4 types of overlock: the appointment, functions, characteristics

Overlock and rasposhivalnye machine - the equipment for the treatment of textiles. Purpose - using the multi-function Neaten weld or join together separate pieces of material, neaten the edges. From a standard sewing machine different in the work and the yarn feeding while using the 3, 4 or 5 in the cord.

Overlock designed to handle bulk and elastic materials, use them to overcast the edge of the product.

With the help of machines perform rasposhivalnyh flat seam at the junction of the two parts, and tuck the hem stitched by, sheathing edge. Equipment used in work with elastic materials, for the passage of high-load areas (pockets, joints, internal seams).

cheap overlocks

The principle of operation of the equipment - at the same time the involvement of more than 2 cords for stitching and processing of textile edge.

The inexpensive price segment presented four types of vehicles:

• rasposhivalnaya machine;
• overlock;
• koverlok;
• fletlok.

Rasposhivlanaya machine - a device for grinding product details flat seam. processing advantage - the absence of an internal seam and saving the fabric.

Apply the device for joining difficult areas, which account for the maximum load during operation.

The main difference from overlock - the appliance is not overcast the edge and hemming him in a tucked, processing hem and prostrachivaya the front side with one or two straight seams in a series of stitches. The device is available in three varieties: 3, 4, 5 lines.

Overlock - a machine for processing textile edge. Use in a flexible material (jersey), for amplification of seams, which have maximum pressure. With the help of overlock you can not stitch together two pieces.

The device structure includes a blade which is intended for trimming excess material during product processing. Overlock are of three types: 3, 4, 5 thread.

The low price range with good quality are presented mechanical models and apparatuses with 3 active coils.

Koverlok - a device that combines the functions of the previous machines. His task - to treat textiles or run flat edge (rasposhivalny) seam. The device is rarely represented at a low price, but it is cheaper than two separate device.

The basis overlock having 3, 4, and 5 is a single cords principle. Lower bobbin, which can be found in a standard sewing machine - is absent. Instead she mounted two or three looper.

Detail is designed for gripping the thread and podavachi it up to form additional loops. The cheap model 3 two active bobbin looper built that allows the line simultaneously from three strands.

Pay attention to models with mechanical services, automated machines are more expensive. Do not skimp on the automatic tensioning cord, the absence of this parameter affects the quality of the stitching.

Alternative low-cost three-line devices - fletlok. This device, by which is created the base seam rasposhivalny based on two strands.

4-thread overlock

Adding a fourth thread helps to strengthen and diversify the line pattern. The equipment shown in the middle price range. The fourth thread is introduced by means of an additional upper needle.

Pay attention to when choosing a color marking of coils, so as not to confuse the thread during refueling.

Stitching yarn 4 becomes active when the second job to the top of the needle. Feature allows you to simultaneously process the product edge and connect the base seam details.

Rasposhivalnaya machine 4 cords produces double front seam. You can switch only 3 active coils. To extend the feature set of operations is enough to choose the equipment for 5 active coils.

Treatment is intended for industrial sewing products from crude materials. Additional roll activated by the third lower looper, when disconnected apparatus is converted into 4-stitching machine for textile processing.

with four threads Overlock for:

• grinding the edges of bulk tissue;
• processing elastic and knitted materials;
• grinding of the joints, which account for the load in the product during wear;
• strengthening areas that stretch.

Built-in blade allows you to tselnoobrabotanny edge products that do not require further align with scissors. Models with 4 threads are used for professional tailoring of overalls, covers, bags, swimwear and lingerie.

Stitch by machine, stretch with textiles. For this work the elastic yarns or netyanuschiesya any material (cotton and polyester).

Note the model with an automated process filling yarn feeding, control tissue progress as manual debugging 4 strands takes 10 to 30 minutes.

Rasposhivalnaya machine with four reels designed for:

• flat seam stitching of individual parts;
• creating decorative seams;
• enhance product areas, which account for the load during wear;
• edging (sleeves, neck, hem) products from elastic materials such as shirts and underclothes.

Rasposhivalnaya machine 4 reels - automatic device that independently controls the course of the cloth feed and thread, tension. A set of functions on the device - 10-20 operations, depending on the model.

Weight apparatus is 5-11,5 kg. To expand operations using accessories that are not included in the total weight. Release pattern with a box for storing work items and waste collection box (trimming filaments, broken needles).

Line manufactured equipment with 4 coils, resembles a spike. In rasposhivalnoy machine it is on the wrong side, and on the face - a straight line. In case of breakage of one strand is not dissolved.

Structure spikelet stretched with cloth. For such a seam give preference to automatic models.

automatic overlock

Overlock, rasposhivalnaya machine and koverlok are mechanical and automatic. Two types powered by electricity, the difference - in other functions, such as adjustment of the tension of the yarn, cloth feeding, filling the lower looper.

The advantage of automated equipment - high quality lines, reducing the level of marriage. Designed for professional tailoring, accessories, industrial and consumer products.

Overlock presented in the medium and high end of the market.

How it works: set the operation to correct options, harness cords, put the number of active reels. Some models offer full automation with stored in the device memory standard modes and types of lines.

digitally controlled equipment expands the ways of textile processing. Manually fixing machinery is not required, setting by a certified master. Self-management - an additional feature, found in the individual manufacturer.

Parameters included in the sewing process automation:

• refill needle: automatic extension cords through the eye, the lack of this feature reduces the cost of the device.
• Digital display, built into the body: allows you to select or adjust the work option, stitch, read tips and view the embroidery pattern.
• Differential feed: autonomous feed material on the working surface. It lies in the synchronous operation of the lower and upper conveyors that move the textiles under the foot.

Produce models with debugging feed speed individually feet. The function is used for stretching the textile and collecting items in the folds. It allows you to experiment with the materials and operations, expanding the functionality of the equipment.

• the cord tension control: manual and automatic (designed to minimize the number of errors while sewing). Automatic control provides independent tension of the cord, is regulated under the sewing operation.

• Apparatus refueling lower looper: Intended to reduce the time to debug the equipment before starting work by automating the process. Function is present in the fully automatic models.
• Number of operations: digital cameras designed for embroidery, curly decorative finishing material. Specifies the width and the length, frequency and place of stitches.
• knife off: feature is designed to extend the functionality overlock when working with loose fabrics such as chiffon and cotton, for decorating products.

Note that when the automatic equipment parameters width and stitch length, sewing speed (1000-1500 stitches per minute). In view of the tissue is exposed speed parameter for the hem and decorative.

The function is intended to perform a stable line.

Rasposhivalnye machines

The equipment is designed to perform decorative stitches and the joint nature. In the present design the operation panel, a width of 10-40 cm. Along the perimeter of available metric markings.

The basis for the choice of the model - the width between the upper needles. Middle parameter is 5.5-6.5 mm. Score affects stitch width. For continuous operation with industrial products selected width of 6.5 mm, and for clothing and accessories - 5.5-6.0 mm.

The equipment has two or three upper needle. The larger the number, the wider the line will turn. 3 upper needle can create 3-15 kinds rasposhivlanyh lines. Advantage - more operations and increased surface being treated.

Moving the needle, the stitch width is adjustable. Give preference to models with a differential feed function in which the regulated supply of material under the presser foot.

The device is intended for decorating products. In such a model built function determining the maximum stitch length and adjustment of pressure on the foot with different materials.

It is important to define the scope of sewing, giving preference to models with two or three upper needles - depending on the desired line width.

Koverloki

A device for grinding the edges of the product, creating rasposhivalnogo (flat seam). When selecting equipment, look for options that are typical for rasposhivalnogo machine and overlock: the number of needles, loopers, Working width and workstations option.

The invention relates to high-end segment, however, it is cheaper than the two separately acquired the unit. Koverlok designed for complex work with elastic materials and different kinds of knitwear.

When choosing a look for the presence of role seam functions, adjust the cut width of the fabric, which are absent in many complex devices.

Koverlok different from rasposhivlanoy machines presence of an additional lower looper that It allows you to create not only overcast stitch, but also join the individual parts of the product Flat seam.

The device is used for both professional and amateur sewing t-shirts, jumpers, swimwear, underwear, overalls for scuba diving, car seat covers and upholstery.

Choose a model with a wide working space and a high-lift legs to extend the functionality.