A local brush plating equipment

Abstract

The present invention relates to the technical field of valve processing equipment, and in particular to a local brush plating equipment. A motor and a reduction mechanism drive a spindle to rotate. The spindle is connected to a valve body through a flange plate. The spindle drives the valve body to rotate. The brush plating device is installed on a frame through a mounting plate, and the brush plating device comprises a brush plating pen, a plating liquid box, an electro-cleaning liquid box, a cleaning liquid box, an activation liquid box and a liquid replacement control system. The positive pole of an external power supply is electrically connected to the brush plating pen, and the negative pole of the external power supply is electrically connected to the spindle. One end of the brush plating pen extends to the inside of the valve body and is connected to a cotton bag sleeve that abuts against the brush plating surface. An injection tube is provided inside the brush plating pen, and one end of the injection tube opens and extends to one end of the brush plating pen connected to the cotton bag sleeve. The present invention connects the brush plating pen with the positive pole of the external power supply and the spindle with the negative pole. The spindle is connected to the valve body to realize power-on. When the brush plating pen is extended into the valve body, the valve seat sealing part of the inner wall can be brush plated, thereby realizing local brush plating of the inner hole.

Description

Technical Field

[0001] The invention relates to the technical field of valve processing equipment, in particular to a local electric brush plating equipment. Background Art

[0002] Electroplating technology is widely used in the field of mechanical manufacturing. Brush plating is developed from tank electroplating technology. It is a special method of electroplating. The principle is similar to electroplating and is a process of electrochemical deposition. Its process flow includes: grinding (offline grinding) - water washing - degreasing - water washing - electrocleaning - deionized water washing - activation - deionized water washing - brush plating - deionized water washing - drying (dry hot air); the principle is basically similar to that of electroplating, and it is also an electrochemical deposition process.

[0003] For valves that need to ensure good sealing for long-term use, they are usually electroplated to achieve the above effect. However, the existing electroplating technology has the problems of poor effect and great limitations, especially for carbon steel valves such as valve seat sealing parts that are prone to rust. General electroplating equipment cannot electroplate the valve seat sealing part on the inner wall of the valve body, so it is necessary to propose a device that can perform local brush plating on the inner hole. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a local brush plating device. The present invention connects the positive pole of an external power supply to a brush plating pen and the negative pole to a main shaft. The main shaft is connected to a valve body to realize power supply. The brush plating pen is extended into the valve body to perform brush plating on the valve seat sealing part of the inner wall, thereby realizing local brush plating of the inner hole.

[0005] The technical solution adopted by the present invention is as follows: a local brush plating device is used to perform brush plating on the valve seat sealing part inside the valve body, including a frame and an external power supply, the valve body is provided with a brush plating surface corresponding to the valve seat sealing part, the frame is provided with a motor and a reduction mechanism, a spindle and a brush plating device, the motor and the reduction mechanism drive the spindle to rotate, the spindle is connected to the valve body through a flange, the spindle drives the valve body to rotate, the brush plating device is installed on the frame through a mounting plate, and the brush plating device includes a brush plating pen, a plating liquid box, an electro-cleaning liquid box, a cleaning liquid box, an activation liquid box and a liquid replacement control system, the positive pole of the external power supply is electrically connected to the brush plating pen, the negative pole of the external power supply is electrically connected to the spindle, one end of the brush plating pen extends to the inside of the valve body and is connected to a cotton bag sleeve that is against the brush plating surface, the brush plating pen is provided with an injection tube, and one end of the injection tube opens and extends to one end of the brush plating pen connected to the cotton bag sleeve.

[0006] The frame is provided with a gantry bracket and a Y-axis guide rail, the bottom of the gantry bracket is provided with an X-axis guide rail connected to the Y-axis guide rail, the gantry bracket is provided with a Z-axis guide rail, and the brush plating device is connected to the Z-axis guide rail on the gantry bracket through a mounting plate.

[0007] The brush plating devices are divided into two groups, and the gantry bracket is provided with two Z-axis guide rails for connecting the two groups of brush plating devices respectively.

[0008] At least one waste liquid collection box is arranged on the frame at a position below the corresponding mounting position of the valve body.

[0009] The outer wall of one end of the brush plating pen close to the cotton bag sleeve is protruded with at least one protruding ring.

[0010] The flange is provided with a positioning assembly for connecting the valve body, and the positioning assembly includes a connecting plate and a locking piece that passes through the connecting plate. A knob is provided at one end of the locking piece and a block is provided at the other end. The flange is provided with a groove for the block and the locking piece to extend into, and a locking groove is provided on an inner wall of one side of the groove for the block to slide into. The locking piece can be rotated by the knob to have a locking state in which the block is engaged with the locking groove and an unlocking state in which the block is detached from the locking groove. When the locking piece is in the locked state, the valve body is abutted against the flange by the connecting plate.

[0011] The inner wall of the locking groove near the groove opening is provided with an inclined surface, and the clamping block is provided with an oblique cone angle opposite to the inclination direction of the inclined surface. When the locking piece is in a locked state, the clamping block and the locking groove form an interference fit with the inclined surface through the oblique cone angle.

[0012] The positioning components are divided into several groups and are evenly distributed along the circumference of the valve body.

[0013] A connecting block for abutting against the peripheral side of the valve body is provided on the side of the connecting plate close to the flange. The end face of the connecting block close to the valve body is an arc surface. When the locking member is in a locked state, the arc surface abuts against the peripheral side of the valve body.

[0014] The groove passes through the flange, and the positioning assembly also includes a shell that is threadedly matched with the groove. The shell is located at the opening of the groove on the side away from the locking piece. A spring and a top ball are installed inside the shell. The spring presses the top ball toward the locking piece. The locking piece is close to the clamping block and is covered with a clamping ring that is engaged with the groove.

[0015] The beneficial effects of the present invention are as follows: the present invention connects the positive electrode of the external power supply to the brush plating pen as an anode, and the negative electrode of the external power supply to the main shaft as a cathode. The main shaft is connected to the valve body to realize power-on. When the brush plating pen is inserted into the valve body, the valve seat sealing part of the inner wall can be brush plated to realize local brush plating of the inner hole. A series of components used in the brush plating process, such as the brush plating pen, plating liquid box, electro-cleaning liquid box, cleaning liquid box, activation liquid box and liquid replacement control system, are all installed on the frame through a disc, with a compact structure and convenient processing. The main shaft driven by the motor and the reduction mechanism drives the valve body to rotate, and the liquid injection pipe of the brush plating pen transports the plating liquid to the cotton bag. The cotton bag is soaked with the plating liquid and the valve body rotates at a relative speed to produce surface movement and maintain appropriate pressure. The metal ions in the plating liquid diffuse to the brush plating surface under the action of the electric field force, obtain electrons on the surface and are reduced to metal ions. The metal ions are deposited and crystallized to form a plating layer. According to the extension of the brush plating time, the plating layer gradually thickens until the required thickness is reached. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 It is a structural schematic diagram of a local electric brush plating device of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the matching part between the brush plating pen and the valve body in the present invention;

[0019] Figure 3 It is a front schematic diagram of the present invention;

[0020] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0021] Figure 5 It is a cross-sectional schematic diagram of the matching position between the connecting block and the valve body in the present invention;

[0022] Figure 6 It is a structural schematic diagram of the valve body in the present invention;

[0023] In the figure, 1-valve body, 2-frame, 3-external power supply, 4-brush plating surface, 5-motor and reduction mechanism, 6-spindle, 7-flange, 8-mounting plate, 9-brush plating pen, 10-plating liquid box, 11-electric cleaning liquid box, 12-cleaning liquid box, 13-activation liquid box, 14-liquid replacement control system, 15-cotton bag, 16-liquid injection pipe, 17-gantry bracket, 18-Y-axis guide, 19-X-axis guide, 20-Z-axis guide, 21-waste liquid collection box, 22-convex ring, 23-connecting plate, 24-locking piece, 25-knob, 26-block, 27-groove, 28-locking groove, 29-inclined surface, 30-oblique cone angle, 31-connecting block, 32-arc surface, 33-housing, 34-spring, 35-top ball, 36-retaining ring. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0026] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0027] like Figures 1 to 6 As shown, an embodiment of the present invention is a local brush plating device, which is used for brush plating the valve seat sealing part inside the valve body 1, including a frame 2 and an external power supply 3. The valve body 1 is provided with a brush plating surface 4 corresponding to the valve seat sealing part. The frame 2 is provided with a motor and a reduction mechanism 5, a main shaft 6 and a brush plating device. The motor and the reduction mechanism 5 drive the main shaft 6 to rotate. The main shaft 6 is connected to the valve body 1 through a flange 7. The main shaft 6 drives the valve body 1 to rotate. The brush plating device is installed on the frame 2 through a mounting plate 8. The brush plating device includes a brush plating pen 9, a plating liquid box 10, an electro-cleaning liquid box 11, a cleaning liquid box 12, an activation liquid box 13 and a liquid exchange control system 14, the positive pole of the external power supply 3 is electrically connected to the brush plating pen 9, the negative pole of the external power supply 3 is electrically connected to the main shaft 6, one end of the brush plating pen 9 extends to the inside of the valve body 1 and is connected to a cotton bag 15 that is against the brush plating surface 4, and an injection tube 16 is provided inside the brush plating pen 9, and one end of the injection tube 16 opens and extends to one end of the brush plating pen 9 connected to the cotton bag 15.

[0028] The beneficial effects of such an arrangement are as follows. In the present invention, the positive electrode of an external power supply is connected to the brush plating pen as an anode, and the negative electrode of the external power supply is connected to the spindle as a cathode. The spindle is connected to the valve body to realize power-on. When the brush plating pen is inserted into the valve body, the valve seat sealing part of the inner wall can be brush plated to realize local brush plating of the inner hole. A series of components used in the brush plating process, such as the brush plating pen, plating liquid box, electro-cleaning liquid box, cleaning liquid box, activation liquid box and liquid replacement control system, are all installed on the frame through a disc, with a compact structure and convenient processing. The spindle driven by the motor and the reduction mechanism drives the valve body to rotate, and the liquid injection pipe of the brush plating pen transports the plating liquid to the cotton bag. The cotton bag is soaked with the plating liquid and the valve body rotates at a relative speed to produce surface movement and maintain appropriate pressure. The metal ions in the plating liquid diffuse to the brush plating surface under the action of the electric field force, obtain electrons on the surface and are reduced to metal ions. The metal ions are deposited and crystallized to form a coating. According to the extension of the brush plating time, the coating gradually thickens until the required thickness is reached.

[0029] It is further configured that a gantry bracket 17 and a Y-axis guide rail 18 are provided on the frame 2, an X-axis guide rail 19 connected to the Y-axis guide rail 18 is provided at the bottom of the gantry bracket 17, a Z-axis guide rail 20 is provided on the gantry bracket 17, and the brush plating device is connected to the Z-axis guide rail 20 on the gantry bracket 17 via a mounting plate 8.

[0030] The beneficial effects of this arrangement are as follows: Figure 1 As shown in the coordinate system, the position of the brush plating device can be adjusted at will through the X-axis guide, Y-axis guide and Z-axis guide. The three-axis directions can be adjusted at will, with high mobility and adaptability to valve bodies of different sizes.

[0031] It is further arranged that the brush plating device is provided in two groups, and the gantry support 17 is provided with two Z-axis guide rails 20 for connecting the two groups of brush plating devices respectively.

[0032] The beneficial effects of this arrangement are as follows: the two sets of brush plating devices improve work efficiency.

[0033] It is further provided that at least one waste liquid collection box 21 is provided on the frame 2 at a position below the valve body 1 .

[0034] The beneficial effect of such an arrangement is as follows: the waste liquid collection box is placed below the valve body installation position to facilitate the collection of waste liquid.

[0035] It is further provided that at least one protruding ring 22 is protruded from the outer wall of one end of the brush plating pen 9 close to the cotton bag 15 .

[0036] The beneficial effects of such arrangement are as follows: the structural strength of the brush plating pen is improved by the convex ring, and the stability during brush plating is greatly improved.

[0037] It is further configured that the flange 7 is provided with a positioning assembly for connecting the valve body 1, the positioning assembly includes a connecting plate 23 and a locking member 24 passing through the connecting plate 23, one end of the locking member 24 is provided with a knob 25 and the other end is provided with a block 26, the flange 7 is provided with a groove 27 for the block 26 and the locking member 24 to extend into, and the inner wall of one side of the groove 27 is provided with a locking groove 28 for the block 26 to slide into, and the locking member 24 is rotated by the knob 25 to have a locking state in which the block 26 is engaged with the locking groove 28 and an unlocking state in which the block 26 is disengaged from the locking groove 28, and when the locking member 24 is in the locked state, the valve body 1 is abutted against the flange 7 by the connecting plate 23.

[0038] The beneficial effects of such a setting are as follows: the valve body is abutted against the flange through the connecting plate, and the connecting plate cooperates with the flange through a locking piece. The locking piece can be rotated by a knob, and when the locking piece is rotated, the block at the other end slides into the locking groove in the groove to achieve clamping and fixing. Locking or unlocking can be achieved by simply rotating the locking piece. The operation is convenient and the locking effect is good.

[0039] It is further configured that an inner wall of the locking groove 28 on one side close to the opening of the groove 27 is provided with an inclined surface 29, and the clamping block 26 is provided with an oblique cone angle 30 opposite to the inclination direction of the inclined surface 29. When the locking member 24 is in a locked state, the clamping block 26 and the locking groove 28 form an interference fit with the inclined surface 29 through the oblique cone angle 30.

[0040] The beneficial effect of such a configuration is as follows: the inclined surface and the oblique cone angle form an interference fit, thereby improving the firmness of the engagement between the clamping block and the locking groove.

[0041] It is further provided that the positioning components are divided into a plurality of groups and are evenly distributed along the circumference of the valve body 1 .

[0042] The beneficial effects of such a configuration are as follows: the force is evenly distributed, and the tightness of the positioning assembly connecting the valve body to the flange is further improved.

[0043] It is further configured that a connecting block 31 for abutting against the peripheral side of the valve body 1 is provided on the side surface of the connecting plate 23 close to the flange 7, and an end surface of the connecting block 31 close to the valve body 1 is an arc surface 32. When the locking member 24 is in a locked state, the arc surface 32 abuts against the peripheral side of the valve body 1.

[0044] The beneficial effects of such a configuration are as follows: by the connection block abutting against the circumferential side of the valve body, the circumferential friction force is increased, the connection strength is further improved, and the arc surface will not affect the rotation of the connection block when unlocking.

[0045] It is further configured that the groove 27 passes through the flange 7, and the positioning assembly also includes a shell 33 threadedly matched with the groove 27, the shell 33 is located at the opening of the groove 27 on the side away from the locking member 24, and a spring 34 and a top ball 35 are installed inside the shell 33. The spring 34 presses the top ball 35 toward the locking member 24, and the end of the locking member 24 close to the block 26 is covered with a retaining ring 36 that is engaged with the groove 27.

[0046] The beneficial effects of such a configuration are as follows: the housing is threadedly connected to the groove of the flange and is detachable, and the clearance between the card block and the locking groove can be adjusted; a spring and a top ball are installed in the housing; when the locking piece is in an unlocked state, it moves toward the outside of the groove under the action of the spring and the top ball, thereby achieving a labor-saving and quick unlocking effect; the retaining ring is used to block the card block, and when the locking piece is in an unlocked state, the card block is prevented from being pushed out of the groove by the spring and the top ball, thereby preventing parts from being lost.

[0047] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A local brush plating device for brush plating a valve seat sealing portion inside a valve body (1), comprising a frame (2) and an external power supply (3), wherein the valve body (1) is provided with a brush plating surface (4) corresponding to the valve seat sealing portion, and characterized in that: The frame (2) is provided with a motor and a reduction mechanism (5), a main shaft (6) and an electric brush plating device. The motor and the reduction mechanism (5) drive the main shaft (6) to rotate. The main shaft (6) is connected to the valve body (1) via a flange (7). The main shaft (6) drives the valve body (1) to rotate. The electric brush plating device is installed on the frame (2) via a mounting plate (8). The electric brush plating device comprises a brush plating pen (9), a plating liquid box (10), an electric cleaning liquid box (11), a cleaning liquid box (12), An activation liquid box (13) and a liquid replacement control system (14), wherein the positive electrode of the external power source (3) is electrically connected to the brush plating pen (9), and the negative electrode of the external power source (3) is electrically connected to the main shaft (6); one end of the brush plating pen (9) extends to the inside of the valve body (1) and is connected to a cotton bag (15) that abuts against the brush plating surface (4); an injection tube (16) is provided inside the brush plating pen (9), and one end of the injection tube (16) is opened and extends to one end of the brush plating pen (9) connected to the cotton bag (15); The flange (7) is provided with a positioning assembly for connecting the valve body (1), the positioning assembly comprising a connecting plate (23) and a locking member (24) penetrating the connecting plate (23), one end of the locking member (24) is provided with a knob (25) and the other end is provided with a clamping block (26), the flange (7) is provided with a groove (27) for the clamping block (26) and the locking member (24) to extend into, and one side inner wall of the groove (27) is provided with a locking groove (28) for the clamping block (26) to slide into, the locking member (24) is rotated by the knob (25) to have a locking state in which the clamping block (26) is clamped with the locking groove (28) and an unlocking state in which the clamping block (26) is separated from the locking groove (28), and when the locking member (24) is in the locked state, the valve body (1) is abutted against the flange (7) by the connecting plate (23); An inner wall of the locking groove (28) close to the opening of the groove (27) is provided with an inclined surface (29); the clamping block (26) is provided with an oblique cone angle (30) opposite to the inclination direction of the inclined surface (29); when the locking member (24) is in a locked state, the clamping block (26) and the locking groove (28) form an interference fit through the oblique cone angle (30) and the inclined surface (29); The positioning components are in a plurality of groups and are evenly distributed along the circumference of the valve body (1); A connecting block (31) for abutting against the peripheral side of the valve body (1) is provided on the side surface of the connecting plate (23) close to the flange (7); an end surface of the connecting block (31) close to the valve body (1) is an arc surface (32); when the locking member (24) is in a locked state, the arc surface (32) abuts against the peripheral side of the valve body (1); The groove (27) passes through the flange (7). The positioning assembly also includes a shell (33) threadedly matched with the groove (27). The shell (33) is located at an opening on a side of the groove (27) away from the locking member (24). A spring (34) and a top ball (35) are installed inside the shell (33). The spring (34) presses the top ball (35) toward the locking member (24). The locking member (24) is provided with a retaining ring (36) that is engaged with the groove (27) at one end close to the clamping block (26).

2. A local brush plating device according to claim 1, characterized in that: The frame (2) is provided with a gantry support (17) and a Y-axis guide rail (18); an X-axis guide rail (19) connected to the Y-axis guide rail (18) is provided at the bottom of the gantry support (17); a Z-axis guide rail (20) is provided on the gantry support (17); and the brush plating device is connected to the Z-axis guide rail (20) on the gantry support (17) via a mounting plate (8).

3. A local brush plating device according to claim 2, characterized in that: The brush plating devices are in two groups, and the gantry support (17) is provided with two Z-axis guide rails (20) for connecting the two groups of brush plating devices respectively.

4. A local brush plating device according to claim 1, characterized in that: At least one waste liquid collection box (21) is provided on the frame (2) at a position below the mounting valve body (1).

5. The local brush plating equipment according to claim 1, characterized in that: The outer wall of one end of the brush plating pen (9) close to the cotton bag (15) is protruded with at least one protruding ring (22).

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