Automatic plastic spin welder for Water Filter_PP Mug_Thermos Cup_Oil Filter Spin Welding of Automatic Spin Thermofusion Machine

Automatic plastic spin welder

Automatic plastic spin welder is the preferred technique for thermoplastic parts with circular axis joint which have high bond strength, hermetic requirements, during spin welding, one part is hold stationary in a holding fixture while second part is rotated against it under pressure, this resulting friction causes the joining surface to melt and fuse together, producing strong airtight and water-resistance welds, keepleader, we are reliable supplier of multitude of models ranging in scalable and integrable configuration and functionality,likely composition pneumatic driven inertial based, servo-electric driven orientation based and auto feeding device integrated mechanism

Product description

Detailed Images

Automatic plastic spin welder has salient advantages in circular thermoplastic bonding process, such as perfect mastery of stopping values;repeatability of the process;mastery of penetration speed;optimized production gain;auto rotary table index; robotic arm of unloading, accurate angular orientation and collapse distance; reduction of cycle time and repeatability of welds and programmable logic control with touch screen of intuitive interface

Machine Uses

Automatic plastic spin welder for Water comes as a pioneer solution in thermoplastic parts assembling with circular or spherical joints of symmetrical interface,such as floater, paint tank, spherical toy, PP thermos cup, oil/water filter, spray connector,thermos bottle interior, PP Mug, manifold and etc

Function illustration

01: MATERIAL CONSIDERATIONS

Material is that can be friction (i.e: vibration )welded can also be joined with by spin melting welder, the semicrystalline thermoplastics are more readily joined using spin melting welder that ultrasonic welding, using compatible polymers, spin melting welder is capable of making reliable hermetic seals, for-field welding is easier with spin melting welder that with ultrasonic welding, additional parts can be entrapped between the upper and lower pieces during spin melting weld

Joining of dissimilar polymers is possible using the spin melting welder process although it generally produces lower stretch weld joints, by design the weld joint with an undercut, the polyer with the lower melting temperature will flow into the undercut, creating a mechanical union

Material filler and surface contaminant (e.g. mold release agent) are two factors that will affect consistency and weld repeatability, spin melting welder is more tolerant of contaminants that ultrasonic welding, spin melting welder is also less effected by hygroscopic polymers, although they many still require special handing for critical application, the moisture content can lead to bubble formation in the joint resulting in decreased weld stretch

02: Joint design consideration

021: Part Joint must be on a circular axis

022: Joint design should allow for adequate collapse distance

023: Final orientation of part if necessary

024: If at all possible the upper part would be designed for use with drive features, place for upper tool to grasp the welding parts half

025: The joint area must ne designed so that there is no other part contact interference

KEEPLEADER intelligent assemble solutions offers no charge feasibility study and joint design review of your assembly

03: CONTROL PARAMETERS

There are several primary process control parameters that affect weld quality, there are the surface velocity of the weld joint, press (axial ) speed, weld depth, and hold distance time

04: SURFACE SPEED

For a fixed rotational spin speed (RPM), linear surface speed increases with weld joint diameter, for a fixed weld joint diameter, surface speed increases with motor RPM, smaller diameter parts therefore usually require more FRM that larger parts of the same material, if the surface speed is too low, an adequate amount of head will not be generated to cause sufficient melting, if the speed is too high, excessive heat in the joint could result in material degradation or reduction in viscosity leading to material flow away from the joint

The selection of proper surface speed depends to a larger degree on the material and joint geometry of the parts being welded, some materials, such as PVC, can be readily welded for a wide range of values, while others require a narrow range, commonly quoted values in the literature recommend using

05: PRESS (AXIAL) SPEED

The press speed affects the amount of contact pressure between the parts being welded, which is required to generates frictional heat, the larger the speed. The larger the rate of heat rise, in combination with the surface speed press speed must be high enough to cause melting at the interface as opposed to grinding, but not too high as to damage the parts, excessive press speed can also lead to stalling of the spin motor as more torque is required to maintain constant spin speed

06: WELDING DEPTH

The determination of the proper welding depth is highly dependent on the application, the weld joint is typically designed for a specific weld penetration, ideally, the weld is sufficiently deep to produce a strong hermetically sealed assembly, an excessive depth many lead to the formation of flash (material that is ejected from the joint area during the weld and adheres to the assembly), the drawing out of reinforcing filler material and realignment of the interchain bonds in the weld plane resulting in a weak axial weld joint. And possibly part distortion

Since weld depth affects the joint strength and amount of flash generated, it is important to design the weld joint properly to meet both requirements simultaneously, the incorporation of flash trap features is recommended to produce acceptable appearance without compromising strength

07: HOLD

During the hold phase, vertical press travel initially brings the molten parts closer together (dynamic hold) and then allows the molten material to solidify (static hold), amorphous plastics will normally take longer to solidify that semicrystalline plastic, the dynamic hold distance is typically a small value compare the weld distance, an approximate staring point for initial application setup is 10% of weld distance, the static hold can vary depending on the size of parts, but is usually in the 1-3 seconds range 

Automatic plastic spin welder simplifies the plastic assembling with cylindrical or spherical joints and symmetrical interface, untrained operator can obtain the welding cycle within 1 to 3 seconds from placing the welding object to the ultimate unloading,spin frictional bonding process gathers predominant three steps, they include spinning process: one component spins and causes surface friction against the fixed component; melting process:friction between the two components generates heat and causes the contact surfaces to melt; holding process/dwell: spinning stops and the weld joint solidified under pressure

Contact Us

Automatic turntable indexing device integrates in Automatic plastic spin welder,that adopts the basic friction melting bonds for thermoplastic parts assembling process with circular or spherical joints of symmetrical interface. During spin welding, one part is held stationary in a holding fixture while the other part is rotated against it under axis loading pressure applied, this resulting friction causes the joining surface to molt and fuse together, producing strong and hermetic welds, and auto turntable indexing assist on feeding and robotic arm to complete ultimate unloading process, which is ideal for bulk production,however, prior to construction, we request the end user to provide us with their referential photo,designated stipulation,size and expected effect for tech audit, because, we muse ensure your rotary part in welding can manually place in the working position,that is capable for retrieving by manipulator and angular orientation factor participated, don’t hesitate to consult your concerns with our sales representative after peruse our on-line article

☺ Attn: MS Helen

✉ E-mail:sales@keepleader.com

☎ Cellphone: +86 13590415784 (Wechat/Whatsapp)

☎ Tel: +86 755 84190358

☞ Website: www.hfwelds.com / www.keepleader.com