4 Rolls Cylinder Boring Machine 11 8*2000 Building Materials Section Roller

Min.Order: 1

Product origin: Ma'anshan, Anhui, China

Infringement complaint:

Complaint

US$ 10000

Description

Product Description

W12-6×1500 type four roll plate bending machine is sheet metal bending, correction machinery. Special for sheet metal forming bending work. The pre-bending and crimping of various types of cylinder and arc workpiece can be completed after a feeding. With the help of auxiliary devices, the conical cylinder can be rolled. Rough shaping work can also be done on the sheet metal.

Specifications

No.	Item	Unit	Figure
1	Machine type	mm	6×1500
2	Steel plate bending force	MPa	235
3	Steel plate max width	mm	1500
4	Steel plate max pre bending thickness	mm	5
5	Steel plate max thickness	mm	6
6	Upper roller diameter	mm	170
7	Bottom roller diameter	mm	160
8	Side roller diameter	mm	140
9	Rolling speed	m/min	4
10	Minimum rolling diameter	mm	250
11	Bending angle		≥75°
12	Hydraulic system working pressure	MPa	16
13	Motor power	Kw	4

Overview of the main structure of the product
1. Structure overview
1. The upper roller is an active roller, the lower roller and the side roller are driven rollers, the upper roller position is fixed, the lower roller and the side roller can be lifted and moved, the upper roller is a mechanical transmission, the rotation of the lower roller and the side roller is driven by the friction between the steel plate and the rollers. The lower roller and the side roller are driven by the two ends of the oil cylinder to realize the lifting movement. The overturning and resetting of the front bearing body of the upper roll is carried out by the overturning oil cylinder, and each roller bearing body and oil cylinder are installed in the left and right ends of the frame. The left and right frame is the main body of the four-roll plate rolling machine. It adopts welding structure and is installed on the whole base. All operation of the machine is carried out on the operating platform.
Compared with the symmetrical three-roll plate coiler, the four-roll plate coiler can directly prebend the end of the plate without the aid of other equipment mold, and the remaining straight edge is smaller; Compared with the asymmetric three-roll plate coiling machine, it can not reverse the plate, and roll into the workpiece. This not only improves the efficiency, to ensure the quality of the workpiece, and the process is simple, easy to operate, reduce the labor intensity of workers.
2. Main transmission mechanism
The upper roll of the four-roll rolling machine is the main driving roll, which rotates at a linear speed of about 5 meters per minute. The hydraulic motor drives the gear reducer installed on the upper roll to drive the upper roll to rotate.
3. Auxiliary transmission mechanism
The auxiliary drive of this machine is: the lifting of the lower roller and the two sides of the roller, the toppling and resetting, all adopt hydraulic drive, the lower roller and the two sides of the roller can be lifted at the same time, can also be lifted separately.
Note: The maximum height difference between the two sides of the side roller shall not exceed 20mm.
4. Rolling process
There are many kinds of rolling process, users can decide according to their own process, the following provides a reference (see Figure 3).
a Operate the lower roller to rise so that its bus bar is slightly greater than the working thickness of the lower roller, then operate the side roller on the feeding side to make its upper bus bar on the same level, and then operate the other side to rise between the upper and lower rollers.
b Feed: Feed the steel plate horizontally, make the end of the steel plate contact with the front roller to align, and then lower the front roller to the original position.
c Clamp the steel plate and prebend the end: according to the thickness and material of the steel plate, adjust the pressure of the lower roller loop to a certain value within the range of 5-10Mpa, operate the lower roller to rise and clamp the steel plate, and start the upper roller to rotate. When the steel plate moves to the bending position, the upper roll stops rotating. At this time, the left end of the center line of the upper and lower roller should be left with the necessary clamping length equal to 1.5 times the thickness of the plate. Then raise the back side roller and prebend the end of the steel plate.
d Prebend the other end of the steel plate with the front roll. After the left end is prebent, lower the back roll to the original position and start the upper roll. When the steel plate moves to the above bending position, the upper roll stops rotating. Operate the front roller to rise the other end of the pre-bent steel plate, and adjust the pressure of the roller loop on both sides at about 16-19.5Mpa.
e Preliminary bending: Adjust the front and rear side rolls to the corresponding positions required by the work, and start the upper roll for the final forming bending.
f forming bending: Adjust the front and rear side rolls to the corresponding positions required by the work, and start the upper roll for the final forming bending.
g Take out the workpiece: after bending, lower the lower roll to the lowest position, the workpiece along with the rollers on both sides to drop to a certain position at the same time, turn over the head, lift the workpiece parallel to the upper roll, take out the workpiece. Complete a work loop.
5. Machine capacity conversion
The coiling machine is determined by the thickness of the coiling plate, the width of the coiling plate, the diameter of the drum and the yield limit of the plate. In practice, the workpiece that needs to be processed on the same plate rolling machine is various. The above four parameters all have different requirements. Therefore, four main parameters need to be converted to each other. In capacity conversion, based on the machine in the maximum working capacity of the strength and stiffness requirements as the standard, comprehensive consideration, after the change of drum diameter, plate yield limit and plate width, reasonable choice of plate thickness.
The formulas listed below are for user reference only.
The notation of this article:
B -- Maximum roll width (mm) specified in the machine
H -- Maximum coil thickness (mm) at maximum coil width specified by the machine
D -- Minimum reel diameter (mm) for maximum reel width and thickness specified by the machine
σs -- Machine-specified sheet yield limit (245MPa)
B2 -- Width of sheet to be rolled (mm)
H2 -- Maximum plate thickness (mm) allowed for the workpiece to be rolled
D2 -- Diameter of reel to be rolled (mm)
σs2 -- Sheet yield limit of the workpiece to be rolled (MPa)

Four. Hydraulic system
The function of the hydraulic system is to drive the four oil cylinders on both sides of the roller to realize the single-end lifting and synchronous lifting of the side roller respectively. Drive the two oil cylinders of the two lower rollers to realize the single-end lifting and synchronous lifting of the lower rollers; Drive the inverted oil cylinder to realize the inverted dumping and reset. I. Introduction to the system
The system has seven executive hydraulic cylinders, the left roller two lift cylinder, the right roller two lift cylinder, the lower roller two lift cylinder, overturn the cylinder. The system uses the high pressure quantitative gear pump as the power source, and the superimposed hydraulic valve as the control component. The whole hydraulic system is composed of the pressure regulating circuit, the synchronous circuit and the speed circuit. The system has the characteristics of simple pipeline layout, less leakage, convenient maintenance and debugging.
4.1. System installation
After the installation of the mechanical body of the plate rolling machine, the hydraulic power box is hung on the position specified in the foundation diagram, the rubber hose between the hydraulic power box and the plate rolling machine is connected, and the O-ring sealing ring is installed correctly when connecting the rubber hose. The air filter on the hydraulic power box is added enough of the designated brand of hydraulic oil, the power cord is connected, and then waiting for the test run.

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