7.94BTR Bobbin Case
It is generally stipulated that a lockstitch machine or a computer lockstitch machine has three screws for fixing the hook. Loosening it can adjust the position of the hook and the straight needle. Then the part that fixes the hook is called the positioning hook, and the position of the hook is generally not easy to adjust.
Introduction of MIM bobbin case 7.94B
| Item | Material | Production Process | Sintering Temperature | Mold | Custom | ||||
Hook case 7.94B | Keep secret | Metal Injection Molding | 1550℃ | To be customized | Yes | ||||
Chemical Composition | Due to the particularity of the product, the chemical composition of this product is kept confidential | ||||||||
Hardness range | Hardness: 55-60 | ||||||||
Available Materials | Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, cemented carbide, high temperature alloy (718, 713) | ||||||||
Finish | Dimensional Accuracy | Product Density | Appearance Treatment | Appropriate Weight | |||||
Roughness 1～5μm | （±0.1%～±0.5%） | 95～100% | Electrolytic polishing | 0.03g～400g） | |||||
SMH-7.94B(D) Ordinary Flat Car Thin Material Black King Kong
Aperture | Ф7.94 | ||||
Max. sewing speed | 4500r.p.m | ||||
SANME NO) | MAKER(Manufacturer) | MACHINE | NEEDLE SLOT | NEEDLE NO | |
a | b | ||||
SMH-7.94B(D) HOOK BASE DLC COATING(Diamond-like diamond-like coating inside the shuttle) | JUKI(Heavy Machinery) | DDL-5550.DDL553ON.DLD-5430.DLD-5430N DLM-5200N,DLU-5490N,DDL-5550U-4 | 1.9 | 7 | 10#--20# |
TYPICAL(Standard) | GC6-1,GC6-28,GC69-1,GC40-1,-2,-4,GC6-1 | ||||
JACK | JK8500 | ||||
BROTHER | DB2-B714-3.B753.B795-013 | ||||
ZOJE | ZJ201-1,8600,8800 | ||||
Illustrate | If you need to customize or buy the final product, you can contact the company's customer service to serve you | ||||
SMH-7.94B(D) Ordinary Flat Car Thin Material Black King Kong
KOBAN | KHS12-S | Aperture | Ф7.94 | |||
HIROSE | HSH-7.94B | Max. sewing speed | 4500r.p.m | |||
SANME NO | MAKER(Manufacturer) | MACHINE(Model) | NEEDLE SLOT | NEEDLE NO | ||
a | b |
| ||||
SMH-7.94B | JUKI(Heavy Machinery) | DDL-5550.DDL553ON.DLD-5430.DLD-5430N DLM-5200N,DLU-5490N,DDL-5550U-4 | 1.9 | 7 | 10#--20# | |
TYPICAL(Standard) | GC6-1,GC6-28,GC69-1,GC40-1,-2,-4,GC6-1 | |||||
JACK | JK8500 | |||||
BROTHER | DB2-B714-3.B753.B795-013 | |||||
ZOJE | ZJ201-1,8600,8800 | |||||
Illustrate | If you need to customize or buy the final product, you can contact the company's customer service to serve you | |||||
Qinhuangdao Zhongwei Precision Machine Parts Co., Ltd. specializes in the production of metal injection molding parts. The company has long-term strategic cooperation with domestic Yongyao, Desheng, Sanming and other rotary hook production international companies such as Japan's Zovin rotary shuttle, and Italy's Simon and other enterprises. Metal injection-molded hook case, material After joint research and efforts with Central South University, the products produced by the company not only have good wear resistance, but also have high hardness. Each year, Desheng supplies 600,000-800,000 hook cases, and 10 other manufacturers. -300,000 bobbin case supply.
How to adjust the lockstitch hook
It is generally stipulated that a lockstitch machine or a computer lockstitch machine has three screws for fixing the hook. Loosening it can adjust the position of the hook and the straight needle. Then the part that fixes the hook is called the positioning hook, and the position of the hook is generally not easy to adjust. If too close or too far. You can only remove a little on both sides of the wide handle of the positioning hook with a grinding wheel, and then you can adjust it. Generally, the clearance between the positioning hook and the rotary hook is 2-3mm. Lubrication method of sewing machine:
(1) Refueling part: each oil hole on the machine head, lubricating the upper shaft and the parts connected to the upper shaft; the parts in the panel and the movable parts connected with each part; lubricating the presser foot bar and needle bar and the parts connected to them; machine Wipe down the movement of the lower part of the plate and add a little oil.
(2) Matters needing attention in maintaining the sewing machine: after the work is completed, insert the needle into the needle hole plate, lift the presser foot, and cover the machine head with the machine cover to prevent dust dust from entering; when starting work, first check the main machine. Items, how heavy is the tread
(3) When positioning the hook, place the needle in the middle of the two dots and then tighten the screw of the positioning hook. The positioning of the second needle bar is to turn the machine head up and you can see that the position of half of the needle eye is too low to break the thread. When the third hook reaches the small slope, the needle must start to move up. This is the standard position of the hook. When the fourth hook and the needle meet, there should be no gap between them. If there is a gap, it is easy to jump the thread. Furthermore, when the hook tip hooks the thread, it must be between 0.5 and 1.5 mm at the upper end of the needle hole. This position is the most difficult to pick. linear.
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