JPH01321073A - Soldering device with work discrimination function - Google Patents

Abstract

PURPOSE:To improve soldering efficiency by providing a work discrimination means, a soldering condition retrieving means and discriminating kinds of plural works and performing soldering fitted to the respective works on a line. CONSTITUTION:A conveyor 11 is provided to the upper surface center of a base 10 and a work discrimination part 14 and a soldering part 15 are arranged side by side in the vicinity thereof. When the works 13 are carried in the lower part of the discrimination part 14 via the conveyor 11, a sensor detects these and contactors 21R and 21L fall till they come into contact with the works 13. At this time, the discrimination part 14 retrieves soldering conditions registered from a work corresponding file and inputs these to the soldering part 15. By this method, a control part 17 performs soldering under the soldering conditions fitted to the works 13. Since the plural kinds of works 13 and 13' can be soldered on the line, the soldering efficiency is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a soldering device, and particularly to a soldering device with a workpiece discrimination function that is suitable for handling a plurality of types of workpieces.

[Conventional technology]

Conventional soldering equipment uses the iron method and the hot wire method.

There are methods that use various heating methods, such as laser methods and hot air methods, but all of them require predetermined soldering conditions (supplied solder blue,
(heating time, solder cooling time, etc.). ′! Furthermore, as described in JP-A-62-172791, feedback type soldering equipment that controls the heating time etc. according to the soldering situation also
The target work was limited to one type.

[Problem to be solved by the invention]

The conventional soldering equipment described above is limited to one type of workpiece, so it cannot be used on a production line where multiple types of workpieces flow together. Since multiple types of workpieces were soldered under the same common divisor soldering conditions, it was difficult to improve the soldering quality.

SUMMARY OF THE INVENTION An object of the present invention is to provide a soldering device that can be used in a production line where a plurality of types of workpieces coexist and can perform good soldering on each workpiece.

[Means to solve the problem]

The above purpose is to determine the type of work to be soldered,
A workpiece discrimination means outputs the results, a soldering condition search means outputs soldering conditions suitable for the workpiece by referring to a file in which multiple soldering conditions are registered based on the discrimination results, and a soldering condition search means outputs the soldering conditions suitable for the workpiece. This is achieved by providing a soldering section that performs soldering under specific conditions.

[Effect]

In the soldering device of the present invention, prior to soldering,
The workpiece discrimination means discriminates the type of workpiece, and the soldering condition search means compares the workpiece discrimination result with the soldering condition file and outputs soldering conditions suitable for the target workpiece. Since soldering is performed, it is possible to solder multiple types of workpieces under appropriate conditions.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 6 takes a magnetic head of a video tape recorder as an example of a workpiece to which the soldering apparatus of the present invention is applied, and shows the planar shape of the head base 1 having a rectangular protrusion 1ai on one side as seen from the top. A core 2 is fixed to a fixed position on the wall surface of the protruding portion 1a by pasting or the like, and a covered electric wire 3 is wound around the core 2. Both ends of the covered electric wire 30 pass through the hole 1b and are drawn out to the other side wall surface of the head base 1. Further, a wiring board 4 is pasted on the other side wall surface of the head base 1, and on this wiring board 4,
Solder-plated parts to be soldered SR and SL are provided, and the ends of the covered electric wire 3 are respectively soldered to these parts to be soldered.

As shown in FIG. 7, the wiring boards 4 tend to have 21 types of wiring patterns 4a and 4b depending on the type of workpiece9, and the soldering conditions for each workpiece differ depending on the wiring pattern. The soldering device of this embodiment is
This can be applied to a production line where two types of workpieces flow together.

FIG. 1 is an overall external view of the soldering device.

A conveyor 11 is provided at the center of the upper surface of the base 10, and pallets 12 and 12' move on this conveyor 11.

A plurality of workpieces 13 and 13' are placed on the pallets 12 and 12', with the parts to be soldered facing upward and the parts to be soldered being aligned. On the base 10, a workpiece discriminating section 14 and a soldering section 15 are provided upright in line with the conveyor 11. Reference numeral 16 denotes a control section of the workpiece discrimination section, and numeral 17 denotes a soldering control section, which are electrically connected to the workpiece discrimination section 14 and the soldering section 15, respectively, and are connected to the control section 16 of the workpiece discrimination section for soldering control. An electrical connection is also made with the section 17.

The soldering section 15 is composed of a soldering iron 19, a solder supply section 20, and a soldering drive section 18. The soldering drive section 18 moves the iron 19 and the solder supply section 20 up and down, and the soldering section 20 supplies solder, and a soldering iron 19 performs soldering. The operations of the soldering section described above are executed by commands issued by the soldering control section 17 in accordance with soldering conditions given for each workpiece.

Next, the configuration of the workpiece control section 14 will be explained with reference to FIG. Contactors 21R and 121L are attached to the probes 22R and 22L, and the gloves 22R and 22L are coupled to the holding portion 23. The holding part 23 is moved in the direction of arrow 27 by the driving part 24.
It has a structure that allows it to move up and down as shown by. The probes 22R and 22L are connected to the control unit 1 by electric wires 25.
A workpiece sensing circuit (not shown) in 6 is connected to K. The control section 16 also includes a soldering condition search section 28, which will be described later.

Using the soldering apparatus configured as described above, flat head soldering is performed as described below.

First, a method for identifying a workpiece will be explained with reference to FIGS. 2 and 7. As shown in Fig. wE2, when the workpiece 13 reaches a predetermined position below the workpiece discrimination section 14, this is detected by a position sensor (not shown), the drive section 24 is operated, and the holding section 23 is moved downward. move it to By moving the holding part 23, the prongs 22R and 22L can be moved to 22R.
', 22L' and contactors 21R, 21L.
are brought into contact with the workpiece 13 as shown by 21R' and 21L'. Here, the work 13 is the wiring board 4 in FIG. 7(a).
ai, the contacts 21R', 21L' contact the contacted parts 6R, 6L, 1C, respectively. Contacted part 6
Since there is a wiring pattern between Ra and 6L, there is electrical continuity between the contacts 21M, 21r, . Further, when the workpiece 1'5 has the wiring board 4b shown in FIG. 7(b), the contacts 21R' and 21L' contact the contacted parts 6R1, 6I, and b, respectively. However, the contacted part 6 R
Since there is no wiring pattern between b, 6 L,
There is no electrical continuity between the contacts 21R' and 21L', and the work sensing circuit in the control unit 16 connects the contacts 21R'
.

When a predetermined voltage is applied between 21L' and 21L', the presence or absence of conduction is detected and output as binary information.

Next, a method for identifying a workpiece and a method for searching for soldering conditions will be explained with reference to FIGS. First, the procedure for determining the type of workpiece by the workpiece determining section is as follows. Using the output information of the workpiece sensing circuit as input information, the workpiece discrimination section 14 searches the workpiece correspondence file 29. The contents of the work correspondence file 29 are shown in FIG. That is, there are records for the number of registered works, and the first field of each record is the record number, the second field is the state when each work is detected, and the third field is the work salt. It is. The work discrimination unit 14 sequentially collates each record and finds a record in which the work sensing circuit output information and the information in the second field match. When a corresponding record is found, the third
Output field information as work discrimination result.

Next, a procedure for searching for corresponding soldering conditions based on this output information will be explained. Using the output information of the workpiece determination section 14 as input information, the soldering condition search section 28 searches the soldering condition file 30. The contents of the soldering condition file 30 are shown in FIG. 5, that is, it has twice as many records as the number of registered works, and the first field of the odd-numbered record contains the record number, and the second field contains the work salt. , the third field contains the preheating time, and the fourth field contains the preheating time.
The amount of solder is registered in the field. The first field of even-numbered records contains the record number, the second
The additional heating time is registered in the field, and the solder cooling time is registered in the third field.

The soldering condition search unit 28 sequentially collates the odd-numbered records and finds a record in which the workpiece discrimination result and the information in the second field match. When a corresponding record is found, the information in the 3rd and 4th fields of that record is output as preheating time and solder amount, and the information in the 2nd and 3rd fields of the next even-numbered record is output as additional heating time,
Output as solder cooling time.

Through the above procedure, it is possible to determine the type of workpiece and output the soldering conditions corresponding to each type of workpiece. This output information is converted into a predetermined electrical signal and sent to the soldering control section 17 in FIG. 1. Then, based on these conditions, the soldering section 15 receives a command from the soldering control section 17 and operates to solder the target workpieces, so that good soldering can be achieved under conditions suitable for each workpiece. I can do it.

In this embodiment, a method of determining based on the presence or absence of electrical continuity is used as a workpiece determination method, but the method is not limited to this, and any determination method such as optical determination may be used.

〔Effect of the invention〕

According to the present invention, since the type of workpiece is determined and soldering is performed under soldering conditions suitable for each workpiece,
In a production line where a plurality of types of workpieces coexist, each workpiece can be soldered properly.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an embodiment of the present invention, FIG. 2 is a detailed perspective view of the workpiece discrimination section, and FIGS. 3, 4, and 5 are workpiece discrimination and soldering conditions of this embodiment. The search procedure explanatory diagrams, FIGS. 6 and 7, are plan views of the workpieces targeted by this embodiment. 13.13... Work 14... Work discrimination section 15... Soldering section 16... Control section 17 of the work discrimination section... Soldering control section 28... Soldering condition search section, 29 ...Work correspondence file 30...Soldering condition file. 10th 19°゛ Trowel 20・+i Lf='Small Pregnancy 2nd
Figure 30 40 Figure 6 70 (Q) (shi)

Claims (1)

[Claims] 1. A workpiece discrimination means that discriminates the type of workpiece to be soldered and outputs the result, and a soldering device that outputs soldering conditions suitable for the workpiece by referring to a file in which multiple soldering conditions are registered based on the above discrimination results. 1. A soldering device with a workpiece discrimination function, comprising: a condition search means; and a soldering section that performs soldering under the conditions output from the search means.