CN105415729A - End cover riveting machine - Google Patents

Abstract

The invention relates to the field of servo motor assembling and processing equipment, and particularly discloses an end cover riveting press which comprises a servo motor, a lifting mechanism, an upper die and a lower die, wherein the servo motor drives the lifting mechanism to drive the upper die to lift, and in the process of descending of the upper die, an end cover placed on the lower die is riveted. Compared with the prior art, servo motor passes through the elevating movement of drive hoist mechanism drive mould in this application, at last mould decline in-process, carry out the riveting to the end cover of placing on the lower mould, realize the automatic crimping of end cover and stator, the accurate control of manual accent mould, improve product quality, and simultaneously, reduce bearing noise incidence, the mechanism operation is stable, effectively avoid the end cover riveting machine of current cylinder formula or hydro-cylinder formula because the cylinder body drops the potential safety hazard that the departure caused, the high safety and usability.

Description

An end cap riveting machine

technical field

The invention relates to the field of motor assembly and processing equipment, in particular to an end cover riveting press.

Background technique

At present, in the crimping operation of the stator end cover of the motor, an oil press or an air press is generally used for the end cover crimping. Among them, the hydraulic press is a kind of hydraulic press that circulates the hydraulic oil in the oil tank through the check valve to make the oil cylinder/piston circulate and do work, so as to complete certain mechanical actions as a productive force. The hydraulic press uses special hydraulic oil as the working medium and the hydraulic pump as the power source. The force of the pump makes the hydraulic oil enter the cylinder/piston through the hydraulic pipeline. Under the action of high-pressure oil, the cylinder moves to complete the pressing process. device of. Pneumatic press is also called pneumatic stamping machine. It uses the high-pressure gas generated by the compressor to deliver the compressed gas to the solenoid valve through the pipeline, and controls the operation and return of the cylinder through the foot switch to control the action of the solenoid valve, so as to achieve pressing. the goal of.

But above-mentioned oil press and air press have oil pressure, air pressure in the process of pressing end cover and cause unstable product quality, and the cylinder body of air press and oil press is easy to come off and fly out, causes certain potential safety hazard; Meanwhile, in manual During the mold adjustment process, the pressing origin is not easy to control, and phenomena such as undervoltage, overvoltage or poor concentricity occur, resulting in the problem of high bearing noise.

In view of the above problems, we need an end cap riveting machine to solve the problem of unstable product quality due to poor oil pressure and air pressure in the existing end cap riveting press, and the cylinder body of the air press and hydraulic machine is easy to fall off and fly out. It causes certain safety hazards, and the pressing origin is not easy to control during the manual mold adjustment process, and phenomena such as undervoltage, overvoltage or poor concentricity occur, resulting in the problem of high bearing noise.

Contents of the invention

The purpose of the present invention is to provide an end cover riveting press, which can realize automatic crimping of the end cover and the stator, precise control of manual mold adjustment, improvement of product quality, reduction of bearing noise incidence, stable mechanism operation, and effective avoidance of existing end caps. The safety hazard caused by the falling and flying of the cylinder body of the cover riveting press improves the safety and usability.

For reaching this purpose, the present invention adopts following technical scheme:

An end cover riveting press machine, including a servo motor, a lifting mechanism, an upper mold and a lower mold, the servo motor drives the upper mold to lift through the driving lifting mechanism, and the end cover placed on the lower mold is riveted during the lowering process of the upper mold pressure.

As a preferred solution of an end cover riveting press, the lifting mechanism is a ball screw mechanism, and the ball screw mechanism includes a lead screw connected with a servo motor and a nut threaded with the lead screw, and the nut is connected with the upper die .

As a preferred solution of an end cover riveting press, the nut is connected to the upper die through a linkage mechanism;

The linkage mechanism includes a linkage rod, a nut fixing plate and an upper mold fixing plate, and the nut fixing plate and the upper mold fixing plate are respectively arranged at the upper and lower ends of the linkage rod;

The upper mold is fixedly connected with the upper mold fixing plate.

As a preferred solution of the end cover riveting press, it includes a guide positioning mechanism, the guide positioning mechanism includes a guide column, and the upper mold fixing plate is slidably sleeved on the guide column.

As a preferred solution of an end cap riveting machine, it includes a sensor and a controller electrically connected to the sensor, the sensor is used to detect the position of the nut fixing plate, and the controller controls the working state of the servo motor according to the position signal collected by the sensor.

As a preferred solution of the end cover riveting machine, the linkage mechanism includes a support plate, the support plate is fixedly connected with the guide column, and the linkage rod is passed through the support plate and can slide up and down relative to the support plate.

As a preferred solution of an end cap riveting machine, the sensor is arranged on a sensor bracket, and the sensor bracket is fixed on a support plate.

As a preferred solution of the end cover riveting press, the output shaft of the servo motor is connected to the lead screw through a coupling.

As a preferred solution of the end cover riveting press, positioning grooves are provided on the lower mold for positioning the end cover.

As a preferred solution of the end cover riveting press, the upper die is provided with a bearing for pressing in the riveting buckle.

The beneficial effects of the present invention are:

Compared with the prior art, the present invention uses a servo motor to drive the lifting movement of the upper mold by driving the lifting mechanism. During the lowering process of the upper mold, the end cover placed on the lower mold is riveted to realize the automatic pressing of the end cover and the stator. Connection, precise control of manual mold adjustment, improve product quality, and at the same time, reduce the occurrence of bearing noise, the mechanism runs stably, and effectively avoid the safety hazards caused by the cylinder body falling off and flying out of the existing cylinder type or oil cylinder type end cover riveting press. Improve security usability.

Description of drawings

Fig. 1 is a schematic structural view of an end cap riveting press provided in a specific embodiment of the present invention;

Fig. 2 is the perspective view of the upper mold that the specific embodiment of the present invention provides;

Fig. 3 is the top view of the upper mold that the specific embodiment of the present invention provides;

Fig. 4 is a sectional view along A-A in Fig. 3 .

in:

1: Servo motor; 2: Upper mold; 3: Lower mold; 4: Lead screw; 5: Nut; 6: Linkage rod; 7: Nut fixing plate; 8: Upper mold fixing plate; 9: Guide column; 10: Sensor; 11: Bearing; 12: Support plate; 13: Sensor bracket; 14: Coupling; 15: Positioning slot; 16: Slider; 17: Servo motor fixing plate; 18: Bottom plate; Spring; 21: adjust the top mold.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

Fig. 1 is a schematic structural view of an end cover riveting machine provided by a specific embodiment of the present invention. As shown in Figure 1, this embodiment proposes an end cap riveting press, which includes a servo motor 1, a lifting mechanism, an upper mold 2 and a lower mold 3, and the servo motor 1 drives the upper mold 2 to lift by driving the lifting mechanism. During the descending process of the upper die 2, the end cap placed on the lower die 3 is riveted. Wherein, the servo motor 1 is installed on the servo motor fixing plate 17, the lower mold 3 is installed on the bottom plate 18, and the lower mold 3 is provided with a positioning groove 15 for the positioning of the end cap.

In this embodiment, the lifting mechanism is preferably a ball screw mechanism. The ball screw mechanism includes a lead screw 4 connected to the servo motor 1 and a nut 5 screwed to the lead screw 4. The output shaft of the servo motor 1 passes through a shaft coupling. 14 is connected with leading screw 4, and nut 5 is connected with patrix 2. The lifting mechanism can also be other mechanisms such as a worm gear mechanism, a crank linkage mechanism, a rack and pinion mechanism, etc., and it only needs to be able to realize lifting linear motion.

The nut 5 is connected with the upper die 2 through a linkage mechanism. Wherein, the linkage mechanism includes a linkage rod 6, a nut fixing plate 7, an upper mold fixing plate 8 and a support plate 12, the upper mold 2 is fixedly connected with the upper mold fixing plate 8, and the nut fixing plate 7 and the upper mold fixing plate 8 are respectively arranged on The upper and lower ends of the linkage rod 6, the linkage rod 6 is set on the support plate 12, and can slide up and down relative to the support plate 12, the support plate 12 is fixedly connected with the guide column 9 of the following guide positioning mechanism.

In this embodiment, the end cover riveting machine also includes a guiding and positioning mechanism. Specifically, the guiding and positioning mechanism is the guiding column 9 in the figure, and the upper mold fixing plate 8 is slidably sleeved on the guiding column 9 . The upper end of the guide column 9 is fixedly connected with the servo motor fixing plate 17 , and its lower end is fixedly connected with the base plate 18 .

In this embodiment, the end cap riveting machine further includes a sensor 10 and a controller electrically connected to the sensor 10, the sensor 10 is used to detect the position of the nut fixing plate 7, and the controller controls the servo motor 1 according to the position signal collected by the sensor 10 working status. The sensor 10 is a proximity sensor, such as a sensing device such as an infrared sensor, and it only needs to be able to detect the position of the nut fixing plate 7 . The sensor 10 is arranged on the sensor bracket 13 , and the sensor bracket 13 is fixed on the support plate 12 .

As shown in Figures 2 to 4, the upper die 2 is provided with two bearings 11 for riveting and pressing in. The bearings 11 are two eccentric wheel bearings arranged on the upper die 2, and the tooling can be pressed once to realize two bearings. The rivet buckle is pressed in in one direction, and there is no need to set up other auxiliary pressing mechanisms on the side.

The specific working process of the end cap riveting machine is as follows:

First, the servo motor 1 drives the lead screw 4 to rotate, the nut 5 drives the nut fixing plate 7 to move up and down, the nut fixing plate 7 drives the support plate 12 to move up and down, and the support plate 12 drives the upper mold fixing plate 8 to move up and down. The mold fixing plate 8 further drives the upper mold 2 installed on it to move up and down; when the user operates, the servo motor to be riveted is placed in the positioning groove 15 of the lower mold 3, and the start button is activated, and the upper mold 2 passes through the above-mentioned The lifting mechanism and the linkage mechanism are pressed down to a certain height according to the above-mentioned motion state and then closed with the lower mold 3 to complete the riveting of the end cover of the servo motor. After that, the upper mold 2 is reset to the original position, and the user takes out the pressed servo motor and puts it into the next servo motor for riveting, and the cycle is repeated in turn. Compared with the existing end cap pressing method, the use of the end cap riveting machine can save 2-4 seconds of production time for each end cap riveted, greatly improving production efficiency and improving product quality.

Specifically, when the servo motor 1 drives the upper die 2 to press in, the two bearings 11 on the upper die 2 first contact the end cover of the servo motor, and as the upper die 2 continues to be pressed in, the two bearings 11 align with the end cap The two buckles on the cover are continuously pressed in, and the two buckles protruding outward on the end cover are pressed into the groove of the injection molded stator; when the guide ring 19 on the upper mold 2 touches the end cover, the upper mold 2 stops falling, but The end cover riveting machine continues to move downwards, at this time, the spring 20 in the upper mold 2 is compressed, so that the adjustable top mold 21 continues to descend, and the adjusted top mold 21 expands the four sliders 16, so that the riveting point of the slider 16 shape Riveted into the groove of the end cover, at this time, the end cover riveting press moves down to the position, and then resets after holding the pressure for 1S, the action is completed, and the cycle is sequential.

The above describes the technical principles of the present invention in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention, and cannot be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation modes of the present invention without creative work, and these modes will all fall within the protection scope of the present invention.

Claims (10)

1. A kind of end cap riveting machine, it is characterized in that, comprise servomotor (1), hoisting mechanism, patrix (2) and lower mold (3), servomotor (1) drives patrix (2) by driving hoisting mechanism ) is lifted, and the end cap placed on the lower die (3) is riveted during the descending process of the upper die (2). 2. The end cap riveting machine according to claim 1, characterized in that, the lifting mechanism is a ball screw mechanism, and the ball screw mechanism includes a screw (4) connected to a servo motor (1) and a A nut (5) threaded with the leading screw (4), the nut (5) is connected with the upper die (2). 3. The end cap riveting press according to claim 2, characterized in that, the nut (5) is connected to the upper die (2) through a linkage mechanism; Described linkage mechanism comprises linkage rod (6), nut fixed plate (7) and upper mold fixed plate (8), and described nut fixed plate (7) and upper mold fixed plate (8) are respectively arranged on linkage rod ( 6) Upper and lower ends; The upper mold (2) is fixedly connected with the upper mold fixing plate (8). 4. The end cap riveting machine according to claim 3, characterized in that it includes a guide positioning mechanism, the guide positioning mechanism includes a guide column (9), and the upper die fixing plate (8) is slidably sleeved on the guide post (9). 5. The end cap riveting machine according to claim 4, characterized in that it comprises a sensor (10) and a controller electrically connected to the sensor (10), the sensor (10) is used to detect the nut fixing plate (7) ), the controller controls the working state of the servo motor (1) according to the position signal collected by the sensor (10). 6. The end cover riveting press according to claim 5, characterized in that, the linkage mechanism includes a support plate (12), the support plate (12) is fixedly connected with the guide column (9), and the linkage rod ( 6) It is installed on the support plate (12), and can slide up and down relative to the support plate (12). 7. The end cap riveting machine according to claim 6, characterized in that, the sensor (10) is arranged on a sensor bracket (13), and the sensor bracket (13) is fixed on a support plate (12). 8. The end cap riveting machine according to any one of claims 2 to 7, characterized in that the output shaft of the servo motor (1) is connected to the lead screw (4) through a coupling (14). 9. The end cap riveting machine according to any one of claims 1 to 7, characterized in that a positioning groove (15) is provided on the lower die (3) for positioning the end cap. 10. The end cap riveting machine according to any one of claims 1 to 7, characterized in that, the upper mold (2) is provided with a bearing (11) for pressing in the riveting buckle.