Quick answer: Crew issue, hotel refits and broadcast kits pull Travel Case Production in three directions: plates and latches, colour changeover, heavy wheel sets. Split the line by order shape and labour shifts 4.6 yuan a unit.
Table of contents
- How Travel Case Production splits by order shape
- Airline crew issue: plates before latches
- Hotel refits: colour changeover and rhythm
- Broadcast kits: heavy wheel sets on site
- FAQ
1. How Travel Case Production splits by order shape
A trading house serving an airline pushed 480 crew cases into 18 days, putting the run on an injection line loaded with hotel work. The first 120 came off with plates 1.5 mm off the sample: nobody swapped the optical stop.
The fault sits in scheduling. Change the order shape and the sequence moves with it, so Travel Case Production split only by shell route pays back in rework what it saved on changeover.
| Order shape | Lot size | Shell route | Focus | Usual failure |
|---|---|---|---|---|
| Airline crew | 300–600 | Injection, 2.4 mm | Plate, latch | Stop unchanged, 1.5 mm drift |
| Hotel refit | 2000–3000 | Two-cavity injection | Purge, lining | First 30 shells mixed |
| Broadcast | 60–120 | Vacuum formed, 2.0 mm | Wheel, handle | Thicker boss, same wheel |
| Gift | 500–1000 | Vacuum formed, 1.8 mm | Print, packing | Register off 0.2 mm |
All four share one set of shell machines; rhythm separates them: 40 units a day on crew work, 300 on hotel, 8 on a kit.
2. Airline crew issue: plates before latches
Crew assembly in Travel Case Production starts with the plate, not the latch: the plate fixes the reference and the latch follows it.
A six-digit number goes on by laser, 12 seconds a unit, characters 5 mm high, 35 mm right of the face centreline. The latch bore then follows the plate edge within 0.5 mm. The combination body takes two M3 screws at 1.2 N·m; past 1.5 N·m its shell cracks, and the crack shows only under raking light, so it survives every station. That is the most-missed defect in Travel Case Production.
Marking before paint leaves characters 0.04 mm under the film and the scanner refuses them; marking after paint burns a halo. What holds is paint, 40 minutes of cure, an alcohol wipe, then mark.
3. Hotel refits: colour changeover and rhythm
Hotel work is one model, four colours, four deliveries. A 2400-unit order arrives as four lots of 600, so the press changes colour four times. The cost is purge, not pigment: three passes at 40 minutes, 8 hours total, enough machine time for 210 shells. Quote those 8 hours or the 22-day promise breaks on the third lot.
Cycle time in Travel Case Production is 68 seconds on a two-cavity tool, so 34 seconds a shell and 1050 shells a shift. At that beat the lining station needs two operators.
Mixed first-off is the classic failure: dosing starts before the purge ends and the first 30 shells carry pale streaks paint cannot cover. Judge under a D65 booth, first piece of every lot, and stop when the colour difference passes 1.0.
4. Broadcast kits: heavy wheel sets on site
Broadcast lots are small in Travel Case Production and the demand sits in the load: 32 kg of gear dragged 2 km between turf and asphalt.
Wheel diameter goes from 50 mm to 60 mm, cutting impact over a 20 mm joint by 30 percent. Boss bolts move from four M4 to four M5 at 2.7 N·m, plus a 1.5 mm steel plate across the base. Handle wall rises from 1.1 mm to 1.3 mm and free play drops from 8 mm to 5 mm; an empty case feels identical, but load 32 kg and anything past 5 mm means the clearance has opened.
| Load band | Wheel | Boss bolts | Handle wall | Pass line |
|---|---|---|---|---|
| Up to 15 kg | 50 mm | 4 × M4, 2.2 N·m | 1.0 mm | Play under 8 mm |
| 15–25 kg | 55 mm | 4 × M4, 2.5 N·m | 1.1 mm | Play under 6 mm |
| Above 25 kg | 60 mm | 4 × M5, 2.7 N·m | 1.3 mm | Play under 5 mm |
Cold is the last gate: soak at -25℃ for 4 hours, then push. Tread must not harden and split. Southern plants skip it, the fault shows in a snow field, and return freight runs 7 times the processing cost. In Travel Case Production the cold chamber is a station, not an option.
Conclusion
The four shapes differ in a few numbers: a plate 35 mm off centre, 8 hours of purge, a 60 mm wheel, 5 mm of play. Fix them and the schedule changes shape without the plant re-learning the job. The steps have an order; the criteria do not, which is why Travel Case Production is worth splitting by order shape.
This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.
Related Reading
- How shell forming meets the assembly beat
- Walking and drop tests at the gate
- Sequencing stations on a case line
- Airdrop case assembly at field sites
Related Products
- 8 Series — Gun Cases; Military Equipment Cases; Camera Equipment Cases; Drone Cases; Watch Cases; Knife Cases; First Aid Cases; Electronics Equipment Cases
- WL8-2812 PP Gun Case — model WL8-2812
- All protective cases and toolboxes: 7 series, 158 models