JPH02302006A - Coating apparatus of electronic component - Google Patents

Abstract

PURPOSE:To make a thickness of a paint uniform on both sides of a main body part by a method wherein guide members which catch and support a conveyance tape from its both sides are arranged and installed near a position directly above a paint-spraying nozzle. CONSTITUTION:A group of free-turning guide rollers 6 as guide members which catch and support a whole width of a conveyance tape 2 being conveyed from both sides are arranged and installed respectively near positions directly above paint-spraying nozzles 5, 5. The group of the individual free-turning guide rollers 6 are constituted in such a way that three guide rollers 6 which sandwich the conveyance tape 2 mutually and which are arranged so as to be faced in a zigzag shape are supported by shafts at the lower side of an apparatus frame 7. One guide roller out of them is arranged in a position directly above the paint-spraying nozzle 5; the other two are arranged in directly above adjacent positions facing the paint-spraying nozzle 5 via the conveyance tape 2. An electronic component 1 which has been suspended and supported by the conveyance tape 2 sandwiched between the guide rollers 6 is hard to retreat toward the opposite side by a spraying pressure from the paint-spraying nozzle 5.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic component coating apparatus used for coating a main body portion of an electronic component with lead terminals.

<Prior Art> As an example of this type of electronic component with lead terminals (hereinafter referred to as electronic component), as shown in FIG. 4, a pair of long lead terminals 1b extend from a disc-shaped main body portion 1a. In order to paint this main body portion 1a, a coating device having a structure as shown in FIG. 5 is used.

This coating device suspends and supports a large number of electronic components l from a transport tape 2 through lead terminals 1b, and while transporting the transport tape 2 along a predetermined path, The paint sprayer arranged on the side is configured to spray paint from a nozzle 5.5 toward the main body part 1a. Therefore, this coating device is designed to solve problems that occur in devices that apply paint via a transfer roller to the main body of electronic components that are suspended and transported. It has the advantage that it can be used to paint electronic parts without wasting paint because it hardens or deteriorates when exposed to air.

<Problems to be Solved by the Invention> By the way, in the conventional coating apparatus, the conveyance team 1
As the transfer speed of 2 increases, the vibration accompanying the tape running increases, and the main body portion 1a of the electronic component 10 to be coated swings left and right, and the distance between the paint spray and the nozzle 5.5 fluctuates. The coating thickness was to be different on the left and right sides. Also, due to this,
Since the amount of paint adhering to the base A (see FIG. 4) of the lead terminal 1b, so-called lead sagging, becomes unstable, it has unfavorable effects on both appearance and characteristics. Therefore, the painting work for these electronic parts cannot be performed at a very high speed, resulting in the inconvenience of a lack of mass productivity.

An object of the present invention is to provide an electronic component coating apparatus that can eliminate such inconveniences.

<Means for Solving the Problems> In order to achieve such an object, the present invention is configured to transport an electronic component with a lead terminal suspended and supported by a transport tape along a predetermined path, and , In an electronic component painting apparatus that has a nozzle provided for spraying paint facing the main body of the electronic component on the side of the middle part of the transfer route, the conveyor is placed in the vicinity of a position directly above the paint spraying nozzle. This tape is characterized by being provided with guide members that receive and support the tape from both sides.

According to the above configuration, the paint spray disposed in the middle of the transfer path is received and supported by the guide member from both sides of the conveyor tape located near the position directly above the nozzle, and the conveyor tape is suspended and supported. This means that the vertical orientation of the electronic components can be stably maintained. Therefore, the distance between the main body of the electronic component and the nozzle for spraying paint is constant and does not fluctuate.

<Embodiment> Figures 1 to 3 show an embodiment of the coating apparatus for electronic parts according to the present invention. FIG. 3 is a perspective view showing an enlarged view of the main part, and FIG. 3 is a front view showing the main part enlarged.

The coating apparatus according to the present invention is basically configured in the same way as the conventional example. That is, the tips of the pair of lead terminals 1b extending from the main body portion 1a of the electronic component 1 are clamped and fixed between the base tape 2a and the adhesive tape 2b that constitute the transport tape 2, and a large number of the electronic components 1 The conveyor tape 2, which is suspended and supported at a certain angle, is conveyed to the roller 3 in a contracted position.
, 4 along a predetermined route.

A pair of spray nozzles 5.5 for spraying paint onto the main body portion 1a of the electronic component 1 is provided at a predetermined position on the side in the middle of this transfer path.

Furthermore, paint spraying is performed near the position directly above the nozzles 5, 5.
Six groups of freely rotating guide rollers are provided as guide members that receive and support the entire width of the conveying tape 2 being conveyed from both sides thereof. Each group of free-rotating guide rollers 6 is constructed by three guide rollers 6 arranged facing each other in a staggered manner while sandwiching the conveyance member 12 between them, and are pivotally supported on the lower side of the device frame 7. One of them is arranged directly above the nozzle 5 for spraying paint, and the other two are arranged in the vicinity of directly above the nozzle 5, facing the nozzle 5 via the conveying tape 2. Note that each of the guide rollers 6 can be rotated extremely lightly by using ball bearings (not shown). Therefore, the electronic component 1 suspended and supported by the conveying tape 2 sandwiched by these guide rollers 6 becomes difficult to retreat toward the opposite side depending on the pressure of the paint sprayed from the nozzle 5.

Note that the guide member in the present invention is not limited to the 6 groups of free-rotating guide rollers described above, and may be, for example, a guide rail.

However, in such a case, if the gap between the guide rails is too small in order to maintain the vertical posture of the transport tape 2,
It is also conceivable that the frictional resistance between the transport tape 2 and the guide rail becomes large, causing problems in tape running. On the other hand, when the conveying tape 2 is supported by a group of 6 groups of free-rotating guide rollers, the frictional resistance that hinders tape running becomes extremely small, and the distance between the guide rollers 6 is made sufficiently small to maintain the vertical posture of the conveying tape 2. It has the advantage of being sufficiently maintainable.

<Effects of the Invention> As explained above, according to the present invention, the paint spray disposed in the middle of the transfer path is received and supported by the guide member from both sides of the conveyor tape located near the position directly above the nozzle. , the vertical posture of the electronic component suspended and supported by the transport tape is stably ensured. Therefore, the distance between the main body of the electronic component and the nozzle for spraying paint is constant and does not fluctuate. Therefore, the vertical position of the transport tape is stably maintained without interfering with the running of the transport tape, and paint spraying is performed with the distance between the nozzle and the main body of the electronic component kept constant. As a result, the paint thickness on both sides of the main body can be made uniform, lead sagging can be stabilized, and the commercial value based on appearance can be improved and the electrical characteristics can be stabilized.

In addition, since the transport tape can be guided without any hindrance to tape running, it becomes easy to increase the transport speed of the transport tape, resulting in the effect that productivity can be improved.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic plan view showing the entire coating device, FIG. 2 is a perspective view showing an enlarged main part thereof, and FIG. FIG. 3 is an enlarged front view showing the main parts thereof. Moreover, FIG. 4 is a front view showing an example of a painted electronic component, and FIG. 5 is a schematic perspective view showing a conventional coating device. In the figure, reference numeral 1 is an electronic component (electronic component with lead terminals), 1a is its main body, 2 is a conveying tape, 5 is a nozzle for spraying paint, and 6 is a guide roller (guide member).

Claims (1)

[Claims] (1) An electronic component with a lead terminal suspended and supported by a transport tape is configured to be transported along a predetermined path, and a paint material is placed on the side of the midway part of the transport path, facing the main body of the electronic component. An electronic component painting apparatus provided with a spray nozzle, characterized in that a guide member for receiving and supporting the conveying tape from both sides is disposed near a position directly above the paint spray nozzle. painting equipment.