How to choose a special automatic sewing machine for lifting belts/safety belts/binding straps and tensioners
As labor costs continue to rise and customers are increasingly demanding product quality, automated computerized pattern sewing machines are increasingly used in the production of lifting belts, safety belts, binding belts and tensioners, especially for reinforced sewing operations. Ordinary flat cars that allow the operator to move the sling to perform tricks are difficult to meet current market requirements due to poor appearance quality.
（Bofulong is a professional manufacturer of lifting belts/safety belts/binding straps and tensioner accessories, and safety hooks.）
1. Thickness of lifting belt
The thickness of the sewing material is the first parameter that should be considered when choosing a sewing machine. The sewing machine’s ability to sew thick materials is also what distinguishes thick material sewing machines from ordinary clothing computerized pattern sewing machines.
2. Sewing range
Each computer pattern machine has a rated sewing range. This working range determines the maximum bartack size (length and width) you can achieve. The size of the reinforced seam you need must be within the X/Y axis travel range of automatic sewing.
Some customers may think that I only need to buy a computerized pattern machine of the highest range to meet all production needs (from large to small). This idea is incorrect. The cost of large-scale computerized pattern machines is relatively high, the speed is relatively slow, and the sewing accuracy is not as good as that of small-scale pattern machines (suitable for “rough work”). Compact small-scale computer pattern machines are faster and can ensure detail quality requirements. Therefore, if funds allow, the best option is to choose different pattern machines according to the corresponding work scope requirements.
（Bofulong is a professional manufacturer of lifting belts/safety belts/binding straps and tensioner accessories, and safety hooks.）
WhatsApp：008613400686286 ，Email：sales@bofsafety.com
3. Structure of sewn products
Slings, safety belts, straps and tensioners are all made of two or more layers of flat synthetic fibers and have no structural problems. However, if it is a product with complex structure such as safety protection products, parachutes, outdoor backpacks, etc., if reinforcement seaming is to be performed in the middle, it is necessary to consider whether the pattern machine needs enough space. Such safety belts or protective products with complex structures often require customized fixtures (bridge frames). We once customized two sets of automatic pattern sewing machines for sewing parachute backpacks for US military industrial enterprises, using this type of fixture.
4. Sewing thread model
The quality and thickness of the sewing thread is also one of the important factors in the strength of the sling/safety belt/binding strap and tensioner stitching. Generally speaking, the thicker the thread, the better the tensile performance of the seam. However, using an excessively thick thread will also affect the sewing efficiency (frequent bottom thread changes) and even reduce the quality of the finished product, because the thicker the thread, the larger the pinhole. In some cases, the fiber structure itself can be damaged. So choosing the right sewing thread is very important.
In addition, the thickness of the thread must correspond to the thickness of the needle of the corresponding size, otherwise thread throwing, floating thread, skipped stitches and thread breakage will easily occur.
5. Hardness of flat sling
The stiffness of flat slings mainly depends on two aspects: material and sewing density. Conventional slings (synthetic fiber slings) are generally made of high-strength polyester filament and do not have hardness problems. However, if a protective interlayer (such as PE material) is added to the middle of the flat sling, it will increase the difficulty of sewing.
Tight seams are the main factor that increases the stiffness of the sling. When producing large-tonnage slings (such as yacht slings, large cargo slings or marine traction ropes), in order to increase the tensile strength of the seams, secondary high-density reinforcement seams must be repeatedly performed. When the second sewing machine is used, the slings It will become very hard, and the needle penetration of a regular sewing machine for thick material patterns may not be enough. In these cases, it is necessary to use an enhanced computer pattern machine
6. Hardware
When producing straps, tensioners and safety belts, a variety of hardware is sewn together with the slings to lock the cargo. If these hardware items are particularly large in size or weight, the workspace or weight capacity of the pattern machine should be considered.
7. Sewing efficiency
For lifting belts/safety belts/binding straps and tensioner hardware accessories, I recommend a professional manufacturer, Bofulong company, www.bofsafety.com, The main products are Safety forged hooks, aluminum hooks,steel carabiners and aluminum carabiners, steel D&O rings,Quick Link,descenders, carabiners, pulleys, fixed rings, connecting rings, ascenders, fall arresters and safety hardness buckles,Safety harness accessories, partition fittings,And other hardware accessories customization.
Due to the rising labor costs, Mingyuan Company continues to develop the “one person, multiple machines” operating mode, that is, one worker can operate 2 or 3 automatic pattern sewing machines at the same time. If funds permit, you can consider customizing this type of integrated sewing equipment, replacing workers with machines, and improving sewing efficiency and quality.
The speed of a pattern sewing machine mainly determines the shuttle type required for sewing. The enlarged semi-rotary shuttle is designed for extremely thick materials and extremely thick sewing threads, but its sewing speed is relatively slow, and the general sewing speed does not exceed 800 stitches per minute. The speed of large rotary hooks can exceed 1,000 revolutions (generally twice that of shuttle sewing), but their processing capabilities for thick threads are poor. If the thread you use is smaller than 840D×3, a rotary hook sewing machine for thick materials is more suitable. Shuttle sewing machines are used to create threads of 840D×3 or above.
8, spare parts
In the automated sewing process, damage to wearing parts and equipment failures are inevitable, let us face it together. With nearly 10 years of sales experience, we have prepared spare parts packages for each automated sewing machine. These accessories can minimize the possibility of unexpected downtime. Of course, domestic express delivery only takes 1-2 days. If you do not allow 1-2 days of downtime, please consider purchasing a spare parts package randomly.
（Bofulong is a professional manufacturer of lifting belts/safety belts/binding straps and tensioner accessories, and safety hooks.）
WhatsApp：008613400686286 ，Email：sales@bofsafety.com
