CN201168819Y - Shear blade movement drive mechanism - Google Patents

Abstract

The utility model discloses a driving mechanism for the blade movement of a shearer, comprising an upper tool post for fixing an upper blade, connecting rods, eccentric sleeves and a lower tool post for fixing a lower blade, wherein, the connecting rods and the eccentric sleeves are respectively connected at both sides of the upper tool post with same structures and symmetrical positions; the upper end of the connecting rod is hinged on one end of a connecting plate, and the other end of the connecting plate is hinged on the upper tool post, the two sides of the upper tool post are respectively embedded into slideways arranged at the upper part of the two sides of a machine frame in the sliding way; the lower end of the connecting rod is hinged on the eccentric sleeve, the eccentric sleeves at the two sides of the upper tool frame are simultaneously connected with the same transmission shaft at the two sides of a decelerating machine, the input shaft of the decelerating machine is connected with a brake motor. The driving mechanism has the advantages that the structure is simple, the two sides of the upper tool post are respectively provided with the connecting rods and the eccentric sleeves which can drive the upper post, and thus, the work of the upper tool post is stable, high efficient and reliable; the driving mechanism has no clutch structure and can save energy.

Description

Shear blade movement drive mechanism

technical field

The utility model relates to a steel mesh shearing machine, in particular to a blade moving driving mechanism of the shearing machine.

Background technique

At present, the steel mesh welding production line in the prior art needs to be equipped with a steel mesh shearing machine, and a driving mechanism for moving the blade up and down is arranged on the steel mesh shearing machine. The sleeve and the connecting rod are connected on one side of the transmission shaft, and the clutch and the flywheel of the empty sleeve are fixed on the other side of the transmission shaft, and the flywheel is connected with the motor reducer through a transmission chain. Normally, the motor reducer drives the flywheel to rotate continuously. When the steel mesh needs to be sheared after a period of welding, the clutch contacts the idling flywheel through the friction plate, and then drives the transmission shaft to rotate. The rotation of the transmission shaft drives the eccentric sleeve and the coupling. The rod rotates, and the eccentric shaft drives the blade to perform the shearing motion of the next cycle to complete the shearing of the steel mesh.

There are following disadvantages in the moving blade driving mechanism on the steel mesh shearing machine of the above-mentioned prior art:

1. The long-term continuous operation of the motor loses no-load power;

2. The friction plate of the friction clutch is easy to wear and inconvenient to replace;

3. The clutch is easy to slip and stuffy, which affects the shearing efficiency.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the above-mentioned technologies, and provide a blade moving drive mechanism of a shearing machine in which a motor reducer with a brake directly drives an upper blade eccentric sleeve and a connecting rod to move up and down.

The technical solution for solving the above-mentioned technical problems is: a blade movement driving mechanism of a shearing machine, the structure of which includes: an upper blade holder for fixing the upper blade, connecting rods and eccentric sleeves connected to both sides of the upper blade holder and having the same structure and symmetry, The lower knife rest of the lower blade is fixed, the upper end of the connecting rod is hinged on one end of the connecting plate, the other end of the connecting plate is hinged on the upper knife rest, and the two sides of the upper knife rest are respectively slidingly embedded in the upper parts of the two sides of the frame. In the slideway; the lower end of the connecting rod is hinged on the eccentric sleeve, and the eccentric sleeves located on both sides of the upper tool holder are connected to the same drive shaft on both sides of the reducer at the same time, and the input shaft of the reducer is connected to the motor with brake .

The beneficial effects of the utility model are: the utility model has a simple structure, and both sides of the upper knife rest are equipped with connecting rods and eccentric sleeves that drive the upper knife rest to move, so that the upper knife rest works stably, efficiently and reliably. The utility model has no clutch structure, simple structure and energy saving.

Description of drawings

Fig. 1 is the front view of the utility model with a partial section;

Fig. 2 is A-A sectional view among Fig. 1:

Fig. 3 is a B-B sectional view in Fig. 1 .

"Explanation of the main serial numbers in the drawings"

1: Electric motor 2: Large pulley 3: Reducer 4: Transmission shaft 5: Eccentric sleeve

6: Rack 7: Upper Tool Holder 8: Upper Blade 9: Lower Blade 10: Lower Tool Holder

11: Connecting rod 12: Connecting plate 13: Slideway 14: Input shaft 15: Belt

16: Small pulley 17: Pin shaft

Detailed ways

Embodiments of the utility model are described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a front view of the utility model; Fig. 2 is a sectional view of A-A in Fig. 1; Fig. 3 is a sectional view of B-B in Fig. 1 .

As shown in Figure 1, the utility model provides a blade moving drive mechanism of a shearing machine, the structure of which includes: an upper knife rest 7 for fixing the upper blade 8, and connecting rods connected to both sides of the upper knife rest 7 with the same structure and symmetry 11 and eccentric sleeve 5, the lower knife rest 10 of fixing lower blade 9.

The upper end of the connecting rod 11 is hinged on one end of the connecting plate 12, and the other end of the connecting plate 12 is hinged on the upper knife rest 7, and the two sides of the upper knife rest 7 slide respectively and are embedded in the slideways on the upper parts of the two sides of the frame 6. within 13.

The lower end of the connecting rod 11 is hinged on the eccentric sleeve 5, and the eccentric sleeves 5 located on both sides of the upper tool rest 7 are connected to the same transmission shaft 4 on both sides of the reducer 3 at the same time, and the input shaft 14 of the reducer 3 is connected to Motor 1 with brake.

The structure of the motor 1 with brake is: the brake 1-1 that can brake the motor 1 and stop its rotation rapidly is equipped with at the tail of the motor 1. When the control part of the equipment receives the motor stop command, the motor 1 is powered off, and the brake 1-1 can quickly brake the rotation of the motor 1, so that the upper knife rest 7 and the blade 8 stop at the top dead center position immediately.

The structure that the input shaft 14 of the speed reducer 3 is connected to the motor 1 is: the input shaft 14 of the speed reducer 3 connects the large pulley 2; the output shaft of the motor 1 is equipped with a small pulley 16, and the transmission belt 15 is connected between the small pulley 16 and the large pulley 2, to realize the operation of the reducer 3.

The working process of the present utility model is described below.

When the utility model needs cutting, the motor 1 is started to rotate, and the transmission belt 15 transmits the power of the motor 1 to the input shaft 14 of the reducer 3, thereby driving the transmission shaft 4 of the reducer 3 to rotate. The eccentric sleeve 5 positioned at both sides of the upper knife rest 7 rotates thereupon, and also drives the upper knife rest 7 and the upper blade 8 connected thereto to move vertically downward to implement cutting. Then the upper knife rest 7 and the upper blade 8 pass through the bottom dead center and return upward to the vicinity of the top dead center, the motor 1 stops working, and the upper knife rest 7 and the upper blade 8 stop at the upper dead center position, thus completing a shearing cycle .

Claims (3)

1. A blade moving drive mechanism of a shearing machine, its structure comprising: an upper knife rest (7) that fixes the upper blade (8), a connecting rod (11) that is connected to both sides of the upper knife rest (7) with the same structure and symmetry ) and eccentric sleeve (5), the lower blade rest (10) for fixing the lower blade (9), it is characterized in that the upper end of the connecting rod (11) is hinged on one end of the connecting plate (12), and the connecting plate (12) is another One end is hinged on the upper knife rest (7), and the two sides of the upper knife rest (7) are respectively slidably embedded in the slideways (13) on both sides of the frame (6); the connecting rod (11) The lower end of the lower end is hinged on the eccentric sleeve (5), and the eccentric sleeves (5) located on both sides of the upper tool rest (7) are simultaneously connected to the same drive shaft (4) on both sides of the reducer (3), and the reducer ( 3) The input shaft (14) is connected with the motor (1) with brake. 2. According to the blade moving drive mechanism of the shearing machine described in claim 1, it is characterized in that, the structure of the motor (1) with brake is: the motor (1) tail is equipped with a motor that can brake quickly (1) A brake (1-1) that stops its rotation. 3. The blade moving drive mechanism of the shearing machine according to claim 1, characterized in that, the structure of the input shaft (14) of the speed reducer (3) connected to the motor (1) is: speed reducer (3) The input shaft (14) connects large belt pulley (2); Small belt pulley (16) is housed on the output shaft of motor (1), and transmission belt (15) is connected between small belt pulley (16) and large belt pulley (2).

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