film expanding mechanism

Abstract

The application belongs to the technical field of semiconductor and discloses a film expanding mechanism. The film expanding mechanism comprises a mounting seat, an angle adjusting unit, a film expanding unit and a lifting adjusting unit. A rotating base plate of the angle adjusting unit is rotatably arranged on the mounting seat. A film expanding ring of the film expanding unit is fixedly arranged on the rotating base plate. A bearing mounting plate is located at the periphery of the film expanding ring. One end of a guide column is fixedly connected with the bearing mounting plate, and the other end of the guide column is slidably arranged through the rotating base plate. A material sheet pressing assembly is fixedly arranged on the bearing mounting plate. A film expanding pressing plate of the lifting adjusting unit is arranged on the mounting seat. A film expanding pressing wheel is rotatably arranged on a mounting shaft of the film expanding pressing plate. A wheel surface of the film expanding pressing wheel is arranged on the outer edge of the bearing mounting plate and can roll. The lifting adjusting unit is used for driving the material sheet pressing assembly to move downward along the vertical direction and stretch and expand the blue film of the patch assembly. The application corrects the placing angle of the patch assembly, tightens the blue film and facilitates accurate grabbing of the core particle.

Description

Technical Field

[0001] This invention relates to the field of semiconductor technology, and more particularly to a film expansion mechanism. Background Technology

[0002] The chip assembly includes a blue film and a chip ring, with the chip ring located at the outer edge of the blue film and fixedly connected to it. In existing chip sorting processes, multiple chips to be sorted are neatly arranged on the blue film. The blue film, as a special carrier material, possesses unique adhesion and flexibility, enabling it to firmly adhere and fix the chips to its surface, providing stable support for subsequent gripping operations. The task of gripping the chips is typically accomplished by gripping mechanisms such as suction cups or robotic arms. These gripping mechanisms identify and locate each chip on the blue film, and then carefully remove the chip from the blue film by applying appropriate suction or mechanical force. The removed chips are then transported to an inspection and sorting station. Based on the inspection results, good chips that meet the quality standards are selected, while substandard chips are rejected, ensuring that only high-quality chips can enter subsequent production stages.

[0003] However, on the one hand, due to the angular error between the placement position of the surface mount assembly and the gripping mechanism, the assembly needs to be manually rearranged to the correct angle, which is time-consuming and labor-intensive. On the other hand, when the gripping mechanism applies force to a chip and removes it from the blue film, the chip experiences a pulling force. This pulling force not only acts on the removed chip itself but is also transmitted to the blue film through the adhesive points between the chip and the blue film. Because the blue film itself has a certain degree of flexibility, it will deform after being subjected to the pulling force. Once the blue film deforms, the positions of the other chips that were originally neatly arranged on the blue film will change accordingly, causing the gripping mechanism to be unable to accurately grip the chips according to the predetermined program, resulting in gripping failure or incorrect gripping. This not only reduces production efficiency and increases production costs but may also damage the chips, further affecting the quality of the finished chip. Summary of the Invention

[0004] The purpose of this invention is to provide a film expansion mechanism that can not only correct the placement angle of the patch assembly, but also tighten the blue film of the patch assembly, so that the gripping mechanism can accurately grip the core.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The film expansion mechanism includes:

[0007] Mounting base;

[0008] An angle adjustment unit includes a rotating base plate, which is rotatably mounted on the mounting base;

[0009] The film expansion unit includes an expansion ring, a support mounting plate, a guide post, and a sheet clamping assembly. The expansion ring is fixedly mounted on the rotating substrate. The support mounting plate is located around the expansion ring. One end of the guide post is fixedly connected to the support mounting plate, and the other end of the guide post slides through the rotating substrate. The sheet clamping assembly is fixedly mounted on the support mounting plate and is used to clamp and fix the sheet ring of the patch assembly.

[0010] The lifting and adjusting unit includes an expanding film plate and an expanding film roller. The expanding film plate is mounted on the mounting base and can be lifted and lowered in the vertical direction. The expanding film plate is provided with a mounting shaft, and the expanding film roller is rotatably mounted on the mounting shaft. The supporting mounting plate is placed on the expanding film plate. The wheel surface of the expanding film roller presses against the outer edge of the supporting mounting plate and can roll. The lifting and adjusting unit is used to drive the sheet pressing assembly to move downward in the vertical direction and stretch and expand the blue film of the patch assembly.

[0011] As an optional solution for the film expansion mechanism, the lifting adjustment unit further includes:

[0012] A floating block, which is mounted on the film expanding plate, has a threaded hole;

[0013] A lead screw, one end of which is rotatably mounted on the mounting base, and the other end of which is threadedly connected to the threaded hole;

[0014] A first drive motor is mounted on the mounting base and connected to the lead screw drive.

[0015] As an optional solution for the film expansion mechanism, the film expansion plate is provided with an insertion hole and at least two connecting holes, the at least two connecting holes being arranged circumferentially with the insertion hole as the center, the upper end of the floating block being movably inserted into the insertion hole, and the flange edge of the floating block being provided with at least two through holes. The lifting adjustment unit further includes:

[0016] A limiting pin with a limiting head, the limiting pin passing through the through hole and connecting to the connecting hole, wherein the diameter of the limiting head is larger than the inner diameter of the through hole;

[0017] Several compression springs are provided, one end of which is connected to the expanding plate and the other end of which is connected to the flange of the floating block. The compression springs always have the tendency to stop the flange of the floating block at the limiting head.

[0018] As an optional solution for the film expansion mechanism, the film expansion plate is provided with a number of floating blocks spaced circumferentially around the film expansion ring, and the mounting base is provided with a number of lead screws spaced circumferentially around the film expansion ring, and the lead screws are threadedly connected to the corresponding floating blocks.

[0019] As an optional solution for the film expansion mechanism, each lead screw is fixedly fitted with a synchronous pulley, and the lifting adjustment unit further includes:

[0020] A synchronous belt is simultaneously wound around several synchronous pulleys, and the first drive motor is connected to one of the lead screws.

[0021] As an optional solution for the film expansion mechanism, the film expansion plate is provided with an arc-shaped plate, the mounting shaft is fixedly mounted on the arc-shaped plate and extends radially along the arc-shaped plate, the arc-shaped plate surrounds and forms a limiting range, and the bearing mounting plate is located within the limiting range.

[0022] As an optional solution for the film expansion mechanism, the arc-shaped plate is provided with a number of mounting shafts spaced circumferentially, and each mounting shaft is rotatably provided with a film expansion pressure roller.

[0023] As an optional solution for the film expansion mechanism, a plurality of guide posts are provided between the support mounting plate and the rotating base plate.

[0024] As an optional solution for the film expansion mechanism, the sheet pressing assembly includes:

[0025] A sheet support plate, wherein the sheet support plate is fixedly mounted on the support mounting plate;

[0026] A sheet pressure plate is provided, which is detachably connected to the sheet support plate. A sheet ring for clamping the patch assembly is located between the sheet pressure plate and the sheet support plate.

[0027] As an optional solution for the film expansion mechanism, the rotating substrate is an annular plate, and the angle adjustment unit further includes:

[0028] A second drive motor is mounted on the mounting base;

[0029] A pulley, which is coaxially mounted on the output shaft of the second drive motor;

[0030] A transmission belt is simultaneously wound around the outer wall of both the pulley and the rotating base plate.

[0031] The beneficial effects of this invention are:

[0032] The film expansion mechanism provided by this invention rotatably mounts the rotating base plate of the angle adjustment unit onto the mounting base via bearings. The sheet pressing assembly is mounted onto the carrier mounting plate, which is placed on the film expansion pressure plate of the lifting adjustment unit. The carrier mounting plate is connected to the rotating base plate via guide posts. After fixing the sheet ring of the patch assembly to the sheet pressing assembly, rotating the rotating base plate allows the film expansion ring, carrier mounting plate, and sheet pressing assembly to rotate simultaneously, thereby adjusting the placement angle of the patch assembly on the film expansion mechanism. This eliminates the need for manual repositioning, improving the placement speed and accuracy of the patch assembly. The film expansion roller on the film expansion pressure plate presses against the outer edge of the carrier mounting plate and can rotate with the carrier mounting plate, avoiding structural interference. By lowering the film-expanding plate of the lifting adjustment unit vertically, the film-expanding roller simultaneously presses down on the bearing mounting plate, causing the bearing mounting plate and the sheet clamping assembly to descend. The film-expanding ring can hold the blue film of the patch assembly and stretch and expand the blue film, which not only increases the spacing between the core particles, but also prevents the blue film from deforming after being stretched. This can tighten the blue film of the patch assembly, making it easier for the gripping mechanism to accurately grip the core particles. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0034] Figure 1 This is a first-view assembly schematic diagram of the film expansion mechanism in an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0036] Figure 3 This is a schematic diagram of the film expansion mechanism from a second perspective in an embodiment of the present invention;

[0037] Figure 4 This is an exploded view of the film expansion mechanism in an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of the film expansion ring mounted on the rotating substrate in an embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the support mounting plate being mounted on the rotating base plate via guide posts in an embodiment of the present invention;

[0040] Figure 7 This is an exploded view of the expansion plate and floating block and other related parts from a first perspective in an embodiment of the present invention;

[0041] Figure 8 This is an exploded view of the expansion plate and floating block and other related parts from a second perspective in an embodiment of the present invention.

[0042] Figure label:

[0043] 100. Surface mount assembly; 101. Sheet ring; 102. Blue film;

[0044] 1. Mounting base; 2. Angle adjustment unit; 3. Film expansion unit; 4. Lifting adjustment unit;

[0045] 21. Rotating base plate; 22. Second drive motor; 23. Pulley; 24. Transmission belt;

[0046] 31. Expanding ring; 32. Support mounting plate; 33. Guide post; 34. Sheet support plate; 35. Sheet pressing plate;

[0047] 41. Expanding film pressure plate; 411. Insertion hole; 412. Connecting hole; 413. First groove; 414. Arc-shaped plate; 42. Expanding film pressure roller; 43. Floating block; 431. Threaded hole; 432. Through hole; 433. Second groove; 44. Lead screw; 45. First drive motor; 46. Synchronous pulley; 47. Synchronous belt; 48. Mounting shaft; 49. Limit pin; 410. Compression spring. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0052] In precision electronics manufacturing fields such as semiconductor manufacturing, surface mount components (SMTs) play a crucial role in the chip sorting process. SMTs mainly consist of a blue film and a chip ring. The chip ring is precisely positioned at the outer edge of the blue film and is firmly fixed to it through a specific process. This design provides a stable structural foundation for subsequent chip processing.

[0053] In the existing core sorting process, multiple cores to be sorted are arranged in a highly neat and orderly manner on a blue membrane. The blue membrane, as a special and crucial load-bearing material, possesses unique physical properties. Its unique adhesiveness, carefully formulated, can firmly bond and fix the cores to its surface without damaging them. This stable adhesion provides a reliable support platform for subsequent gripping operations, ensuring that the cores do not easily shift during gripping. Simultaneously, the flexibility of the blue membrane is strictly controlled, allowing it to adapt to a certain degree of deformation while also restoring its original shape as much as possible after external force is removed, ensuring a stable load-bearing environment for the cores within normal operating ranges.

[0054] The crucial task of gripping the chips is typically accomplished by high-precision gripping mechanisms such as suction cups or robotic arms. These mechanisms can quickly and accurately identify and locate each chip on the blue film. After successful positioning, the gripping mechanism applies appropriate suction or mechanical force based on the chip's characteristics and process requirements. For example, for small and fragile chips, gentle suction is used to carefully remove them from the blue film via vacuum adsorption; while for larger, more robust chips, a robotic arm may be used to apply appropriate mechanical force for gripping. The removed chips are then precisely transported to the inspection and sorting station, where they undergo comprehensive and meticulous inspection. The inspection covers multiple aspects, including the chip's electrical performance, physical dimensions, and appearance defects. Based on the rigorous inspection results, those meeting quality standards are carefully selected for subsequent, more refined production stages; while those failing to meet the requirements are rejected, ensuring that only high-quality chips participate in the manufacturing of the final chip, thereby guaranteeing the high quality and stability of the finished chip.

[0055] However, in actual production, the existing chip sorting process faces some pressing problems. Firstly, due to the influence of various complex factors such as equipment precision, operator skill level, and environmental factors during placement, the chip assembly's position relative to the gripping mechanism often exhibits a certain angular error. This seemingly minor angular error can significantly impact subsequent gripping operations. Currently, to ensure accurate chip gripping, the chip assembly is typically manually repositioned to the correct angle. This manual operation is not only time-consuming and labor-intensive, greatly reducing production efficiency, but also prone to introducing new errors due to improper handling, further affecting gripping accuracy.

[0056] On the other hand, when the gripping mechanism applies force to a core particle and removes it from the blue membrane, the core particle will inevitably be subjected to a tensile force. This tensile force is generated by the interaction between the gripping mechanism and the core particle, as well as the adhesion between the core particle and the blue membrane. This tensile force does not only act on the removed core particle itself, but is also rapidly transmitted to the blue membrane through the tight adhesive points between the core particle and the blue membrane. Because the blue membrane itself has a certain degree of flexibility, after being subjected to tensile force, it will deform significantly like a stretched elastic film. This deformation is localized and irregular, and its degree and range are affected by various factors such as the magnitude and direction of the tensile force and the characteristics of the blue membrane itself.

[0057] Once the blue membrane deforms, the positions of the other core particles that were originally neatly arranged on it will change unpredictably. These core particles may shift, tilt, or even flip on the blue membrane, causing their actual positions on the membrane to deviate from the predetermined program positions of the gripping mechanism. The gripping mechanism grips the core particles according to a pre-set program and fixed coordinate positions. When the core particle position changes, the gripping mechanism cannot accurately grip the core particle according to the predetermined program. This situation may lead to two adverse consequences: first, gripping failure, meaning the gripping mechanism cannot successfully grip the core particle, preventing it from entering the subsequent inspection and sorting stages, causing a production interruption; second, gripping error, meaning the gripping mechanism grips the wrong core particle or the gripping position is inaccurate, leading to inaccurate subsequent inspection and sorting results, misclassifying good products as defective products or vice versa.

[0058] These adverse consequences not only directly reduce production efficiency and increase production costs—because gripping failures and errors lead to production process interruptions and repetitive operations, requiring more time and manpower to handle these issues, while also wasting a significant amount of raw materials and energy—but also, during the gripping process, the gripping mechanism may apply inappropriate forces to the die, potentially damaging it. This damage could be microscopic structural destruction or macroscopic appearance defects; either way, it will further affect the quality of the finished chip.

[0059] To correct the placement angle of the patch assembly and to tension the blue film of the patch assembly, facilitating accurate gripping of the core by the gripping mechanism, this embodiment provides a film expansion mechanism, which is described below in conjunction with... Figures 1 to 8 The specific content of this embodiment will be described in detail.

[0060] The film expansion mechanism in this embodiment includes a mounting base 1, an angle adjustment unit 2, a film expansion unit 3, and a lifting adjustment unit 4. The angle adjustment unit 2 includes a rotating base plate 21, which is rotatably mounted on the mounting base 1 via high-precision bearings. This rotatable connection ensures that the rotating base plate 21 can achieve flexible and stable rotational movement on the mounting base 1, providing a solid foundation for subsequent angle adjustment functions. The film expansion unit 3 includes an expansion ring 31, a support mounting plate 32, guide posts 33, and a sheet pressing assembly. The expansion ring 31 is fixedly mounted on the rotating base plate 21 and serves as a key component that directly acts on the blue film 102 of the patch assembly 100. The support mounting plate 32 is located around the expansion ring 31 and serves to support and connect other components. One end of the guide post 33 is fixedly connected to the support mounting plate 32, and the other end of the guide post 33 slides through the rotating base plate 21. This design allows the support mounting plate 32 to maintain a relatively stable trajectory during movement, while also allowing relative sliding with the rotating base plate 21, providing the necessary degrees of freedom for achieving the film expansion function. The sheet clamping assembly is fixedly mounted on the support mounting plate 32 and is used to clamp and fix the sheet ring 101 of the patch assembly 100, ensuring that the sheet ring 101 will not shift during the film expansion process, thereby ensuring the stability and accuracy of the entire film expansion process. The lifting adjustment unit 4 includes a film expansion pressure plate 41 and a film expansion pressure roller 42. The film expansion pressure plate 41 is mounted on the mounting base 1 and can be raised and lowered in the vertical direction. Since the film expansion pressure plate 41 has the ability to be raised and lowered in the vertical direction, this characteristic allows it to adjust its height according to actual needs, thereby driving the movement of other related components. An expansion plate 41 is equipped with a mounting shaft 48, on which an expansion roller 42 is rotatably mounted. This rotatable arrangement allows the expansion roller 42 to roll freely under external force, reducing frictional resistance. A support mounting plate 32 is placed on the expansion plate 41, and the wheel surface of the expansion roller 42 presses against the outer edge of the support mounting plate 32 and can roll. This design avoids problems such as poor movement or component damage caused by structural interference during rotation, ensuring the stability and reliability of the entire expansion mechanism during angle adjustment. The lifting adjustment unit 4 is used to drive the sheet pressing assembly to move vertically downward and stretch the blue film 102 of the expansion patch assembly 100.

[0061] In short, the film expansion mechanism provided by this invention, after fixing the sheet ring 101 of the patch assembly 100 to the sheet clamping assembly, rotates the rotating base plate 21. Due to the tight connection between the components, the film expansion ring 31, the support mounting plate 32, and the sheet clamping assembly rotate simultaneously. This process achieves automatic adjustment of the placement angle of the patch assembly 100 on the film expansion mechanism, eliminating the need for manual repositioning. This not only greatly improves the placement speed of the patch assembly 100 and reduces the time and labor intensity of manual operation, but also significantly improves the placement accuracy due to the much higher precision of mechanical adjustment compared to manual operation, laying a good foundation for subsequent film expansion and gripping operations. By lowering the film expansion pressure plate 41 of the lifting adjustment unit 4 vertically, the film expansion pressure roller 42 simultaneously presses down on the support mounting plate 32, thereby lowering the support mounting plate 32 and the sheet clamping assembly. During this process, the film expansion ring 31 can press against the blue film 102 of the patch assembly 100, subjecting the blue film 102 to an outward tensile force, thus stretching and expanding the blue film 102. This operation brings several significant technical benefits. Firstly, after the blue membrane 102 is stretched and expanded, the spacing between the core particles, which were originally closely arranged on the blue membrane 102, increases. This increased spacing provides more space and a clearer field of view for the subsequent gripping mechanism, allowing it to more easily and accurately locate and grasp each core particle, greatly improving the success rate and efficiency of the grasping process. Secondly, it prevents the blue membrane 102 from deforming under tension. In traditional operations, when the gripping mechanism applies tension to the core particles, the blue membrane 102 often deforms due to its flexibility, causing changes in the position of other core particles and affecting gripping accuracy. This membrane expansion mechanism, by tensioning the blue membrane 102, ensures it maintains a relatively stable shape under tension, preventing easy deformation and thus ensuring the accuracy of the core particle position, facilitating accurate grasping of the core particles by the gripping mechanism. This not only further improves production efficiency and reduces repetitive operations and time waste caused by grabbing failures or errors, but also reduces the risk of damage to the chip due to improper operation, ensuring the quality of the chip and thus providing a strong guarantee for manufacturing high-quality finished chips, effectively improving the stability and reliability of the entire electronic chip manufacturing process.

[0062] Furthermore, the lifting adjustment unit 4 also includes a floating block 43, a lead screw 44, and a first drive motor 45. The floating block 43 is mounted on the expanding film plate 41 and has a threaded hole 431. One end of the lead screw 44 is rotatably mounted on the mounting base 1, and the other end of the lead screw 44 is threadedly connected to the threaded hole 431. This connection method can convert the rotational motion of the lead screw 44 into the linear motion of the floating block 43. The first drive motor 45 is securely mounted on the mounting base 1 and is driven by the lead screw 44 (the transmission method can be, but is not limited to, belt drive or chain drive, etc.). In actual operation, since the lead screw 44 is threadedly connected to the floating block 43 on the expanding film plate 41, when the first drive motor 45 starts and drives the lead screw 44 to rotate, according to the principle of threaded transmission, the rotational motion of the lead screw 44 will be converted into the linear motion of the floating block 43 along the axis of the lead screw 44. Since the floating block 43 is mounted on the expanding film plate 41, it can drive the expanding film plate 41 to move vertically. When the expanding platen 41 descends, the expanding roller 42 descends accordingly and applies pressure to the mounting plate 32, ultimately stretching and expanding the blue film 102 of the patch assembly 100. When it is necessary to release and reset, the first drive motor 45 rotates in the opposite direction, driving the expanding platen 41 to rise, and the blue film 102 returns to its original state. This lifting and adjusting method, achieved through the cooperation of the first drive motor 45, the lead screw 44, and the floating block 43, has the advantages of high transmission accuracy, smooth movement, and convenient control. It can accurately control the lifting height and speed of the expanding platen 41, thereby meeting the film expansion requirements of patch assemblies of different specifications.

[0063] Furthermore, the expanding film plate 41 is provided with an insertion hole 411 and at least two connecting holes 412. These connecting holes 412 are arranged circumferentially around the insertion hole 411, forming a symmetrical and stable layout. The upper end of the floating block 43 is movably inserted into the insertion hole 411. This movable insertion method allows the floating block 43 to have a certain degree of freedom of movement on the expanding film plate 41. At the same time, the flange edge of the floating block 43 is provided with at least two through holes 432. These through holes 432 provide space for the subsequent installation of the limiting pin 49. The lifting adjustment unit 4 also includes a limiting pin 49 with a limiting head and several compression springs 410. The limiting pin 49 passes through the through hole 432 and connects to the connecting hole 412. The diameter of the limiting head is larger than the inner diameter of the through hole 432. This design allows the limiting pin 49 to play a certain limiting role in connecting the floating block 43 and the expanding film plate 41, preventing it from falling off the expanding film plate 41. Several compression springs 410 are evenly distributed between the flange edges of the expanding film plate 41 and the floating block 43. One end of the compression spring 410 is connected to the expanding film plate 41, and the other end is connected to the flange edge of the floating block 43. The compression springs 410 are always in a certain pre-compression state, which tends to stop the flange edge of the floating block 43 at the limit head, thereby ensuring that the floating block 43 and the expanding film plate 41 maintain a relatively stable positional relationship under normal conditions.

[0064] During the film expansion process, due to the large area of ​​the expanding pressure plate 41, uneven force distribution inevitably occurs during its downward movement. For example, at the contact points between the blue film 102 and the expanding ring 31, differences in friction or the inherent unevenness of the blue film 102 itself may cause variations in the resistance experienced by the expanding pressure plate 41 at different locations, leading to a tendency for the expanding pressure plate 41 to tilt. If the floating block 43 and the expanding pressure plate 41 are rigidly connected, meaning there is no buffering or compensation mechanism between them, then the rotation of the lead screw 44 will be severely hindered when the expanding pressure plate 41 tilts. Because the rigid connection makes the floating block 43 and the expanding pressure plate 41 a rigid unit, tilting will cause the threaded transmission between the lead screw 44 and the floating block 43 to experience additional lateral force. This lateral force may cause the threads to deform, jam, or even damage components such as the lead screw 44 and the floating block 43, seriously affecting the normal operation and service life of the expanding mechanism. To avoid this situation, a limiting pin 49 and a compression spring 410 are added to the floating block 43. Under the action of the compression spring 410, a certain gap is maintained between the floating block 43 and the expanding plate 41, which provides buffer space for the slight tilt of the expanding plate 41. When the expanding plate 41 is subjected to uneven force and tilts, the compression spring 410 will undergo elastic deformation, allowing the floating block 43 to make slight movements and adjustments relative to the expanding plate 41 within a certain range. This self-compensation mechanism can eliminate the lateral force caused by tilting in time, so that the lead screw 44 always maintains a relatively stable rotational state and will not jam. In this way, not only is the stability and reliability of the expanding mechanism guaranteed during the expanding process, enabling continuous and smooth stretching and expansion of the blue film 102, but also wear and damage between components are reduced, the service life of the entire expanding mechanism is extended, equipment maintenance costs and downtime are reduced, and production efficiency and product quality are improved. At the same time, this design also enhances the adaptability of the film expansion mechanism to different working conditions, enabling it to work stably in various complex environments and providing strong support for high-precision production processes such as electronic chip manufacturing.

[0065] For example, the expansion plate 41 has a first groove 413 at one end facing the flange of the floating block 43, and the floating block 43 has a second groove 433 at its flange. One end of the compression spring 410 is embedded in the first groove 413, and the other end is embedded in the second groove 433. This embedding method greatly enhances the connection between the compression spring 410 and the expansion plate 41 and the floating block 43. During the operation of the expansion mechanism, the expansion plate 41 will frequently move up and down, and will also be subjected to various forces generated during the stretching and expansion of the blue film 102. These forces will be transmitted to the compression spring 410 through the floating block 43. If the compression spring 410 is simply placed between the two without an effective fixing method, under long-term stress, the compression spring 410 is prone to displacement or falling off, causing the buffering and compensation functions to fail, thereby affecting the normal operation of the entire expansion mechanism. By embedding both ends of the compression spring 410 into the grooves, the compression spring 410 is constrained in all directions, ensuring it remains in the correct position and does not easily shift even under significant external impact, thus guaranteeing the stability and reliability of the film expansion mechanism. This design also helps improve the lifting accuracy of the film expansion plate 41. Because the compression spring 410 is securely connected to the film expansion plate 41 and the floating block 43, when the first drive motor 45 drives the lead screw 44 to rotate, thereby driving the film expansion plate 41 to rise and fall, the compression spring 410 can extend and retract according to the predetermined elasticity characteristics, without generating additional elasticity fluctuations due to loose connections. This stable elasticity transmission makes the movement of the film expansion plate 41 smoother and more precise, accurately lifting and lowering according to the set parameters, thereby achieving precise control over the stretching and expansion of the blue film 102 of the patch assembly 100. Furthermore, this design extends the service life of the compression spring 410 and the entire film expansion mechanism, reducing maintenance and operating costs. Because the compression spring 410 is securely embedded in the groove, contact and friction with the external environment are reduced, lowering the probability of spring damage due to wear, corrosion, and other factors. Simultaneously, the stable connection method reduces the possibility of damage to other components caused by spring displacement or detachment, such as preventing the spring from jamming the lead screw 44, thereby reducing the equipment failure rate. Furthermore, this design makes replacing the compression spring 410 more convenient and quick. When the compression spring 410 reaches the end of its service life and needs replacement, simply insert the new compression spring 410 accurately into the groove; no complex adjustments to other components are required, further reducing maintenance costs and difficulty.

[0066] Furthermore, several floating blocks 43 are circumferentially spaced on the expanding film plate 41 with the expanding film ring 31 as the center, and several lead screws 44 are circumferentially spaced on the mounting base 1 with the expanding film ring 31 as the center. The lead screws 44 are threadedly connected to the corresponding floating blocks 43. By adding multiple floating blocks 43 and multiple lead screws 44, the expanding film plate 41 can achieve more uniform force distribution during lifting and lowering. In the traditional single lead screw 44 drive structure, the force on the expanding film plate 41 is mainly concentrated at the part connected to the lead screw 44, while other parts are relatively less stressed. This uneven force distribution can easily lead to local deformation of the expanding film plate 41 during movement, thus affecting the stretching and expansion effect of the blue film 102. However, with the structure of multiple floating blocks 43 and lead screws 44, each floating block 43 can share a portion of the weight of the expanding film plate 41 and the reaction force generated when the blue film 102 stretches and expands. For example, when the expanding platen 41 descends to stretch the blue film 102, each floating block 43 simultaneously receives pressure from the expanding platen 41 and transmits this pressure evenly to the corresponding lead screw 44. The lead screw 44 then transmits the force to the mounting base 1, making the force distribution of the entire system more reasonable. This uniform force distribution can effectively reduce local stress concentration in the expanding platen 41, reduce the risk of deformation of the expanding platen 41, thereby improving the stability and reliability of the expanding process, ensuring that the blue film 102 can be stretched and expanded evenly, and guaranteeing the positional accuracy of each core on the patch assembly 100. The combined use of multiple floating blocks 43 and lead screws 44 can also keep the expanding platen 41 horizontal during lifting and achieve synchronous lifting. Since each floating block 43 is connected to the corresponding lead screw 44 through threaded transmission, when the first drive motor 45 drives the lead screw 44 to rotate, each lead screw 44 will rotate simultaneously, and through threaded transmission, the corresponding floating block 43 will produce the same linear motion. During the lifting and lowering process, each floating block 43 can move synchronously, so that the film expanding plate 41 always remains horizontal and avoids the film expanding plate 41 being in a tilted state.

[0067] Furthermore, each lead screw 44 is fixedly fitted with a synchronous pulley 46, and the lifting adjustment unit 4 also includes a synchronous belt 47, which is wound around several synchronous pulleys 46 simultaneously. The first drive motor 45 is connected to one of the lead screws 44. The addition of synchronous pulleys 46 and synchronous belt 47 can fundamentally ensure the synchronicity of the movement of multiple lead screws 44. Without a synchronous transmission device, each lead screw 44 relies on an independent drive source or transmission chain for driving. Due to the performance differences of each drive source, the transmission error of the transmission chain, and the precision of mechanical installation, it is difficult to ensure that each lead screw 44 can rotate completely synchronously. For example, there may be slight differences in the speed of different drive motors, or the gaps and elastic deformations in transmission methods such as gear transmission and belt transmission will cause the rotation speed of each lead screw 44 to be inconsistent. The combined transmission method of synchronous pulleys 46 and synchronous belt 47 effectively solves these problems. As long as the first drive motor 45 drives one of the lead screws 44 to rotate, the other lead screws 44 will rotate at the same speed and direction through the transmission of the synchronous belt 47, thus achieving highly synchronized movement of multiple lead screws 44. This synchronization is crucial for the smooth lifting and lowering of the film expansion plate 41, because if the movements of the various lead screws 44 are not synchronized, the film expansion plate 41 will experience tilting and swaying during the lifting and lowering process, seriously affecting the stretching and expansion effect of the blue film 102 and the quality of the patch assembly 100. The synchronous belt 47 transmission has a buffering and vibration absorption function, which can absorb the vibration and impact generated by the first drive motor 45 during start-up, braking and operation, reducing the impact of these vibrations and impacts on the lead screws 44 and other mechanical components. At the same time, the elasticity of the synchronous belt 47 can compensate for the transmission gap caused by mechanical installation errors or thermal deformation to a certain extent, making the entire transmission system more stable and reliable. Furthermore, the synchronous pulleys 46 and 47 have relatively simple structures and are easy to maintain. During long-term use, only periodic checks on the tension and wear of the synchronous belt 47 are needed, with timely adjustments and replacements to ensure the normal operation of the transmission system, reducing equipment maintenance costs and downtime. This transmission method also expands the load capacity of the film expansion mechanism: because the synchronous belt 47 can withstand greater tension, and multiple synchronous pulleys 46 and lead screws 44 share the load, the film expansion mechanism can withstand greater weight and force. For example, when processing larger, thicker blue film 102 patch assemblies 100, the film expansion plate 41 needs to provide greater pressure and tensile force. The transmission system of the synchronous pulleys 46 and 47 can reliably transmit these forces, ensuring the smooth progress of the film expansion process.

[0068] Furthermore, an arc-shaped plate 414 is provided on the film-expanding pressure plate 41. Mounting shafts 48 are securely fixed to the arc-shaped plate 414 by welding or bolting. Each mounting shaft 48 extends radially along the arc-shaped plate 414, which encloses a specific limiting zone. The shape and size of this limiting zone match the supporting mounting plate 32. The supporting mounting plate 32 is located within the limiting zone. Through its cooperation with the arc-shaped plate 414 and the film-expanding pressure roller 42, precise positioning on the film-expanding pressure plate 41 is achieved, facilitating the determination of the installation position of the supporting mounting plate 32 on the film-expanding pressure plate 41. When installing the supporting mounting plate 32, the operator only needs to place it within the limiting zone to ensure accurate positioning.

[0069] Furthermore, the arc-shaped plate 414 is circumferentially spaced with several mounting shafts 48, each mounting shaft 48 having a rotatable expanding pressure roller 42. By circumferentially spaced multiple expanding pressure rollers 42 on the arc-shaped plate 414, each expanding pressure roller 42 can independently apply a certain pressure to the supporting mounting plate 32. Since the expanding pressure rollers 42 are evenly distributed on the arc-shaped plate 414, the pressures they apply can complement and balance each other, making the pressure on the surface of the supporting mounting plate 32 more uniform.

[0070] It is understood that in this embodiment, the supporting mounting plate 32 is placed on the upper surface of the expanding plate 41 and located within the limiting range defined by the arc-shaped plate 414, and multiple expanding rollers 42 on the arc-shaped plate 414 press against the upper surface of the supporting mounting plate 32. When the rotating substrate 21 drives the supporting mounting plate 32 to rotate, the expanding rollers 42 move accordingly, ensuring that the expanding plate 41 does not rotate with it. When the expanding plate 41 moves downward, the expanding rollers 42 located above the supporting mounting plate 32 can drive the supporting mounting plate 32 to move downward.

[0071] Furthermore, a number of guide posts 33 are provided between the support mounting plate 32 and the rotating base plate 21. By adding multiple guide posts 33, it is further ensured that the support mounting plate 32 can only move up and down in the vertical direction.

[0072] Furthermore, the sheet clamping assembly includes a sheet support plate 34 and a sheet pressure plate 35, with the sheet support plate 34 fixedly mounted on the support mounting plate 32. The sheet pressure plate 35 is detachably connected to the sheet support plate 34, and the sheet pressure plate 35 and the sheet support plate 34 are used to clamp the sheet ring 101 of the patch assembly 100. Exemplarily, the sheet pressure plate 35 can be assembled onto the sheet support plate 34 using fasteners such as bolts or screws.

[0073] Furthermore, the rotating base plate 21 is an annular plate, and the angle adjustment unit 2 also includes a second drive motor 22, a pulley 23, and a transmission belt 24. The second drive motor 22 is mounted on the mounting base 1; the pulley 23 is coaxially mounted on the output shaft of the second drive motor 22. The transmission belt 24 is wound around both the pulley 23 and the outer wall of the rotating base plate 21. This structure enables precise angle adjustment of the rotating base plate 21. The second drive motor 22 serves as a power source, and the rotation of its output shaft can be precisely transmitted to the rotating base plate 21 through the pulley 23 and the transmission belt 24. Since the pulley 23 is coaxially mounted with the output shaft of the second drive motor 22, and there is a stable frictional transmission relationship between the transmission belt 24, the pulley 23, and the rotating base plate 21, the rotating base plate 21 will rotate precisely by a corresponding angle for every certain angle that the second drive motor 22 rotates.

[0074] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A film expansion mechanism, characterized in that, include: Mounting base (1); Angle adjustment unit (2) includes a rotating base plate (21), which is rotatably mounted on the mounting base (1); The film expansion unit (3) includes a film expansion ring (31), a support mounting plate (32), a guide post (33), and a sheet pressing assembly. The film expansion ring (31) is fixedly disposed on the rotating substrate (21). The support mounting plate (32) is located around the film expansion ring (31). One end of the guide post (33) is fixedly connected to the support mounting plate (32), and the other end of the guide post (33) slides through the rotating substrate (21). The sheet pressing assembly is fixedly disposed on the support mounting plate (32) and is used to clamp and fix the sheet ring (101) of the patch assembly (100). The lifting adjustment unit (4) includes a film expanding plate (41) and a film expanding roller (42). The film expanding plate (41) is disposed on the mounting base (1) and can be lifted and lowered in the vertical direction. The film expanding plate (41) is provided with a mounting shaft (48). The film expanding roller (42) is rotatably disposed on the mounting shaft (48). The bearing mounting plate (32) is placed on the film expanding plate (41). The wheel surface of the film expanding roller (42) is pressed against the outer edge of the bearing mounting plate (32) and can roll. The lifting adjustment unit (4) is used to drive the sheet pressing assembly to move down in the vertical direction and stretch and expand the blue film (102) of the patch assembly (100).

2. The film expansion mechanism according to claim 1, characterized in that, The lifting adjustment unit (4) also includes: A floating block (43) is mounted on the film expansion plate (41) and has a threaded hole (431). A lead screw (44), one end of which is rotatably mounted on the mounting base (1), and the other end of which is threadedly connected to the threaded hole (431). A first drive motor (45) is mounted on the mounting base (1) and is connected to the lead screw (44) for transmission.

3. The film expansion mechanism according to claim 2, characterized in that, The expanding plate (41) is provided with an insertion hole (411) and at least two connecting holes (412). The at least two connecting holes (412) are arranged circumferentially with the insertion hole (411) as the center. The upper end of the floating block (43) is movably inserted into the insertion hole (411). The flange edge of the floating block (43) is provided with at least two through holes (432). The lifting adjustment unit (4) further includes: A limiting pin (49) with a limiting head passes through the through hole (432) and connects to the connecting hole (412). The diameter of the limiting head is larger than the inner diameter of the through hole (432). Several compression springs (410) are provided, one end of which is connected to the expanding plate (41) and the other end of which is connected to the flange of the floating block (43). The compression springs (410) always have the tendency to stop the flange of the floating block (43) at the limiting head.

4. The film expansion mechanism according to claim 2, characterized in that, The film expanding plate (41) is provided with a plurality of floating blocks (43) spaced circumferentially around the film expanding ring (31), and the mounting base (1) is provided with a plurality of lead screws (44) spaced circumferentially around the film expanding ring (31), and the lead screws (44) are threadedly connected to the corresponding floating blocks (43).

5. The film expansion mechanism according to claim 4, characterized in that, Each lead screw (44) is fixedly fitted with a synchronous pulley (46), and the lifting adjustment unit (4) further includes: A timing belt (47) is simultaneously wound around several timing pulleys (46), and the first drive motor (45) is connected to one of the lead screws (44) for transmission.

6. The film expansion mechanism according to claim 1, characterized in that, An arc-shaped plate (414) is provided on the film expansion plate (41). The mounting shaft (48) is fixedly provided on the arc-shaped plate (414) and extends radially along the arc-shaped plate (414). The arc-shaped plate (414) surrounds and forms a limiting range. The bearing mounting plate (32) is located within the limiting range.

7. The film expansion mechanism according to claim 6, characterized in that, The arc-shaped plate (414) is provided with a plurality of mounting shafts (48) spaced apart circumferentially, and each mounting shaft (48) is provided with a film expanding pressure roller (42) rotatably mounted on it.

8. The film expansion mechanism according to claim 1, characterized in that, A plurality of guide posts (33) are provided between the support mounting plate (32) and the rotating base plate (21).

9. The film expansion mechanism according to claim 1, characterized in that, The sheet pressing assembly includes: A sheet support plate (34) is fixedly mounted on the support mounting plate (32); A sheet pressure plate (35) is detachably connected to the sheet support plate (34), and a sheet ring (101) of the patch assembly (100) is clamped between the sheet pressure plate (35) and the sheet support plate (34).

10. The film expansion mechanism according to any one of claims 1-9, characterized in that, The rotating base plate (21) is a circular plate, and the angle adjustment unit (2) further includes: The second drive motor (22) is mounted on the mounting base (1); A pulley (23) is coaxially mounted on the output shaft of the second drive motor (22); A transmission belt (24) is simultaneously wound around the outer wall of the pulley (23) and the rotating base plate (21).

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