JP4809878B2 - Barrel plating equipment - Google Patents

Description

  The present invention relates to a barrel plating apparatus for electrolytically plating a rose-shaped object to be plated.

  A barrel plating apparatus that rotates a barrel container in an electroplating bath and electroplates a charged object to be plated is placed in a horizontal direction in the plating bath by a driving device such as a motor. Many of them are driven to rotate around the axis in one direction, and this barrel container is driven to rotate, causing the rose-shaped objects to move along the side wall on the lower side of the barrel container to flow to each other. Electrolytic plating is uniformly applied by contacting with the cathode disposed in the plate.

  However, when the object to be plated is a fine powder such as metal powder or carbon powder, the layer of the powdered object to be plated is not contained inside even if the barrel container is rotated in one direction. Since it moves along the side wall on the lower side while being agglomerated, there is a problem that the mutual flow within the layer is deteriorated and uniform electrolytic plating cannot be performed.

  As a means for preventing such agglomeration of the powder-like object to be plated, a method of providing a fluid vibration stirring means in the plating tank (for example, see Patent Document 1) or a method of applying vibration to the barrel container (for example, Patent Document 2) has been proposed.

JP 2002-88497 A JP 2003-293191 A

  The method of providing the fluid vibration agitation means in the plating tank described in Patent Document 1 makes the apparatus complicated and expensive, and there is also a possibility that the plating solution in the plating vessel may generate waves and the plating solution may scatter. . In addition, the method of applying vibration to the barrel container described in Patent Document 2 complicates the support mechanism of the barrel container that is rotationally driven, and the rotational drive system of the barrel container is liable to fail, and maintenance of the apparatus is difficult. There is a difficult problem.

  Therefore, an object of the present invention is to provide a sufficient mutual flow within the layer when moving along the side wall on the lower side of the barrel container even if the object is a powdery object with a simple and easy-to-maintain configuration. Is to occur.

  In order to solve the above-mentioned problems, the present invention is to rotate a cylindrical barrel container that is horizontally oriented in an electrolytic plating bath around a horizontal axis, and to form a rose-shaped covering placed in the barrel container. In a barrel plating apparatus for electrolytically plating a plated product, the barrel container is reciprocated in a direction orthogonal to the axis, and the rotation direction of the barrel container is reversed between the forward and backward directions of the reciprocation. .

  That is, the barrel container is reciprocated in a direction orthogonal to the axis, and the barrel container is rotated in the forward direction and the backward direction of the reciprocating movement, thereby rotating the barrel container in the barrel direction. When moving along the lower side wall of the container, sufficient mutual flow was created within the bed.

  The means for reversing the rotation direction of the barrel container in the forward direction and the backward direction is provided at both ends of the barrel container with wheels rotating around the axis integrally with the barrel container, and in the plating bath, By providing a pair of parallel rails on which the wheels on both ends of the barrel container roll, the barrel container is reciprocatingly rolled along the rail with the wheels, so that the configuration is simple and easy to maintain. The rotation direction of the barrel container can be reversed between the forward direction and the backward direction.

  By making the wheel a toothed wheel having a gear formed on the outer periphery and making the rail a rack rail formed with a rack meshing with the gear on the upper surface, slip between the wheel and the rail can be prevented.

  A means for reciprocally rolling the barrel container along the rail is provided with a circular shaft portion coaxial with the shaft center on at least one end side of the barrel container, and an arm for rotatably gripping the circular shaft portion is suspended from above. By reciprocally swinging the arm, the barrel container can be reciprocally rolled along the rail with a simple and easy-to-maintain configuration.

  The reciprocating arm is slidable in the longitudinal direction with a long hole extending in the longitudinal direction of the arm at an eccentric part of a crankshaft that is driven to rotate about a horizontal axis parallel to the axial center of the barrel container. And a crank arm that is reciprocally swung with the rotation of the crankshaft.

  Each of the barrel plating apparatuses described above is suitable for the above-described rose-shaped object to be powdered.

  The barrel plating apparatus of the present invention reciprocates a barrel container that is horizontally oriented in the electrolytic plating bath in a direction orthogonal to the axial center, and reverses the rotation direction of the barrel container in the forward and backward directions of this reciprocation. Since it did in this way, even if it is a powdery to-be-plated thing, when it moves along the side wall of the lower side of a barrel container, sufficient mutual flow arises in a layer, and it can electroplat uniformly.

  A means for reversing the rotation direction of the barrel container in the forward direction and the backward direction is provided at both ends of the barrel container with wheels that rotate integrally with the barrel container and around the axis, By providing a pair of parallel rails on which the wheels on both ends roll and rolling the barrel container back and forth along the rails with the wheels, the barrel container can be moved in the forward direction with a simple and easy maintenance configuration. And the reverse direction can be reversed.

  By making the wheel a toothed wheel having a gear formed on the outer periphery and making the rail a rack rail formed with a rack meshing with the gear on the upper surface, slip between the wheel and the rail can be prevented.

  The means for reciprocally rolling the barrel container along the rail is provided with a circular shaft portion coaxial with the shaft center on at least one end side of the barrel container, and an arm that rotatably grips the circular shaft portion is suspended from above. By reciprocally swinging the arm, the barrel container can be reciprocally rolled along the rail with a simple and easy-to-maintain configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This barrel plating apparatus is for electroplating a fine powder-like object to be plated. As shown in FIG. 1 and FIG. 2, a support member 2 is suspended on the upper edge of the plating tank 1, and above the electrolytic plating bath. A motor 4 and a speed reducer 5 as a driving source for reciprocatingly swinging a crank arm 14 to be described later are disposed on a support base 3 of the provided support member 2, and a lower end portion is connected by a connecting frame 6 to be placed in a plating bath. A pair of left and right parallel rack rails 8 are attached to the lower part of the left and right side frames 7 and are axially integrated with the barrel container 9 at both ends of a cylindrical barrel container 9 into which an object to be plated is placed. A tooth wheel 10 rotating around is attached, and these tooth wheels 10 mesh with a pair of left and right rack rails 8 so that the barrel container 9 rolls in a direction orthogonal to the axis. A handle 11 is provided on the support member 2, and the motor 4 and the speed reducer 5 are covered with a cover 12 so that the plating solution does not splash.

  The disc portion 13a of the crankshaft 13 serving as the output shaft of the motor 4 and the speed reducer 5 is provided with an eccentric projection pin 13b, and the crank arm 14 extends in the longitudinal direction of the arm on the proximal end side. The long hole 14a is slidably engaged in the longitudinal direction, and is supported by a fulcrum 15a of a fulcrum shaft 15 below the side frame 7 so as to be swingable. A bifurcated gripping portion 14b for rotatably gripping a circular shaft portion 16 provided coaxially with the shaft center on one end side of the barrel container 9 is provided at the tip of the crank arm 14 suspended in the plating bath. Is provided.

  Therefore, as shown in FIGS. 3A and 3B, by rotating the crankshaft 13 in one direction, the crank arm 14 slides around the fulcrum 15a while sliding with the projection pin 13b through the long hole 14a. The barrel container 9 that reciprocally swings and grips the circular shaft portion 16 rotatably by the gripping portion 14b reciprocally rolls on the rack rail 8 with the toothed wheel 10 as indicated by an arrow in the figure, The rotation direction is reversed between the forward direction and the backward direction, and mutual flow is generated in the layer of the powdery object to be plated that moves along the side wall on the lower side of the barrel container 9.

  In this embodiment, the crankshaft 13 is driven to rotate clockwise. As shown in FIG. 3A, when the projecting pin 13b is positioned above the disc portion 13a, the barrel container 9 is moved to the left. As shown in FIG. 3B, when the protruding pin 13b is positioned below the disc portion 13a, the barrel container 9 rolls to the right. Further, when the protruding pin 13b is positioned on the upper side of the disc portion 13a, the distance from the fulcrum 15a of the crank arm 14 to the protruding pin 13b is increased, so that the rolling speed of the barrel container 9 is decreased, and the protruding pin 13b. Is located below the disc portion 13a, the distance from the fulcrum 15a of the crank arm 14 to the protruding pin 13b is shortened, so that the rolling speed of the barrel container 9 is increased. Thus, even if the rolling speed changes between the forward direction and the backward direction, the mutual flow in the layer of the powdery object to be plated becomes active. In addition, the rotational speed of the crankshaft 13 can be changed according to the amount of the object to be plated put into the barrel container 9 and the mutual fluidity.

  As shown in FIGS. 2 and 4, the anode rod 17 is suspended in the plating bath, and the flexible covered conductive wire 19 having the cathode terminal 18 attached to the tip thereof is connected to the circular shaft portion 16 of the barrel container 9. It is introduced into the barrel container 9 from a central hole 20 provided on the opposite side. The conducting wire 19 led into the barrel container 9 has its tip drooped downward so that the cathode terminal 18 contacts the object to be plated that flows along the lower side wall as the barrel container 9 rotates. ing.

  As shown in FIGS. 5 and 6, the barrel container 9 is divided into two hexagonal tubular members 9a and 9b at the central dividing surface, and these cylindrical members 9a and 9b are provided on the dividing surface. The flanges 21 are butted together and are integrally coupled by screws 22, and one side surface of the coupled hexagonal cylinder is an opening 23, and the opening 23 is closed by an integral lid member 24. . Each cylindrical member 9a, 9b and the lid member 24 are made of resin, and a mesh 26 finer than the object to be plated is formed on the cylindrical surface of each cylindrical member 9a, 9b and the lattice-shaped crosspiece 25 provided on the lid member 24. Insert molding is performed from the inner side of the barrel.

  In the above-described embodiment, the barrel container wheel is a toothed wheel, and the guide rail is a rack rail. However, these wheels and rails only need to cause no slippage during rolling, either one or both The friction coefficient of the rolling surface can be increased.

  Further, in the above-described embodiment, the arm that reciprocally swings so as to reciprocately roll the barrel container is the crank arm, the arm length is changed by the elongated hole on the proximal end side, and the grip portion on the distal end side is bifurcated. However, the grip portion on the distal end side may be an annular shape that grips the entire circumference of the circular shaft portion. It is also possible to extend the bifurcated grip and change the arm length at this grip.

Partially cutaway front view showing an embodiment of a barrel plating apparatus 1 is a partially cutaway side view of FIG. a and b are side views for explaining the movement of the barrel container in FIG. 1 is an enlarged front cross-sectional view of the main part of FIG. The front view which shows the barrel container of FIG. Sectional view along line VI-VI in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plating tank 2 Support member 3 Support base 4 Motor 5 Reduction gear 6 Connection frame 7 Side frame 8 Rack rail 9 Barrel container 9a, 9b Cylindrical member 10 Tooth wheel 11 Handle 12 Cover 13 Crank shaft 13a Disc part 13b Projection pin 14 Crank Arm 14a Long hole 14b Grasping part 15 Support point shaft 15a Support point 16 Circular shaft part 17 Anode rod 18 Cathode terminal 19 Conductor wire 20 Center hole 21 Flange 22 Screw 23 Opening 24 Lid member 25 Crosspiece 26 Mesh

Claims (5)

  In a barrel plating apparatus for electrolytically plating a rose-shaped object to be plated placed in the barrel container by rotating a cylindrical barrel container oriented horizontally in an electrolytic plating bath around a horizontal axis, the barrel Provided at both ends of the container with a wheel that rotates integrally with the barrel container and rotates around the axis, and provided with a pair of parallel rails in which the wheels at both ends of the barrel container roll in the plating bath, The barrel container is reciprocated in the direction orthogonal to the axial center along the rail with the wheel, and the rotation direction of the barrel container is reversed between the forward direction and the backward direction of the reciprocating movement. Barrel plating equipment. The wheel and the tooth wheel forming a gear on the outer periphery of the barrel plating apparatus according to claim 1 in which the rack rails forming a rack in which the gear engages the rail on the top surface. The means for reciprocatingly rolling the barrel container along the rail is provided with a circular shaft portion coaxial with the shaft center on at least one end side of the barrel container, and an arm for rotatably holding the circular shaft portion is suspended from above. The barrel plating apparatus according to claim 1 or 2 , wherein the arm is reciprocally swung. The arm to be reciprocally swung is slidable in the longitudinal direction at the base end portion by a long hole extending in the longitudinal direction of the arm on the eccentric portion of the crankshaft that is driven to rotate about a horizontal axis parallel to the axial center of the barrel container. The barrel plating apparatus according to claim 3 , wherein the barrel plating apparatus is configured to be a crank arm that is engaged with and pivotably supported at a lower fulcrum and reciprocally swings as the crankshaft rotates. Barrel plating apparatus according to any one of claims 1 to 4 wherein the rose-like object to be plated is of powder form.

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