JPS61111597A - Automatic insertion matching test for axial lead type electronic component - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is intended to examine whether the terminals of shaft-lead type electronic components, the strength of resistors, etc., do not impede the practicality of automatic insertion machines and mounting machines, and their suitability. Concerning test methods for confirming gender.

(Conventional structure and its problems) When assembling electronic equipment, inserting and attaching electronic components such as axial leads, vertical leads, and chip components to printed circuit boards is now done from an economic and reliability perspective. Automatic insertion and placement machines are being used extensively. Among them, the popularity of insertion machines for axial lead type electronic components is remarkable, but the terminal strength of axial lead type electronic components (such as poor lead welding) and resistor strength defects (such as poor lead welding) during insertion and after inserting printed circuit boards. The occurrence of resistor cracks, etc.) is a very important problem in order to ensure the operating rate of automatic insertion machines, the process defect rate, and the reliability of electronic equipment.

Testing methods for terminal strength and resistor strength are specified in JIS-C-5202 as a guarantee method for shaft-lead type electronic components, but they are insufficient for practical guarantees with automatic insertion machines, and the following methods are provided. Many confirmations are required.

■Terminal strength is generally evaluated by axial tension, torsion, and bending tests, but the method of applying load with an automatic insertion machine is as shown in the direction of the arrow in Figure 1 (b). The direction is perpendicular to . FIG. 1 is a diagram showing the operation of the insertion head of an automatic insertion machine, in which (a) shows homing, (b)
) shows the inserted state, and (c) shows the clinch state, and in the figures, 1 is the inserter, 2 is the molded member, 3 is the pusher spring, 4 is the shaft lead type electronic component, and 5 is the printed circuit board.

(2) Resistor bending strength is generally measured by static load as shown in Figure 2, but in automatic insertion machines it is measured by dynamic load.

■The product shape is L as shown in Fig. 3 (IJ dimension as shown in Fig. 3), paint sag as shown in Fig. 4, and eccentricity of the left and right leads as shown in Fig. 5 can also cause defects (the direction of the arrow indicates how the load is applied).

■ Shaft-lead type electronic components used in automatic push-in machines are used in a taped state, but the dimensional accuracy of the taping can also cause defects, as shown in an example in Figure 6 (in the case of ■, the load is applied in the direction of the arrow). join).

(Objective of the Invention) The present invention has been made against the background of the above-mentioned circumstances, and aims to evaluate the predicted defects and reliability of parts inserted by an automatic insertion machine, and to determine whether they are suitable for automatic insertion parts. It provides a test and inspection method for comprehensively evaluating quality.

(Structure of the Invention) To achieve this object, the present invention places an axial lead type electronic component horizontally stationary on an iron plate, applies a jig to the roots of the left and right leads on the main body side, and places the jig on the top of the jig. This is done by dropping a more constant load from a certain height, and with this, it is possible to determine whether automatic insertion is suitable or not with a single test.

(Explanation of Examples) Embodiments of the present invention will be described below with reference to the drawings.

■Set the shaft lead type electronic component 4 on the iron plate 6 so that dimension A in Fig. 7 is at the center of the taping (
(Due to the reason mentioned above).

■The 8th dimension in Figure 7 was changed to L + d,
The test jig 7 is applied to the bases of the left and right leads of the shaft lead type electronic component 4 (L, D, and d are shown in FIG. 8). Note that L + a and L + D/2 are appropriate for the 8 dimensions. 8 dimensions (in the case of L+d, as shown in FIG. 9 (■), the lead wire is cut, and 8 dimensions) At L + D/2, as shown in FIG. 9 @, the stress applied to the shaft lead type electronic component 4 is released.

(2) Drop the load 8 from the height C- above the test jig 7 as shown in FIG. At that time, match the C dimension to the inserter stroke dimension of the automatic insertion machine (MIN 3 Q
mrn degree). Also, load 8 is adjusted to the inserter zone 7 ear panel pressure (approximately MIN 2001).

C) After the test, remove the shaft lead component 4 from the testing machine shown in FIG. 7 and check for any damage or abnormalities in the terminals and resistor.

The present invention tests whether the axial reel type electronic component is suitable as an automatic insertion component as described above.

(Effects of the Invention) As described above, the present invention, which previously required a wide variety of tests to confirm suitability for automatic insertion, can now determine whether or not it is compatible with automatic insertion with a single test. Its practical effects include dogs.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the operation of the automatic pusher for insertion into the machine, Figure 2 is a diagram showing how to apply the load for a static load body strength test, and Figure 3 is a diagram showing the length of the body. , Figure 4 is a diagram showing the force applied to the main body during insertion when the paint is dripping, Figure 5 is a diagram showing the force applied to the main body when the left and right lead wires are eccentric, and Figure 6 is a diagram showing the force applied to the main body when inserting the lead wire. , a diagram showing the force applied to the main body when the taping accuracy is poor, and FIG. 7 is a diagram showing the test device of the present invention, where ■ is a front view thereof, and (B) is a side view thereof. 8th
The figure is a diagram showing the structural dimensions of the electronic component including the shaft lead, and FIG. 9 is a diagram explaining the test conditions of the present invention. DESCRIPTION OF SYMBOLS 1... Inserter, 2... Molded element, 3... Pusher spring, 4... Shaft lead type electronic component, 5... Printed circuit board, 6... Iron plate, 7... Test Jig, 8...Load. Figure 1 5 Print + talent

Claims (1)

[Claims] Place the shaft-lead type electronic component horizontally on the table,
A testing method for automatically inserting axial lead-type electronic components, which is characterized by applying a jig to the bases of the left and right leads on the main body side, and dropping a constant load from the top of the jig from a constant height.