Printing red glue: (can also print red glue)The function is to fix the red offset printing onto the fixed position of the PCB, mainly to fix the components to the PCB. It is generally used for surface mount components on both sides of the PCB and for wave soldering on one side. The equipment used for printing solder paste and red glue can be completed by one machine, located at the forefront of the SMT production line. Curing: (Reflow soldering is more effective for curing and lead solder paste)Its function is to heat and solidify the patch adhesive, thereby firmly bonding the surface mounted components and PCB together. The equipment used is a curing oven (which can also be used for curing adhesives and conducting thermal aging tests on components and PCBs), located behind the surface mount machine in the SMT production line.

Strength and wear resistance Polyamide fiber: excellent wear resistance (better than polyester), good elasticity, but easy to age and become brittle when exposed to ultraviolet light for a long time. Polyester fiber: high strength, better wrinkle resistance and shape retention, but slightly weaker wear resistance than nylon. Hygroscopicity Polyamide fiber: slightly better hygroscopicity than polyester (nylon regain is about 4%~5%), but still a hydrophobic fiber. Polyester fiber: poor hygroscopicity (moisture regain is only about 0.4%), easy to generate static electricity, and may be stuffy when worn. Heat resistance Polyamide fiber: low softening point (nylon 6 is about 180°C, nylon 66 is about 220°C), easy to shrink and melt at high temperature. Polyester fiber: better heat resistance (melting point is about 250~260°C), strong stability at high temperature, suitable for heat setting process.

Template: (Steel Mesh)Firstly, determine whether to process the template based on the designed PCB. If the surface mount components on the PCB are only resistors, capacitors, and packaged at 1206 or above, there is no need to make a template, and solder paste can be applied using a syringe or automatic dispensing equipment; When chips containing SOT, SOP, PQFP, PLCC, and BGA packaging, as well as resistors and capacitors with packaging below 0805 in PCB, templates must be made. General templates are divided into chemically etched copper templates (low price, suitable for small batches, experiments, and chip pin spacing of 0.635mm); Laser etched stainless steel template (high precision, high price, suitable for large-scale, automatic production lines, and chip pin spacing of 0.5mm). For research and development, small batch production, or spacing of 0.5mm, it is recommended to use etched stainless steel templates; For mass production or stainless steel templates with a spacing of 0.5mm using laser cutting. The external dimensions are 370 * 470 (unit: mm), and the effective area is 300 * 400 (unit: mm). Screen printing: (high-precision semi-automatic solder paste printing machine)Its function is to use a scraper to leak solder paste or patch adhesive onto the solder pads of the PCB, preparing for the installation of components. The equipment used is a manual silk press (screen printing machine), template, and scraper (metal or rubber) located at the forefront of the SMT production line. It is recommended to use a medium-sized silk printing table and a precision semi-automatic screen printing machine to fix the template on the screen printing table. The position of the PCB is determined on the screen printing platform by manually turning the up and down and left and right knobs on the screen printing table, and this position is fixed; Then place the PCB to be coated between the silk screen platform and the template, place solder paste on the silk screen board (at room temperature), keep the template parallel to the PCB, and use a scraper to evenly apply the solder paste on the PCB. Pay attention to timely cleaning the template with alcohol during use to prevent solder paste from blocking the leakage holes of the template. SMT: (Korean high-precision fully automatic multifunctional SMT machine)Its function is to accurately install surface mount components onto the fixed position of the PCB. The equipment used is a surface mount machine (automatic, semi-automatic, or manual), a vacuum suction pen or tweezers, located behind the silk printing station in the SMT production line. For laboratories or small batches, it is generally recommended to use double headed anti-static vacuum suction pens. To solve the problem of mounting and aligning high-precision chips (chip pin spacing of 0.5mm), it is recommended to use the Samsung fully automatic multifunctional high-precision surface mount machine (model SM421 can improve efficiency and mounting accuracy) from South Korea. The vacuum suction pen can directly pick up resistors, capacitors, and chips from the component rack. Due to the adhesive properties of solder paste, resistors and capacitors can be placed directly in the desired positions; For chips, a suction cup can be added to the vacuum suction pen head, and the suction force can be adjusted by a knob. Remember to align the position of any component regardless of its placement. If the position is misaligned, the PCB must be cleaned with alcohol, silk screened again, and the component must be repositioned. Reflow soldering:Its function is to melt the solder paste, firmly solder the surface mounted components and PCB together to achieve the electrical performance required by the design, and precisely control them according to international standard curves, which can effectively prevent thermal damage and deformation of PCB and components. The equipment used is a reflow soldering furnace (fully automatic infrared hot air reflow soldering furnace), located behind the surface mount machine in the SMT production line. Cleaning:Its function is to remove substances or soldering residues such as flux that affect the electrical performance on the PCB that has been mounted. If using non cleaning solder, it generally does not need to be cleaned. For products that require low power consumption or good high-frequency characteristics, cleaning should be carried out, while general products can be exempted from cleaning. The equipment used is either an ultrasonic cleaning machine or manually cleaned with alcohol, and the position may not be fixed. Inspection:Its function is to inspect the soldering and assembly quality of the PCB that has been mounted. The equipment used includes magnifying glasses and microscopes, which can be placed in suitable locations on the production line according to inspection needs. Repair:Its function is to rework PCBs that have detected faults, such as solder balls, solder bridges, open circuits, and other defects. The tools used are intelligent soldering iron, repair workstation, etc. Configure at any position on the production line.

1、 Basic Process Composition of SMT Screen printing (or glue)>Mounting>(curing)>Reflow soldering>Cleaning>Testing>Repair 2、 SMT production process flow Surface mount technology ① Single sided assembly: (All surface mounted components are on one side of the PCB) Incoming inspection - solder paste mixing - silk screen solder paste - SMT - reflow soldering ② double-sided assembly; (Surface mount components are located on both sides A and B of the PCB) Incoming inspection - PCB A-side silk screen solder paste - SMT - A-side reflow soldering - flipping board - PCB B-side silk screen solder paste - SMT - B-side reflow soldering - (cleaning) - inspection - repair Mixing process ① Single sided mixed assembly process: (Both the plug-in and surface mount components are on the A side of the PCB) Incoming inspection - Solder paste mixing - PCB A-side silk screen printing solder paste - SMT - A-side reflow soldering - PCB A-side plug-in - Wave soldering or immersion soldering (a small number of plug-ins can be manually soldered) - (cleaning) - Inspection - Repair (paste first, insert later) ② Double sided mixing process: (Surface mount components are on the A side of the PCB, and plugs are on the B side of the PCB) A、 Incoming inspection - Solder paste mixing - PCB A-side silk screen printing solder paste - SMT - Reflow soldering - PCB B-side plug-in - Wave soldering (a small number of plug-ins can be manually soldered) - (cleaning) - Inspection - Repair B、 Incoming inspection - PCB A-side silk screen solder paste - SMT - manual soldering inventory of PCB A-side plugs - solder paste - PCB B-side plugs - reflow soldering - (cleaning) - inspection - repair (Surface mount components are on the A and B sides of the PCB, and plugins are on either or both sides of the PCB) First, perform reflow soldering of surface mount components on both sides A and B of the double-sided PCB using the double-sided assembly method, and then manually solder the plugs on both sides.

SMTQ Rapid Material Finding Method Clarify requirements: Firstly, it is necessary to clarify which components are needed, including specific models, specifications, quantities, etc. You can refer to design drawings, BOM lists, or communicate with engineers to ensure clear requirements. Supplier · Inquiry: Contact multiple reliable suppliers, provide them with detailed requirements, and inquire whether they have inventory or can provide corresponding components.You can inquire through phone or email and record the content of each inquiry. Utilize online component libraries: Use online component libraries such as DigiKeyQ, MouserQ, etc. to enter the model or specification parameters of the components for searching. These platforms provide a wealth of component inventory and price information, which can help you find suitable suppliers and prices. Familiarize oneself with the market: Understand the main component brands, models, and price ranges in the market, so as to better communicate and compare with suppliers. At the same time, pay attention to price fluctuations in the market in order to purchase at the appropriate time. Establish long-term cooperative relationships: Establish long-term cooperative relationships with reliable suppliers to obtain better services and price discounts. By establishing partnerships with suppliersA good cooperative relationship will also make them more willing to help you find materials. 6. Multi party comparison and negotiation: After collecting quotes and inventory information from multiple suppliers, compare and negotiate to select the most suitable supplier. During the negotiation process, one can try to negotiate for better prices, delivery times, and other conditions.By using the above methods, it is possible to effectively find the required SMT components and ensure smooth production.

The key role of SMT processing in medical equipment manufacturing With the continuous development of technology, the demand for precision manufacturing technology in the medical equipment manufacturing industry is increasing day by day.Among various manufacturing technologies, surface mount technology (SMT) plays a crucial role in medical equipment manufacturing due to its high precision, efficiency, and reliability.This article will elaborate on the importance of SMT processing in medical equipment manufacturing from the following aspects.1、 To improve production efficiency, SMT processing adopts automated production lines and uses precise mounting equipment to quickly and accurately mount electronic components onto PCB boards.Compared to traditional manual welding, SMT processing greatly improves production efficiency and reduces labor costs.In the manufacturing process of medical equipment, time is life, and efficient SMT processing technology has won valuable time for rescuing patients.2、 High quality SMT processing of well-known products adopts advanced testing equipment to strictly control the quality of every production process.From component screening, PCB board production to final product inspection, every step is inspected by precision instruments and strict standards.This strict quality control has gained high recognition for the stability and reliability of medical equipment, providing strong guarantees for patient safety.3、 Achieving high-precision manufacturing of medical equipment requires extremely high precision, and even small errors may affect the performance of the equipment.SMT processing technology can achieve micrometer level mounting accuracy through high-precision mounting equipment and advanced production processes, meeting the demand for high-precision manufacturing in medical equipment.This high-precision manufacturing technology provides a solid foundation for the stable and reliable performance of medical equipment.4、 The continuous development and innovation of SMT processing technology promote technological innovation, bringing more possibilities for medical equipment manufacturing.With the continuous emergence of new electronic components, SMT processing technology can quickly adapt and apply these new technologies, promoting technological innovation in medical equipment.This technological innovation not only improves the performance of equipment, but also provides more impetus for the development of the medical field.5、 Although SMT processing equipment requires a high one-time investment, its efficient production efficiency and strict quality control can greatly reduce production costs in the long-term production process.SMT processing technology can also reduce the waste of raw materials and labor costs, further improving production efficiency.This cost advantage enables medical device manufacturers to maintain competitiveness in fierce market competition.6、 Adapting to market demand With the continuous development of medical technology, the demand for medical equipment in the market presents diversified and personalized characteristics.SMT processing technology can quickly adapt to changes in market demand by adjusting production line configurations and process flows to produce medical equipment of different specifications and functions.This flexibility enables medical device manufacturers to meet the diverse needs of the market and win more market share.SMT processing plays a crucial role in the manufacturing of medical equipment.It can not only improve production efficiency, increase product quality, achieve high-precision manufacturing, promote technological innovation, and reduce production costs, but also adapt to changes in market demand.With the continuous advancement of technology and the rapid development of the medical field, SMT processing technology will play a more important role in the manufacturing of medical equipment, making greater contributions to human health and the development of the medical industry.

1、 Basic concepts of conveyor belt conveying parametersConveyor parameters refer to various parameters that need to be set during the operation of the conveyor belt, including speed, tilt angle, material humidity, and other factors. These parameters directly affect the operating efficiency of the conveyor belt and the quality of the conveyed materials. Speed The speed of a conveyor belt is generally expressed in meters per second, and is usually determined based on the characteristics of the conveyed material and the length of the conveyor belt. Excessive or insufficient speed can affect the operation of the conveyor belt, so adjustments need to be made according to the actual situation. Tilt angle The inclination angle refers to the degree of inclination of the conveyor belt, generally expressed in degrees. The size of the inclination angle has a significant impact on the operation effect of the conveyor belt and the quality of the conveyed materials, and needs to be adjusted according to the actual situation. Material humidity Material humidity refers to the moisture content of the conveyed material, which has a significant impact on the operating efficiency of the conveyor belt and the quality of the conveyed material. Excessive humidity can cause materials to adhere to the conveyor belt, affecting the conveying effect; If the humidity is too low, it will cause the flowability of the material to deteriorate, which will also affect the conveying effect. 2、 The correct setting of conveyor belt parameters Speed setting a. The operating speed of the conveyor belt is determined based on the characteristics of the conveyed material and the length of the conveyor belt, and generally should not exceed the flow limit of the material. b. Adjust the speed of the conveyor belt according to the actual situation to avoid affecting the conveying effect if the speed is too fast or too slow. Setting the tilt angle a. The inclination angle of the conveyor belt should be determined based on the characteristics of the conveyed material and the length of the conveyor belt, and generally should not exceed the flow limit of the material. b. Adjust the inclination angle of the conveyor belt according to the actual situation to avoid affecting the conveying effect if the angle is too large or too small. Setting of material humidity a. Determine the operating parameters of the conveyor belt, such as speed and tilt angle, based on the characteristics and humidity of the conveyed material. b. Adjust the operating parameters of the conveyor belt according to the actual situation to avoid excessive or insufficient humidity affecting the conveying effect. 3、 Factors affecting the conveying parameters of conveyor belts The impact of speed on conveyor belts a. Excessive speed can lead to poor fluidity of materials, which can easily cause material accumulation and damage. b. Slow speed can lead to increased adhesion of materials, which can easily cause material adhesion and blockage. The influence of inclination angle on conveyor belt a. Excessive tilt angle can cause material to slip and affect the conveying effect. b. A too small tilt angle can cause materials to adhere to the conveyor belt, which can also affect the conveying effect. The influence of material humidity on conveyor belts a. Excessive humidity can cause materials to adhere to the conveyor belt, affecting the conveying effect. b. Low humidity can lead to decreased fluidity of materials and also affect the conveying effect. Summary: The setting of conveyor parameters is an important guarantee for the operation effect of the conveyor belt, and it needs to be adjusted reasonably according to the actual situation. Through the introduction of this article, it is believed that readers have gained a deeper understanding of the conveying parameter settings of the conveyor belt, which can better achieve efficient operation of the conveyor belt.

MARK point introductionThe MARK point is the alignment point used for positioning the PCB board when it is attached to the stencil for printing. It is also called the reference point.MARK dots and half-marks are generally suitable for machine alignment. The printing machine has its own photo-taking optical device for identification. Therefore, if the customer uses the stencil for fully automatic printing, the MARK point needs half a moment.MARK point through holes are generally suitable for manual alignment. In semi-automatic or manual printing, the stencil pairs are manually aligned with the naked eye, so the stencil MARK points must be half-marked.Note: The red glue net must be marked with MARK points;When making MARK points on the solder paste net, it depends on whether there is a corresponding point on the PCB board. If there is no corresponding point on the PCB board, this option is invalid. Send us an inquiry , we will get back to you soon ,thank you! [wpforms id="20484"]