Manufacturing plastic buckets - GIFs

[Altair]

Manufacturing plastic buckets.










Previously:

Flat-sided bucket - photo
Bucket labeling machine - GIF
Alhambra engraved cast bronze bucket - photo
Bucket lid crimping tool - GIF
Rope handle knot for 5-gallon bucket - GIF

[neilbourjaily]

Screw instead of hydraulics. Definitely old-timey engineering.

[Toolmaker51]

Screw instead of hydraulics. Definitely old-timey engineering.

Typical of 3rd world production. Not to mention poor mold shut-off at opening of bucket. Trimming is virtually non-existent, and has been for decades. The clips depict what could barely be called injection molding. Screw or hydraulically clamped though, is a requirement. Whatever the inlet pressure PSI, is multiplied by total surface area. That also determines physical dimensions of the mold block, especially the cavity, to retain such pressure.
The mold for poly-carbonate buss box [restaurant use] of ~18"x18"x24" runs in a 1500 ton press, the mold halves ~3'x4'x5' and weighed 11 tons.

[neilbourjaily]

"Typical of 3rd world production." Yep, you're right Toolmaker51. And it is sufficient in a world where labor is cheap and glad to work, to have a job. It was sufficient in the USA in the 1930s to build roads, parks, dams, bridges to use more hand labor and less machine labor.

I am concerned that the on-coming rebuild of America's infra-structure--way past due and way more expensive like all past due invoices--will involve more machine labor rather than hand labor. The consequence is the machine builders and machine contractors will make all the money. The laborers, the few willing ones there are, will not get the dough.
The infra-structure bill will be another gift to corporations.

[Toolmaker51]

I recall a very recent 'news' item that infrastructure included day care centers. That will not remedy true infra-structure one bit.
Like photo of the ironworkers, hand labor is a part of construction, but sheer size requires mechanical equipment to produce volume.