Chip welding device based on intelligent manufacturing

Abstract

The application discloses a chip welding device based on intelligent manufacturing, and belongs to the technical field of electronic chip processing. The chip welding device based on intelligent manufacturing comprises a workbench, a main plate is fixedly installed at the top of the workbench, rotary motors are arranged on the two sides of the main plate, clamping blocks are fixedly connected to the output ends of the rotary motors, a rotary welding device is arranged on the inner side of the main plate, and the rotary welding device comprises a belt pulley one assembled in the middle part of the output end of the rotary motor, a transmission rod rotatably installed on the inner wall of the main plate and a circular frame fixedly installed on the inner wall of the main plate. The rotary welding device is arranged, the belt pulley is used for driving the reverse rotation of the circular rotating bar, the corrugated groove and the lever structure are matched to drive the radial reciprocating movement of the welding head, laser energy is uniformly scanned and heated, local overheating of welding points is effectively avoided, welding spatter is obviously reduced, and the consistency of welding seams is ensured.

Description

Technical Field

[0001] This invention belongs to the technical field, specifically relating to a chip welding device based on intelligent manufacturing. Background Technology

[0002] Chip bonding is one of the core processes in semiconductor packaging. It involves precisely fixing and electrically connecting a bare chip to a substrate or lead frame, enabling interconnection between the chip's internal circuitry and external systems. The quality of chip bonding directly determines the electrical performance, reliability, and lifespan of semiconductor devices. With the rapid development of 5G communication, artificial intelligence, the Internet of Things, and consumer electronics, chips are continuously evolving towards higher density, miniaturization, and higher integration.

[0003] The announcement number CN118789200B discloses a precision welding device for electronic chip processing, which includes a worktable. The top of the support frame is provided with a flip-up chip clamping mechanism, which includes a flipping component and an anti-static flexible clamping component.

[0004] In the aforementioned application documents, a small cylinder mounting bracket drives the motherboard and spindle to rotate, which in turn drives the first pulley, auxiliary shaft, second pulley and transmission belt at the outer end to work, thereby driving the anti-static flexible clamping assembly to flip. However, in the existing device, the stationary laser head irradiates the rotating chip, which can lead to uneven heat input distribution at the solder joint, easily causing welding spatter and inconsistent weld seams. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a chip welding device based on intelligent manufacturing, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides a chip welding device based on intelligent manufacturing, comprising a workbench, a motherboard fixedly mounted on the top of the workbench, rotary motors arranged on both sides of the motherboard, a clamping block fixedly connected to the output end of the rotary motors, a rotary welding device arranged inside the motherboard, the rotary welding device comprising a pulley one mounted in the middle of the output end of the rotary motors, a transmission rod rotatably mounted on the inner wall of the motherboard, and a circular frame fixedly mounted on the inner wall of the motherboard, a pulley two mounted on the upper side of the transmission rod, the pulley one and pulley two being connected by a transmission belt, a transmission gear mounted on the lower side of the transmission rod, a circular rotating bar rotatably mounted on the inner wall of the circular frame, a connecting block fixedly mounted on the inner wall of the circular rotating bar, a welding head slidably mounted on the inner side of the connecting block, a lever fixedly connected to the left side of the welding head, and a lever shaft arranged in the middle of the lever.

[0007] According to the above technical solution, the inner wall of the circular frame is provided with a corrugated groove, and the side of the lever away from the welding head is located inside the corrugated groove.

[0008] According to the above technical solution, the top of the circular rotating bar is provided with teeth, and the transmission gear meshes with the teeth.

[0009] According to the above technical solution, the transmission rod and the circular frame are rotatably connected, and the bottom of the worktable is provided with bottom corners.

[0010] According to the above technical solution, the inner wall of the motherboard is equipped with an isolation device for isolating the welding environment.

[0011] According to the above technical solution, the isolation device includes an isolation frame one fixedly installed on the inner wall of the main board, a top block fixedly installed on the top of the circular rotating bar, and an L-shaped top rod fixedly installed on the top of the circular frame. An isolation frame two is rotatably installed on the inner wall of the isolation frame one, and a triangular slider is slidably installed on the inner wall of the isolation frame two. An abutting block is fixedly installed on the right side of the triangular slider.

[0012] According to the above technical solution, the inclined surface of the triangular slider makes contact with the L-shaped top rod, and both the first isolation frame and the second isolation frame are provided with semi-circular exhaust ports.

[0013] According to the above technical solution, the top of the connecting block is equipped with an exhaust assembly for discharging harmful air.

[0014] According to the above technical solution, the exhaust assembly includes an L-shaped connecting rod slidably mounted on the top of the welding head and an exhaust pipe fixedly mounted on the top of the connecting block. A piston block is fixedly mounted on the end of the L-shaped connecting rod away from the welding head. A one-way valve is provided on the left side of the exhaust pipe, and a two-way valve is provided on the top of the exhaust pipe.

[0015] According to the above technical solution, the piston block is located inside the exhaust pipe, and the piston block is slidably connected to the inside of the exhaust pipe.

[0016] The advantages of this application are: (1) This application sets up a rotary welding device, which uses belt pulley transmission to drive the circular rotating bar to rotate in the opposite direction. The corrugated groove and lever structure drive the welding head to move radially back and forth, so that the laser energy scans and heats evenly, effectively avoiding local overheating of the weld point, significantly reducing welding spatter and ensuring weld consistency.

[0017] (2) This application sets up an isolation device and uses the top block and L-shaped top rod to alternately push the triangular slider to realize the automatic opening and closing control of the second isolation frame, forming a closed environment during the welding process, effectively isolating external airflow interference and improving the stability of the welding environment.

[0018] (3) This application sets up an exhaust assembly, which uses the reciprocating motion of the welding head to drive the piston block to slide in the exhaust pipe. With the opening and closing of the one-way valve, the harmful gas is drawn in real time and discharged in a directional manner, avoiding the accumulation of harmful gas in the welding area and ensuring the occupational health and safety of the operators. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall appearance and structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the rotary welding device of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the rotary welding device of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the rotary welding device of the present invention. Figure 3 ; Figure 6 This is a schematic diagram of the rotary welding device of the present invention. Figure 4 ; Figure 7 This is a schematic diagram of the rotary welding device of the present invention. Figure 5 ; Figure 8 This is a schematic diagram of the isolation device structure of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the isolation device structure of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the exhaust assembly structure of the present invention.

[0020] Explanation of key figure labels: 100. Worktable; 200. Mainboard; 300. Rotary motor; 400. Clamping block; 500. Rotary welding device; 501. Pulley 1; 502. Pulley 2; 503. Transmission belt; 504. Transmission rod; 505. Transmission gear; 506. Circular frame; 507. Circular rotating bar; 508. Connecting block; 509. Lever shaft; 510. Lever; 511. Welding head; 600. Isolation device; 601. Isolation frame one; 602. Isolation frame two; 603. Top block; 604. L-shaped top rod; 605. Abutting block; 606. Triangular slider; 700. Exhaust assembly; 701. Exhaust pipe; 702. L-shaped connecting rod; 703. Piston block; 704. One-way valve one; 705. One-way valve two. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0022] Example 1, as Figures 1-7As shown, a chip welding device based on intelligent manufacturing includes a worktable 100. The bottom of the worktable 100 has corners to enhance the stability of the overall device and prevent shaking or displacement during welding. A main board 200 is fixedly mounted on the top of the worktable 100. Rotary motors 300 are located on both sides of the main board 200, serving as the power source for the entire welding device and providing stable and controllable rotational power. A clamping block 400 is fixedly connected to the output end of the rotary motor 300 to precisely clamp the chip to be welded, ensuring its position is fixed and reliable during welding. A rotary welding device 500 is located inside the main board 200. The rotary welding device 500 includes a pulley 501 mounted in the middle of the output end of the rotary motor 300, a transmission rod 504 rotatably mounted on the inner wall of the main board 200, and a circular frame 506 fixedly mounted on the inner wall of the main board 200. The inner wall of the circular frame 506 has corrugated grooves. The transmission rod 504 and the circular frame 506 are rotatably connected. The power generated by the rotary motor 300 effectively… The rotational motion of the transmission rod 504 is transmitted to the transmission rod 504. A second pulley 502 is mounted on the upper side of the transmission rod 504. The first pulley 501 and the second pulley 502 are connected via a transmission belt 503. A transmission gear 505 is mounted on the lower side of the transmission rod 504. A circular rotating bar 507 is rotatably mounted on the inner wall of the circular frame 506. Teeth are formed at the top of the circular rotating bar 507. The transmission gear 505 meshes with the teeth, achieving smooth and reliable gear transmission and converting the rotational motion of the transmission rod 504 into the rotation of the circular rotating bar 507. The circular rotating bar 507 has a connecting block 508 fixedly installed on its inner wall. A welding head 511 is slidably installed on the inner side of the connecting block 508. A lever 510 is fixedly connected to the left side of the welding head 511. The side of the lever 510 away from the welding head 511 is located inside the corrugated groove. A lever shaft 509 is located in the middle of the lever 510. The rotational motion of the circular rotating bar 507 is constrained by the trajectory of the lever 510 in the corrugated groove, which is converted into the radial reciprocating movement of the welding head 511 along a specific path. By setting up a rotary welding device 500, the transmission gear 505 is driven by pulley 501 and pulley 502 through the transmission belt 503 to drive the circular rotating bar 507 to rotate in the opposite direction. This, combined with the oscillation of the corrugated groove and the lever 510 around the lever shaft 509, causes the welding head 511 to move radially reciprocatingly. This achieves uniform laser scanning heating, effectively avoids local overheating of the weld point, reduces welding spatter, and ensures weld consistency.

[0023] When using the above equipment, before performing chip welding operations, the operator first fixes the chip to be welded on the special clamping blocks 400 on both sides of the device to ensure the stability of the workpiece during subsequent high-speed movement. Then, the operator starts the rotary motor 300. The output of the rotary motor 300 immediately begins to rotate in the forward direction. The rotary motor 300 drives the drive clamping block 400 to rotate synchronously, thereby causing the chip firmly clamped by it to rotate. At the same time, the rotary motor 300 drives the pulley 501 to rotate synchronously. During the rotation of the pulley 501, the rotational power is transmitted to the driven pulley 502 through the transmission belt 503, causing the pulley 502 to rotate synchronously. The rotation of the pulley 502 further drives the transmission rod 504 to start rotating. The rotational motion of the transmission rod 504 is transmitted to the transmission gear 505, causing the transmission gear 505 to rotate. The rotation of the transmission gear 505 drives the circular rotating bar 507 to rotate smoothly and continuously on the inner wall track of the fixed circular frame 506. When the circular rotating bar 507 drives the connecting block 508 and the welding head 511 to rotate around the axis of the circular frame 506, the lever 510 fixed on the connecting block 508 extends into the circular rotating bar 507. One end of the surface is within a specific corrugated groove, which slides along the pre-set groove. The periodic and regular undulating contour of the corrugated groove forces the lever 510 to reciprocate around the lever axis 509, thereby directly driving the welding head 511, which is hinged to the other end of the lever 510, to reciprocate at a high frequency in the vertical direction on the inner guide rail of the connecting block 508. The above-mentioned rotational motion and vertical reciprocating sliding are superimposed, ultimately enabling the high-energy laser beam emitted from the welding head 511 to achieve a uniform scanning heating trajectory in the annular area around the chip solder joint. This non-static scanning heating mode can significantly reduce welding spatter caused by violent boiling of the molten pool, ensuring that the formed weld is highly consistent in width, depth and metallurgical bonding quality, greatly improving the reliability and mechanical strength of the welded joint. At the same time, due to the stable process and low rework rate, it significantly improves the efficiency and economic benefits of the overall welding operation.

[0024] Example 2, as Figures 8-9As shown, based on Embodiment 1, the inner wall of the motherboard 200 is equipped with an isolation device 600 for isolating the welding environment. The isolation device 600 includes an isolation frame 601 fixedly installed on the inner wall of the motherboard 200, a top block 603 fixedly installed on the top of the circular rotating bar 507, and an L-shaped top rod 604 fixedly installed on the top of the circular frame 506. The L-shaped top rod 604 plays a key role in limiting and triggering movement. An isolation frame 602 is rotatably installed on the inner wall of the isolation frame 601. Together, they form a semi-enclosed cavity that can be dynamically opened and closed as needed. This cavity is used to wrap and protect the welding area during welding operations. Both the isolation frame 601 and the isolation frame 602 have openings. The enclosure features semi-circular exhaust ports. When the cavity is closed, these ports can prevent frame 2 (602) from rotating to a specific position. When the cavity is fully closed, these two semi-circular exhaust ports can be precisely aligned, forming a complete circular gas channel. This facilitates controlled gas exchange or the discharge of harmful gases generated during welding when necessary. A triangular slider 606 is slidably mounted on the inner wall of the enclosure 2 (602). The inclined surface of the triangular slider 606 contacts and engages with the L-shaped top rod 604. A stop block 605 is fixedly mounted on the right side of the triangular slider 606. This stop block 605 acts as a force transmission medium, directly transmitting the movement of the slider to the enclosure 2 (602), thereby driving its rotation. By setting up the isolation device 600, the top block 603 and the L-shaped top rod 604 alternately push the triangular slider 606, causing the enclosure 2 (602) to automatically open and close relative to the enclosure 1 (601). This creates a closed environment during welding, effectively isolating external airflow interference and improving the stability of the welding environment.

[0025] In practical use, when the rotary motor 300 starts in the forward direction, the circular rotating bar 507 begins to rotate in the opposite direction relative to the clamping block 400. In the initial stage of the rotation of the rotating bar 507, its rotation will synchronously drive the top block 603 fixed on it to rotate. During the rotation of the top block 603, its contact surface will press against the plane of the triangular slider 606, thereby transmitting the rotational motion to the abutting block 605, which in turn drives the abutting block 605 to rotate. The rotation of the abutting block 605 directly drives the isolation frame 2 602 connected to it to rotate relative to the isolation frame 1 601 inside. As the isolation frame 2 602 continues to rotate a preset distance, the inclined part of the triangular slider 606 will come into contact with the L-shaped top rod 604 fixedly installed on the top of the circular frame 506. This contact causes the triangular slider 606 to be obstructed by the L-shaped top rod 604 and forced to move upward along its inclined direction. When the triangular slider 606 moves upward, the top block 603 no longer maintains contact with the planar part of the triangular slider 606, and the transmission connection between the two is released. Therefore, the rotation of the second isolation frame 602 stops immediately. At this moment, the second isolation frame 602 rotates to the position where it is completely closed with the first isolation frame 601. Together, they form a completely closed welding environment, which effectively isolates the welding area from the outside air flow and provides a stable environment for the welding process. After the welding operation is completed, the rotary motor 300 executes the reverse rotation command, and the circular rotating bar 507 rotates in the reverse direction. At this time, the top block 603 will contact the reset structure of the abutment block 605 during the reverse rotation and apply force to push the abutment block 605 and the second isolation frame 602 connected to it to rotate in the reverse direction, so that it returns from the closed state to the initial open position, completing a complete opening and closing cycle.

[0026] Example 3, as Figure 10As shown, based on Embodiment 2, the top of the connecting block 508 is equipped with an exhaust assembly 700 for discharging harmful air. The exhaust assembly 700 includes an L-shaped connecting rod 702 slidably mounted on the top of the welding head 511 and an exhaust pipe 701 fixedly mounted on the top of the connecting block 508. A piston block 703 is fixedly mounted on the end of the L-shaped connecting rod 702 away from the welding head 511. The piston block 703 is located inside the exhaust pipe 701, and the piston block 703 is slidably connected to the interior of the exhaust pipe 701. The piston block 703 is precisely fitted into the exhaust pipe 701. Inside the exhaust pipe 701, the piston block 703 slides within the exhaust pipe 701, allowing it to move synchronously and precisely in a linear fashion with the reciprocating motion of the welding head 511. A one-way valve 704 is located on the left side of the exhaust pipe 701 to control the intake of external air or specific gases, while a two-way valve 705 is located at the top of the exhaust pipe 701 to control the directional discharge of treated or harmful gases. These two valves work together to form an efficient and controllable gas flow management channel. By setting up the exhaust assembly 700, the reciprocating motion of the welding head 511 drives the L-shaped connecting rod 702 and the piston block 703 to slide within the exhaust pipe 701. Combined with the opening and closing of the one-way valve 704 and the two-way valve 705, real-time intake and directional discharge of harmful gases are achieved, preventing the accumulation of harmful gases and ensuring the health and safety of operators.

[0027] In practical use, when the rotary motor 300 starts in the forward direction, the welding head 511, driven by the lever 510 and the corrugated groove, begins to move up and down in a stable and regular manner. The up and down reciprocating motion of the welding head 511 directly drives the L-shaped connecting rod 702 to move up and down synchronously with equal amplitude. The reciprocating motion of the L-shaped connecting rod 702 is further transmitted to the piston block 703, driving the piston block 703 to move up and down linearly along the transverse direction of the exhaust pipe 701 within the internal chamber of the exhaust pipe 701. During the intake phase of the exhaust assembly, that is, when the piston block 703 moves away from the exhaust pipe... As the exhaust pipe 701 slides downwards, the volume of the chamber inside the exhaust pipe 701 located between the piston block 703 and the left air inlet increases significantly, creating a local negative pressure environment within this chamber. Under the strong suction of this negative pressure, harmful gases generated and accumulated in the welding area due to the high-temperature welding process are efficiently drawn into the internal chamber of the exhaust pipe 701 through a specially designed one-way valve 704 on the left side of the exhaust pipe 701. The design characteristics of the one-way valve 704 ensure that the gas can only flow into the exhaust pipe 701 from the external welding area in one direction. At the same time, the one-way valve located at the top of the exhaust pipe 701... Valve 705, with its unidirectional flow from the inside of the exhaust pipe to the outside, is closed during the intake negative pressure phase. This effectively prevents external air from flowing back in from the top, ensuring that harmful gases are directionally and completely drawn into the collection chamber without leakage or escape from the top. Subsequently, during the exhaust phase of the exhaust assembly, as piston block 703 slides upward inside exhaust pipe 701, the volume of the chamber containing the harmful gases begins to decrease, and the internal pressure rapidly increases. The harmful gases sealed within the chamber gain sufficient exhaust power under the upward compression of piston block 703, allowing them to enter the exhaust phase. The exhaust gas is forced upward through the one-way valve 705 located at the top of the exhaust pipe 701, and is discharged directionally to the connected external exhaust gas treatment system or safe emission area. During this process, the one-way valve 704 automatically closes due to its one-way nature, reliably preventing high-pressure gas from leaking back into the welding area from the air inlet, avoiding the backflow and secondary pollution of harmful gases. At the same time, it also prevents harmful gases from accumulating near the welding point, thereby preventing the gas from interfering with, oxidizing or polluting the weld pool, ensuring the uniformity and reliability of the weld joint, and playing a positive auxiliary role in maintaining and improving the overall welding quality.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A chip welding device based on intelligent manufacturing, comprising a worktable, a motherboard fixedly mounted on the top of the worktable, rotary motors arranged on both sides of the motherboard, clamping blocks fixedly connected to the output ends of the rotary motors, and a rotary welding device arranged inside the motherboard, characterized in that, The rotary welding device includes a pulley 1 mounted in the middle of the output end of a rotary motor, a transmission rod rotatably mounted on the inner wall of the main board, and a circular frame fixedly mounted on the inner wall of the main board. A pulley 2 is mounted on the upper side of the transmission rod. The pulley 1 and pulley 2 are connected by a transmission belt. A transmission gear is mounted on the lower side of the transmission rod. A circular rotating bar is rotatably mounted on the inner wall of the circular frame. A connecting block is fixedly mounted on the inner wall of the circular rotating bar. A welding head is slidably mounted on the inner side of the connecting block. A lever is fixedly connected to the left side of the welding head. A lever shaft is provided in the middle of the lever.

2. The chip welding device based on intelligent manufacturing according to claim 1, characterized in that, The inner wall of the circular frame is provided with a corrugated groove, and the side of the lever away from the welding head is located inside the corrugated groove.

3. The chip welding device based on intelligent manufacturing according to claim 2, characterized in that, The top of the circular rotating bar has teeth, and the transmission gear meshes with the teeth.

4. The chip welding device based on intelligent manufacturing according to claim 3, characterized in that, The transmission rod is rotatably connected to the circular frame, and the bottom of the worktable is provided with bottom corners.

5. The chip welding device based on intelligent manufacturing according to claim 4, characterized in that, The inner wall of the motherboard is equipped with an isolation device for isolating the soldering environment.

6. The chip welding device based on intelligent manufacturing according to claim 5, characterized in that, The isolation device includes an isolation frame one fixedly installed on the inner wall of the main board, a top block fixedly installed on the top of the circular rotating bar, and an L-shaped top rod fixedly installed on the top of the circular frame. An isolation frame two is rotatably installed on the inner wall of the isolation frame one, and a triangular slider is slidably installed on the inner wall of the isolation frame two. A stop block is fixedly installed on the right side of the triangular slider.

7. The chip welding device based on intelligent manufacturing according to claim 6, characterized in that, The inclined surface of the triangular slider contacts and engages with the L-shaped top rod, and both the first and second isolation frames are provided with semi-circular exhaust ports.

8. The chip welding device based on intelligent manufacturing according to claim 7, characterized in that, The top of the connecting block is equipped with an exhaust assembly for discharging harmful air.

9. The chip welding device based on intelligent manufacturing according to claim 8, characterized in that, The exhaust assembly includes an L-shaped connecting rod slidably mounted on the top of the welding head and an exhaust pipe fixedly mounted on the top of the connecting block. A piston block is fixedly mounted on the end of the L-shaped connecting rod away from the welding head. A one-way valve is provided on the left side of the exhaust pipe, and a two-way valve is provided on the top of the exhaust pipe.

10. The chip welding device based on intelligent manufacturing according to claim 9, characterized in that, The piston block is located inside the exhaust pipe, and the piston block is slidably connected to the inside of the exhaust pipe.

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