
How long should the cooling water tank of the refrigerator door seal production line be
2025-08-14
Qingdao Zhenxiong Mechanical Equipment Co., Ltd.The length of the cooling water tank is not simply a pursuit of "numerical maximization", but a scientific balance based on material properties and quality stability.1. 8-meter waterwayThe internal heat of the high-temperature adhesive strip needs to be deeply transferred, and a short water tank can cause "cold skin and hot core", burying hidden deformation hazards; Double stage circulating water spray cooling water tank, with a total length of 8 meters in two sections, provides sufficient cooling path and time for the cooling and shaping of the door seal, eliminates residual stress, and ensures that the door seal is not easily deformed.2. Spray cooling, uniform shapingCirculating water evenly wraps around the high-temperature extruded door seal through dense spray holes, avoiding local rapid cooling and allowing the material to cool and solidify smoothly and synchronously from the surface to the inside.Not all cooling is called 'sufficient cooling'. Qingdao Zhenxiong Mechanical - Refrigerator Door Seal Production Line, with an 8-meter dual segment spray system, uses scientific space allocation and water flow control to ensure product size stability from the source and long-term use without deformation.
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Why is PVC granule material more recommended for producing refrigerator door seals
2025-07-23
Good processability: easy to melt and plasticize, moderate fluidity, high extrusion molding efficiency, smooth surface.Strong sealing: The product is soft and elastic, and can tightly fit the refrigerator door, providing good sealing and insulation effects.Anti aging: good weather resistance, not easy to harden, crack or discolor after long-term use.Good low-temperature toughness: It maintains good flexibility and sealing performance even in low-temperature environments of refrigerators.Easy to bond/weld: The particles have good bonding performance after melting, making it easy to weld the end of the door seal or bond with other components.High stability: The formula is stable, not easily decomposed during processing, and the product size stability is good.High cost-effectiveness: Providing good cost-effectiveness while meeting performance requirements.
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How many people are usually required to operate the refrigerator door seal production line
2025-07-23
The fully automated refrigerator door seal production line adopts a PLC intelligent control system to coordinate the orderly production of each link. The entire line can operate efficiently with only one person:1. Configure an automatic drying and feeding machine with automatic overload and shortage alarms to reduce labor costs;2. Spray cooling+water removal device solves the deformation/water mark problem caused by traditional water tank cooling;3. Automatic drilling device: automatically completes precise hole position processing to ensure position consistency;4. The traction speed is controlled by a frequency converter, equipped with a pneumatic cutting device, and the cutting length and size can be adjusted;5. 45 fully automatic cutting machine, capable of cutting both ends of the rubber strip into a 45 degree angle with a cutting accuracy of ± 1mm;6. The robotic arm is controlled by photoelectric technology to automatically clamp and smoothly place the adhesive strip onto the receiving table.This type of fully automatic refrigerator door seal production line can stably support long-term continuous operation, helping enterprises reduce labor costs while increasing production capacity, especially suitable for large-scale order production scenarios.
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What is the standard for electroplating workpieces?
2025-04-14
In order to ensure the quality and bonding strength of the coating, effective pretreatment before electroplating is the key to obtain high-quality coating, so the following standards are formulated:
Before electroplating the workpiece
After the workpiece is processed, the surface should be chamfered and deburred. Bumping and hitting are strictly prohibited.
Remove various macroscopic defects such as grease, cooling cutting fluid, burrs, rust, scratches, and oxide scales from the surface of the workpiece.
The workpiece shall no polishing or scratching phenomenon, and all workpieces that can be processed by machine tools shall be processed by machine tools.
All workpieces for drilling and tapping need to be chamfered.
After electroplating the workpiece
Conduct quality inspection on the workpiece, check for defects in the coating, etc.
Carefully package and handle to avoid damage during transportation and storage.
Centrally placed in the workshop, do a good job of protection, do not directly touch the ground.
All workpieces must not undergo secondary processing after electroplating.
During installation, avoid collisions and wear clean work gloves to ensure the cleanliness of the workpiece's appearance and prevent any appearance defects.
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What are the production technical standards for door gasket molds ?
2025-04-14
Extrusion mold
The material of the extrusion mold should be rust - resistant; and the molding size of the rubber strip and the height of each airbag should comply with the drawings/samples.
The standard requirement for extrusion molds is that there should be no repairs to ensure smooth processing of the front cover,The screw cap shall not be larger than the insert.
Extrusion die diameter: φ90-0.3mm, Customized according to customer requirements. The extrusion die uses slow wire.
Shaped mold
The cooling mold assembly is complete, with rounded chamfers, complete cooling holes, and stainless steel water nozzles.
The cooling die is coded (consistent with the extrusion die), the sealing ring is leak proof, and the fixing bolts are made of stainless steel.
Testing mold
Qualified rubber strips should be fully filled and free of gaps or wrinkles when passing through the inspection mold, ensuring smooth threading and chamfering.
Detect the die with the strip, and chamfer the strip to encode (consistent) glossiness.
Mold testing requirements:
Use SJ75 extruder for testing to ensure compression ratio.
Shipping packaging:
The extrusion mold is fixed with a paper tube, and all molds are tightly packaged to prevent rain and moisture, ensuring that the goods are intact during violent transportation by express delivery.
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