End surface electrode forming device for electronic parts

Abstract

The object is to provide an end surface electrode forming device for electronic parts, capable of achieving coincidence between the carrying speed of an electronic part to be carried and the peripheral speed of a application roller for transfer-apply an electrode forming material to the electronic part by a simple operation. It comprises a carrier (1) carrying electronic parts (2) with their opposite end surfaces exposed, a pair of parallel application rollers (3, 3a) disposed on both sides of the carrier (1) and brought into contact with the opposite end surface of the electronic part being carried by the carrier for transfer-applying an electrode forming material to the opposite end surfaces, and a driving mechanism (10) rotatively driving these application rollers while synchronizing them with each other in the carrying speed of the carrier and in the carrying direction, wherein the driving mechanism rotatively drives the application rollers in opposite directions and at the same rotative speed.

Description

technical field [0001] The present invention relates to a device for forming end surface electrodes of electronic components such as chip arrays. Background technique [0002] In the past, for electronic components such as chip arrays, electrodes were provided on a pair of parallel end faces. Devices for forming such end face electrodes are known, for example, having such Figure 4 device with the structure shown. [0003] This device is a device for coating silver paste as an electrode material on the end face of an electronic component 2 to form an end face electrode. The carrier 1 whose end faces of these electronic components 2 move bidirectionally at a predetermined speed is arranged on both sides of the carrier 1, is in contact with the above-mentioned electronic components 2, and transfers and coats electrode forming materials such as silver paste on the end faces. A pair of parallel coating rollers 3, 3a. [0004] The above-mentioned carrier 1 is moved at a certai...

AI Technical Summary

Problems solved by technology

[0012] However, in the conventional device, the rotation of each of the above-mentioned coating rollers 3, 3a can only be controlled by the driving motors 15, 15a respectively provided, and by controlling the two driving motors 15, 15a, the above-mentioned two coating rollers 3. The peripheral speed of 3a is consistent with the conveying speed of the above-mentioned carrier 1, which requires extremely high-precision control, and this operation is very complicated

[0013] In addition, the above-mentioned drive motors 15, 15a also have uneven rotation speeds even when they make one rotation.

The above control is made more difficult due to the fact that the speed unevenness produced varies.

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