JPS592759B2 - Plating processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fastening processing device that can plate a plated object at high speed and take it out.

Recent advances in electroplating technology have made it possible to significantly increase the electrodeposition speed compared to a static bath by giving a flow velocity to the plating bath and maintaining the flow velocity near the anode and cathode surfaces at high speeds. It became.

For example, the required plating film thickness, which could be obtained in 25 minutes in a conventional static bath, was obtained in 15 seconds in a plating bath with a flow rate as described above. However, even if the required plating film thickness is formed at such high speed, the effects of high-speed 10 plating processing cannot be fully utilized unless an appropriate device is used to take out the plated material from the plating bath. Not done. Conventionally, for this reason, devices have been developed and prototyped that can pick out items that have been plated at a high speed in a plating bathtub at a corresponding high speed, but none of these devices require electricity. It is not possible to take out the plated material from the bathtub at a speed of 15 that can be adapted to the deposition speed, and the effects of high-speed plating processing are not fully utilized. In view of the above circumstances, this invention was researched and developed for the purpose of developing a plating processing device that can be adapted to high-speed plating processing. The plating bath has an inner wall that reduces in diameter, and a container for a plated object made of a nonconductor with a spiral passage and a cathode formed in the inner wall is accommodated in the plating bath. 2
5. An anode is inserted outside the container of the object to be plated, a rotating shaft of the container of the object to be plated is vertically provided, and a drive motor for the rotating shaft is provided outside the plating bath; The outlet of the plating liquid replenishment pipe faces into the object container, and the container for the object to be plated has as many as 30 water permeable holes in its wall surface, and the container for the object to be plated is driven by the drive motor. When the plating is driven to rotate in the plating bathtub, the rotational force causes the object to be plated to rise up the inner wall of the container along the spiral path, and the plating liquid in the container flows out of the container through the water permeable hole. 3
5 is discharged and subjected to plating treatment.

Hereinafter, the present invention will be explained based on the illustrated embodiment.
, 2 are inserted, and 3 is made of a nonconductor such as plastic, and the upper end is open and the diameter decreases toward the lower end, such as an inverted truncated conical shape, a parabolic shape, or This is a rotating shaft of a round head-shaped container for objects to be fitted, 4, which is installed vertically in a bathtub 1 for objects to be fitted. The container 3 is placed in the plating bathtub 1 so that the open upper end 3a is located slightly above the liquid level.
In addition, there are many water permeable holes 3b on the wall surface.
The rotary shaft 4 is passed through the center thereof, and a flange portion 5 for fixing the rotary shaft 4 to the container 3 is provided in the penetrating portion. A bearing part 6 is provided to rotatably support the lower end of the bearing part 4.

In this embodiment, the rotary shaft 4 is hollow, with a passage 7 for the object to be plated formed in its upper part, a replenishment passage 8 for plating liquid in the lower part, and a passage 7 for the object to be plated formed at the lower end of the passage 7 for the object to be plated. A plating material supply port 7a facing the bottom of the plating material container 3 is provided, and the upper end of the plating solution supply path 8 forms a plating solution discharge port 8a that projects obliquely upward into the container 3. In addition, in the lower part of the rotating shaft 4, there are inlets 8b for the plating liquid to be passed through the supply path 8 at appropriate intervals.
,... is formed. A supply hopper 19 for the material to be plated is provided at the upper end of the passage 7 for the material to be plated. 7a so as to be supplied to the vicinity of the center of the bottom of the container 3.

On the other hand, on the inner wall surface of the container 3, for example, a round rod 10 with a diameter of 5 to 6W1 is provided.
As a result, a spiral passage 11 extending from the bottom of the container 3 to the upper end 3a is formed in a direction opposite to the direction of rotation of the rotating shaft 4.

In this embodiment, the round bar 10 is made of a conductor such as copper and serves as a cathode; however, the round bar 10 is made of a non-conductor such as plastic, and a conductor is electrodeposited on its lower surface, which serves as a cathode. Alternatively, cathodes may be separately provided on three sides of the round bar 10.

Furthermore, the passage 7 is not limited to the round rod 10, but may be formed of a plate-shaped body. Furthermore, in this embodiment, a lead wire 12 is connected to the lower end of the round bar 10 that constitutes the cathode.

On the other hand, the upper end part 3a of the container is made into a somewhat gently tapered surface, and the lower end part of the annular draining plate 13 provided in a tapered shape is exposed below the upper end part 3a of the container. A removal guide 14 is provided.

The guide 14 has a protruding guide portion 14a on the inner circumferential side and a flat groove portion 14b on the outer circumferential side, and the inner edge of the guide portion 14a faces below the upper end of the drain plate 13.
Note that 15 is a motor for driving the rotating shaft 4 of the object container. In this embodiment, the motor 15 is a variable speed motor controlled by a computer 16, and the driving force of the motor is transmitted by the belt 17. and is transmitted to the rotating shaft 4 via the pulley 18.

Next, the plating processing method using the plating processing apparatus according to the present invention will be explained.Platted objects such as bolts and nuts are manufactured by the patent No. 419766, which was already proposed by the inventor of the present invention.
Quantitative division using a device such as Patent No. 449352,
The pre-treated
It is discharged to the bottom of the container 3 through the supply port 7a. On the other hand, the container 3 fixed to the rotating shaft 4 by the rotating shaft 4 and the flange portion 5 rotates at a preset speed of the motor 15.

With this rotation, the plating liquid in the plating bath 1 flows through the intake port 8b.
, . . , to a supply path 8 provided inside the rotating shaft 4, and through the supply path 8, is discharged toward the upper side of the container 3 through the discharge port 8a. Further, the object to be plated, which is supplied into the container 3 by the rotational centrifugal force of the container 3, ascends in a direction opposite to the rotation through a spiral passage 11 formed along the inner wall of the container, and The plating liquid is discharged into the plating bath 1 through the water permeable holes 3b, .

Therefore, if electricity is applied between the anodes 2, 2 and the cathode 10 provided along the inner wall of the container 3, the object to be plated moving up the spiral passage 11 will be quickly plated in the plating solution at a high flow rate. After being processed, the liquid is further collected by rotational centrifugal force from the upper end 3a of the container 3, which is the terminal end of the spiral passage 11, through the drain plate 13, over the raised guide portion 14a, and into the groove portion 14b.

Therefore, according to the present invention, it is possible to quickly harden the plated object in the plating solution in a flow rate state, and also to transfer the product to the plating bath 1 in accordance with the plating processing speed.
It can be taken out from. In addition, the product is attached to the bathtub 1.
The speed at which the product is taken out is related to the rotational speed of the container 3, but in this embodiment, the rotational speed of the variable speed motor 15 is controlled by the computer 16 to adjust the rotational speed of the container 3, and the speed at which the product is taken out is controlled by the plating process. It corresponds to the speed. In addition, the container 3 for covering objects is a shallow inverted truncated cone type.
A parabolic shape or a round head shape is preferable. If the shape is a deep inverted truncated cone shape, a parabolic shape or a round head shape, high speed rotation is required to take out the product, and centrifugal force due to the high speed rotation causes the container 3 There is a risk that the plating liquid may run out.

In order to circulate and replenish the plating liquid into the empty container 3, in this embodiment, the lower part of the rotary shaft 4 is made hollow to form a plating liquid replenishment path 8, and its upper end is inserted diagonally upward into the container 3. Although the plating liquid discharge port 8a is formed by protruding from the rotary shaft 4, a plating liquid supply pipe may be provided separately from the rotating shaft 4, and the plating liquid may be supplied into the container 3 by a pump or the like. good.

Further, in this embodiment, the upper part of the rotating shaft 4 is made hollow to form the passage 7 for the covering material, but it is also possible to supply the covering material to the container 3 separately from the rotating shaft 4. good.

Note that in order to continuously rotate the container 3, the rotating shaft 4 is
It is preferable to provide a hand wheel or the like.

[Brief explanation of the drawing]

The drawing is a partially cutaway side view showing an embodiment of the present invention. In the figure, 1 is a plating bathtub, 3 is a plating object container, 4 is a rotating shaft, 8 is a plating liquid supply path, and 11 is a spiral passage.

Claims (1)

[Claims] 1. The upper end is open and the inner wall has an inner wall that decreases in diameter toward the lower end, and a container for a plated object made of a nonconductor with a spiral passage and a cathode formed in the inner wall is placed in the bathtub. Further, an anode is inserted into the plating bath outside the container of the plating material, a rotating shaft of the container of the plating material is vertically provided, and a drive motor for the rotating shaft is connected to the container of the plating material. The plating liquid supply pipe is provided outside the plating bathtub, and the outlet of the plating liquid replenishment pipe faces into the container for the plating material, and the container for the plating material is provided with a large number of water permeable holes in its wall surface. When the container of the object to be plated is driven to rotate in the plating bathtub by the motor, the rotational force causes the object to be plated to rise along the inner wall of the container along the spiral path, and to prevent the plating inside the container. A plating processing apparatus characterized in that the plating processing is performed by discharging the liquid out of the container through the water permeable hole.