JPH0416559B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a plated object of a plating hanger used when gripping and plating a plated object such as a printed circuit board for an electronic circuit. The present invention relates to a plating hanger inspection device that automatically inspects for deformation or missing elastic gripping claws.

(Prior art) When plating a small flat plate-like object such as a printed circuit board for electronic circuits, a large number of elastic claws for grasping the object are arranged at required intervals. Cylindrical or rod-shaped plating hangers are used, but these elastic claws can be deformed or broken when attaching or removing the plated object.
There is a drawback that the automatic attachment and detachment of the plated object cannot be carried out smoothly. However, in the past, there was no technology for automatically inspecting such deformations and omissions.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned problems and provides a plating hanger inspection device that can automatically, accurately and quickly inspect this type of plating hanger. It has been perfected for the purpose of

(Means for Solving the Problems) The present invention to solve the above-mentioned problems provides a cylindrical or rod-shaped plating in which a large number of elastic claws for grasping a plated object are arranged at predetermined intervals. a transfer mechanism that supports a tamping hanger and transfers it intermittently at low speed; a clamp mechanism that clamps a tamping hanger supported by the transfer mechanism at a predetermined stop position; and a tamping hanger clamped by the clamp mechanism. The invention is characterized by comprising a claw detection mechanism that inspects the elastic claws by inserting a detection end between the elastic claws and energizing the current-carrying portion thereof.

(Embodiments) The present invention will be described in detail below with reference to illustrated embodiments.

In the figure, 1 is a cylindrical plating hanger to be inspected, and six columnar racks 4 are set up between a ring-shaped bottom plate 2 and a top plate 3. As shown in FIG. 5, horizontal bars 5 are welded, and each horizontal bar 5 has elastic claws 6, 7 for gripping a plate-shaped object 50 such as a printed circuit board for an electronic circuit from above and below. They are placed outward at required intervals. At the center of the top plate 3, a support part 8 with a truncated cone-shaped depression on the lower surface is attached by an arm 9. The object to be plated 50 is placed and rotated gently in a plating bath while being electrically energized through the elastic claws 6 of the columnar rack 4 to perform gold plating or the like.

10 A transfer mechanism that supports the fitting hanger 1 and rotates it intermittently at low speed, and includes a hollow column 12 vertically installed on the machine base 11, and a transfer mechanism that penetrates the hollow column 12 and moves inside the machine base 11. It consists of a rotary shaft 14 rotated at low speed by a motor 13, and a truncated conical rotary disk 15 provided at its upper end. It can be placed and rotated at low speed. Further, as shown in FIG. 2, four anti-sway arms 17 each having a roller 16 at the tip are provided around the transfer mechanism 10 so as to be rotatable by a cylinder 18. The outer circumferential surface of the bottom plate 2 of the plating hanger 1 is held between the two sides, and the plating hanger 1 is stably rotated around its axis by the action of the transfer mechanism 10 and these rollers 16.

20 is a clamp mechanism installed around the hollow column 12, and is opened and closed by a frame 22 that slides on a rail 21 laid on the top surface of the machine base 11 and a cylinder 23 provided on the front surface of the frame 22. It is provided with a clipper 24 which holds the columnar rack 4 of the hanger 1 for plating from the inside of the hanger 1 for plating.
The entire clamping mechanism 20 is connected to the rail 21 by a cylinder 25 whose upper end is pivotally attached to the hollow column 12 and a bell crank 26 whose center is pivoted to the hollow column 12 and whose tip is pivoted to the piston rod of the cylinder 25.
When a photoelectric switch (not shown) detects that the columnar rack 4 is in front of the clipper 24, the transport mechanism 10
is stopped, and the clamping mechanism 20 is moved forward to clamp the columnar rack 4 with the clipper 24 and clamp the plating hanger 1 at a predetermined position.

Reference numeral 30 denotes a pawl detection mechanism, which includes a frame 33 that moves forward and backward on a rail 31 laid on the top surface of the machine base 11 by an advance/retreat cylinder 32, and two upper and lower cylinders 34 and 35 on the front of the frame 33. a reciprocating frame 36 supported so as to be able to reciprocate by a predetermined distance in the vertical direction;
A claw detection end 3 protrudes horizontally from the front surface of the reciprocating frame 36
7, and the claw detection end 37 is connected to each elastic claw 6, 7.
An annular groove 38 is provided at both ends of the annular groove 38 in which the elastic claws 6 and 7 are fitted, and a current-carrying portion 39 is provided at the bottom of the annular groove 38 in contact with the elastic claws 6 and 7. It is equipped with And this claw detection mechanism 3
0, the claw detection end 37 is advanced toward the elastic claws 6 and 7 being clamped by the clamp mechanism 20, and is positioned on the outer surface of the elastic claws 6 and 7, and as shown in FIG. The elastic claw 7 that supports the lower end of the object 50 to be plated is bent upward by reciprocating the distance, and the elastic claw 6 that supports the upper end of the object 50 is bent downward. A current is applied to the current-carrying part 39 at the top dead center and bottom dead center to detect whether or not the elastic claws 6, 7 are in contact with the current-carrying part 39 at those positions, thereby detecting the missingness and shape of the elastic claws 6, 7. It detects deformation.

(Function) In this structure, the clamping hanger 1, which has the elastic claws 6 and 7 arranged around the outer periphery for gripping a mated object, is transferred to the transfer mechanism 10 in an empty state with the mated object 50 removed. The plating hanger 1 is stabilized on the transfer mechanism 10 by placing the plating hanger 1 on the rotary disk 15 and rotating the anti-sway arm 17 to bring the roller 16 at the tip into contact with the outer peripheral surface of the plating hanger 1. In this state, the transfer mechanism 10
is driven to rotate the plating hanger 1 around the axis of the plating at a low speed. During this rotation, when it is detected by a photoelectric switch (not shown) that the columnar rack 4 of the plating hanger 1 has come to the front position of the clipper 24 of the clamp mechanism 20, the transfer mechanism 10 At the same time as the rotation of the hanger 1 is stopped, the clamp mechanism 20 moves forward by the action of the cylinder 25, and the clipper 24 clamps the columnar rack 4 by the action of the cylinder 23, and clamps the plating hanger 1 at a predetermined stop position. Next, the claw detection mechanism 30
The cylinder moves forward toward the clamped columnar rack 4, and positions the claw detection end 37 horizontally disposed on the front surface of the rack outside the elastic claws 6 and 7 being clamped, and the claws are activated by the cylinders 34 and 35. The detection end 37 is directed upward and raised a predetermined distance to bend the elastic claw 7 upward, and the elastic claw 6 of the claw detection end 37 is bent upward.
It is inspected whether or not it is in contact with the energizing part 39 provided at the contact part with 7. As a result of this inspection, the elastic claw 7
If contact is confirmed, it can be seen that the elastic claw 7 is present at a predetermined position and in a predetermined state. However, if contact is not confirmed, the elastic claw 7 is missing or is located below or on the side of the claw detection end 37. It can be seen that it is in an abnormal state, such as bending in one direction, and in such a case, an alarm is issued to notify the worker of the abnormality. When the inspection of the elastic claw 7 is completed, the claw detection end 37 is then lowered by a predetermined distance by the cylinders 34 and 35, similarly bending the elastic claw 6 downward and inspecting the abnormality. In this way, each elastic claw 6, 7 on one columnar rack 4
When the inspection is completed, the claw detection mechanism 30 and the clamp mechanism 20 are sequentially retreated, and the rotation mechanism 10 is operated to rotate the plating hanger 1 until the next columnar rack 4 comes to the front position of the clipper 24. , and thereafter, each of the elastic claws 6 and 7 is inspected in the same manner.

In the embodiment described above, the plating hanger 1
has a cylindrical shape and the transfer mechanism 10 rotates intermittently, but as in the second embodiment shown in FIGS. 6 and 7, the plating hanger 1 is made into a rod shape and , the transfer mechanism 10 may be of a type that performs linear intermittent feeding.

The plating hanger 1 of the second embodiment is equipped with a horizontal support rod 40 at the upper end, and this support rod 4 is attached to a hook 41 of a chain conveyor-like transfer mechanism 10.
0 is hooked and intermittent feed is performed in a straight line. Also,
A receiving roller 43 is provided directly below the transfer mechanism 10 and is moved up and down by a cylinder 42. Since the plating hanger 1 is slightly lifted by the receiving roller 43, the clipper 24 of the clamping mechanism 20 engages the plating hanger 1. This means that it can always be clamped at a constant height. Since the other parts are the same as those in the first embodiment, corresponding parts are given the same numbers and their explanation will be omitted.

(Effects of the Invention) As is clear from the above description, the present invention is applicable to a plating device in which a large number of elastic claws for grasping the object to be plated are arranged by a combination of a transfer mechanism, a clamp mechanism, and a claw detection mechanism. This allows hangers to be inspected accurately and quickly, and labor and inspection time can be significantly reduced compared to conventional visual inspection. Therefore, the present invention contributes to the development of the industry as a plating hanger inspection device that can automatically inspect this kind of plating hanger used for gold plating of printed circuit boards for electronic circuits. is extremely large.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing the first embodiment of the present invention, FIG. 2 is a partially cutaway plan view, and FIG. 3 is a partially cutaway front view showing the main parts of the claw detection mechanism. 4
The figures are also a side view of the main parts, FIG. 5 is a perspective view showing the columnar rack part of the fitting hanger, FIG. 6 is a partially cutaway front view showing the second embodiment of the present invention, and FIG.
The figure is a partially cutaway right side view. 1: Hanger for plating, 6, 7: Elastic claw, 1
0: Transfer mechanism, 20: Clamp mechanism, 30: Claw detection mechanism, 37: Claw detection end, 39: Current-carrying part.

Claims (1)

[Scope of Claims] 1. Supports a cylindrical or rod-shaped plating hanger in which a large number of elastic claws for gripping the object to be plated are arranged at required intervals, and transports the plating hanger intermittently at low speed. a clamping mechanism 20 that clamps the tamping hanger 1 supported by the transporting mechanism 10 at a predetermined stop position;
A hook detection mechanism 30 for inspecting the elastic hooks by inserting a detection end 37 between the elastic hooks of the hanger for attaching clamped by a screwdriver and energizing the current-carrying part 39 of the hanger. Inspection equipment. 2. The plating hanger inspection device according to claim 1, wherein the transfer mechanism 10 is of a type that rotates the cylindrical plating hanger 1 intermittently. 3. The plating hanger inspection device according to claim 1, wherein the transfer mechanism 10 is of a type that linearly intermittently feeds the bar-shaped plating hanger 1.