JPH0528533Y2 - - Google Patents

Description

[Detailed explanation of the invention] (1) Purpose of the invention [Field of industrial application] The invention is used for aging, current conduction tests, etc. carried out at the final stage of the manufacturing process of electronic circuit parts, electrical appliances, etc. The present invention relates to a cleaning device for a pallet with a current collector plate in a free flow conveyor having an energizing mechanism.

[Prior Art] Conventionally, aging in the manufacturing process of electronic circuit components such as semiconductor integrated circuits is carried out by applying a predetermined voltage to the product for a certain period of time. A method is adopted in which a current collecting plate placed on the pallet is brought into contact with a correspondingly placed fixed electrode while the pallet is moved on a conveyor, and the product is energized via the current collecting plate. ing.

In current collectors using such means, contact may occur due to the formation of an oxide film on the surface of the current collector plate or the adhesion of soot generated by an arc when the moving current collector plate and fixed electrode come into contact and separate from each other. An increase in resistance and even an inability to conduct electricity occur.

For this reason, in conventional equipment, the number of fixed electrodes per pallet is increased in the moving area of the current collector plate to reduce contact resistance and improve poor contact, or the pallets are periodically removed from the conveyor. Attempts have been made to clean the pallets, or to arrange a rotating cleaning brush in contact with the current collector plate in the pallet moving area of the conveyor.

[Problems to be solved by the invention] Of the above-mentioned stabilizing means for the current collector, the means of adding fixed electrodes not only complicates the configuration, but also is not a basic solution for stabilization. However, it is still not possible to prevent the generation and adhesion of soot. The pallet cleaning method is not economical because it requires labor and expense. In addition, the brush cleaning means rotates a rotating brush arranged in a direction crossing the pallet moving area in the same direction or in the opposite direction to the pallet moving direction,
Since the surface of the current collector plate is scrubbed and cleaned, the rotating action of the brush changes the pallet moving speed and creates cleaning spots. The erratic changes in pallet travel speed are extremely disadvantageous.

An object of the present invention is to provide an apparatus which can solve the above-mentioned problems in a cleaning means using a rotating brush which is excellent in workability and economical efficiency.

(2) Structure of the invention [Means for solving the problems] The present invention is arranged in the passage area of the pallet in a free flow conveyor having an energizing mechanism, and the current collector is placed at a position corresponding to the current collector plate of the pallet. A rotating brush is provided on a sliding rotating surface that faces parallel to the plate surface, and the brush is configured so that the center of the rotating surface coincides with the center of the current collector plate in the moving direction. The present invention resides in a pallet current collector plate cleaning device that can solve the above problems.

[Function] A pallet used in a free flow conveyor with a current-carrying mechanism usually has several strip-shaped current collecting plates long in the direction of movement on its back surface, and fixed electrodes that come into sliding contact with each of these current collecting plates. It is arranged in the movement area of the current collector plate. The rotating brush is arranged at a position in front of the conveyor on which the electrode is disposed in the direction of movement of the conveyor, preferably at a position away from the position of the electrode by a distance corresponding to the length width in the direction of movement of the pallet.

In this manner, with the rotating brush arranged, when the pallet moving on the conveyor reaches the position of the rotating brush, the current collector plate surface is rubbed by the brush, and deposits such as soot are removed. . When the current collector plate is rubbed, the contact and sliding direction of the brush against the current collector plate, that is, the direction of rotation of the brush, effectively affect the stable transfer of the pallet.

According to the device of the present invention, the brush is located at a position where its rotating surface in sliding contact with the current collecting plate faces parallel to the current collecting plate, and the center of the rotating surface substantially coincides with the center of the current collecting plate in the moving direction. Contact with. Therefore, regardless of the direction of rotation, the tip of the brush slides on the current collecting plate in opposite directions with respect to the center line of the moving direction of the current collecting plate, and as a result, Since the acting force in the moving direction due to brush sliding on the pallet is canceled out, the pallet can be stably transferred by the conveyor.

[Example] The device of the present invention will be described below based on the example shown in the drawings.

Referring to Figure 1, free flow conveyor 1
, several rollers 3 driven by an endless chain belt 2 are arranged at both ends thereof, and the pallet 4 to be placed on the upper surface of these rollers 3 is moved at a constant speed in the direction of the arrow in the figure. There is. Such conveyor devices are known in the art.

The pallet 4 has several current collector plates 5a, 5b, 5c arranged in a band shape in the direction of movement of the pallet 4 on its back surface in accordance with the number of poles. On the other hand, fixed electrodes 6 of the number corresponding to the current collecting plates are arranged at positions where the current collecting plates 5a, 5b, 5c of the conveyor 1 pass, and are in contact with the moving current collecting plates and are connected to the current collecting plates. Electricity is supplied to the processed products placed on the upper surface of the pallet from a connector 7 disposed on the upper surface of the pallet 4 via an electric plate.

Rotary brushes 8a, 8b, and 8c are disposed in front of the fixed electrode 6 in the conveyor 1 with an energizing mechanism in correspondence with the current collecting plates 5a, 5b, and 5c.

The rotating brushes 8a, 8b, 8c are, for example,
As shown in the figure, a hair bundle 10 is formed upright at the tip of each rotating shaft 9, and the diameter of the sliding surface of the hair bundle is approximately the same as the width of each of the current collector plates 5a, 5b, and 5c. It is formed exactly. Each rotating shaft 9 is supported in the device main body 12 by each bearing sleeve 11, and a belt 14 is hung around each pulley 13 attached to the other end of the rotating shaft, and a rotating brush is driven by a pulley 16 of a drive motor 15 provided in the main body. 8
a, 8b, and 8c are configured to rotate at high speed.
Furthermore, the main body 12 includes a pair of left and right lifting mechanisms 17.
The main body is supported by an operating shaft 18 of the mechanism, and the mechanism is attached to the conveyor 1 by a support column 19 that supports the mechanism. In addition, as the drive motor 15, an electric motor, a hydraulic motor, etc. are applied, and the elevating mechanism 17 is also applied with an electromagnetic rod or a hydraulic cylinder.
It goes without saying that each rotating shaft 9 of 8b and 8c may be rotated by a separate drive motor.

The main body 1 has rotating surfaces in sliding contact with the rotating brushes 8a, 8b, 8c facing parallel to plate surfaces of the moving current collector plates 5a, 5b, 5c, and a center portion of the rotating brushes 8a, 8b, 8c facing the current collector plates. As shown in FIG. 1, the belts are mounted on the conveyor 1 in a state where the widths of the belts are approximately aligned with the center of each width.

According to this embodiment, when a pallet 4 on which processed products are placed and a lead cord connected to the connector 7 is set on the conveyor 1, the pallet 4 is moved by the feed roller 3 in the direction of the arrow in FIG. 8a, 8b, and 8c, the arrival of the pallet is detected by a micro switch or a photoelectric switch (not shown), etc. arranged in the movement area, and the sensing signal is used to operate the lifting mechanism 17, and the second From the brush lowered state shown in the figure, the operating shaft 18 is extended to push up the main body 12, bring the rotating brushes 8a, 8b, 8c into contact with the current collector plates 5a, 5b, 5c, and operate the drive motor 15 to move the rotating brushes. It can be rotated.

The current collector plates 5a, 5b, 5c are rotary brushes 8a,
8b and 8c rub the plate surface of the current collector plate in parallel and opposing rotating motions, and as a result, the plate surface is cleaned and comes into contact with each fixed electrode 6 in the next moving range. Then, the movement of the pallet 4 passing through the brush position and reaching the position of each fixed electrode 6 is detected, and the drive motor 15 is stopped based on the detection signal, and the operating shaft 18 of the lifting mechanism 17 is retracted to move the main body 12. lowering and withdrawing the rotating brushes 8a, 8b, 8c from their working position.

(3) Effects of the invention As described above, according to the device of the present invention, the rotating brush for cleaning is moved to the center of the sliding surface of the rotating current collector plate that faces parallel to the surface of the current collector plate. Since the portion is configured to face the center of the current collector plate in the moving direction, the force acting on the current collector plate in the moving direction by the brush is canceled out, and the current collector plate is moved stably by the conveyor. The electric plate can be cleaned reliably, and since only the surface of the current collector plate is rubbed, the brush itself is made small to reduce wear and provide sufficient contact pressure with the current collector plate. can be kept. Therefore, the device of the present invention is extremely useful in practice as a device that can efficiently clean the current collector plate in the pallet and can prolong the life of the pallet and fixed electrode.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the installed state of the device of the present invention;
FIG. 2 is a layout diagram showing an embodiment of the device of the present invention. 1... Free flow conveyor, 4... Pallet, 5a, 5b, 5c... Current collector plate, 8a, 8b,
8c... Rotating brush, 9... Hair bundle, 12... Main body, 15... Drive motor, 17... Lifting mechanism.

Claims (1)

[Claims for Utility Model Registration] (1) A sliding contact disposed in a pallet passage area of a free flow conveyor having an energizing mechanism and facing parallel to the current collecting plate surface of the pallet at a position corresponding to the current collecting plate. Equipped with a rotating brush having a rotating surface,
A cleaning device for a pallet current collector plate, characterized in that the brush is configured so that the center of the rotating surface is aligned with the center of the current collector plate in the moving direction. (2) The rotating brush is formed of a tuft of hair planted in a direction perpendicular to the surface of the current collector plate, and the diameter of the rotating surface in sliding contact with the tuft of hair is approximately the same as the width of the current collector plate. A cleaning device according to claim 1 of a certain utility model registration claim. (3) The cleaning device according to claim 1, wherein the rotating brush is always stationary in the passage area of the current collector plate. (4) Utility model registration claim 1, wherein the rotating brush is configured to move into and out of contact with the current collector plate in conjunction with the movement of the pallet.
Cleaning device as described in section.