamping block 23 retracts due to the reaction force of the chip, compressing the spring 241 and the buffer pad 42 adaptively fit the surface of the chip. The spherical transition structure of the push rod 4 and the elastic The stiffness of the second spring 41 cooperates to control the clamping force within an appropriate range to prevent the chip body 200 from being damaged by pressure. After the clamping is completed, the welding robot moves to the top of the chip pad, and the alignment frame 621 needs to be switched to the expanded positioning state to assist in welding path planning. The follower 2 61 is directly driven by the rotation of the self-driving turntable 21, rather than the rotation of the adjustment ring 5. When the self-driving turntable 21 rotates, the roller portion of the follower 2 61 is embedded in the special-shaped guide groove 611, and the roller slides along the guide groove track. After entering the flared section, the curvature of the guide groove gradually increases, forcing the follower 2 61 to move radially and outward along the guide plate 6, driving the positioning support rod 62 to expand, and the lower part of the positioning support rod 62 passes through The shoe structure and the slide rail 63 at the top of the self-driven turntable 21 form a one-way sliding constraint, limiting the support rod to radial movement. The alignment frame 621 at the bent end of the positioning support rod 62 expands, overhanging to cover the projected area of the chip pad. After soldering is completed at the current station, the self-driven turntable 21 rotates in the opposite direction, and the converging section of the special-shaped guide groove 611 enters the sliding path of the roller of the follower 2 61. The curvature of the converging section of the special-shaped guide groove 611 changes from large to small, forcing the follower 2 61 to slide inward, driving the positioning support rod 62 and the alignment frame 621 to retract. After retraction, the alignment frame 621 maintains a small clearance from the chip body 200 to prevent mechanical interference when the turntable switches stations.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A chip multi-station welding adaptive clamping device, characterized by: The invention comprises a support frame (1), a support (2) is provided on the top of the support frame (1), a self-driven turntable (21) is provided inside the support (2), a driving part of the self-driven turntable (21) is built into the inner side of the support (2), a disk surface of the self-driven turntable (21) and the top surface of the support (2) are spaced apart, a plurality of positioning plates (22) are symmetrically provided on the top of the self-driven turntable (21), a plurality of clamping blocks (23) are slidably passed through the top of each positioning plate (22), a buffer portion is provided inside the clamping block (23), a slope disc (3) is sleeved on the outside of the support (2), a slope structure with arc protrusions is provided on both sides of the slope disc (3), and the bottom of the self-driven turntable (21) corresponds to the side of each positioning plate (22). A constraint sleeve (311) is provided on the side, the constraint sleeve (311) is slidably connected to the matching rod (32), the top of the matching rod (32) is fixed with a spiral sleeve (321), the bottom of the matching rod (32) is connected to a follower (31), the follower (31) is slidably matched with the slope structure of the slope disc (3) through the roller part, and an electric spiral turntable (33) is provided at the lower part of the positioning plate (22). The electric spiral turntable (33) is a hollow structure, the inner wall of the electric spiral turntable (33) is threadedly engaged with the spiral sleeve (321), and a plurality of guide grooves (331) are provided on the surface of the electric spiral turntable (33), and the lower end of the clamping block (23) is matched with the guide groove (331) through a sliding member. A spring (34) is sleeved between the actuator (31) and the matching rod (32); the slope structures on both sides of the slope disc (3) are symmetrically distributed arc-shaped protrusions, and the inclination angle thereof is 15°-45°, and the arc radius of the slope structure matches the diameter of the roller portion of the actuator (31), so that when the roller portion of the follower (31) rolls on the surface of the slope structure, the clamping block (23) is driven to move synchronously radially along the guide groove (331) through the meshing transmission of the spiral sleeve (321) and the electric spiral turntable (33); the guide groove (331) is an arc-shaped groove with a continuously gradient curvature, and the groove profile of the guide groove (331) is in contact with the sliding member at the lower end of the clamping block (23). The contact surface is profiled and matched, and both ends of the guide groove (331) are provided with smooth transition chamfers. Through the synergistic effect of the profile contour and the surface friction coefficient of the contact surface of the sliding part, the clamping block (23) is guided to slide smoothly along the groove track of the guide groove (331); the buffer part includes a push rod (4), a second spring (41) and a buffer pad (42). The adjacent side parts of each clamping block (23) of each positioning plate (22) are all connected with a push rod (4) that slides through them. The adjacent ends of each push rod (4) are all spherical transition structures. A second spring (41) is provided between the push rod (4) and the inner wall of the sliding cavity of the clamping block (23), and the upper ends of the clamping block (23) are connected with a buffer pad (42).

2. The chip multi-station welding adaptive clamping device according to claim 1, characterized in that: The support (2) further comprises an adjusting ring (5), a limiting member (50), a contact rod (51), a spring (52), a tooth plate (53) and a limit tooth plate (54). An adjusting ring (5) is provided on the top of the support (2). An annular guide groove (331) is provided on the outer circumference of the adjusting ring (5). The adjusting ring (5) is fixedly connected to a plurality of limiting members (50) at circumferentially symmetrical intervals. The end faces of both sides of each limiting member (50) are provided with guide inclined surfaces. A contact rod (51) is slidably passed through the side wall of each constraint sleeve (311). A spring is provided between the contact rod (51) and the inner wall of the constraint sleeve (311). Spring three (52), the extended end of the contact rod (51) is adjacent to the outer side of the matching rod (32) and the end is fixedly connected to a tooth plate (53), and a limiting tooth plate (54) is provided on the outer surface of the matching rod (32) corresponding to the movement trajectory of the tooth plate (53), and the one-way tooth pattern of the tooth plate (53) and the ratchet of the limiting tooth plate (54) form a directional meshing locking structure. When the adjusting ring (5) rotates circumferentially, the guiding inclined surface of the limiting member (50) drives the contact rod (51) to compress the spring three (52) and releases the tooth shape matching between the tooth plate (53) and the limiting tooth plate (54).

3. The chip multi-station welding adaptive clamping device according to claim 2, characterized in that: The invention also includes a guide rail plate (6), a follower 2 (61), a positioning support rod (62), an alignment frame (621) and a slide rail (63). The top of the adjustment ring (5) is fixedly connected to the annular guide rail plate (6). The top of the guide rail plate (6) is provided with a special-shaped guide groove (611). A plurality of followers 2 (61) corresponding to the positions of the positioning plate (22) are distributed circumferentially at intervals in the special-shaped guide groove (611). A split positioning support rod (62) extends from the top of each follower 2 (61). The upper portion of the positioning support rod (62) is bent and extended to Above the corresponding positioning plate (22), the bent and extended end of the positioning support rod (62) is connected to a positioning frame (621) for auxiliary welding, and the positioning frame (621) is suspended to cover the pad projection area of the chip body (200). The top of the self-driving turntable (21) is provided with a slide rail (63) linked to each positioning support rod (62). The lower part of the positioning support rod (62) forms a one-way sliding constraint with the slide rail (63) through a sliding shoe structure, and the surface of the turntable is provided with a plurality of slide grooves matching the movement trajectory of the corresponding positioning support rod (62).

4. The chip multi-station welding adaptive clamping device according to claim 3, characterized in that: The special-shaped guide groove (611) adopts a double-flared diamond topology configuration, and the groove walls of the flared sections at both ends of the special-shaped guide groove (611) form parabolic guiding surfaces. The roller part of the follower 2 (61) slides axially along the special-shaped guide groove (611) based on the curvature change of the flared section, driving the positioning support rod (62) to drive the alignment frame (621) to switch between the expanded positioning state and the retracted avoidance state, thereby realizing multi-phase dynamic positioning and alternating operation of the welding station.

5. The chip multi-station welding adaptive clamping device according to claim 4, characterized in that: An array of equally spaced distance adjustment holes (64) is provided at the extended end of the positioning support rod (62), and an adaptive locking groove is configured at the bottom of the alignment frame (621) corresponding to the distance adjustment holes (64), and an elastic buckle unit is embedded in the locking groove.

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