Fast and energy-saving automatic straightening and cutting machine

Abstract

The invention relates to a fast and energy-saving automatic straightening and cutting machine. The straightening and cutting machine is mainly used for automatic straightening and fixed-length cutting and cutting of steel bars and other wires used on construction sites. Its main structure is as follows: the motor passes through a The straightening cylinder is driven by one strand of the belt; the motor simultaneously drives the angled pulley, the rear axle angle gear, the disk gear, and the front feeding spindle through another belt; the front feeding spindle drives the feeding assembly and the traction assembly; the disk gear drives the shearing assembly . The advantage of the present invention is that the rear axle angular gear is used to directly decelerate the disc gear on the front feeding main shaft, and then the gear on the main shaft simultaneously drives the gear transmission structure in which the clutch gear rotates simultaneously with the upper pressing roller and the rear feeding roller, which can reduce the overall The machine has multi-section variable speed, multiple gears and shafts, and the structure is very simple. It only needs a 5.5KW motor to work, and it only needs about 6 kwh of electricity to straighten and cut a ton of wire and steel bars, which is particularly energy-saving.

Description

technical field [0001] The invention relates to an automatic straightening and cutting machine. In particular, it is a fast and energy-saving automatic straightening and cutting machine, which is mainly used for automatic straightening and fixed-length cutting of steel bars and other wires used on construction sites. Background technique [0002] In the previous patent application document "Automatic Wire Pulling Straightening and Shearing Equipment" declared by us, especially the combination of the patent application document figure 1 , it can be found that the specific details of how the motor 1 drives the straightening cylinder, the dynamic feeding assembly, the traction assembly, and the shearing assembly are not disclosed. [0003] At present, the CT4-12 and CT4-14 automatic wire straightening and cutting machines produced by our country's peer manufacturers generally have two control shearing methods, mechanical transmission gear shearing and oil pump hydraulic push s...

AI Technical Summary

Problems solved by technology

Adopting the control shearing structure of mechanical transmission must use multiple conjoined spur gears of different sizes and the method of multi-stage speed change to complete, especially the mobile saw gear 14 that controls the clutch shearing and the conjoined rotary wheel on the clutch shaft. The fast engagement of the fixed saw gear 13, and the separation and positioning hook device, due to the large diameter, heavy weight and fast shearing speed of the large gear of the shearing knife, the impact inertia force generated when cutting steel bars is particularly large, in actual use The control of the positioning hook often fails, resulting in continuous rotation of the large shearing gear, and the waste of non-stop cutting short steel bars. Normal use

In order to keep up with the market, it is necessary to solve the problem of fast shearing gear, large recoil inertial force, unstable mechanical performance, control positioning hook, contact wear and tear, and control failure. Many domestic manufacturers have successively Developed and produced the automatic straightening and cutting machine with oil pump hydraulic propulsion and shearing method. Due to the different transmission structure of the oil pump hydraulic shearing straightening machine, it is necessary to use 3 motors to work at the same time

①Straightening system: A 5.5KW motor directly drives the straightening cylinder to straighten the steel bars; ②A 3KW motor drives a special matching reduction box device to pull the feeding roller, and at the same time drive the wire and steel bars in the straightening cylinder to pull Send out; ③Use a 4KW motor to drive the shearing hydraulic oil pump. When the steel bar needs to be cut to a fixed length, the fixed-length stroke switch on the runway frame is connected to the electric control switch of the oil pump valve. Under the pressure of the driving rotation, it enters the oil cylinder through the high-pressure oil pipe, and pushes out the piston knife rod in the oil cylinder. The blade installed on the piston knife rod and the fixed blade on the movable knife holder are pushed sideways to cut off the steel bar in the raceway groove. The cutting speed is about 40 meters per minute. It takes about 15 degrees of electricity to straighten and cut 1 ton of wire rod steel. However, the working time of actual cutting, feeding and retracting, and returning takes about 1.5 seconds to complete each time, and the output length of the straight steel bar is adjusted to about 66 centimeters per second. In this way, a The cut-off steel bars with a length of about one meter cannot be completed, which adds a trouble of manual cutting to the user

2. The hydraulic oil in the fuel tank of the oil pump is affected by different regions and seasons at the same time. Especially in winter, the oil pump must be started in advance. After the temperature in the oil pump rises, the whole machine can be started and used normally, which brings some troubles and troubles to the user. inconvenient

3. Because the machine adopts hydraulic pressure, the structure of shearing traction and feeding is different, the whole machine needs 3 motors to work at the same time, resulting in high production cost and waste of electric energy

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