阅读说明：本技术 一种机械液压混合驱动压力机系统 (Mechanical hydraulic hybrid drive press system ) 是由 朱灯林 李向国 于 2019-11-06 设计创作，主要内容包括：本发明公开了一种机械液压混合驱动压力机系统,包括液压驱动系统和机械增力机构。液压系统通过液压缸驱动活塞杆上下运动,活塞杆末端装有齿条,齿条带动两个齿轮转动,驱动两套多连杆机构左右摆动,多连杆下端与滑块连接,实现滑块沿导轨上下移动,完成冲压动作。本发明提供的压力机系统具有装机功率小、输出吨位大,高速冲压,节省成本等特点,满足冲压成形技术的特殊要求。(The invention discloses a mechanical hydraulic hybrid drive press system which comprises a hydraulic drive system and a mechanical force increasing mechanism. The hydraulic system drives the piston rod to move up and down through the hydraulic cylinder, the tail end of the piston rod is provided with the rack, the rack drives the two gears to rotate, the two sets of multi-link mechanisms are driven to swing left and right, the lower ends of the multi-links are connected with the sliding block, the sliding block moves up and down along the guide rail, and the stamping action is completed. The press machine system provided by the invention has the characteristics of small installed power, large output tonnage, high-speed stamping, cost saving and the like, and meets the special requirements of the stamping forming technology.)

1. The utility model provides a machinery hydraulic pressure hybrid drive press system which characterized in that: the hydraulic control system comprises an oil tank, a hydraulic pump, a reversing valve, a hydraulic cylinder, a piston rod, a rack, a gear A, a gear B, a connecting rod A, a connecting rod B and a motor;

the hydraulic cylinder is arranged on the pressure machine tool body, the hydraulic cylinder is connected with the reversing valve through an oil pipe, and the high-pressure oil pushes the piston rod to move up and down; the rack is arranged at the tail end of the piston rod, the two sides of the rack are provided with teeth and are respectively meshed with the gear A and the gear B at the same time, and the piston rod and the rack move to drive the gear A and the gear B to respectively rotate around the shaft A and the shaft B correspondingly; the gear A and the gear B are respectively provided with a hinge point A and a hinge point B in a one-to-one correspondence manner, and respectively correspond to the lower holes of the connecting rod A and the rod B in a one-to-one correspondence manner; the upper hole of the rod A and the upper hole of the rod C are hinged with the lower hole of the rod D at the same time, the upper hole of the rod C is hinged with the press bed, and the lower hole of the rod C is connected with the left end of the sliding block; the upper hole of the rod B and the upper hole of the rod E are hinged with the lower hole of the rod F at the same time, the upper hole of the rod F is hinged with the press bed, and the lower hole of the rod E is connected with the right end of the sliding block; the gears A and the gears B respectively rotate in a one-to-one correspondence mode to drive the hinge points A and the hinge points B to rotate around the centers of the gears, so that the connecting rods A and the connecting rods B are driven to swing left and right, the sliding blocks are driven to slide upwards along the guide rails, and the stamping process is completed.

2. The hybrid drive press according to claim 1, characterized in that: the motor is a common alternating current motor or a servo motor to realize the servo control function of the system.

3. The hybrid drive press according to claim 1, characterized in that: the hydraulic pump is a fixed displacement pump or a variable displacement pump.

4. The hybrid drive press according to claim 1, characterized in that: the system is provided with a hydraulic system and an oil cylinder to push a rack to reciprocate up and down, the rack drives two symmetrical gears to swing back and forth to rotate, the two gears rotate to drive a multi-link mechanism to move, and the multi-link mechanism drives a sliding block to move up and down.

5. The hybrid drive press according to claim 1, characterized in that: the two gears swing back and forth to rotate to drive the multi-link mechanism to move, and the two gears do not rotate in the whole circle.

Technical Field

The invention relates to the field of industrial automation, in particular to a mechanical hydraulic hybrid drive press system.

Background

The press machine is used as a processing device which is rapid in forming, simple in process and easy to design, and is widely applied to modern industrial production. The traditional mechanical press adopts a driving mode of a common motor and a flywheel and works by matching with mechanisms such as a crank, a connecting rod and the like. In the working process, the speed and the position of the motor cannot form feedback, real-time flexible speed regulation cannot be carried out, and the flywheel has huge inertia and is difficult to control, so that the motion curve of the traditional mechanical press cannot be freely adjusted, and the motion precision is limited.

The traditional oil press is a device which uses special hydraulic oil as a working medium, uses a hydraulic pump as a power source, and enables the hydraulic oil to circulate in an oil tank through a one-way valve, so that a cylinder piston is driven to do work circularly to complete certain mechanical action. For the production condition requiring large-tonnage pressure output, the oil press forming generally has the advantage of low cost, the design of the oil press is relatively simple, and the die can be saved in the production; however, in design, the hydraulic pumps are selected according to the maximum working speed and working pressure of the hydraulic press, and the hydraulic press needs smaller working pressure in the charging stroke, the return stroke and the auxiliary process, so that the hydraulic pumps cannot be fully utilized, and particularly the utilization factor of the large-tonnage hydraulic press is lower.

Compared with the traditional oil press and mechanical press, the servo press adopts a servo motor as a power source, the motor is rotated and converted into linear motion of the slide block through the speed reducing mechanism and the force increasing mechanism, free planning of a motion curve of the slide block can be realized, the process parameters can be optimized in real time, the servo press has stronger adaptability to variable process environments and process requirements, and meanwhile, the position detection device at the tail end of the servo motor can enable the whole stamping process to form position feedback, so that the servo press has higher motion precision. However, for a large-tonnage servo press, a high-power servo motor is required to be used for driving, which leads to a rapid increase of cost, so that the large-tonnage servo press can be replaced only by a multi-motor cooperative driving mode, but the technical difficulty is increased, and the control cost is increased. Therefore, the method for designing the transmission mechanism with high boosting ratio, adopting the hydraulic system to drive instead of directly driving the servo motor and the like to reduce the cost has great research value and application value.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a hybrid driving pressure machine system, a hydraulic system drives a piston rod to move up and down through a hydraulic cylinder, a rack is arranged at the tail end of the piston rod, the rack drives two gears to rotate, two connecting rods are driven to swing left and right, the lower ends of the connecting rods are connected with a sliding block, the sliding block moves up and down along a guide rail, and the stamping action is completed.

The technical scheme of the invention is as follows:

a mechanical hydraulic hybrid driving press system comprises an oil tank, a hydraulic pump, a reversing valve, a hydraulic cylinder, a piston rod, a rack, a gear A, a gear B, a connecting rod A, a connecting rod B and a motor.

The hydraulic cylinder is arranged on the pressure machine tool body, the hydraulic cylinder is connected with the reversing valve through an oil pipe, and the high-pressure oil pushes the piston rod to move up and down; the rack is arranged at the tail end of the piston rod, the two sides of the rack are provided with teeth and are respectively meshed with the gear A and the gear B at the same time, and the piston rod and the rack move to drive the gear A and the gear B to respectively rotate around the shaft A and the shaft B correspondingly; the gear A and the gear B are respectively provided with a hinge point A and a hinge point B in a one-to-one correspondence manner, and respectively correspond to the lower holes of the connecting rod A and the rod B in a one-to-one correspondence manner; the upper hole of the rod A and the upper hole of the rod C are hinged with the lower hole of the rod D at the same time, the upper hole of the rod C is hinged with the press bed, and the lower hole of the rod C is connected with the left end of the sliding block; the upper hole of the rod B and the upper hole of the rod E are hinged with the lower hole of the rod F at the same time, the upper hole of the rod F is hinged with the press bed, and the lower hole of the rod E is connected with the right end of the sliding block; the gears A and the gears B respectively rotate in a one-to-one correspondence mode to drive the hinge points A and the hinge points B to rotate around the centers of the gears, so that the connecting rods A and the connecting rods B are driven to swing left and right, the sliding blocks are driven to slide upwards along the guide rails, and the stamping process is completed.

The motor is a common alternating current motor or a servo motor to realize the servo control function of the system.

The hydraulic pump is a fixed displacement pump or a variable displacement pump.

The hydraulic system and the oil cylinder push the rack to reciprocate up and down, the rack drives the symmetrical gears to swing back and forth to rotate, the gears rotate to drive the multi-link mechanism to move, and the multi-link mechanism drives the sliding block to move up and down.

The gear swings back and forth to rotate to drive the multi-link mechanism to move, the gear does not rotate in the whole circle, and the symmetrical motion curve shown in figure 3 can be realized.

The hydraulic system has the advantages that the hydraulic system drives the piston rod to move up and down through the hydraulic cylinder, the tail end of the piston rod is provided with the rack, the rack drives the two gears to rotate, the two sets of multi-link mechanisms are driven to swing left and right, the lower ends of the multi-links are connected with the sliding block, the sliding block moves up and down along the guide rail, and the stamping action is completed. The press machine system provided by the invention has the characteristics of small installed power, large output tonnage, high-speed stamping, cost saving and the like, and meets the special requirements of the stamping forming technology.

Drawings

Fig. 1 is a general structural view of a hybrid drive press.

Fig. 2 is a schematic view of the motion curve of the mechanism.

Fig. 3 is a graph of gear symmetric motion.

In figure 1, 1-oil tank, 2-hydraulic pump, 3-reversing valve, 4-hydraulic cylinder, 5-piston rod, 6-rack, 7-lathe bed, gear A8, gear B14, 12-motor.

Detailed Description

Referring to fig. 1-2, a mechanical hydraulic hybrid drive press system comprises an oil tank 1, a hydraulic pump 2, a reversing valve 3, a hydraulic cylinder 4, a piston rod 5, a rack 6, a gear A8, a gear B14, a connecting rod A9, a connecting rod B13 and a motor 12.

The hydraulic cylinder 4 is arranged on the press machine body 7, the hydraulic cylinder 4 is connected with the reversing valve 3 through an oil pipe, and the high-pressure oil pushes the piston rod 5 to move up and down; the rack 6 is arranged at the tail end of the piston rod 5, double faces of the rack 6 are toothed, and are respectively meshed with the gear A8 and the gear B14 at the same time, and the movement of the piston rod 5 and the rack 6 drives the gear A8 and the gear B14 to rotate around the shaft A8-2 and the shaft B14-2; the gear A8 and the gear B14 are respectively provided with a hinge point A8-1 and a hinge point B14-1 in a one-to-one correspondence manner, and are respectively provided with lower holes of a connecting rod A9-3 and a rod B13-3 in a one-to-one correspondence manner; the upper hole of the rod A9-3 and the upper hole of the rod C9-1 are hinged with the lower hole of the rod D9-2 at the same time, the upper hole of the rod C9-2 is hinged with the press bed 7, and the lower hole of the rod C9-1 is connected with the left end of the slide block 10; the upper hole of the rod B13-3 and the upper hole of the rod E13-1 are hinged with the lower hole of the rod F13-2 at the same time, the upper hole of the rod F13-2 is hinged with the press bed 7, and the lower hole of the rod E13-1 is connected with the right end of the slide block 10; the gear A8 and the gear B14 respectively rotate correspondingly to drive the hinge point A8-1 and the hinge point B14-1 to rotate around the center of the gear, so that the connecting rod A9 and the connecting rod B13 are driven to swing left and right, the sliding block 10 is driven to slide upwards along the guide rail 11, and the stamping process is completed.

The motor is a common alternating current motor or a servo motor to realize the servo control function of the system.

The hydraulic pump is a fixed displacement pump or a variable displacement pump.

The hydraulic system and the oil cylinder push the rack to reciprocate up and down, the rack drives the symmetrical gears to swing back and forth to rotate, the gears rotate to drive the multi-link mechanism to move, and the multi-link mechanism drives the sliding block to move up and down.

The gear swings back and forth to rotate to drive the multi-link mechanism to move, the gear does not rotate in the whole circle, and the symmetrical motion curve shown in figure 3 can be realized.

The stamping working process of the press comprises the following steps: the system is electrified, the press machine is started, the motor 12 is electrified to rotate, the hydraulic pump 2 is driven to work, hydraulic oil is pumped out from the oil tank 1, a coil on the left side of the reversing valve 3 is electrified, high-pressure oil is pumped into an upper cavity of the hydraulic cylinder 4 through an oil pipe, the piston rod 5 and the rack 6 are pushed to move downwards, the rack 6 drives the gear A8 and the gear B14 to rotate around the shaft A8-2 and the shaft B14-2 respectively, the connecting rod A9 and the connecting rod B13 are driven to swing left and right through the hinge point A8-1 and the hinge point B14-1, the sliding block 10 is pushed to slide downwards along.

The return working process of the press machine is as follows: a coil on the right side of the reversing valve 3 is electrified, high-pressure oil is pumped into a lower cavity of the hydraulic cylinder 4 through an oil pipe to push the piston rod 5 and the rack 6 to move upwards, the rack 6 drives the gear A8 and the gear B14 to rotate around the shaft A8-2 and the shaft B14-2 respectively, the connecting rod A9 and the connecting rod B13 are driven to swing right and left through the hinge point A8-1 and the hinge point B14-1, the sliding block 10 is driven to slide upwards along the guide rail 11, and return stroke is completed.