Spray Cap Assembly Line: What Decides Quality

How a spray cap line is specified

Four things fix the layout: the cap type (mist, spray or lotion), the insert and orifice, the volume per shift, and how many cap sizes the same line must run. Caps that share a diameter but differ in orifice can share a line; caps that differ in thread usually cannot without a fixture change.

Station sequence

Cap feeding, insert press-fit, gasket fitting, actuator placement, then a spray check before discharge. The insert station is where the design earns its money, because the orifice is the one feature that cannot be corrected later.

The three points that decide reject rate

• Orifice damage: a press that bottoms out on the insert deforms the orifice, and a deformed orifice still assembles. Force-limited pressing, not position-limited pressing, avoids it.
• Gasket eccentricity: a gasket that sits 0.2 mm off centre passes a visual check and leaks later.
• Test method: spray pattern by eye is not a test. Weight per actuation, measured on a balance, is.

What we need from you

• Drawing of the cap, the insert and the actuator, with the orifice diameter
• Target flow rate per actuation and the pump the cap will be paired with
• Material of cap and gasket
• Output per shift, and how many cap sizes share the line

How the project runs

Quote from drawing, tooling design, build, then run-off with your own caps and pumps in our plant in Chashan. Machines are built to your samples and drawings, and the drawing set is agreed before metal is cut.

Send a drawing to [email protected] or call +86-18123647785 to start a quote. Related lines: foam pump assembly machines, blower wheel assembly machines.