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Page 45 - Shawl Weaving Artisan - TP
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    Textile & Handloom                                                                Exercise 1.3.27

                Shawl Weaving Artisan - Power Looms and Handlooms

                Dobby weaving techniques and chain preparation

                Objectives : At the end of this exercise you shall be able to
                •  identify different types of dobbies
                •  develop hands-on skills in dobby weaving and chain preparation.

                  Requirements

                   Tools/Equipment’s/Instruments                      Materials
                   •  Dobby chain paper or card        - 1No.         •   Note book                         - 1No.
                   •   Ruler                           - 1No.         •   Pencil                            - 1No.
                   •   Scissors                        - 1No.         •   Sharpener                         - 1No.
                   •   Dobby chain hook or needle      - 1No.         •   Eraser                            - 1No.
                   •   Graph paper                     - 1No.

                PROCEDURE
                TASK 1: Different types of dobbies
                1  Mechanical dobby loom                              2  Follow the installation prompts to install the dobby
                Step 1: Prepare the loom                                software.
                1  Clean the loom to ensure it’s free from dust.      3  Launch the software and ensure it’s working
                                                                        correctly.
                2  Check the  loom’s  tension to  ensure it’s  even and   Step 2: Connect the loom to the computer
                   consistent.
                Step 2: Set up the harnesses                          1  Connect the loom’s communication  cable to the
                                                                        computer.
                1  Attach the harnesses to the loom’s harness frame.  2  Configure  the communication settings on the
                2  Adjust the  harnesses to  ensure they’re evenly      computer and loom to ensure they’re communicating
                   spaced and aligned.                                  correctly.
                Step 3: Set up the dobby chain                        Step 3: Set Up the loom’s parameters
                1  Cut the dobby chain to the required length.        1  Set up the loom’s parameters such as the warp and
                2  Thread the dobby chain through the harnesses.        weft yarn counts, weave type, and dobby pattern.
                3  Secure the dobby chain to the loom’s dobby chain   2  Enter the yarn information, such as the yarn type,
                   holder.                                              weight, and color.
                Step 4: Set up the shedding mechanism                 Step 4: Design and upload the dobby pattern
                1  Attach the shedding  mechanism to the loom’s       1  Design the dobby pattern using the dobby software.
                   harness frame.                                     2  Upload the dobby pattern to the loom.
                2  Adjust the shedding  mechanism  to ensure it’s     3  Verify the dobby pattern on the loom’s display
                   working smoothly.                                    screen.
                Step 5: Set up the weft yarn system                   Step 5: Thread the warp yarns
                1  Attach the weft yarn system to the loom’s weft yarn   1  Thread  the warp yarns through the loom’s warp
                   holder.                                              beam and heddles.
                2  Thread the weft yarn through the weft yarn system.  2  Tension the  warp yarns to  ensure they’re evenly
                Step 6: Test the loom                                   spaced and tensioned.
                1  Test the loom’s shedding mechanism to ensure it’s   Step 6: Set up the weft yarn system
                   working smoothly.                                  1  Set up the weft yarn system, including the weft yarn
                2  Test the loom’s weaving performance to ensure it’s   feeder and take-up roller.
                   producing the desired fabric.                      2  Thread the weft yarn through the weft yarn feeder
                2  Electronic dobby loom                                and take-up roller.
                Step 1: Install the dobby software                    Step 7: Test the loom
                1  Insert the dobby software CD into the computer.    1  Test the loom’s shedding mechanism to ensure it’s
                                                                        working correctly.
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