SU682961A1 - Device for checking electrical parameters of capacitors - Google Patents

Description

one

The invention relates to process equipment for the production of radio components, in particular to measuring devices in the production of capacitors.

Devices for controlling electrical parameters of capacitors are known, comprising a transporting rotor with contact clamps in the form of two movable levers with dielectric barriers, a loading and unloading mechanism, a measuring unit connected to measuring heads 1.

A disadvantage of the known devices is the low productivity due to the loss of a significant part of the cycle time for switching the tested capacitors by turning the disk transport mechanism by an angle corresponding to the number of measuring heads on it.

Since the number of measuring heads on a disk conveying mechanism is determined by the number of parameters to be measured (short circuit, leakage current, loss tangent, capacitance), the number of preparatory operations that preceded the measurements (training to measure leakage current, discharge), the time required for preparatory operations, and the number of positioning of capacitors in groups (short-circuited, with a large leakage current, with a large loss tangent, low-capacity, high-capacity and normal noy capacity), the size and weight of the disk transfer mechanism are in direct relationship with productivity, as the size and weight limit the rate of periodic rotations of disk transfer mechanism that skazyvaets particularly in devices for measuring parameters of large capacitors.

It is also known a device for monitoring electrical parameters of capacitors, comprising a loading mechanism, transporting a disk with measuring heads of a connection mechanism electrically connected by means of contact brushes placed on a movable brush holder, with a switching unit located in the center of the transporting disk, a control unit with recording devices, an unloading mechanism and drive mechanism 2.

The device partially eliminates the drawbacks in increasing productivity due to the introduction of group control when measuring the parameters of capacitors, as well as due to the additional introduction

contact rings in the switching unit. The introduction of slip rings placed one above the other creates the bulkiness of the switching unit and also leads to an increase in the number of measuring circuits but the number of simultaneously measured capacitors. The intermittent rotation of the transporting disc with measuring heads limits its rotational speed and device capacity.

The disadvantages of this device also include the lack of technological capabilities in the implementation of preparatory operations, since the increase in the performance of the device causes an increase in the number of measuring heads on the transport disk, an increase in the size and mass of the transport disk, and this is a limitation of the speed with periodic rotation.

The aim of the invention is to improve the performance of the device.

To achieve this goal, in ycTpoiiciue to control the electrical parameters of capacitors, containing a transporting mechanism, a connection mechanism, equipped with measuring heads connected by spring-loaded contact brushes placed with a movable brush holder, a switching unit, a control unit, a loading and unloading mechanism and a drive mechanism the transport mechanism is made as a set of disks according to the type of operations performed, covered by an endless chain, and the connection mechanism is equipped with a brace, with a single spring with a brush holder, radially located sliders with grippers and rollers, and a copier with the possibility of interaction with the rollers of the sliders.

FIG. 1 schematically shows the proposed device; in fig. 2 shows a transporting disk with measuring heads (longitudinal section); in fig. 3 - transporting disk with measuring heads (radial section).

The device for monitoring the electrical parameters of capacitors contains a loading mechanism 1, transporting a disk 2 with measuring heads 3, recharging, monitoring and rejection of short-circuited and non-trained capacitors, transporting a disk 4 with measuring heads 3, carrying out a capacitor podrenirovaniyu, transporting disk 5 with measuring devices heads 3, carrying out podtrenirovka and control of leakage current capacitors, transporting disk 6 with measuring heads 3, producing the discharge of capacitors, their control over the loss tangent and capacitance, and the transporting disk 7, which carries out the screening of capacitors by quality groups. The transporting disks are covered by an endless chain of 8 with satellites 9, which

transfer capacitors. The conveying discs receive rotational motion from the drive mechanism 10. The conveying disc 6 has an AND connection mechanism, which serves to

connecting the control unit with the recording devices through the contact brushes 12 (Fig. 2 and Fig. 3) with the switching unit 13 and the measuring heads 3 to the capacitors under test, which are in

constant movement when the device is operating. The switching unit 13, consisting of lu set of insulated contact rings separated from each other, are separated from each other 14 sectors and are electrically fixed stationary actuators with measuring heads 3, located in the center of the transporting disk 6. The measuring heads 3 are fixed on the disk 15, rotating together with the transporting disk 6, but having axial movement on the splines using a flywheel 16 for the purpose of connecting capacitors of various heights. Together with the disk 15 makes axial movement and

a non-rotating copier 17 controlling the closing and opening of the contacts of the measuring heads 3 during the input and output of capacitors by satellites 9 of the circuit 8 to the zone of the transporting disk 6 with the measuring heads 3. The transporting disks 2 have a similar design,

4 and 5.

The connection mechanism 11 (Fig. 1) contains a movable brush holder 18

(Fig. 2 and 3) with spring-loaded brushes 12 and protrusions 19 and 20, mounted with a bearing 21 on the housing of the switching unit 13 and connected by a spring 22 with a fixed bracket 23, sliders 24 with rollers 25, radially disposed on the transporting disk 6 and pressed by the springs 26 on the stop in the direction of the center, and the fixed copier 27, interacting with the rollers 25 of the sliders 24.

The device works as follows.

The test capacitors from the loading mechanism 1 enter the satellites 9 of the chain 8 and are sequentially transported at a constant speed through the transporting disks 2, 4, 5 and 6 with the measuring heads 3. The capacitors falling into the action areas of the transporting disks 2, 4,

5 and 6 are connected by the contacts of the measuring heads 3 through the switching unit 13 and the contact brushes 12 to the electric circuits of the current sources, control units with recording devices, etc.

The rotating switching unit 13 of the transporting disk 6 with measuring heads 3, equipped with a connection mechanism 11, the brush holder 18 of which makes a swinging movement, controls the electrical parameters of the capacitors during the cycle, KOJ and the switching unit 13 and the brush holder 18 make a joint rotational movement.

The slides 24 radially located on the transporting disk 6, by the force of the spring 26 are set to stop so that with their claws during rotation they engage the protrusion 19 of the child holder 18 and the guide give it during the period of the control cycle for monitoring the electrical parameters of the capacitors, after which the slider roller 25 24 enters the zone of interaction with the fixed cam 27, gripping the slide 24 releases the brush holder 18. Under the force of the spring 22, the brush holder 18 returns to its original position, which is defined by the projection 20 on the stop bracket a 23

By returning the brush holder 18, the capacitors are switched, and the cycle is repeated.

Claims (2)

1. USSR author's certificate Afc 427408, cl. OIG 13/00, 1971. 2. USSR author's certificate number 452863, cl. H 01G 13/00, 1972 (prototype).