CN2379231Y

CN2379231Y - Hydraulic type three roller machine for bending metal sheet

Info

Publication number: CN2379231Y
Application number: CN 97209253
Authority: CN
Inventors: 张本源
Original assignee: Hubei Heavy Machine Group Co L
Current assignee: Hubei Ezhong Heavy Machinery Co., Ltd.
Priority date: 1997-01-15
Filing date: 1997-01-15
Publication date: 2000-05-24
Anticipated expiration: 2007-01-15

Abstract

The utility model relates to a hydraulic three-roller machine for bending metal sheets, which comprises a right machine frame, a reversing frame (left machine frame), an overturning device, a bed piece, an upper roller, a lower roller, a hydraulic cylinder and a main transmission device, wherein, the hydraulic cylinder is positioned above the upper roller. The machine has the differences that the hydraulic cylinders are fixed to the right machine frame and the reversing frame separately. The right machine frame is fixed to the bed piece. The reversing frame is hinged on the bed piece. Two piston rods of the hydraulic cylinders are connected with the bearing seats of both ends of the upper roller. The lower roller is arranged on a horizontal sliding rail of the bed piece. The hydraulic cylinder of the utility model uses a rodless cavity to work, and the machine frame is not moved. Therefore, the dimension of the bed piece can be decreased, and the disadvantage the upward pull force applied on the machine frame makes the structure of the sliding rail complicated can be avoided.

Description

Hydrauic three-roller plate bending machine

The utility model relates to a kind of three rolls plate bending machine, and particularly a kind of symmetrical expression or top roll are not done the improvement of the asymmetric veneer reeling machine that moves horizontally.

Two hydraulic cylinders of present top roll universal Hydrauic three-roller plate bending machine are installed in top roll top, use rodless cavity work, are connected by slideway between frame and the lathe bed, and hydraulic cylinder, frame, top roll can slide along slideway together, and lower roll is mobile.Because the space that must reserve move to frame make the lathe bed broad, thereby make, transport difficulty strengthens; Frame is subjected to pulling force upwards during work, and slideway must overcome this pulling force and make its complex structure.

Present horizontal down-regulation type or symmetrical expression Hydrauic three-roller plate bending machine, hydraulic cylinder all places in the lathe bed of top roll below or left hydraulic cylinder places in the lathe bed, right hydraulic cylinder places and is positioned at the top roll top in the right frame, all pressurize with rodless cavity with rod chamber pressurization, right cylinder during loaded work piece, top roll is depressed with rod chamber pressurization or left cylinder.So the big or cylinder diameter of hydraulic cylinder cylinder diameter small one and large one, maintenance difficult.

Present plate-rolling machine for ship is generally symmetrical expression or horizontal down-regulation type, hydraulic cylinder all places the top roll top, is installed in the frame of the left and right sides frame but the fixing nothing of left frame and lathe bed is touched the pillow respectively, the workpiece that processes can not axially take out from top roll, can only can not roll up full circle by crooked circular arc.

The purpose of this utility model provides a kind of Hydrauic three-roller plate bending machine, the rodless cavity work of its hydraulic cylinder, and frame does not move, thereby can reduce the lathe bed size, and avoids overcoming the suffered pulling force that makes progress of frame and the shortcoming that makes the slideway structure complexity.

Scheme of the present utility model is: comprise right frame, the frame of touching the pillow (left frame), tilting device, lathe bed, top roll, lower roll, hydraulic cylinder, main drive, hydraulic cylinder is positioned at the top roll top, its difference is that hydraulic cylinder is separately fixed at right frame and touches the pillow on the frame, right frame is fixed on the lathe bed, the frame of touching the pillow is hinged on the lathe bed, two hydraulic cylinder piston rods link to each other with the bearing block at top roll two ends, and lower roll is placed on the lathe bed horizontal slide rail.

Main drive reaches independently reducing gear, the low bearings of coefficient of friction such as all or part of employing rolling bearing of the bearing of journals of working roll, backing roll, filmatic bearing for two motors that have than high-slip that drive two lower rolls respectively.

The high speed shaft of two reducing gears is turned round shaft coupling or limit by limit and is turned round clutch and link.

Hydraulic cylinder of the present utility model is positioned at the top of top roll, depresses with rodless cavity during work, and pressure is big; Frame is fixed on the lathe bed, and the lathe bed size is reduced; Asymmetric if desired pre-bending, lower roll adopts slide rail and lathe bed to link, lower roll can along slide rail move horizontally become with top roll asymmetric arrange since during work lower roll be subjected to downward pressure, its guide rail can adopt simple structure, thereby has overcome the shortcoming that is subjected to make to upper pulling force the slideway structure complexity because of frame.

Fig. 1 is the utility model front view.

Fig. 2 is the utility model vertical view.

As shown in FIG., this veneer reeling machine comprises left frame 3, right frame 9, the frame 2 of touching the pillow, tilting device 11, lathe bed 7, top roll 4, lower roll 6, hydraulic cylinder 10, main drive 12, hydraulic cylinder be positioned at top roll top and be fixed on right frame and the frame of touching the pillow on, the work of employing rodless cavity, frame is fixed on the lathe bed, and lower roll links by slide rail 8 and lathe bed.

During the work of present embodiment horizontal down-regulation type Hydrauic three-roller plate bending machine, the steel plate charging is between top roll 4 and lower roll 6, during load depresses, place two hydraulic cylinders, 10 rodless cavities in frame 2 and the right frame 9 of touching the pillow to pressurize simultaneously respectively and break top roll 4 downward compressed steel plates, steel plate is crooked under top roll 4 and the 6 three roller effects of two lower rolls, main drive 12 drives 6 rotations of two lower rolls moves steel plate between top roll 4 and lower roll 6, steel plate bends to identical radius everywhere.When asymmetric pre-bending steel plate two ends, lower roll 6 moves horizontally along slide rail 8, and backing roll 5 is followed mobile, and 4 one-tenth asymmetrics of lower roll 6 and top roll arrange that one of them lower roll is nearer from top roll 4, makes steel plate plate end straight flange little, and the steel plate overwhelming majority is subjected to bending.After workpiece processed, tilting device 1 drove frame 2 overturnings of touching the pillow, and the workpiece cylinder can axially take out along top roll 4, and this moment, top roll 4 was in cantilever position, and by bascule 11 balances, the frame 2 of touching the pillow after workpiece the takes out supporting top roll 4 that resets is worked and finished.

The main drive 12 of this veneer reeling machine can be two of driving two lower rolls 6 respectively to have than the motor of high-slip and two reducing gears independently, the little bearings of coefficient of friction such as while all or part of employing rolling bearing of roller journal or filmatic bearing, to eliminate the mechanical interference of two lower rolls 6, reduce the friction loss of roller journal, make two drive units all can satisfy the requirement that drives at the symmetrical expression roll bending with in than the thin slightly asymmetric roll bending process of symmetrical expression roll bending maximum thickness of slab.Turn round shaft coupling or limit at the high speed shaft of this reducing gear by limit and turn round clutch and link, can be when asymmetric pre-bending, because of little, can not transmit enough driving torques from the frictional force of top roll 4 lower roll far away, unnecessary moment of torsion is delivered to another lower roll and make motor.

Claims

1, a kind of Hydrauic three-roller plate bending machine, comprise right frame, the frame of touching the pillow (left frame), tilting device, lathe bed, top roll, lower roll, hydraulic cylinder, main drive, hydraulic cylinder is positioned at the top roll top, it is characterized in that hydraulic cylinder is separately fixed at right frame and touches the pillow on the frame, right frame is fixed on the lathe bed, the frame of touching the pillow is hinged on the lathe bed, and two hydraulic cylinder piston rods link to each other with the bearing block at top roll two ends, and lower roll is placed on the lathe bed horizontal slide rail.

2, by the described Hydrauic three-roller plate bending machine of claim 1, it is characterized in that main drive is that two motors that have than high-slip that drive two lower rolls respectively reach independently reducing gear, the low bearings of coefficient of friction such as all or part of employing rolling bearing of the bearing of journals of working roll, backing roll, filmatic bearing.

3, by the described Hydrauic three-roller plate bending machine of claim 2, the high speed shaft that it is characterized in that this two reducing gear is turned round shaft coupling or limit by limit and is turned round clutch and link.