CN103934309A - Expanding-shrinking mechanism of flying shear production line unwinding machine - Google Patents

Abstract

The invention provides an expansion and contraction mechanism of a flying shear line unwinding machine, which includes a frame, a motor, a main shaft transmission system fixed on the frame, and a reel device; the main shaft transmission system includes a gear box, a main shaft, The main shaft is assembled in the rolling bearing, one end of the main shaft is connected to the gearbox, and the gearbox is connected to the motor; the reel device includes a brake disc, a cylinder, a pressure plate, multiple arc plates, and multiple moving blocks. The disk and the cylinder are connected to each other and set on the main shaft. Multiple arc plates are evenly distributed around the main shaft and constrained by the expansion rubber ring. The cylinder is connected to the arc plate; Between the arc plate and the main shaft, the moving block is matched with the main shaft thread. The invention uses a motor instead of a hydraulic cylinder as a power source. The main shaft and the moving block are threaded. When the main shaft rotates under the drive of the motor, the moving block moves along the thread to realize the expansion of the reel. The structure is simple, easy to assemble, and low in cost.

Description

Expansion and contraction mechanism of flying shear line uncoiler

technical field

The invention belongs to the field of machinery, in particular to an expansion and contraction mechanism for a flying shear line unwinding machine.

Background technique

The flying shear line is a production line that flattenes coiled metal sheets, cuts them into specified lengths, and stacks them. The main components of the flying shear line are unwinder, leveler, feeding mechanism, flying shear shearing machine, stacking device, feeding trolley, etc. Among them, the unwinding machine is mainly used for unwinding sheet metal rolls. Different sheet metal rolls have different diameters. Therefore, when loading sheet metal rolls on the unwinding machine, it is necessary to adjust the unwinding machine roll through the expansion and contraction mechanism. The diameter of the barrel is adjusted accordingly to the size of the sheet metal coil.

In the prior art, the hydraulic cylinder is used to provide power for the reel expansion and contraction mechanism of the unwinder, that is, the change of the pressure of the hydraulic cylinder drives the change of the diameter of the main shaft, and the axial reciprocating movement of the moving block on the main shaft controls the arc plate of the reel. Expansion and contraction, thereby changing the diameter of the reel. However, the hydraulic cylinder and its control system make the expansion and contraction mechanism complex in structure and cumbersome to assemble. Moreover, the hydraulic cylinder and its control system are only used during unwinding, and are idle for the rest of the time, making the cost higher.

Authorized announcement number: the Chinese utility model patent of CN203389997U discloses "a kind of expansion and contraction mechanism for steel plate coiling shaft", and described steel plate coiling shaft is a long cylindrical structure that is made up of four fan blades, and described expansion and contraction The mechanism includes an expansion and contraction main shaft and a plurality of expansion and contraction slant bars, the expansion and contraction main shaft is set at the center of the cylindrical mechanism, and the plurality of expansion and contraction slant bars are equally arranged on the four leaves On the blade; the expansion-shrinkage main shaft is provided with a groove relative to the position of each expansion-shrinkage oblique tip bar, and each expansion-shrinkage oblique tip bar can be embedded in the groove on the corresponding expansion-shrinkage main shaft. Through the above method, the expansion and contraction mechanism for the steel plate coiling shaft described in the utility model can realize the seamless closing of the blades of the steel plate coiling shaft, so that no blades will be left on the steel strip when the steel strip is coiled. indentation.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides an expansion and contraction mechanism of the flying shear line unwinder, which directly controls the expansion and contraction of the reel of the unwinder by the spindle motor, thereby changing the traditional method of controlling the expansion and contraction of the reel by hydraulic transmission. way to simplify the control process.

The present invention achieves the above-mentioned technical purpose through the following technical means.

The expansion and contraction mechanism of the flying shear line unwinding machine includes a frame, a motor, a main shaft transmission system fixed on the frame, and a reel device; the main shaft transmission system includes a gear box, a main shaft, and rolling bearings fixed on the frame. The main shaft is assembled in the rolling bearing, one end of the main shaft is connected with the gear box, the gear box is connected with the motor through a coupling, the other end of the main shaft is fixed on the main shaft supporting frame, and an external thread is provided on the main shaft; The barrel device includes a brake disc, a cylinder, a pressure plate, multiple arc plates, and multiple moving blocks. The brake disc and the cylinder are connected to each other and nested on the main shaft, and the multiple arc plates are evenly distributed around the main shaft, and Constrained by the expansion rubber ring, the cylindrical part is connected with the arc plate; the moving block is a tapered block, and a plurality of moving blocks are respectively arranged between a plurality of arc plates and the main shaft, and the inner side of the arc plate has a T-shaped concave The side of the moving block in contact with the arc plate has a T-shaped boss matching the T-shaped groove, and the side of the moving block in contact with the main shaft is provided with a thread that matches the external thread on the main shaft.

Preferably, the motor, the main shaft drive system and the reel device are all fixed on the frame by bolts and welded rib brackets.

Preferably, the number of the arc plates is 4, and the number of the moving blocks is an integer multiple of 4.

Preferably, the end of the cylindrical member in contact with the arc plate has a cross-shaped boss, the end of the arc plate in contact with the cylindrical member has a cross-shaped groove, and the cross-shaped boss of the cylindrical member is nested in the arc plate. In the cruciform groove, the crisscross boss is restricted by a pressing plate fixed on the arc plate.

The expansion and contraction mechanism of the flying shear line unwinding machine described in the present invention is different from the principle of the traditional hydraulic cylinder transmission to control the expansion and contraction of the main shaft. The motor replaces the hydraulic cylinder as the power source for the expansion and contraction of the reel. Cooperate, when the main shaft rotates under the drive of the motor, the moving block moves along the thread, so as to realize the expansion of the reel, which saves the complicated structure of the hydraulic part, the structure is simple, the assembly is easy, the control accuracy remains unchanged, and the rotation of the motor can be controlled The speed and direction realize the expansion and contraction of the reel, which reduces the cost.

Description of drawings

Fig. 1 is a structural schematic diagram of the expansion and contraction mechanism of the flying shear line unwinding machine of the present invention.

FIG. 2 is a partial enlarged view of A in FIG. 1 .

FIG. 3 is a cross-sectional view along direction B in FIG. 1 .

Fig. 4 is an enlarged view of point C in Fig. 1 .

The reference signs are explained as follows:

1-frame, 2-motor, 3-gearbox, 4-brake disc, 5-bearing, 6-pressure plate, 7-cylinder, 8-moving block, 9-arc plate, 10-spindle support frame, 11 - spindle.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

As shown in Figure 1, the expansion and contraction mechanism of the flying shear line unwinding machine according to the present invention includes a frame 1, a motor 2, a main shaft drive system and a reel device. The motor 2, the main shaft drive system and the reel device are all fixed on the frame 1 by bolts and welded rib support.

The main shaft transmission system includes a gear box 3, a main shaft 11, and a rolling bearing 5 fixed on the frame 1. The main shaft 11 is assembled in the rolling bearing 5, and one end of the main shaft 11 is connected with the gear box 3, and the gear box 3 is connected through a shaft coupling. Connected with the motor 2, the other end of the main shaft 11 is fixed on the main shaft supporting frame 10, and the main shaft 11 is provided with external threads.

The reel device includes a brake disc 4, a cylindrical part 7, a pressing plate 6, a plurality of arc plates 9, and a plurality of moving blocks 8, preferably, the number of the arc plates 9 is 4, and the moving block 8 The number of is an integer multiple of 4, for example, 8.

The brake disc 4 and the cylindrical member 7 are connected to each other and nested on the main shaft 11. The four arc plates 9 are evenly distributed around the main shaft 11 and constrained by the expansion rubber ring. The cylindrical member 7 is connected to the arc plate 9 .

As shown in Figure 2 and Figure 3, the moving block 8 is a tapered block, and the eight moving blocks 8 are respectively arranged between the four arc plates 9 and the main shaft 11, and the inner side of the arc plate 9 has a T-shaped groove, The side of the moving block 8 in contact with the arc plate 9 has a T-shaped boss that matches the T-shaped groove, and the side of the moving block 8 that is in contact with the main shaft 11 is provided with an external thread that matches the main shaft 11. of thread.

Specifically, the connection method between the cylindrical member 7 and the arc plate 9 is shown in FIG. One end has a cross-shaped groove, and the cross-shaped boss of the cylindrical member 7 is nested in the cross-shaped groove on the arc plate 9, and the cross-shaped boss is limited by the pressure plate 6 fixed on the arc plate 9.

When working, the motor 2 runs first, drives the gears inside the gearbox 3 to work, and generates a large enough output torque to drive the main shaft 11 to rotate. Taking the expansion of the reel as an example, before the motor 2 runs, the brake disc 4 is in the braking state, and the cylindrical part 77 connected to it also remains motionless, and correspondingly nested on the cross-shaped boss at the bottom of the cylindrical part 7 The pressing plate 6 and the arc plate 9 cannot rotate, but the arc plate 9 can move up and down along the cross-shaped boss, that is, move radially relative to the main shaft 11 . At this time, power is supplied to make the motor 2 run, and the main shaft 11 obtains a large enough output torque to rotate, and the moving block 8 is in threaded contact with the main shaft 11. The rotation of the main shaft 11 can drive the moving block 8 to translate in the axial direction. 8 When translating from left to right in Figure 1, the arc plate 9 is lifted by the moving block 8, and the four arc plates 9 arranged along the circumference of the main shaft 11 are all lifted by the four moving blocks 8, so that the diameter of the drum increases. Large, suitable for placing sheet metal rolls with larger diameters.

The main shaft 11 rotates oppositely to the above-mentioned process to realize the reduction of the diameter of the reel, so as to be used for placing metal sheet coils with smaller diameters.

After the diameter adjustment of the reel is completed, place the sheet metal reel, control the release of the brake disc 4, and make the main shaft 11 and the reel device rotate according to different needs to release the sheet metal for subsequent leveling machines, flying shears and shears And other processing use.

The described embodiment is a preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make Modifications all belong to the protection scope of the present invention.

Claims (4)

1. the expansion mechanism of flying shear line unreeling machine, comprises frame (1), motor (2), is fixed on main axis transmission system and roll device in frame (1); It is characterized in that, described main axis transmission system comprises gear-box (3), main shaft (11), is fixed on the rolling bearing (5) in frame (1), described main shaft (11) is assemblied in rolling bearing (5), one end of main shaft (11) is connected with gear-box (3), gear-box (3) is connected with motor (2) by shaft coupling, it is upper that the other end of main shaft (11) is fixed on main shaft support frame (10), and described main shaft (11) is provided with external screw thread; Described roll device comprises brake disc (4), cylindrical element (7), pressing plate (6), a plurality of arc plate (9), a plurality of movable block (8), described brake disc (4), cylindrical element (7) interconnect and are nested on main shaft (11), a plurality of arc plates (9) are uniformly distributed in main shaft (11) and around and by expanded rubber circle retrain, and described cylindrical element (7) is connected with arc plate (9); Described movable block (8) is tapered block, a plurality of movable blocks (8) are separately positioned between a plurality of arc plates (9) and main shaft (11), the inner side of described arc plate (9) has T-shaped groove, the side that described movable block (8) contacts with arc plate (9) has the T-shaped boss with described T-shaped groove fit, and the one side that described movable block (8) contacts with main shaft (11) is provided with the screw thread matching with external screw thread on main shaft (11).

2. expansion mechanism according to claim 1, is characterized in that, described motor (2), main axis transmission system and roll device are all fixed in frame (1) by bolt and welding gusset support.

3. expansion mechanism according to claim 1, is characterized in that, the number of described arc plate (9) is 4, the integral multiple that the number of described movable block (8) is 4.

4. according to the expansion mechanism described in claim 1 or 3, it is characterized in that, described cylindrical element (7) has cruciate flower boss with one end that arc plate (9) contacts, arc plate (9) has cruciate flower groove with one end that cylindrical element (7) contacts, the cruciate flower boss of cylindrical element (7) is nested in the cruciate flower groove on arc plate (9), and described cruciate flower boss is by pressing plate (6) restriction being fixed on arc plate (9).