Bobbins from supplier spool¶
Reference — Calculation: number of bobbins from one supplier spool
Purpose¶
This calculation determines how many bobbins can be wound from one supplier spool (e.g. a large spool, a coil or a barrel from the supplier) — specified either via the weight or directly via the length of the supplier spool. Optionally, it also calculates how many supplier spools are needed for a desired total number of bobbins.
Inputs¶
| Field | Unit | Meaning |
|---|---|---|
| Supplier spool specified via: | – | Basis of the specification: Weight or Length. Shows the matching fields below. |
| Supplier spool weight: | kg | Only with the Weight basis. Weight of the complete supplier spool, up to three decimal places. Must be greater than 0. |
| Material: | – | Only with the Weight basis. Optional selection of a material from the master data; automatically takes over the stored fineness. |
| Fineness: | tex, dtex, den, Nr_metric, Nr_english | Only with the Weight basis. Fineness of the material with unit selection next to it. Must correspond to at least 1 tex. |
| Ply count: | pcs | Only with the Weight basis. Number of single threads wound together (at least 1, initial value 1). |
| Supplier spool length: | m | Only with the Length basis. Material length of the supplier spool, entered directly. Must be greater than 0. |
| Length per bobbin: | m | Always visible. Material length to be wound onto a single bobbin. Must be greater than 0. |
| Bobbins required (optional): | pcs | Always visible, optional. Target number of bobbins for which you want to know how many supplier spools are needed. |
Mandatory fields
Length per bobbin is always mandatory. Depending on the basis, also supplier spool weight, fineness (at least 1 tex) and ply count (basis Weight) or supplier spool length (basis Length).
Result¶
| Value | Unit | Meaning |
|---|---|---|
| Bobbins per supplier spool: | pcs | Main result: number of bobbins that can be wound completely from the supplier spool, rounded down (a partly wound bobbin does not count). |
| Supplier spool length: | m | Only visible with the Weight basis (calculated from weight, fineness and ply count). With direct length input this tile is hidden, as it would be redundant. |
| Supplier spools required: | pcs | Only visible if Bobbins required is filled in. Rounded-up number of supplier spools for the desired number of bobbins. |
Operation¶
The common structure of all calculation pages (input card, result tiles, Calculate/Clear buttons, history) is described in How calculation pages are structured — here only the special features of this page.
Bobbins required is an optional additional field: if it remains empty, the page only shows how many bobbins come out of one supplier spool. If you enter a target number, the Supplier spools required tile also appears.
Calculation¶
The exact calculation formula is not part of this documentation.