CN107801142A - Static gag bit location equipment in a kind of loudspeaker preparation technology - Google Patents

Abstract

The invention discloses a static armature positioning device in the speaker preparation process. During the speaker assembly process, after the static armature is sleeved in the center of the lower casing, it is placed upside down on the workpiece table as a whole. Due to the end plate of the lower casing It is disc-shaped and its edge is the diaphragm fixing surface, so it can be stably inverted on a horizontal workbench, and then the lower shell of the horn is clamped by clamping the workpiece. The distance sensor at the center of the housing facing the workbench starts to work to accurately detect the distance between the static armature and the workbench. The detection value of the distance sensor is sent to the PLC as the controller. After comparing with the standard value, the position of the static armature is adjusted through the hydraulic piston on the top of the workpiece until the detection value of the distance sensor matches the standard value. The adjustment is to apply pressure to the end of the static armature through the hydraulic piston to make it produce a slight vertical displacement. In order to accurately control the hydraulic piston rod, it must be controlled by a high-precision servo motor.

Description

A static armature positioning device in the horn preparation process

technical field

The invention relates to a static armature positioning device in a horn preparation process.

Background technique

In the prior art, most of the horns used in vehicles are basin-shaped horns or snail horns, which mainly consist of electromagnet coils, diaphragms, moving armatures, static armatures and other components. The sounding principle is basically to magnetize the static armature by controlling the electromagnet coil, the static armature attracts the moving armature to drive the diaphragm to vibrate, and the frequency vibration is generated by the sounding board to produce sound. In the equipment of vehicle horns, the basic steps are still done manually, which results in slight differences in the tone and sound quality of the finished horns. After research, it is found that one of the reasons for this problem is the difference between the moving armature and the static armature. The micron-level error between the actual equipment distance and the optimal distance will directly affect the final diaphragm vibration frequency, and the source of the error may be the processing error of the armature itself or the relevant housing itself.

Contents of the invention

Purpose of the invention: Aiming at the above-mentioned prior art, a static armature positioning device in the speaker manufacturing process is proposed, which can precisely locate the distance between the moving armature and the static armature during the equipment process.

Technical solution: A static armature positioning device in the horn preparation process, characterized in that it includes a workpiece table, a hydraulic piston suspended on the top of the workbench, a servo motor, a servo motor driver, and a PLC controller; the workbench is equipped with The horn housing clamps the workpiece, and the workbench is provided with a circular hole facing the center of the workpiece clamped by the horn housing, and a distance sensor is provided in the circular hole, and the distance sensor outputs a signal to the PLC controller, The piston end of the hydraulic piston faces the center of the horn housing to clamp the workpiece, the output of the servo motor is connected to the hydraulic piston, and the control end of the servo motor is connected to the PLC controller through the servo motor driver.

Further, the workbench has a circular structure, and several horn housings are evenly arranged along the circumference of the workbench to clamp workpieces. The workbench is provided with a horizontal rotation drive mechanism, and the drive mechanism is driven by a stepping motor.

Further, it is characterized in that: the distance sensor is a grating sensor.

Beneficial effects: the static armature positioning equipment in the speaker preparation process of the present invention, in the speaker assembly process, after the static armature is sleeved in the center of the lower casing, it is placed upside down on the workpiece table as a whole, due to the lower casing The end plate is disc-shaped and its edge is the diaphragm fixing surface, so it can be stably inverted on a horizontal workbench, and then clamp the lower shell of the horn by clamping the workpiece. At this time, the distance sensor at the center of the housing facing the worktable starts to work to accurately detect the distance between the static armature and the worktable. In order to improve its accuracy, the distance sensor is preferably a grating sensor. The detection value of the distance sensor is sent to the PLC as the controller. After comparing with the standard value, the position of the static armature is adjusted through the hydraulic piston on the top of the workpiece until the detection value of the distance sensor matches the standard value. The adjustment is to apply pressure to the end of the static armature through the hydraulic piston to make it produce a slight vertical displacement. In order to accurately control the hydraulic piston rod, it must be controlled by a high-precision servo motor.

In order to improve the efficiency of the whole process, two identical clamped workpieces are set on the worktable at the same time, and the overall rotation is controlled by a stepping motor, so as to quickly complete the position adjustment of the static armature of multiple workpieces.

Description of drawings

Fig. 1 is a structural schematic diagram of static armature positioning equipment in the horn preparation process;

specific embodiment

The present invention will be further explained below in conjunction with the accompanying drawings.

As shown in FIG. 1 , a static armature positioning device in the horn preparation process includes a workpiece table 1 , a hydraulic piston 2 suspended on the top of the worktable, a servo motor 3 , a servo motor driver 4 , and a PLC controller 5 . The workbench 1 has a circular structure, and several horn housings are evenly arranged along the circumference of the workbench to clamp the workpiece 11. The bottom of the workbench 1 is provided with a horizontal rotation drive mechanism 13, and the moving mechanism 13 is driven by a stepping motor.

The workbench 1 is provided with a circular hole 12 at the center of each horn housing to clamp the workpiece 11, and a distance sensor 12 is provided in the circular hole 12, and all distance sensors output signals to the PLC controller 5, which is selected in this embodiment. Grating type sensor. The piston end of the hydraulic piston 2 can clamp the center of the workpiece 11 against the horn housing, the output of the servo motor 3 is connected to the hydraulic piston 2, and the control end of the servo motor 3 is connected to the PLC controller 5 through the servo motor driver 4 .

In the horn equipping process, first assemble the static armature and the lower case, the cylindrical static armature passes through the round hole in the bottom center of the lower case, and the static armature fits the case with interference. After the static armature is sleeved in the center of the lower case, several such overall structures are placed upside down on each horn case clamping workpiece 11 on the workpiece platform. The clamping workpiece is adapted to the shape of the lower object and can be fixed manually or The lower housing is tightened by hydraulic equipment. The end plate of the lower housing is stably turned upside down on the horizontal workbench, and the distance sensor at the center of the housing facing the workbench starts to work to accurately detect the distance between the static armature and the workbench, and send the detected value to the controller as the controller. PLC. In the PLC, after comparing the detection value with the standard value, the control signal is output to the servo motor driver 4, and the servo motor driver 4 controls the servo motor to work; if the sensor detection distance is greater than the standard distance, the hydraulic piston rod pushes the end of the static armature to adjust the static The position of the armature until the detection value of the distance sensor matches the standard value; if the detection distance of the sensor is less than the standard distance, the PLC will issue a warning, prompting that the corresponding workpiece is not up to standard.

After the adjustment of a workpiece is completed, the stepper motor at the bottom of the workpiece table 1 drives the overall rotation of the workbench, and the workpiece 11 clamped by the next horn housing is rotated to the position facing the hydraulic piston 2, and the next detection adjustment is started. In this equipment, the adjustment is through the hydraulic piston exerting pressure on the end of the static armature to make it produce a slight vertical displacement, and the adjustment is only on the order of microns.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (3)

1. A kind of 1. static gag bit location equipment in loudspeaker preparation technology, it is characterised in that：Including work stage（1）, be suspended at workbench The hydraulic piston at top（2）, servomotor（3）, motor servo driver（4）, PLC（5）；The workbench（1）On Workpiece is clamped provided with loudspeaker housing（11）, the workbench（1）Face loudspeaker housing clamps workpiece（11）The position at center is provided with Circular hole, the circular hole is interior to be provided with range sensor（12）, the range sensor outputs signals to the PLC（5）, institute State hydraulic piston（2）Piston end face loudspeaker housing clamp workpiece（11）Center, the servomotor（3）Output connection The hydraulic piston（2）, servomotor（3）Control terminal pass through the motor servo driver（4）It is connected to the PLC controls Device（5）.
2. 2. static gag bit location equipment in a kind of loudspeaker preparation technology according to claim 1, it is characterised in that：The work Platform（1）For circular configuration, workbench even circumferential is provided with some loudspeaker housings and clamps workpiece（11）, the workbench （1）Provided with horizontal rotation drive mechanism（13）, the drive mechanism（13）Using driving stepper motor.
3. 3. static gag bit location equipment in a kind of loudspeaker preparation technology according to claim 1 or 2, it is characterised in that：It is described Range sensor（12）For grating type sensor.