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What factors should automotive manufacturing companies consider when choosing a dispensing machine?
Release Time:
2021-11-12
When choosing a dispensing machine, automobile manufacturing enterprises need to comprehensively consider multiple factors such as process requirements, adhesive characteristics, production efficiency, equipment costs, and stability. The following is a specific analysis:
When choosing a dispensing machine, automobile manufacturing enterprises need to comprehensively consider multiple factors such as process requirements, adhesive characteristics, production efficiency, equipment costs, and stability. The following is a specific analysis:
1、 Process requirements and dispensing accuracy
Glue type
Glue dispensing shape: If micro precision dispensing is required (such as sensor chip bonding), priority should be given to piezoelectric dispensing machines (with precision up to nanometer level) or jet dispensing machines (non-contact, suitable for small glue points); If large-area coating or line coating is required (such as car body sealing), a screw type glue dispenser or a two-component glue dispenser can be used.
Glue dispensing position: For complex curved surfaces or deep cavity structures (such as engine internal seals), a 3D motion platform glue dispensing machine is required to ensure precise path.
Accuracy requirements
High precision scenarios (such as automotive electronic component packaging): Choose closed-loop controlled jet or piezoelectric dispensing machines, with errors controlled within ± 1%.
Low to medium precision scenarios (such as interior parts pasting): Pneumatic or peristaltic glue machines can be used for lower costs.
2、 Adhesive properties and adaptability
Viscosity and fluidity
Low viscosity adhesives (such as quick drying adhesives and conductive adhesives): suitable for pneumatic or spray dispensing machines, can be evenly dispensed by relying on air pressure.
High viscosity adhesives (such as silicone and epoxy resins): require a screw type dispensing machine (screw extrusion push) or a two-component dispensing machine (to reduce viscosity after mixing).
Adhesive containing particles (such as thermal conductive adhesive, sealant): Use a peristaltic glue dispenser (low shear force, to avoid particle breakage).
Curing Method
If the glue needs to be mixed and cured (such as AB glue), a two-component dispensing machine must be selected to ensure that the two components are evenly mixed in proportion.
For UV curing adhesive, it is necessary to consider whether the dispensing machine is compatible with UV curing equipment linkage.
3、 Production efficiency and degree of automation
capacity requirement
Large scale assembly line production (such as vehicle assembly): Priority is given to fully automatic dispensing machines (such as online spray dispensing machines), which support high-speed continuous operation and can achieve efficiency of hundreds of points per minute.
Small batch customized production (such as special vehicle modification): semi-automatic glue dispensing machines or portable devices can be used to flexibly adjust the process.
Integrated compatibility
When connecting with existing production lines such as robots and visual inspection systems, choose a dispensing machine that supports PLC communication and has open interfaces, such as an intelligent spray dispensing machine that can integrate a visual positioning module to automatically correct the dispensing path.
4、 Equipment cost and maintenance cost
Initial investment
Scenarios with limited budget (such as component suppliers): Pneumatic or peristaltic dispensing machines have lower costs (usually tens of thousands of yuan) and are suitable for small and medium-sized enterprises.
High end precision manufacturing (such as luxury car electronic components): Piezoelectric dispensing machines or two-component dispensing machines are more expensive (hundreds of thousands to millions of yuan), but have better accuracy and stability.
maintenance cost
Replacement frequency of vulnerable parts: The sealing ring of the pneumatic dispensing machine and the screw pump of the screw dispensing machine require regular maintenance, and the cost of consumables and downtime need to be evaluated.
After sales service: When choosing a supplier, it is necessary to consider the response speed of technical support, such as whether to provide remote debugging, regular inspections, and other services.
5、 Environmental and reliability requirements
working environment
High temperature, high humidity or dusty environment (such as engine workshop): It is necessary to choose a glue machine with dust-proof and moisture-proof design, such as a fully enclosed screw glue machine.
Cleanroom (such as electronic component production): Priority should be given to using spray dispensing machines (non-contact, reducing pollution risks) or equipment with stainless steel bodies.
Stability and durability
24-hour continuous production scenario: Equipment with high reliability is required, such as piezoelectric dispensing machines driven by servo motors, which have low failure rates and long lifespan.
Complex process switching: Choose a modular designed dispensing machine that supports quick replacement of components such as needles and glue valves, reducing debugging time.
6、 Industry standards and compliance
quality certification
The dispensing process involving safety components (such as vehicle structural adhesive): The dispensing machine must comply with the IATF 16949 quality management system requirements and have the ability to trace process parameters (such as adhesive volume, pressure, and temperature data recording).
environmental requirements
When handling solvent based adhesives, the dispensing machine needs to have exhaust gas collection or leak prevention design, in compliance with VOCs emission regulations.
Summary: Decision Process Suggestions
Clarify core requirements: First, clarify the precision, adhesive type, and production capacity targets of the dispensing process, and eliminate incompatible models.
Test validation: Conduct sample testing on candidate devices, focusing on observing the consistency of adhesive points, equipment stability, and ease of operation.
Long term cost assessment: not only considering the purchase price, but also calculating the maintenance, consumables, and energy consumption costs within 3-5 years.
Supplier cooperation: Priority should be given to suppliers with mature cases in the automotive industry to ensure that the equipment meets the special needs of the industry (such as vibration resistance and oil pollution resistance).
Through systematic evaluation, enterprises can choose the most suitable dispensing machine for their own processes, balance accuracy, efficiency, and cost, and improve the automation level and product quality of automotive manufacturing.
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