JPH03173793A - Terminal plating device - Google Patents

Abstract

PURPOSE:To continuously plate the terminals of a cylindrical insulator such as a reed switch by placing a material to be plated on a carrier belt and immersing the terminals of the material to be plated which are projected from both end edges in the injected plating liquid and plating the terminals. CONSTITUTION:A terminal plating device is formed of a carrier belt 21, a pressing belt 22 described hereunder, a supply body 23 of plating liquid 23a, a cathode and an electromagnetic coil 25 which attracts and holds the material to be plated. The pressing belt 22 is placed on the carrier belt 21 and moved at the velocity different therefrom and pinches the material 1 to be plated while giving rotation to this material 1. The terminals of the material 1 to be plated are continuously plated. The above-mentioned carrier belt 21 holds the axis of the material 1 to be plated at right angle to the direction of transportation and has the projections 21a for controlling transfer on the belt 21. The terminal parts 11a are projected to the width sides of the belt 21 to carry the material 1 to be plated. Further the above-mentioned cathode is provided on the supply body 23 and brought into contact with the terminal parts 11a and arranged obliquely for the belt 21.

Description

[Detailed Description of the Invention] [Summary] A terminal plating process for an electronic component having a magnetic terminal protruding axially from both end faces of a cylindrical insulator such as a glass-enclosed magnetic switch (reed switch). The aim is to provide a terminal plating device that can be automated and smoothly connected to the processes before and after the process, and that reduces the occurrence of terminal surface curling. An apparatus for continuously applying terminal plating to an object to be plated, which holds the object horizontally so that the axis of the object to be plated is perpendicular to the conveyance direction, and restricts movement of the object on the belt. a conveyor belt having protrusions formed at predetermined intervals on its upper surface and conveying the object to be plated with the terminal portion protruding widthwise; A holding belt that holds and rotates the object to be plated;
a plating solution supply body that is located on both sides of the conveyor belt and sprays a plating solution onto the terminal portion of the object to be plated that is being conveyed;
° It is located above the plating solution supply body and contacts the terminal portion of the object to be plated, and is inclined with respect to the conveyor belt so that the contact position changes in the axial direction of the terminal as the object to be plated is transported. The electromagnetic coil is provided below the conveyor belt and attracts and holds the object to be plated through the conveyor belt.

[Industrial application field]

The present invention is a glass-enclosed magnetic switch (reed switch)
The present invention relates to a terminal plating apparatus for electronic components having magnetic terminals protruding axially from both end surfaces of a cylindrical insulator.

In recent years, there has been a strong demand for higher quality and lower costs for small electronic components such as reed switches, and it has become important to automate each process and ensure smooth product flow between processes in the manufacturing process.

[Conventional technology]

FIG. 3 is a diagram showing a cylindrical electronic component having a magnetic terminal, such as a reed switch, which is the object of the present invention.

A reed switch consists of a pair of reed pieces 11 made of a soft magnetic material such as 5270I (an alloy of 52% Ni and the remaining Fe), which are placed opposite each other at a predetermined contact distance, and are inserted into a glass tube 1 together with an inert gas.
It is sealed inside 2! Hood piece 12 is glass tube 1
Terminal portions 11a are formed that protrude in the axial direction from both ends of 2 and are connected to a printed wiring board. This terminal section 11
A is plated with tin or solder. This terminal plating is performed on a glass tube with a lead piece sealed in the state shown in Figure 3. Conventionally, terminal plating was performed using a batch process such as barrel plating or rack plating (hook plating). Ta.

[Problem to be solved by the invention]

In the conventional terminal plating methods using barrel plating and hook plating, loading and unloading the objects to be plated into and out of the barrel, or hooking and removing them from the rack, must be done manually, making it difficult to automate continuous processes before and after. . In addition, barrel plating has the problem that the objects to be plated become entangled in the barrel tank, causing bends in the terminals, which require manual labor to straighten.

The present invention was created in view of the above-mentioned problems, and aims to provide a terminal plating device that can automate the terminal plating process and smoothly connect the processes before and after the process, and that reduces the occurrence of terminal warping. .

[Means to solve the problem]

The above-mentioned problem lies in an apparatus that continuously applies terminal plating to an object to be plated, which has a terminal portion of a magnetic material that protrudes in the shape of an axis from both ends of a cylindrical insulator, and in which the axis of the object to be plated is in the conveying direction. Protrusions are formed on the top surface at predetermined intervals to hold the object horizontally at right angles and restrict movement of the object on the belt, and the object is conveyed with the terminal portion protruding toward the width. a belt; a holding belt that is located above the conveyor belt and moves at a speed different from that of the conveyor belt to rotate and hold the object to be plated; and a presser belt that is located on both sides of the conveyor belt and holds the object to be plated that is being conveyed. a plating solution supply body that sprays plating solution onto the terminal portion of the object; a plating cathode arranged obliquely with respect to the conveyor belt so as to change in the axial direction of the conveyor; and an electromagnetic coil located below the conveyor belt to attract and hold the object to be plated through the conveyor belt. This problem is solved by the terminal plating apparatus of the present invention, which is characterized by having the following.

[Effect]

By simply placing the object to be plated on the conveyor belt, the terminal portion of the object to be plated protruding from both edges of the conveyor belt is conveyed while being immersed in the plating solution spouted from the plating solution supply body, and the predetermined terminal plating is carried out. It will be done.

During this plating process, the object to be plated rotates appropriately at the position placed on the conveyor belt, and the electrode contact position changes as it moves, so that uniform terminal plating is applied to the entire terminal area, and the terminal area is prevented from becoming tangled. Since there is no terminal part, there is no risk of warping.

In addition, parts feeders are used to place the objects to be plated on the conveyor belt, and this can be easily done automatically as needed.After plating, the products are conveyed individually at predetermined intervals, making it easy to automate the removal. It is. By connecting similar devices back and forth, the entire plating process including pre-treatment and post-treatment can be made continuous.

〔Example〕

The present invention will be explained in detail below with reference to the accompanying drawings.

FIG. 1 is a diagram showing the terminal plating apparatus of the present invention, and FIG.
is a side view, and figure (b) is the presser belt 2 in figure (a).
2 is a top view with part 2 removed, and Figure (c) is a front sectional view seen from the conveyance direction of the object to be plated. FIG. 2 is a block diagram of an automatic reed switch terminal plating apparatus incorporating the terminal plating apparatus of the present invention.

In FIG. 1, the terminal plating apparatus 1 of the present invention includes a conveyor belt 21 and a presser belt 22 that sandwich and convey an object to be plated, for example, a reed switch 1 in a horizontal position, and a plating solution applied to the terminal portion 11a of the reed switch being conveyed. The plating solution supply body 23 that supplies the plating solution 23a, the plating electrode 24 that supplies the plating current to the terminal portion 11a, and the reed switch l are connected to the conveyor belt 2.
1 and an electromagnetic coil 25 that is held so as not to move.

The conveyor belt 21 has protrusions 21a formed at a predetermined pitch on its upper surface to prevent rolling, which positions the cylindrical glass tube of the reed switch l so that it does not roll and move on the belt. The reed switches 1 rolled on the inclined surface of the supply section 26 from a parts feeder (not shown) and supplied onto the conveyor belt 21 are latched onto the protrusions 21a and held horizontally at predetermined intervals, with the terminal portions 11a on both sides of the belt. It is placed perpendicular to the transport direction A so as to protrude. The reed switch l is then conveyed horizontally by the movement of the conveyor belt 21, subjected to a predetermined plating treatment, and then discharged onto the inclined surface of the discharge section 27.

The presser belt 22 is attached to the conveyor belt 21 at a predetermined interval.
It is arranged above the reed switch 1 and moves in the conveying direction at a feed speed B different from that of the conveyor belt 21 while pressing the reed switch 1 with an appropriate pressing force.

As a result, the reed switch 1 rotates appropriately on the conveyor belt 21 without changing its position. The electromagnetic coil 25 is provided on the back side along the conveyor belt 21, and the generated magnetic field passes through the conveyor belt 21 and acts on the magnetic body (reed piece) of the reed switch 1 placed on it. , serves to attract the reed switch 1 to the surface of the conveyor belt 21. Due to the action of the pressure belt 22 and the electromagnetic coil 25, the reed switch I is rotated on the conveyor belt 21 without changing its position, and is conveyed horizontally as the conveyor belt 21 moves. The plating solution supply body 23 is provided on both sides along the conveyor belt 21, and a plating nozzle 23b is arranged in a box-shaped plating tank 23c. The plating solution 23a is sprayed all over a predetermined width up to a higher position.

A plating anode (not shown) is provided inside the plating solution supply body 23 in contact with the plating solution.

The plating cathode 24 is an elongated conductor made of platinum wire or the like, and is connected to the terminal section 11 of the reed switch on the upper part of the plating solution supply body 23.
The terminal portion 11a is provided horizontally at the position where the electrode 24 passes and inclined with respect to the moving direction of the conveyor belt 21, and the terminal portion 11a moves while sliding on this electrode 24 while changing the contact position. A plating current is continuously supplied to the terminal portion of the object to be plated.

The terminal plating apparatus configured as described above can successfully perform continuous plating treatment such as tin plating or solder plating on the terminal portion of a cylindrical electronic component having a magnetic terminal such as a reed switch.

Next, an example of an automatic reed switch terminal plating system incorporating the above-mentioned terminal plating apparatus will be explained with reference to FIG.

In the figure, in front of the terminal plating device 34 is a device 33 that performs pre-plating treatments such as electrolytic degreasing and pickling, and behind it are post-processing devices such as washing, drying devices, etc. connected in a line. has been done. These pre- and post-processing devices are also configured in the same way as the plating device, using a processing liquid supply body equipped with a spray nozzle, a conveyor belt, and the like. A common conveying means consisting of the above-mentioned conveying belt and presser belt is provided that passes through all the processing devices, and the reed switch is supplied from the previous process (glass tube sealing process) while being housed in the cartridge 31. is fed into this conveyance means by the parts feeder 32, passes through a plurality of processing devices in sequence, is automatically subjected to terminal plating, is discharged to the parts feeder 37, and is stored in the cartridge 38 again for the testing process. It is sent to subsequent processes such as

All of these processing steps are carried out by automatically feeding correctly arranged reed switches onto a conveyor belt, so no human intervention is required, and there is no terminal surface scraping, making it possible to achieve high-quality terminal plating processing. can.

[Effects of the Invention] As explained above, according to the present invention, it is possible to automatically and continuously perform terminal plating on electronic components such as reed switches that have magnetic terminals on cylindrical insulators. This significantly contributes to reducing manufacturing costs and improving quality of switches and the like.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a terminal plating apparatus of the present invention, and FIG. 2 is a diagram showing an example of automatic plating of reed switch terminals (reed switch). In the figure, l... object to be plated (reed switch), 11 - lead piece, 11a - one terminal part, 12... cylindrical glass tube, 21... conveyor belt, 21a - protrusion, 22--Press belt, 23--Plating solution supply body, 23a--Plating solution, 23b--Plating nozzle, 24---Plating cathode, 25--Electromagnetic coil. −to

Claims (1)

[Scope of Claims] An apparatus for continuously applying terminal plating to an object to be plated (1) having terminal portions (11a) of a magnetic material protruding from both ends of a cylindrical insulator in the shape of a shaft, comprising: Projections (21a) are formed on the top surface at predetermined intervals to hold the object (1) horizontally so that its axis is perpendicular to the conveying direction and to restrict movement of the object (1) on the belt. a conveyor belt (21) that conveys the object to be plated (1) with a portion (11a) protruding widthwise; and a conveyor belt (21) that is located above the conveyor belt (21)
1), a presser belt (22) moves at a speed different from that of the object to be plated (1) and holds the object to be plated (1) while imparting rotation; ) a plating solution supply body (23) that injects plating solution to the terminal part (11a) of the object to be plated; a plating cathode (24) arranged obliquely with respect to the conveyor belt (21) so that the contact position changes in the axial direction of the terminal as the object to be plated (1) is conveyed; and the conveyor belt (21). ) and an electromagnetic coil (25) that is located below the conveyor belt and that attracts and holds the object to be plated (1) via the conveyor belt.