CN103991230B - Adopt the driven type double-station punching machine of brace and connecting rod framework - Google Patents

Abstract

The invention discloses a transmission type double-station stamping machine adopting a crank connecting rod structure, which includes a machine tool and two stamping stations, and is characterized in that a motor is arranged on the machine tool, and the output shaft of the motor is coaxial A screw is connected, and a nut is threaded on the screw, and two racks are fixedly connected to the nut along the length direction of the screw. A gear meshed with the rack; two stamping stations are symmetrically arranged on both sides of the screw with the screw as a symmetrical axis, and each stamping station is provided with a chute, and the slide A punch slider is movably arranged in the slot, each of the punch sliders is connected at the eccentric position of the gear through a hinge rod, and the hinge rod is hinged with the gear and the punch slider. pole. The present invention adopts double-station simultaneous stamping, greatly improves production efficiency, has low center of gravity, good stability, no pollution, and large output force.

Description

Transmission type double station punching machine with crank connecting rod structure

technical field

The invention belongs to the field of machinery, and relates to a transmission type double-station stamping machine adopting a crank connecting rod structure, in particular to a horizontal numerically controlled double-station stamping machine.

Background technique

At present, the traditional mechanical stamping machines are all vertical. On a vertical stamping machine, it is difficult to realize double-station stamping or multi-station stamping, and a CNC workbench is often required; the double-station vertical stamping with a CNC workbench is more complicated in structure, and the rigidity of the workbench Poor; in addition, the cost of the whole system is relatively high. Modern manufacturing, especially the manufacture of electronic appliances, communications and other products, has an increasingly urgent demand for high-efficiency, low-power automatic stamping machines, and traditional mechanical stamping machines are obviously unable to meet this demand. In addition, in the machinery manufacturing industry, hydraulic transmission technology and pneumatic transmission technology are widely used in stamping machines. The output force of the hydraulic transmission is large, but the transmission efficiency is low, and the hydraulic transmission uses hydraulic oil as the working medium, and the oil will volatilize and leak, which will cause great pollution to the environment. Pneumatic transmission is stable in action, low in cost, and uses non-polluted air as the working medium, which will not pollute the environment. However, the disadvantage of pneumatic transmission is that the working pressure is relatively low, generally about 0.5Mpa. In some occasions where a large output force is required, the volume and cost of the device will increase.

Contents of the invention

In order to solve the above problems, the present invention provides a transmission type double station punching machine with a crank connecting rod structure, which does not require an air compressor or a hydraulic pump, has a simple overall device structure, a large output force, and no environmental pollution.

The technical solution of the present invention is to provide a transmission-type double-station stamping machine adopting a crank-connecting rod structure, which includes a machine tool and two stamping stations, and is characterized in that a motor is arranged on the machine tool, and the output of the motor The shafts are coaxially connected with a lead screw, and a nut is threaded on the lead screw, and two racks are fixedly connected to the nut along the length direction of the lead screw. two gears respectively meshing with one of the racks; the two stamping stations are symmetrically arranged on both sides of the screw with the screw as a symmetrical axis, and each of the stamping stations is provided with a chute, A punch slider is movably arranged in the chute, each of the punch sliders is connected at the eccentric position of the gear through a hinge rod, and the hinge rod is connected with the gear and the punch slider Both are hinged.

Preferably, the motor is a servo motor.

Preferably, the machine tool has a horizontal symmetrical layout.

Preferably, the screw is a ball screw, balls are arranged between the nut and the screw, and a spiral raceway for the balls to roll is arranged on the screw.

The transmission type double station stamping machine adopting the crank connecting rod structure of the present invention has the following beneficial effects:

(1) The technical functions are relatively complete, and the mature screw and nut mechanism, rack and pinion mechanism, and hinge rod mechanism are used as the main components of the punching machine, which is more convenient for processing and manufacturing.

(2) The motor-lead screw-nut transmission technology has the advantages of stable operation, high transmission efficiency, large output force, and no pollution. Transmission technology and pneumatic transmission technology with small output force are in line with the trend and trend of green development.

(3) Only one set of motor-lead screw-nut transmission device is used to realize the work of two stations, the structure is more compact, the work efficiency is improved, and the cost is reduced.

(4) The crank-link mechanism in the device is a non-linear mechanism. When the transmission angle and pressure angle are large, the crank-link mechanism can be used as a stroke amplification mechanism. At this time, the output speed is large, and the speed of crossing the empty stroke is fast, saving time. When the transmission angle and pressure angle are small, it can be used as a force amplification mechanism. At this time, the output speed is small, but the output force is large. At this time, the output force of the stamping workpiece is also guaranteed.

(5) Since the machine tool adopts a horizontal layout, compared with the traditional vertical stamping machine tool, the center of gravity is low and the stability is good. In addition, on both sides of the machine tool, a stepping device for automatic feeding is installed, which can form a high-efficiency and automatic stamping machine tool.

(6) Double-station structure is adopted to balance the force and prolong the service life of the structure.

Description of drawings

Fig. 1 is a structural schematic diagram of the best embodiment of the transmission-type double-station stamping machine adopting the crank-connecting rod structure of the present invention.

detailed description

Specific embodiments of the present invention will be further described in detail below.

As shown in FIG. 1 , a transmission-type double-station stamping machine adopting a crank-connecting rod structure of the present invention includes a machine tool (not shown) and two stamping stations 1, 1'. Two of the stamping stations 1, 1' are arranged symmetrically. However, according to the design concept of the present invention, multiple stamping stations can be arranged on one side or multiple groups of symmetrically arranged stamping stations can be arranged. A motor 2 is arranged on the machine tool, the output shaft of the motor 2 is coaxially connected with a lead screw 3 , and a nut 4 is threaded on the lead screw 3 . In this embodiment, a double-sided rack is socketed on the nut 4 , that is, a sleeve structure, and racks 5 are arranged on both sides thereof. The machine tool is also provided with two gears 6, 6' which mesh with the rack 5 respectively, and the gears 6, 6' rotate around their own central axis under the drive of the rack 5; each stamping station 1, 1' is provided with a slide Groove 7, 7', chute 7, 7' are movably provided with punch sliders 8, 8', each punch slider 8, 8' is connected to the gear 6 through a hinge rod 9, 9' , 6' at the eccentric position, the hinge rods 9, 9' are hinged with the gears 6, 6' and the punch sliders 8, 8'.

Further, the driving device is a servo motor 2, and a general motor is also acceptable, but the servo motor 2 is convenient for precise control.

Further, the machine tool has a horizontal symmetrical layout.

Further, the lead screw 3 is a ball screw, a ball 9 is provided between the nut 4 and the lead screw 3 , and a spiral raceway (not shown) for the ball 9 to roll is provided on the lead screw 3 . This structure contributes to power output and reduces noise.

The working principle of the present invention is: when the motor 2 rotates in the reverse direction, the lead screw 3 is also driven to rotate in the reverse direction, and the balls 9 between the lead screw 3 and the nut 4 roll along the raceway in turn, thereby pushing the nut 4 to move upward. Linear motion, now the rack 5 also moves upwards, the rack 5 drives the left gear 6 to move clockwise, and the right gear 6' moves counterclockwise. The gears 6, 6' push the crank connecting rods 9, 9' on both sides to drive the left and right punch sliders 8, 8' to move outwards for stamping. After the workpiece is processed, make the motor 2 rotate in the forward direction, then the screw 3 rotates in the forward direction, the nut 4 drives the rack 5 to move downward in a straight line, and the rack 5 drives the left and right gears 6, 6' to move counterclockwise and clockwise respectively. Clockwise movement, through the crank connecting rod 9, 9' mechanism, the processed workpiece can be released.

The above embodiment is only one implementation mode of the present invention, and its description is relatively specific and detailed, but it should not be construed as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (6)

1. A transmission type double station stamping machine adopting a crank connecting rod structure, which comprises a machine tool and at least two stamping stations, is characterized in that: a motor is set on the machine tool, and the output shaft of the motor is coaxially connected A threaded screw, a nut is threaded on the screw, and at least one double-sided rack is fixedly connected to the nut along the length direction of the screw. The double-sided rack is a sleeve structure, and both sides of the rack are A rack is provided, and two gears are symmetrically arranged on the machine tool with the lead screw as the axis of symmetry respectively meshing with one of the double-sided racks; the two stamping stations are symmetrical with the lead screw as the axis of symmetry It is arranged on both sides of the lead screw, and each stamping station is provided with a chute, and a punch slider is movably arranged in the chute, and each punch slider passes through a hinge. The rod is connected at the eccentric position of the gear, and the hinge rod is hinged with the gear and the punch slider. 2. The transmission-type double-station punching machine adopting a crank-connecting rod structure according to claim 1, wherein the motor is a servo motor. 3. The transmission-type double-station punching machine adopting a crank-connecting rod structure according to claim 2, characterized in that: said machine tool has a horizontal symmetrical layout. 4. The transmission-type double-station punching machine adopting a crank-connecting rod structure according to claim 3, wherein the screw is a ball screw. 5. The transmission-type double-station punching machine adopting a crank-connecting rod structure according to claim 4, wherein a ball is arranged between the nut and the lead screw. 6. The transmission-type double-station punching machine adopting a crank-connecting rod structure according to claim 5, characterized in that: the screw is provided with a spiral raceway for the rolling of the balls.