JPS58183961A - Apparatus for coating small parts with liquid substance - Google Patents

Abstract

PURPOSE:To uniformly coat the surface of small parts with a liquid substance by a simple structure, by a method wherein a pallet having a liquid substance tank and a filling tank is horizontally moved and a fixing plate having a filling needle fixed thereto is moved upwardly and downwardly. CONSTITUTION:A semi-circular filling recessed parts 20 are provided to a pallet 16 having a liquid substance tank 18 filled with a liquid substance 17 while a fixing plate 30 having filling needles 32 is provided. After the filling needles 32 are immersed in the liquid substance tank 18, the fixing plate 30 is moved to fill the filling recessed parts 20 with the liquid substance 17 while the lower part of small parts is surrounded by the filling recessed parts 20 to coat the same with the liquid substance 17. By this method, the coating of the liquid substance to small parts is automated, subjected to reduction of labor and can be made uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid substance coating device for small parts that partially applies a flag-like substance to small parts such as electronic parts such as solid electrolytic capacitors.

In general, solid electrolytic capacitors have an anode lead wire made of tantalum or other material embedded in an anode body made of a sintered body such as tantalum.The anode body has an anodized film, a semiconductor layer such as manganese dioxide, and an anode layer on top of this semiconductor layer. A cathode lead wire is connected to this cathode layer by soldering, a solderable lead wire is connected to the anode lead wire by welding, etc., and the whole is molded with synthetic resin.

In such solid electrolytic capacitors, if an external force is applied to the anode lead wire during the assembly process up to the formation of the resin molded exterior, the contact between the anode body and the anode lead wire will deteriorate, causing the capacitor's characteristics to deteriorate. There was a problem with deterioration.

For this reason, an epoxy resin is applied to the end face of the capacitor element to reinforce the anode lead wire drawn out from the capacitor element.

To apply a liquid substance such as epoxy resin to the end face of small parts such as capacitor elements, fill a syringe with the liquid substance and manually apply it to the end face of each small part one by one. Liquid substances were applied to the end surfaces of small parts using a complex liquid substance application device consisting of a substance tank section, a pressure feeding section, a liquid volume control section, etc.

However, these methods have poor workability.

The equipment was complex and difficult to maintain and adjust, and it took time and effort to collect and clean the liquid substance inside the equipment after each work was completed.

Furthermore, the above method has the disadvantage that the state of application of the liquid substance is not stable.

That is, as shown in FIG.
The liquid substance 3 is extruded to a certain width 4 on the end surface 1a from which the liquid substance 3 is drawn out.
It is extremely difficult to apply the coating so that the constant thickness 6 and the constant thickness 6 are almost equal, and as shown in FIG. As shown, the amount of application is large, the protrusion width is 4, and the thickness is 6.
There were many cases where the dog became dog-like.

This has disadvantages in that the effect of reinforcing the terminal 2 against external forces cannot be obtained, and the exterior cut-out shape becomes extremely sharp and deformed.

The present invention eliminates the above-mentioned conventional drawbacks, and provides a liquid substance application device for small parts that can uniformly and reliably apply a liquid substance to the end surface of small parts and that is easy to maintain and adjust. The purpose is to

In order to achieve the above object, the present invention provides a liquid substance layer filled with a liquid tank material on both sides of a small part held upright with the terminal facing down, and half of the end face of the small part on the end face of the small part. A pallet with a concave portion which holds a certain amount of liquid substance supplied from the liquid substance tank is provided so as to be movable in the horizontal direction, and the tip of the liquid substance tank is placed on this pallet to remove the liquid substance attached to the concave portion. A filling needle with a pointed lower end for dispensing a fixed amount is arranged so as to be movable up and down.

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

FIG. 2 is a cross-sectional view of a liquid substance applicator for small parts according to an embodiment of the present invention, and FIG. 3 is a partial perspective view of the same device. The main body of the applicator is shaped like a letter. Reference numeral 7 denotes a U-shaped installation stand provided at the center of the bottom plate 6C and having a fixing groove 7a in the center.

The cylindrical small parts 8 having the same shape are fixed in the fixing groove 7a of the installation base 7 with the terminals 9 facing down. That is, the small part 8 is fixed to the installation stand T with the coating surface 8a facing down.
Furthermore, the coating surface 8a of the small part 8 and the installation base 7 are arranged so as to be spaced apart from each other. Two bearing holes 10 are provided in the side wall 6a of the device main body 6 at positions equidistant from the bottom plate 6C of the device main body 6, and two bearing holes 11 are provided in the side wall 6b at positions equidistant from the bottom plate 6c. It is a provision. In addition, two bearing holes 12 are provided in the bottom plate 6C at positions equidistant from the side wall 6a, approximately in the middle between the installation base 7 and the side wall 6a.
A bearing hole 13 is provided at a position equidistant from the side wall 6b, approximately halfway between the side wall 6b and the side wall 6b. 14 is passed through the bearing hole 1o of the side wall 6a, and two sliding shafts 16, which move horizontally with respect to the bottom plate 6c by a drive device (not shown) outside the main body 6, are passed through the bearing hole 11 of the side wall 6b. , is a pallet having an external drive device (not shown) K, and the end of the sliding shaft 14 is connected to one side of the node 16 so that the opening of the liquid substance tank 18 faces upward. . A plate-shaped protrusion 19 is provided on the opposite surface of the knoblet 16 from the connecting surface of the sliding shaft 14 in a direction horizontal to the bottom plate 6C.

At the end of the plate-like projection 19, there are provided four semicircular filling parts 20 that are larger than the semicircle of the coating surface 8a of the cylindrical small part 8 so that the small part 8 can shake. Further, the bottom surface of the filling recess 20 is located slightly below the coating surface 8 of the small part 8, and the end of the filling recess 20 on the end surface of the plate-like protrusion 19. A cutout portion 21 that covers a semicircumference of the terminal 9 of the small component 8 is provided at the lower part of the portion. A pallet 22 having the same shape as the pallet 16 is provided at the end of the sliding shaft 16 on the bottom plate 6C so that the pallet 16 and the pallet 22 are symmetrical about the installation base 7. That is, a liquid substance tank 24 that fills the liquid substance 23, a filling recess 25 having a semicircular shape and the same shape as the filling recess 20 at the end, and a notch 2.
The pallet 22 has a notch 26 of the same shape as 1 and a plate-shaped protrusion 27 connected to the liquid substance tank 24, and the sliding shaft 16 is connected to the surface opposite to the surface on which the plate-shaped protrusion 27 is provided. has been done. Further, at this time, the bottom of the filling recess 26 is at the same height as the filling recess 2o.

The two vertical shafts 28 are inserted through the shaft. At that time, the bearing hole 12
The pallet 16 passes between the upper and lower shafts 28 due to the wide spacing between the upper and lower shafts 28. At the end of the vertical shaft 28 on the bottom plate 6c, there is a rectangular plate-shaped fixing plate 3o having holes 29 at two corners near the side wall 6a for fixing the ends of the two vertical shafts 28. fixed in a parallel position. Fixed plate 3o
There are two vertical axes 2 at positions equidistant from the surface on the installation stand 7 side.
Two fixing holes 31 are provided in parallel with the vertical axis 28, and two filling needles 32 with one end rounded are fixed in a state parallel to the vertical axis 28 with their pointed portions facing the bottom plate 6c side. There is. In this case, the interval between the two fixing holes 310 is the same as the filling recess 2 of the pallet 16.
The interval is set to be the same as the 0 interval. Further, a vertical shaft 33 that is moved up and down by an external drive device (not shown) is inserted and passed through the bearing hole 13 of the bottom plate 6C. A fixing plate 36 is fixed to the end of the vertical shaft 33 so that the fixing plate 3o to which the filling needle 32 is fixed and the fixing plate 35 to which the filling needle 34 of the same shape is fixed are symmetrical about the installation base 7. ing. That is, the fixed plate 36 has two vertical shafts 3 at two corners near the side wall 6b.
A hole (not shown) is provided for fixing the end of the fixing plate 35, and a fixing hole (not shown) is provided at an equidistant position on the surface of the fixing plate 35 closer to the installation base Y.
(not shown), and the filling needle 34 is fixed in the fixing hole with the pointed end facing the bottom plate 6C.

Next, the operation of the above-mentioned liquid substance coating device will be explained in accordance with the order of the drawings.

FIGS. 4A to 4C are partial perspective views of a liquid substance application apparatus according to an embodiment of the present invention, showing the process of applying a liquid substance 17.degree. 23 to a small part 8. FIGS.

(m) First, pallet 1 is moved by the sliding shaft 14 (not shown) so that the liquid substance tank 18 is positioned directly below the filling needle 32. Then, as shown in FIG.
Move o.

Next, as shown in FIG. 4B, the fixing plate 30 is raised until the tip of the filling needle 32 is separated from the liquid surface of the liquid substance 17. At this time, a portion of the liquid substance 17 adheres to the tip of the filling needle 32 in the form of drops.

(C) After the fixing plate 3o has been raised, move the pallet 16 so that the filling recess 20 is located directly below the filling needle 32, and then remove the drop-shaped tip of the filling needle 32 as shown in FIG. 4C. The fixing plate 3o is lowered so that the liquid substance 17 adheres to the application recess 20.

(D) After that, the fixing plate 3o is raised so that the four filling parts 2o are above the pallet 16, and then the pallets 16 and 22 are installed so that the filling recesses 2o and 26 to which the liquid substance 17 has adhered are joined. so that they abut on a stand 7 (not shown).

Move to. At this time, the terminal 9 of the small part 8 fixed to the fixing groove 7a (not shown) of the installation base 7 is inserted into the filling recess 20.
It is held by fitting into a hole formed by notches 21 and 26 (not shown) below 25. Further, as shown in the fourth diagram, the lower part of the small part 8 including the coating surface 8a is a filling recess 20,
surrounded by a cylindrical groove consisting of 25.

Immersed in liquid substance 17.23VC.

(Tsukasa) Finally, as shown in FIG. 4E, the pallet 16 is moved in the direction away from the small parts 8.

The small part 8 whose coating surface 8a is uniformly and thinly coated with the liquid substance 17.23 remains fixed in the fixing groove 7a of the installation base 7.

By repeating the above steps, the application of the liquid substance to the small parts can be automated and labor-saving, and the liquid substance can be applied uniformly.

As described above, the filling needle 32.3 is
4 to the liquid substance tank 18, 24 liquid substance 17.23
The liquid substance 1 attached to the tip of the filling needle 32.34
7.23 is filled into the filling recess 20.25, and the small part 8 is fixed to the fixing groove 7a of the installation base 7 by the filling recess 20.25, and the application surface 8a and the installation base 7 are separated. As a result, the work of applying the liquid substance 17 to the application surface 8a of the small part 8 can be labor-saving and mechanized with a simple structure, and the liquid substances 17 and 23 can be uniformly applied to the application surface 8a of the small part 8. be able to.

In the above embodiment, the filling recess 20.degree. 25 was semicircular, but if the size and shape of the filling recess were changed depending on the size and shape of the small part 8, the liquid substance 17. 23 coatings can be applied.

Further, in the above embodiment, each of the small parts 8 has one terminal 9, but if there is a plurality of terminals, the notch 21
．． By changing the number, position or size of 26,
The liquid substance 17.19 can be applied to various small parts.

In the embodiment described above, since the amount of the liquid substance 17, 23 applied to the small part 8 is extremely small, the liquid level in the liquid substance tanks 18, 24 hardly changes. As a result, when the moving distance of the fixing plates 3Q, 35 to which the filling needles 32, 34 are fixed is set, the amount of liquid substance 17.19 filled into the filling recess 20.25 is stable. Also, due to the moving distance of the fixed plate 30°358, the filling recess 20,
The amount of liquid substance 17.19 filled in 25 can be adjusted.

In the above embodiment, the number of small parts that can be coated with the liquid substance 17.19 in one process shown in FIG. By increasing the number of small parts, a large number of small parts can be coated in one process.

As described above, one aspect of the present invention is to move two pallets having a liquid substance tank and a filling groove horizontally by sandwiching a component installation stand,
By moving up and down the two fixing plates to which the filling needles are fixed, it is possible to save labor and mechanize the work of applying liquid substances to the application surface of small parts with a simple structure. It can be applied uniformly, and can be used to apply epoxy resin for fixing and reinforcing tantalum wire in solid electrolytic capacitors.

[Brief explanation of drawings]

FIG. 3 is a partial perspective view of the fabric device, and FIG. 4A-4 is a partial perspective view showing the coating process of the same device. 6... Coating device main body, 7... Installation stand,
8...-Small parts, 9...Terminals, 16.
22. River...Pallet, 17.19...Liquid substance, 19.24...Liquid substance tank, 19.27.
...Plate-shaped protrusion, 20.21 ... Application recess, 21.26 ... Notch, 30°36 ...
...Fixing plate, 32.34...Filling needle. Name of agent: Patent attorney Toshio Nakao and one other person
)−

Claims (1)

[Scope of Claims] Two plate-like protrusions arranged facing each other with a small component with the terminal facing down, each having a concave portion surrounding the lower side and bottom surface of the small component from two directions on the end surface, and a liquid substance tank for storing a liquid substance to be applied to the small component provided on an end face opposite to the end face having the concave portion of the plate-like protrusion;
A pallet on the table. The liquid material for small parts is capable of being horizontally movable so that the recessed part and the liquid substance tank are positioned directly below a vertically movable filling needle having a pointed lower end and in which the end faces of the plate-shaped protrusion are in contact with each other and are movable up and down. Substance application equipment.