BAOTE combined drawing machine is the leader in the production of the coil to bar, coil to coil and bar to bar combined drawing machine both for ferrous and non-ferrous metallic materials, and it has been supplying, for more than 20 years, innovative solutions in the cold finishing and drawing of tubes and complete equipment.
BAOTE started in 2000 as an engineering company and has grown continuously since them and today is one of the leading producers of equipment for the bar and tube finishing. Due to its highly innovative combined drawing machine design, BAOTE is recognized as the most advanced company in its field. So customers in every industrialized area of the world are using equipment built by BAOTE to their satisfaction.
The bar drawing machine consists of rolling head, pre-straightening, drawing, straightening, shearing, and polishing.
1. Head rolling machine
The head rolling machine consists of two pairs of rollers with the same roll diameter and a series of variable-section rolling grooves. Two pairs of rollers are installed horizontally and vertically on the same frame. When making the chuck, the head of the bar is rolled thinly in two pairs of rollers in order to facilitate the penetration of the mold.
2. Pre-straightening device
The pre-straightening unit performs initial wire straightening for the wire fed up to the drawing die. There are three fixed rollers and two movable rollers on the machine base, which can adapt to the straightening of various specifications of bar stock. The purpose of pre-straightening is to straighten the coil material before entering the man-machine line because residual coil stress needs to be released before drawing.
3. Drawing mechanism
The main shaft coming out of the reducer is provided with two end cams (the same cams, the positions of which are different from each other by 180 °). The natural rotational action of the drawing FLANGE CAM is converted into a linear motion to drive the drawing carriage. The wire is gripped by the jaws in the carriage and pulled through the drawing dies.
4. Precision straightening machine
The straightening machine consists of 7 horizontal rollers and 6 vertical rollers to straighten the drawn bar. Bar exiting the draw dies is straightened through vertical and horizontal rollers.
5. Shearing mechanism
A multi-piece friction electromagnetic clutch and an end cam are arranged on the transmission shaft of the reducer, and a cutter for cutting is provided on the frame for the cut-to-length bar cutting. Flying Shearing units are available with shear type. Specification of the flying shear will depend on the type of wire processed.
6. Polishing machine
The bar enters the first pair of polishing discs through the guide plate 3, then passes through three straightening trumpets, and then enters the second pair of polishing discs. The polishing disc has a certain angle to make the bar rotate forward. The polishing speed must be greater than the drawing speed and straightening speed. The general polishing speed is 1.4 times the drawing speed.
Combined drawing machine:
The Combined drawing machine is a high-precision, high-efficiency, stable performance metal rod pipe professional processing equipment. It draws wire rods once and shapes them, and then special equipment for precision silver bright bars is produced after straightening and cutting. It also has precise geometry, good surface roughness (also called smoothness), high dimensional accuracy, and improved production efficiency, Reduce labor and site costs and other advantages.
The unit has the following functions: unwinding, initial straightening, drawing, fine straightening, length cutting, feeding, calendering, straightening, and product collection. Multi-step process in one of the fully automated processing equipment, and can process a variety of special-shaped materials, such as round, hexagonal, square, flat square and many other profiles.
Our production of LBJZ-2, LBJZ-4, LBJZ-6, LBJZ-10 combine drawing machine through to bending of the round bar, hexagonal bar, square bar of non-ferrous metal and ferrous metal material, repeated bending, stretching to reach the straightening effect. Use the polishing machine or vertical type two roller machine polishing equipment pressure light to achieve the bright appearance of rod material surface.
LBJZ-2, LBJZ-4, LBJZ-6 combined with drawing machine includes the discharge frame, rough straightening machine, drawing machine, precise straightening machine, CNC hydraulic shearing machine, conduit box, polishing machine, chamfering machine, rack. LBJZ-10 combined with drawing machine consists of uncoiler, rough straightening machine, drawing machine, precise straightening machine, shearing machine, and machine material frame, two vertical roller machine, rack.
Combined drawing machine processing range:
Raw material: coil or rod
Material: black metal (free cutting iron, pure iron, stainless steel, bearing steel, high speed steel, alloy steel, special steel)
Non-ferrous metals (copper, copper alloys, aluminium and aluminium alloys)
Finished product specifications: round 3-40, square 3-24, hexagonal 3-26, and special shape (need drawing confirmation)
The characteristics of the machine:
1, automatic production: only in the unwinding and rewinding need to operate, reduce the labor and improving the production efficiency, a whole line machine only one guard and production efficiency reached 60 meters per minute;
2, the performance is stable, the working time can be up to 16 hours a day of uninterrupted work
3, high quality of finished product of processing: surface rough degree of Ra0.4-1.6 and straightness of 0.3-0.8
|Rated drawing force (KN)||20||40||60||80||100||150||300|
|Drawing speed (m/min) electrodeless||60||60||50||50||45||40||25|
|polishing speed (m/min)||80||80||80||80||80||80||80|
|spec. of product (round) (mm)||Φ3-Φ8||Φ4-Φ12||Φ6-Φ16||Φ8-Φ22||Φ10-Φ25||Φ15-Φ30||Φ20-Φ40|
|spec. of product (square) (mm)||S3-S6||S4-S10||S6-S12||S8-S16||S10-S19||S15-S24|
|spec. of product (hexagonal) (mm)||H3-H7||H4-H11||H6~13||H8-H17||H10-H22||H15-H26|
|length of product (m)||2-6||2-6||2-6||2-6||2-6||2-6||2-6|
|surface roughness (rod)||≤0.8||≤0.8||≤0.8||≤0.8||≤0.8||≤0.8||≤0.8|
|straightness accuracy (rod)(mm/m)||≤0.1||≤0.1||≤0.1||≤0.1||≤0.1||≤0.1||≤0.1|
|total motor power (kw)||80||93/97||132||162||181||240||480|
|main motor power (kw)||45||55||75||90||90||132||160*2|
|Fine straightening configuration||polishing machine||polishing machine /Vertical two-roll machine (TR10)||Vertical two-roll machine (TR15)||Vertical two-roll machine (TR20)||Vertical two-roll machine (TR20 or TR30)||Vertical two-roll machine (TR30)||Vertical two-roll machine (TR40)|