Chip encapsulation and wafer punching production line
By integrating the process of the multi-station continuous stamping production line, the problems of burrs, size control and efficiency in chip packaging and testing ferrule manufacturing have been solved, realizing efficient and safe automated production and improving product quality and equipment utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN HEJU PRECISION ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-21
AI Technical Summary
The existing chip packaging and testing shrapnel manufacturing process suffers from problems such as excessive burrs, difficulty in controlling dimensions, low production efficiency, high scrap rate, significant safety hazards, and large equipment footprint, making it difficult to meet the needs of large-scale, high-efficiency production.
The multi-station continuous stamping production line integrates punching, forming, adjustment and cutting stations. Through technologies such as synchronous controllers, dense punch arrays, precision guiding systems and optical detection sensors, it realizes the automation and precision control of material feeding and processing.
It significantly improved production efficiency and product consistency, reduced scrap rate and equipment debugging difficulty, enhanced processing accuracy and safety, and optimized space utilization.
Smart Images
Figure CN224525766U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semiconductor packaging and testing technology, and in particular to a chip packaging and testing spring stamping production line. Background Technology
[0002] Currently, chip packaging and testing spring manufacturing primarily employs a process combining etching and single-stamping. This traditional process has significant technical drawbacks: Firstly, in the etching process, the inherent characteristics of chemical corrosion result in large burrs on the edges of the springs, making dimensional tolerances difficult to control and severely impacting product appearance quality and assembly accuracy. Secondly, in the single-stamping stage, each step requires a separate stamping operation, leading to low production efficiency and significant fluctuations in spring height due to limitations in the repeatability of the lower dead center position of the stamping press, directly affecting the spring's mechanical properties and electrical contact reliability. Furthermore, the existing process suffers from numerous manual intervention steps and significant production safety hazards, particularly the manual feeding step, which both restricts production efficiency and makes it difficult to guarantee feeding positioning accuracy. More importantly, the traditional single-stamping process is prone to cumulative errors during multi-step transitions, resulting in poor dimensional consistency of the springs and a high scrap rate. These shortcomings severely restrict the large-scale, efficient production of chip packaging and testing springs, necessitating the development of new manufacturing processes to address these issues. Utility Model Content
[0003] The main purpose of this invention is to propose a chip packaging and testing spring stamping production line, which aims to improve production efficiency, ensure processing accuracy, and reduce scrap rate.
[0004] To achieve the above objectives, the chip packaging and testing spring stamping production line proposed in this utility model has multiple workstations, including a feeding workstation, a punching workstation, a spring forming workstation, a spring adjusting workstation, and a cutting workstation arranged sequentially in the spring conveying direction, and the multiple workstations are arranged in a straight line to form a stamping channel.
[0005] The punching station integrates edge trimming and shape punching functions, and the spring forming station and spring adjusting station are connected in sequence to complete punching, forming, adjusting and cutting actions in a single stroke of the punch press.
[0006] In one embodiment, the feeding station includes two feeding rollers arranged opposite each other perpendicular to the spring conveying direction, and a feeding channel is formed between the two feeding rollers for clamping and feeding the spring through the feeding channel.
[0007] In one embodiment, the loading station further includes:
[0008] A synchronous controller is connected to the feeding roller and communicates with the punch press to trigger the feeding action when the crankshaft of the punch press rotates to a preset angle.
[0009] In one embodiment, the punching station includes a plurality of punches, which are arranged in an array perpendicular to the spring conveying direction.
[0010] In one embodiment, the spacing of the punch array is matched with the center distance of the spring sheet, and the center distance between two adjacent punches is 4.00±0.01mm.
[0011] In one embodiment, the spring forming station includes a punch and a die perpendicular to the spring conveying direction and arranged opposite to each other, for stamping the spring during opposite movements, wherein the gap between the punch and the die is 5%-8% of the material thickness, and the surface of the die is coated; and / or,
[0012] The spring adjustment station includes a limiting block and an adjusting screw, and the displacement accuracy of the limiting block is ±0.01mm.
[0013] In one embodiment, the cutting station includes a beveled blade structure, the beveled blade structure includes a cutting edge, and the extending direction of the cutting edge is set at an angle to the conveying direction of the spring sheet.
[0014] In one embodiment, multiple workstations are positioned by guide pins, and the clearance between the guide pins and the positioning holes is ≤0.005mm.
[0015] In one embodiment, the output end of the spring adjustment station is equipped with an optical detection sensor to monitor the spring height in real time.
[0016] In one embodiment, the length-to-width ratio of the base of the chip packaging and testing spring stamping production line is 3:1, and the end of the cutting station is connected to the finished product collection channel.
[0017] In this invention, raw materials are fed into the stamping channel by a feeding mechanism and then sequentially pass through various processing areas under the drive of the punch press. The punching station first removes excess material and forms the product outline; the forming station then plastically deforms the spring sheet; the adjustment station fine-tunes and corrects the formed part; and finally, the cutting station separates the finished product. The entire process maintains material position accuracy through a precision guiding system. Each stroke of the punch press triggers multiple stations to work collaboratively, achieving continuous processing. This effectively solves the problems of excessive burrs in the etching process and fluctuations in single-punch forming accuracy, achieving consistent control of spring sheet dimensions. The continuous stamping mode integrates multiple processes into a single processing cycle, significantly improving production efficiency. The linear arrangement of the stations reduces equipment debugging difficulty and provides a reliable foundation for automated production. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0019] Figure 1 A schematic diagram of a chip packaging and testing spring stamping production line according to an embodiment of the present invention;
[0020] Figure 2 for Figure 1 Schematic diagram of the loading and unloading station.
[0021] Explanation of icon numbers:
[0022] 100. Chip Packaging and Testing Spring Stamping Production Line; 1. Feeding Station; 11. Feeding Roller; 12. Feeding Channel; 2. Punching Station; 3. Spring Forming Station; 4. Spring Adjustment Station; 5. Cutting Station; 6. Finished Product Collection Channel; 7. Base.
[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0027] In existing technologies, chip packaging and testing spring manufacturing generally adopts a step-by-step processing method of etching and single-punch forming. The etching process is prone to burr defects, resulting in excessive edge roughness of the product and difficulty in controlling dimensional stability; single-punch forming requires multiple positioning, and fluctuations in the bottom dead point of the punch cause variations in the spring height, limiting the yield rate. Traditional production lines rely on manual feeding, which is inefficient and poses safety hazards. The separation of multiple processes results in a large equipment footprint, making it difficult to adapt to the needs of high-speed production.
[0028] To solve the above problems, this utility model proposes a chip packaging and testing spring stamping production line 100.
[0029] Please see Figure 1 In one embodiment of this utility model, the chip packaging and testing spring stamping production line 100 includes a production line structure comprising a feeding station 1, a punching station 2, a spring forming station 3, a spring adjusting station 4, and a cutting station 5. Multiple stations are arranged in a straight line to form a continuous stamping channel. The punching station 2 simultaneously performs edge trimming and shape punching operations. The forming station and the adjusting station are sequentially connected, and all processing actions are completed in a single stroke of the punch press.
[0030] The continuous stamping channel refers to the processing path where materials move continuously along a fixed direction. This can be achieved using linear guides and guiding mechanisms to ensure consistent processing benchmarks across multiple stations. The integration of trimming and shape blanking functions is accomplished through a composite punch structure, specifically using modular die inserts to simultaneously complete contour trimming and feature forming in a single stamping operation. The connection between the forming and adjusting stations is achieved through a position linkage mechanism, such as a shared mold frame design, ensuring synchronized movement trajectories of the dies at both stations.
[0031] In this invention, the raw material is fed into the stamping channel by the feeding mechanism and then passes through each processing area sequentially under the drive of the punch press. The punching station 2 first removes excess material and forms the product outline. The forming station then plastically deforms the spring sheet, and the adjustment station fine-tunes and corrects the formed part. Finally, the cutting station 5 separates the finished product. The entire process maintains material position accuracy through a precision guiding system. Each stroke of the punch press triggers multiple stations to work collaboratively, achieving continuous processing. This effectively solves the problems of excessive burrs in the etching process and fluctuations in single-punch forming accuracy, achieving consistent control of spring sheet dimensions. The continuous stamping mode integrates multiple processes into a single processing cycle, significantly improving production efficiency. The linear arrangement of the stations reduces the difficulty of equipment debugging and provides a reliable foundation for automated production.
[0032] Compared to existing technologies, traditional processes require material transfer between etching machines and multiple punch presses. This solution eliminates these intermediate handling steps through process integration. Repeated positioning errors inherent in step-by-step processing are eliminated by the linear arrangement of continuous stamping, and the mold linkage mechanism ensures precise timing matching of multiple workstations. The composite punching function reduces investment in dedicated trimming equipment, and the linear layout optimizes production line space utilization.
[0033] Specifically, please refer to Figure 2 In one embodiment of this utility model, the feeding station 1 includes two feeding rollers 11 arranged opposite each other perpendicular to the spring sheet conveying direction, and a feeding channel 12 is formed between the two feeding rollers 11 for clamping and feeding the spring sheet through the feeding channel 12. In this way, the spring sheet can be stably clamped and fed.
[0034] Furthermore, the loading station 1 also includes a synchronous controller, which is driven and connected to the feeding roller 11 and communicates with the punch press, to trigger the loading action when the crankshaft of the punch press rotates to a preset angle. The preset angle can be 150 degrees, 270 degrees or 350 degrees, and can be adjusted according to actual needs.
[0035] In one embodiment of this utility model, the synchronous controller triggers the feeding action when the crankshaft of the punch press rotates to 350 degrees.
[0036] The synchronization controller is a control unit that establishes signal linkage with the punch press power system. It can be implemented using PLC programming control or servo motor drive, and is used to precisely control the start and stop timing of the feed roller 11 during the punch press's operating cycle. The punch press crankshaft rotating to 350 degrees refers to the return stroke stage after the crank-connecting rod mechanism reaches the bottom dead center during the punch press's working cycle. Specifically, the crankshaft position can be monitored in real time by an angle sensor to ensure that the feeding action and the stamping process are synchronized in time.
[0037] Specifically, after the press completes one stamping stroke, when the crankshaft rotates to the 350-degree position, the synchronous controller receives the angle sensor signal and immediately drives the feed roller 11 to perform the feeding operation. At this time, the press slide is in the rising stage, the die is in the open state, and the material is smoothly fed into the stamping station. The feeding action is completed before the crankshaft rotates to 0 degrees, so that the material is accurately positioned when the press enters the next stamping stroke.
[0038] Compared to existing technologies, traditional manual feeding requires operators to manually place materials while the press is stopped, posing safety hazards and compromising feeding accuracy. This solution, however, combines mechanical linkage with electronic control to create a closed-loop control between the feeding action and the press movement, eliminating human error.
[0039] Through the above technical solution, this utility model realizes the fully automated operation of the material conveying process, ensuring that the error of each feeding step is controlled within an extremely low range, effectively improving the safety level and processing accuracy consistency of the production line, and avoiding the problem of scrapped stamped parts due to positioning deviation.
[0040] In one embodiment of this utility model, the punching station 2 is provided with a dense array of punches, the step gap between the punches and the cutting edge is 0.03-0.05 mm, and the punching density is 8-10 holes per square centimeter.
[0041] The dense punch array refers to multiple punches arranged in a specific pattern, such as an array, to form multiple punches within a unit area, thus solving the burr problem caused by uneven material removal in the etching process. The step gap refers to the lateral distance between the punch and its corresponding cutting edge. This gap can be precisely controlled within a range, such as 0.03 mm to 0.05 mm, to balance the punching force and material deformation, preventing burrs from forming at the punched edges. The punch density refers to the number of punches per unit area, which can be achieved according to a preset hole distribution, such as 8 to 10 punches per square centimeter, to improve material utilization and reduce waste.
[0042] Specifically, in punching station 2, the punch array is configured to match the spring sheet structure, allowing the arrayed punches to complete multiple punching actions in a single stroke of the punch press. The gap between the punch and the cutting edge is controlled within a small range, such as 0.03 mm to 0.05 mm, ensuring a smooth material shear surface during the punching process. The punching density is achieved by optimizing the punch arrangement, for example, setting 8 to 10 punches per square centimeter, thereby reducing material waste while meeting the functional requirements of the spring sheet.
[0043] Compared to existing technologies, traditional etching processes result in burrs exceeding 0.1 mm at the hole edges due to chemical corrosion, and material utilization is less than 70%. However, by using a dense array of punches and precise step-off spacing, burrs at the punching edges are suppressed to below 0.05 mm, while material utilization can be increased to over 85%. Furthermore, the stamping process avoids the waste liquid pollution problems associated with etching.
[0044] Through the above technical solution, this utility model effectively solves the problems of excessive burrs and material waste caused by etching process, achieves high smoothness of punched edge and efficient use of material, and completes multi-hole processing in one punch, which significantly improves production efficiency and product consistency.
[0045] In one embodiment of this utility model, the spring forming station 3 includes a punch and a die arranged perpendicular to the spring conveying direction and opposite to each other. The gap between the punch and the die is 5%-8% of the material thickness, and the surface of the die is provided with a nano-titanium carbide coating.
[0046] The clearance between the punch and die refers to the distance between the upper and lower dies when they are closed. This clearance tolerance can be controlled through precision grinding. This clearance range ensures that the spring material flows uniformly during stamping and forms a precise forming profile. The nano-titanium carbide coating is a hard film formed on the die surface through physical vapor deposition, specifically achieved using magnetron sputtering or arc ion plating. This coating effectively reduces the coefficient of friction between the material and the die surface during stamping, and reduces the adhesion of metal debris.
[0047] Specifically, during a single stroke of the punch press, the punch and die close with a preset gap, causing the spring material to undergo plastic deformation under controlled pressure. The hard coating on the die surface forms a physical isolation layer during the forming process, preventing the material from melting and adhering due to localized high temperature and pressure. Through precise control of the gap, the spring forming height can be stably maintained within the process requirements, while the coating continuously protects the working surface of the die, maintaining long-term consistency in forming quality.
[0048] Compared to existing technologies, traditional single-stamp forming processes typically use a fixed die clearance without a surface protective layer. This leads to fluctuations in the forming height of the spring sheet due to die wear, and frequent material adhesion during stamping necessitates machine shutdowns for cleaning. This solution, by dynamically adapting the clearance ratio to the material thickness and applying a surface protective coating, eliminates the accumulation of forming dimensional deviations and significantly extends the die maintenance cycle.
[0049] Through the above technical solution, this utility model solves the production interruption problems caused by the variation of spring height and mold adhesion during single-punch forming, realizes the precise control of spring forming height, and ensures the long-term working performance of the mold under continuous stamping conditions.
[0050] In one embodiment of this utility model, the spring adjustment station 4 includes an adjustable limit block and a fine-tuning screw, and the displacement accuracy of the limit block is ±0.01mm.
[0051] The adjustable limit block is a mechanical structure used to limit the forming position of the spring sheet. It can be implemented using a modular component with a slide rail, and the bending angle of the spring sheet can be controlled by adjusting its position. The fine-tuning screw is an adjustment component with precision threads, specifically a micrometer-level precision stainless steel screw, used to precisely control the displacement of the limit block. A displacement accuracy of ±0.01mm refers to the allowable deviation range for the limit block's position adjustment, which can be achieved through a high-precision lead screw drive mechanism or a closed-loop servo control system to ensure repeatability and positioning accuracy during the adjustment process.
[0052] Specifically, during the stamping process, after the spring sheet is conveyed to the adjustment station, the position of the limiting block is adjusted by a fine-tuning screw to limit the termination position of the spring sheet's bending. Through high-precision displacement control, the positional deviation of the limiting block after each movement is strictly limited, ensuring that the bending angle of the spring sheet remains consistent during stamping. In this process, the thread lead of the fine-tuning screw is proportional to the movement distance of the limiting block. Operators or the automatic control system can achieve minute displacements of the limiting block by rotating the screw, thereby precisely controlling the forming angle of the spring sheet.
[0053] Compared to existing technologies, traditional spring adjustment stations typically rely on fixed limit blocks or manual adjustment devices, making it difficult to achieve micron-level displacement control and resulting in significant deviations in the bending angle of the spring. This solution, however, significantly improves the control capability of the adjustment station by combining adjustable limit blocks with fine-tuning screws and a high-precision displacement mechanism.
[0054] Through the above technical solution, this utility model achieves precise control of the bending angle of the spring sheet, avoids the problem of spring sheet failure caused by angle deviation, and improves the operation efficiency and process stability of the adjustment station.
[0055] In one embodiment of this utility model, the cutting station 5 adopts a slanted blade structure, with the blade extension direction forming an angle with the spring conveying direction, and the angle being 15°-20°, and the blade hardness being HRC58-62.
[0056] The beveled blade structure refers to the angled angle between the cutting edge and the material contact surface. This can be achieved using a blade structure with a bevel, reducing the concentration of instantaneous shearing force through progressive cutting. The blade inclination angle is the angle formed between the beveled edge and the material transport direction, which can be adjusted by changing the blade mounting angle. This angle range optimizes stress distribution during the shearing process. Blade hardness refers to the physical properties of the blade surface after heat treatment. This can be achieved using vacuum quenching combined with low-temperature tempering, ensuring the blade remains sharp and resists wear during high-speed cutting.
[0057] Specifically, in cutting station 5, the beveled blade contacts the spring material at an angle, allowing the cutting process to gradually expand from a localized area to the entire surface, avoiding material tearing caused by instantaneous impact. Controlling the blade angle within a specific range balances shearing force and material deformation, reducing stress concentration at the cutting edge. Simultaneously, by increasing the blade's hardness, the blade is less prone to chipping or rolling during continuous stamping, thus maintaining the smoothness of the cut surface.
[0058] Compared to existing technologies, traditional cutting stations 5 often employ a vertical cutting edge structure, where the shearing process is completed instantaneously, easily resulting in burrs or micro-cracks on the material cross-section. In contrast, the oblique cutting edge structure disperses shear stress through progressive cutting, effectively suppressing plastic deformation at the material edges. At the same time, the high-hardness cutting edge avoids the degradation of cutting quality due to wear.
[0059] Through the above technical solution, this utility model significantly reduces burrs and cross-sectional defects generated during the cutting process, enabling the cutting edge of the spring sheet to meet the high smoothness requirements, thereby reducing the product scrap rate caused by poor cutting and improving the yield and stability of the continuous stamping production line.
[0060] In one embodiment of this utility model, multiple workstations are positioned by guide pins, and the clearance between the guide pins and the positioning holes is ≤0.005mm.
[0061] The guide pin is a cylindrical metal component used for precise positioning between mold stations. It is manufactured using high-precision machining and heat treatment processes, and its surface is hardened to enhance wear resistance. This component is inserted into the positioning hole during continuous stamping to achieve position calibration, effectively eliminating the risk of misalignment between stations. The clearance is the amount of space between the outer diameter of the guide pin and the inner diameter of the positioning hole. This clearance is controlled by precision grinding processes to maintain dimensional tolerances and is designed based on the material's coefficient of thermal expansion. This clearance is limited to a very small range to ensure that no radial offset occurs during positioning.
[0062] Specifically, during continuous stamping, the guide pin inserts into the positioning hole of the next station after each stroke of the press. When the stamping material is pushed by the feeding mechanism, the tight fit between the guide pin and the positioning hole forcibly corrects the material's positional deviation, ensuring that the stamping actions of multiple stations are always on the same reference axis. Through this mechanical forced positioning method, the relative positional errors of the punching, forming, adjusting, and cutting stations 5 are controlled within the microscopic scale, avoiding the product dimensional deviations caused by the accumulation of errors from multiple stamping operations.
[0063] Compared to existing technologies, traditional molds use ordinary guide pins with large clearances for positioning, which can easily lead to accumulated errors during continuous stamping due to material stretching or mechanical vibration. This solution, however, uses a precise fit between the guide pin and the positioning hole to form a rigid positioning constraint, fundamentally blocking the error transmission path and significantly outperforming the precision control capabilities of conventional positioning structures.
[0064] Through the above technical solution, this utility model effectively solves the problem of coaxiality deviation caused by cumulative errors in multi-station continuous stamping, ensuring the positional accuracy of the spring sheet punching, forming and cutting processes, so that the final product size meets the high-precision packaging requirements.
[0065] In one embodiment of this utility model, the arrangement spacing of the punch array matches the center distance of the spring sheet, and the center distance between adjacent punches is 4.00±0.01mm.
[0066] The spacing between the punches refers to the distance between multiple punches perpendicular to the spring conveying direction. This can be achieved by using a CNC machining center to precisely machine positioning holes, ensuring that the punch installation position error is controlled within the allowable range. Matching the spring center distance means that the punch spacing matches the predetermined hole spacing in the spring design drawing. This can be achieved by comparing the deviation between the punch installation position and the spring design data using an optical projector, avoiding punch position offset due to spacing errors.
[0067] Specifically, the spacing of the punch array perpendicular to the spring sheet feeding direction is precisely set according to the center distance of the spring sheets, and the center distance between adjacent punches is strictly controlled within the allowable deviation range. During continuous stamping, when the spring sheet material enters the punching station 2, the arrayed punches simultaneously act on the material surface. Because the punch spacing perfectly matches the spring sheet hole spacing, the punching force is evenly distributed along the material extension direction, avoiding excessive stress concentration in local areas. The material deformation during stamping is controlled within the elastic range, effectively preventing material cracking caused by uneven stress distribution.
[0068] Compared with existing technologies, the hole spacing in traditional etching processes is limited by the uniformity of chemical corrosion, resulting in a fluctuation of more than 0.1 mm in the spacing between adjacent holes. Furthermore, when using a single-punch die with a step-by-step punching method, multiple positioning errors lead to cumulative deviations. This solution precisely matches the punch spacing with the spring design parameters, ensuring that the mechanical stress distribution generated during the punching process is compatible with the material's ductility characteristics, fundamentally eliminating material structural damage caused by spacing mismatch.
[0069] Through the above technical solution, this utility model can avoid the phenomenon of crack propagation caused by stress concentration in the material during the stamping process, while ensuring that the punching position corresponds precisely to the functional area of the spring sheet, thereby improving the effective utilization rate of the material.
[0070] In one embodiment of this utility model, the output end of the spring adjustment station 4 is equipped with an optical detection sensor to monitor the height of the spring in real time.
[0071] Among them, the optical detection sensor refers to a detection device based on the principles of optical imaging or laser ranging. Specifically, it can be implemented using a high-resolution CCD camera or a laser displacement sensor, capturing the surface morphology features of the spring sheet through non-contact measurement. Real-time monitoring of the spring sheet height refers to continuously acquiring the vertical dimension data of the spring sheet after adjustment. Specifically, this can be achieved by linking the sensor with the PLC control system, converting the detection signal into an electrical signal and transmitting it to the data processing unit.
[0072] Specifically, an optical detection sensor is installed at the end of the spring adjustment station 4, and its detection area covers the movement path of the spring after it has been formed. When the spring passes through the detection area, the sensor emits a detection beam or acquires an image at a fixed frequency, and calculates the actual height of the spring by means of changes in reflected light intensity or image edge recognition algorithms. The detection data is transmitted to the control system in real time. When the measured value deviates from the preset threshold, the system automatically generates a feedback signal and triggers the limit mechanism of the adjustment station to perform compensation and correction.
[0073] In some specific implementations, the mounting height of the optical detection sensor can be adjusted according to the specifications of the spring sheet, for example, by using a slide rail bracket to fix the sensor body; the projection angle of the detection beam can be set to form an angle of 30°-45° with the normal of the spring sheet surface to reduce ambient light interference.
[0074] Compared to existing technologies, traditional processes rely on manual sampling or offline measurement equipment, which cannot obtain spring height data in real time during continuous stamping, leading to defective products flowing into subsequent processes. This solution achieves closed-loop control of quality parameters during production through online optical inspection, avoiding the risk of batch scrapping due to inspection delays.
[0075] Through the above technical solution, this utility model can instantly identify abnormalities in the forming height of the spring sheet during the stamping process, ensuring that the geometric dimensions of each spring sheet meet the assembly requirements, thereby effectively reducing the probability of functional failure and improving the overall yield of the production line.
[0076] In one embodiment of this utility model, the length-to-width ratio of the base of the chip packaging and testing spring stamping production line 100 is 3:1, and the end of the cutting station 5 is connected to the finished product collection channel 6.
[0077] The 3:1 length-to-width ratio of the base refers to the ratio of the longitudinal to the lateral extension in the overall layout of the production line. This can be achieved using a rectangular base structure, optimizing the equipment arrangement to extend the stamping channel along its length. This ratio facilitates a linear arrangement of workstations within a limited space, reducing equipment footprint. The finished product collection channel 6 is a transport structure for receiving cut products. It can be a conveyor belt or chute connected to the end of the cutting station 5, using gravity or mechanical power to move the finished products in a directional manner. This structure avoids efficiency losses caused by manual collection.
[0078] Specifically, the production line base is designed with a specific length-to-width ratio. The stamping stations are arranged sequentially along the length to form a continuous processing path, and the end of the cutting station 5 is equipped with an inclined slide as a collection channel. After the spring sheet completes the cutting process, the finished product slides directly into the collection channel for directional conveying. The length-to-width ratio of the base makes the equipment layout compact and avoids the space waste caused by the dispersed stations in traditional molds.
[0079] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A chip packaging and testing spring stamping production line, characterized in that, It has multiple workstations, including a feeding workstation, a punching workstation, a spring forming workstation, a spring adjusting workstation and a cutting workstation arranged sequentially in the spring conveying direction, and the multiple workstations are arranged in a straight line to form a stamping channel. The punching station integrates edge trimming and shape punching functions, and the spring forming station and spring adjusting station are connected in sequence to complete punching, forming, adjusting and cutting actions in a single stroke of the punch press.
2. The chip packaging and testing spring stamping production line as described in claim 1, characterized in that, The feeding station includes two feeding rollers that are arranged opposite each other perpendicular to the conveying direction of the spring sheet, and a feeding channel is formed between the two feeding rollers for clamping and feeding the spring sheet in the feeding channel.
3. The chip packaging and testing spring stamping production line as described in claim 2, characterized in that, The loading station also includes: A synchronous controller is connected to the feeding roller and communicates with the punch press to trigger the feeding action when the crankshaft of the punch press rotates to a preset angle.
4. The chip packaging and testing spring stamping production line as described in claim 1, characterized in that, The punching station includes multiple punches, which are arranged in an array perpendicular to the spring conveying direction.
5. The chip packaging and testing spring stamping production line as described in claim 4, characterized in that, The spacing of the punch array matches the center distance of the spring pieces, and the center distance between two adjacent punches is 4.00±0.01mm.
6. The chip packaging and testing spring stamping production line as described in claim 1, characterized in that, The spring sheet forming station includes a punch and a die perpendicular to the spring sheet conveying direction and arranged opposite to each other, for stamping the spring sheet during opposite movements. The gap between the punch and the die is 5%-8% of the material thickness, and the die surface is coated; and / or, The spring adjustment station includes a limiting block and an adjusting screw, and the displacement accuracy of the limiting block is ±0.01mm.
7. The chip packaging and testing spring stamping production line as described in claim 1, characterized in that, The cutting station includes a beveled blade structure, which includes a cutting edge, and the direction of the cutting edge extending is set at an angle to the direction of the spring sheet conveying.
8. The chip packaging and testing spring stamping production line as described in claim 1, characterized in that, Multiple workstations are positioned by guide pins, and the clearance between the guide pins and the positioning holes is ≤0.005mm.
9. The chip packaging and testing spring stamping production line as described in claim 1, characterized in that, The output end of the spring adjustment station is equipped with an optical detection sensor to monitor the spring height in real time.
10. The chip packaging and testing spring stamping production line as described in any one of claims 1-9, characterized in that, The length-to-width ratio of the base of the chip packaging and testing spring stamping production line is 3:1, and the end of the cutting station is connected to the finished product collection channel.