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Home » Articles » Technology of sewing production

Cutting deck, cutting out the parts and control the quality of cut

The cutting deck is one of the critical operations cutting production. This work is done by highly-skilled workmen-carvers. Before operating the cutter is obliged to check whether all the fabrics are within the rectangle almalki (width and length on both sides) whether the distance between the patterns in accordance with the specifications and clear if the contour lines in obmenka. To cut flooring cutter starts after the permission of the master. Please observe the safety rules. The deck is cut in two ways. 

 By the first method flooring cut machines to pieces, and then cut exactly along the contour lines on a tape machines or wyrobach presses. 

 In the second method, the flooring is cut and precision cut parts machines directly to the floor. 

In the apparel industry the most common first method, which provides high quality cut parts and more rapid turnover of scaffold tables. A big part (shelves, backs, loose pants, etc.) cuts out completely on the table, in order for transportation to tape machines to prevent displacement of the parts.

If no tape machines used the second method. The flooring is cut into sections suitable for processing on a tape machine with manual mobile cutting machines ASM-2 or ASTM-1 depending on the height of the flooring and fabric. To rassekaya flooring throughout the length of the cut edge. On a tape machine, it is recommended to cut a piece of the flooring with a maximum size of 80 x 60 cm; therefore, cutting the deck, items exceeding these dimensions, cut exactly along the contour lines on the mobile cutting machine. Carver must ensure that the knife was always sharp and not crumpling up the fabric.

Machine motion at accurate cut should be directed so that the knife blade is moved in the middle Cretaceous contour lines of detail. 

The cut part of flooring transportyou to the tape machine or vyrobni presses manually using the mobile tables on wheels (their height is equal to the height of the cutting table, length 0.8 m and width 0.6 m) or mechanized conveyors. Band knife machines, it is recommended to set next to the cutting tables. 

Observe the following safety rules and cutting when working on a tape machine:

to work to check the serviceability of the machine and protective devices; 

install the fuse from the cut of the arms, the height of the flooring; 

cut, filed on the part of the boards on the details (in case of multiple parts in one piece); 

template put a stack of parts, aligning it around the circuit; 

when feeding parts to a blade of a belt knife to prevent displacement of the canvases and tilting bundles; 

cutting of small parts from a great height flooring (valves, piping, leaves, top, collar, etc.) to divide the pack into two and each part to cut out the patterns separately; 

to provide a depth of nadreck;

small parts cut on the metal patterns or thick cardboard, and banded with a metal band, by overlaying and combining patterns along the lines of almalki; 

cut parts to verify the imposition of patterns on the top and bottom of the canvas flooring; 

the set of test patterns to place on a special bracket, which is a stand with a turning circle, on which are placed the hooks for hanging patterns. 

The following are the most common in the production of cutting defects and their causes.

The local textile defects in the individual parts, do not allow MRTU; causes - failure to verify the fabric controllers and netilmicin. 

3аужение and the shortening of the details can be for the following reasons:

due to shrinkage or stencil patterns used in omelka reason for the marriage - making patterns of unseasoned cardboard or paper, and failure to replace them; 

due to excessive tissue tension when nastilanie (shortening of details); 

due to improper almalki parts, pripudrivania stencil, or improper cutting.

Distortion of parts due to improper layout patterns or a large warp yarns in the fabric. 

The incorrect location of nasechek and deep the notch obtained in the malfunction of the cutting machine. 

Asymmetrical details paired with cutting fabrics face down; after cutting is not checked and trimmed parts by overlaying them.

The wrong direction of the NAP or pattern tissues in all parts of the kit or in separate parts due to violation of rules when nastilanie tissue. 

Defects of cutting production corrects the following:

if a defect is discovered in one part, you need to remove a bunch of these parts from the entire set and every detail to verify on the patterns and reshape to a smaller size, or growth; 

if the defects detected in several parts or in the whole bundle, it is necessary to redraw all the details of the entire packet. 

In all cases, the defective cut, correctable or uncorrectable (marriage), make the act to identify the perpetrators and bring them to liability.

Control the quality of cut should be carried out in the process cutting the production by the performers for all jumps. In addition, employees of technical control Department of the factory to check the quality of the finished cut when you completed it.



Category: Technology of sewing production | Added by: 19.10.2017
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