An Aluminum Alloy Partial Coating Repair Device and Method

Abstract

The present invention discloses an aluminum alloy partial film layer repair device and method, belonging to the technical field of film layer repair. It includes an operating rod and a repair head. The repair head is installed at the first end of the operating rod. The repair head includes: a frustum block and an annular base. The annular base is provided with a chute. The frustum block is limited and slidably connected in the chute. A second spring is fixedly connected between the bottom end of the frustum block and the bottom wall of the chute. The annular base is circumferentially slidably connected with a plurality of sliding blocks along the axial direction of the annular base. The sliding blocks are limited and slidably connected to the annular base through third springs. The sliding blocks are in contact with the side wall of the frustum block. A dust-free cloth is fixedly connected to the first end of the operating rod through an elastic band. The dust-free cloth surrounds the repair head. The present invention can realize the arbitrary diameter adjustment of the repair head, so as to arbitrarily adjust the contact area with the workpiece to be repaired, ensure the uniformity of repair, and is convenient for adjustment.

Description

Technical Field

[0001] The invention belongs to the technical field of film layer repair, and particularly relates to a device and method for repairing a local film layer of aluminum alloy. Background Art

[0002] At present, more and more high-quality aluminum alloy workpieces are used in the semiconductor equipment component industry. During the surface treatment process of these aluminum alloy workpieces, some workpieces have local surface bumps, abrasions, or insufficient treatment, and need to be repaired locally. In the prior art, usually, the workpiece to be repaired is connected to the negative electrode of the power supply, and the brush plating pen is connected to the positive electrode of the power supply. The operator wears gloves and holds an aluminum rod wrapped with a dust-free cloth to make a slow circular motion in the area to be repaired. In order to facilitate the repair, aluminum rods with different diameters are used for circular motion according to the area of different repair areas. In the prior art, generally, different-diameter aluminum rods are replaced, which wastes time. Moreover, the aluminum rods are all finished products with fixed diameters, and they cannot fully adapt to the area of the repair area during adjustment, and the adjustment is troublesome. Therefore, it is necessary to propose an aluminum alloy local film layer repair device that can realize the adjustment of any diameter of the aluminum rod to solve the above problems. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a device and method for repairing a local film layer of aluminum alloy, which are used to solve the problem that the aluminum rod for repairing aluminum alloy in the prior art cannot realize the adjustment of any diameter.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] The present invention provides an aluminum alloy local film layer repair device, including: an operating rod and a repair head. The repair head is installed at the first end of the operating rod. The repair head includes: a frustum block and an annular base. The annular base is provided with a chute. The frustum block is slidably connected in the chute in a limited manner. A second spring is fixedly connected between the bottom end of the frustum block and the bottom wall of the chute. The annular base is slidably connected with a plurality of sliding blocks in the circumferential direction along the axis direction of the annular base. The sliding blocks are slidably connected to the annular base in a limited manner through a third spring. The sliding blocks are in contact with the side wall of the frustum block. The frustum block can slide along the axis direction of the chute to enable the plurality of sliding blocks to expand or contract circumferentially; a dust-free cloth for closing the liquid storage cavity is fixedly connected to the first end of the operating rod through an elastic band, and the dust-free cloth surrounds the repair head.

[0006] Further, a contraction plate is fixedly connected between every two of the plurality of sliding blocks. The contraction plate includes a plurality of connecting plates, and the plurality of connecting plates are slidably connected to each other in a staggered manner.

[0007] Further, the shrinkage plate is L-shaped. The first end of the shrinkage plate is arranged along the arc-shaped side wall of the sliding block, and the second end of the shrinkage plate is located on the bottom wall of the annular base.

[0008] Further, the annular base includes: an annular plate and fixing blocks. A plurality of the fixing blocks are circumferentially arranged along the axial direction of the annular plate. A sliding groove for the sliding block to slide is formed between every two of the fixing blocks. An installation groove is formed in the side wall of the fixing block, and the third spring is installed in the installation groove.

[0009] Further, a liquid storage cavity for storing electrolyte is arranged inside the operating rod. The liquid storage cavity penetrates through the operating rod. A limiting cavity communicated with the liquid storage cavity is arranged at the first end of the operating rod. A round bead for blocking the liquid storage cavity is limitedly installed in the limiting cavity. The round bead is movably connected to the inside of the liquid storage cavity through a first spring. The round bead can slide along the axial direction of the operating rod to open or block the liquid storage cavity; the repair head is ball-jointedly connected to the end of the round bead away from the operating rod.

[0010] Further, an insulating sleeve is installed on the outer peripheral wall of the operating rod.

[0011] Further, a refrigerating chamber is arranged inside the operating rod. The refrigerating chamber surrounds the liquid storage cavity, and a condenser is installed in the refrigerating chamber.

[0012] The present invention provides an aluminum alloy local film layer repair method, including the following steps:

[0013] S1: Place the workpiece to be repaired on the workbench, and load 10 - 100 mL of 20% sulfuric acid electrolyte into the liquid storage cavity of the operating rod;

[0014] S2: Electrically connect the positive electrode of the movable rectifier to the operating rod, and the negative electrode to the workpiece to be repaired. Start the condenser to refrigerate the sulfuric acid electrolyte, and control the temperature of the sulfuric acid electrolyte at -1 to 1°C;

[0015] S3: Turn on the rectifier to the regulated voltage state, set the voltage to 20 - 40V, start the rectifier, and perform a circular operation on the area to be repaired of the workpiece by moving the operating rod; wherein, when performing the circular operation, apply a corresponding pressure to the operating rod according to the area of the area to be repaired of the workpiece to adjust the contact area between the repair head and the area to be repaired of the workpiece.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention can automatically adjust the contact area between the repair head and the workpiece to be repaired by pressing the operating rod, and can achieve any diameter adjustment of the repair head, so as to arbitrarily adjust the contact area with the workpiece to be repaired, ensuring the uniformity of repair. The diameter adjustment can be achieved by pressing, which is convenient for adjustment. By setting an elastic band, the expansion of the dust-free cloth during the adjustment of the repair head is ensured, and the dust-free cloth is prevented from being damaged.

[0018] Other advantages, objectives and features of the present invention will be described in the following specification, and to some extent will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. Brief Description of the Drawings

[0019] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the following drawings are provided for illustration:

[0020] Figure 1 It is a cross-sectional view of the overall structure of an embodiment of the present invention;

[0021] Figure 2 It is a schematic structural view of the repair head of an embodiment of the present invention;

[0022] Figure 3 It is a top-down cross-sectional view of the repair head of an embodiment of the present invention;

[0023] Figure 4 It is an installation schematic view of the repair head of an embodiment of the present invention;

[0024] Figure 5 It is an installation schematic view of the dust-free cloth of an embodiment of the present invention;

[0025] Figure 6 It is a flow chart of an embodiment of the present invention.

[0026] The reference numerals in the drawings are as follows: 1, operating rod; 101, liquid storage cavity; 102, limiting cavity; 2, ball; 201, first spring; 3, repair head; 301, frustum block; 302, annular base; 303, sliding groove; 304, second spring; 305, sliding block; 306, third spring; 307, contraction plate; 308, connecting plate; 309, annular plate; 310, fixing block; 311, sliding slot; 312, installation slot; 4, elastic band; 5, dust-free cloth. Detailed Description of the Invention

[0027] Such as Figures 1 to 6As shown in the figure, the present invention provides a device for repairing a local film layer of an aluminum alloy, comprising: an operating rod 1, wherein a liquid storage cavity 101 for storing electrolyte is arranged inside the operating rod 1, the liquid storage cavity 101 penetrates through the operating rod 1, a limiting cavity 102 communicated with the liquid storage cavity 101 is arranged at a first end of the operating rod 1, a round bead 2 for blocking the liquid storage cavity 101 is installed in the limiting cavity 102 in a limited manner, the round bead 2 is movably connected to the liquid storage cavity 101 through a first spring 201, and the round bead 2 can slide along the axis direction of the operating rod 1 to open or block the liquid storage cavity 101; a repair head 3 for repairing a workpiece is ball-jointed to the end of the round bead 2 away from the operating rod 1, a dust-free cloth 5 for closing the liquid storage cavity 101 is fixedly connected to the first end of the operating rod 1 through an elastic band 4, and the dust-free cloth 5 is arranged to surround the repair head 3;

[0028] The repair head 3 comprises: a frustum block 301 and an annular base 302, the frustum block 301 is ball-jointed to the round bead 2, the annular base 302 is provided with a sliding groove 303, the frustum block 301 is slidably connected to the sliding groove 303 in a limited manner, a second spring 304 is fixedly connected between the bottom end of the frustum block 301 and the bottom wall of the sliding groove 303, the annular base 302 is circumferentially slidably connected with a plurality of sliding blocks 305, the sliding blocks 305 are slidably connected to the annular base 302 through third springs 306, the sliding blocks 305 are in contact with the side wall of the frustum block 301, and the frustum block 301 can slide along the axis direction of the sliding groove 303 to enable the plurality of sliding blocks 305 to expand or contract circumferentially.

[0029] The working principle of the above technical solution: As Figure 1, in the initial state, the ball 2 blocks the liquid storage cavity 101 under the action of the first spring 201, the electrolyte cannot flow out of the liquid storage cavity 101, and the slider 305 does not extend out of the annular base 302. The second spring 304 and the third spring 306 are in a normal state, and the frustum block 301 has not completely slid into the chute 303; when locally repairing an aluminum alloy workpiece, operate the operating rod 1 to make the repair head 3 located at the place to be repaired on the aluminum alloy workpiece, and press the operating rod 1 forcefully. Due to the force on the repair head 3, the ball 2 slides in the limiting cavity 102. At this time, the first spring 201 is compressed, and the sliding of the ball 2 opens the liquid storage cavity 101. Thus, the electrolyte in the liquid storage cavity 101 slowly flows out of the limiting cavity 102 onto the repair head 3 and then flows onto the dust-free cloth 5. Slowly make a circular motion at the place to be repaired on the aluminum alloy while pressing the operating rod 1; when it is necessary to adjust the diameter of the repair head 3 according to the repair area, continue to press the operating rod 1. At this time, the frustum block 301 slides along the chute 303. At this time, the second spring 304 is compressed, and the small-diameter end of the frustum block 301 is set away from the ball 2. When the frustum block 301 slides, the inclined side squeezes the slider 305, causing the plurality of sliders 305 to expand circumferentially, thereby expanding the dust-free cloth 5 and increasing the contact area between the repair head 3 and the workpiece to be repaired. When the dust-free cloth 5 expands, the elastic band 4 is stretched. When the repair is completed, take out the operating rod 1. Under the action of gravity and the second spring 304, the annular base 302 drives the frustum block 301 to slide in the reverse direction. At this time, the slider 305 returns under the action of the third spring 306; and the ball 2 returns to block the liquid storage cavity 101, preventing the electrolyte from flowing out.

[0030] The beneficial effects of the above technical solution: By sliding the ball 2, the automatic outflow and blocking of the electrolyte are realized by pressing the operating rod 1, avoiding the process of repeatedly dipping the electrolyte, avoiding corrosive damage to the operator in case of improper operation, saving manpower and ensuring personnel safety; and avoiding the problem that the amount of dipped electrolyte is difficult to control, resulting in uneven film thickness at the local part of the workpiece to be repaired; by pressing the operating rod 1, the contact area between the repair head 3 and the workpiece to be repaired can be automatically adjusted, and any diameter adjustment of the repair head 3 can be realized, so as to arbitrarily adjust the contact area with the workpiece to be repaired, ensuring the uniformity of the repair. The diameter adjustment can be realized by pressing, saving manpower; by setting the third spring 306 and the second spring 304, the automatic return of the slider 305 after expansion and the frustum block 301 after compression when no repair is needed is realized; by setting the elastic band 4, the expansion of the dust-free cloth 5 when adjusting the repair head 3 is ensured, avoiding damage to the dust-free cloth 5; through the ball joint of the ball 2 and the frustum block 301, during operation, the operating rod 1 can be operated in any direction, avoiding the limitation of vertical operation; an arc matching the frustum block 301 is provided on the side of the slider 305 close to the frustum block 301 to facilitate the sliding of the slider 305.

[0031] In an embodiment of the present invention, the side of the sliding block 305 away from the chute 303 is arc-shaped. A contraction plate 307 is fixedly connected between every two of the plurality of sliding blocks 305. The contraction plate 307 includes a plurality of connecting plates 308. The plurality of connecting plates 308 are slidably connected to each other in a staggered manner. The connecting plate 308 is provided with an empty slot, and one of the connecting plates 308 is slidably connected in the empty slot of the adjacent connecting plate 308.

[0032] The working principle of the above technical solution: As Figure 3 , when the sliding block 305 slides in a direction away from the chute 303, the plurality of sliding blocks 305 slide synchronously. Since the sliding of the sliding block 305 causes the distance between the outer peripheral wall of the sliding block 305 and the center of the chute 303 to increase, the diameter of the outer ring formed by the sliding blocks 305 increases, and the gap between every two of the sliding blocks 305 increases, thereby driving the plurality of connecting plates 308 to slide, so that the contraction plate 307 expands. When the sliding block 305 slides in a direction close to the chute 303, the contraction plate 307 contracts under the action of the return extrusion of the sliding block 305.

[0033] The beneficial effect of the above technical solution: By setting the contraction plate 307, when the plurality of sliding blocks 305 slide, the sealing of the ring formed by the plurality of sliding blocks 305 is ensured, and the integrity of the dust-free cloth 5 wrapping the repair head 3 is ensured when the repair head 3 performs circular repair on the workpiece, avoiding affecting the repair effect due to the defects between every two of the sliding blocks 305.

[0034] In an embodiment of the present invention, the contraction plate 307 is L-shaped. The first end of the contraction plate 307 is arranged along the arc-shaped side wall of the sliding block 305, and the second end of the contraction plate 307 is slidably connected to the bottom wall of the annular base 302.

[0035] The working principle of the above technical solution: When the plurality of sliding blocks 305 slide, the first end of the contraction plate 307 is used to ensure the sealing along the arc-shaped circumferential wall of the sliding block 305, and the second end of the contraction plate 307 is used to ensure the integrity of the contact side between the sliding block 305 and the workpiece to be repaired after the sliding block 305 slides. As Figure 1 and 4 , the contact surface between the repair head 3 and the workpiece can be arc-shaped. The second end of the contraction plate 307 is arranged in a shape that fits the arc-shaped bottom wall of the repair head 3, and the integrity of the arc-shaped wall at the bottom side of the repair head 3 is ensured through the contraction plate 307.

[0036] The beneficial effect of the above technical solution: By setting the contraction plate 307 to be L-shaped, the sealing of the bottom wall and the side wall of the repair head 3 is ensured after the sliding block 305 slides and expands, avoiding affecting the repair effect due to the defects of the side wall and the bottom wall caused by the sliding of the sliding block 305.

[0037] In an embodiment of the present invention, the annular base 302 includes: an annular plate 309. A plurality of fixing blocks 310 are fixedly connected to the end of the annular plate 309 away from the frustum block 301. A sliding groove 311 for the sliding block 305 to slide is formed between every two of the fixing blocks 310. The sliding groove 311 penetrates through the annular plate 309 and is arranged away from the frustum block 301. An installation groove 312 is formed in the side wall of the fixing block 310, and the third spring 306 is installed in the installation groove 312.

[0038] The working principle and beneficial effects of the above technical solution: As Figure 1 , the sliding groove 311 penetrates through the annular plate 309 and is arranged away from the frustum block 301. After the shrinkage plate 307 is installed on the sliding block 305, the bottom wall of the shrinkage plate 307 and the bottom wall of the fixing block 310 are on the same plane, ensuring the flatness of the bottom wall of the repair head 3 during the expansion or contraction of the sliding block 305, ensuring the flatness of the contact surface between the repair head 3 and the workpiece during the repair process, and improving the repair effect.

[0039] In an embodiment of the present invention, an insulating sleeve is installed on the outer peripheral wall of the operating rod 1.

[0040] The working principle and beneficial effects of the above technical solution: When manually operating the operating rod 1, it ensures the safety of the operator.

[0041] In an embodiment of the present invention, a refrigerating chamber is provided inside the operating rod 1. The refrigerating chamber surrounds the liquid storage chamber 101, and a condenser is installed in the refrigerating chamber.

[0042] The working principle of the above technical solution: When repairing a workpiece, the condenser is started, and the electrolyte in the liquid storage chamber 101 is cooled by the condenser, and the temperature of the electrolyte is controlled at -1 to 1 °C.

[0043] The beneficial effects of the above technical solution: By setting the condenser, manual operation is reduced, and when the temperature of the electrolyte is -1 to 1 °C, the structure of the repair film layer is denser, which can effectively improve the corrosion resistance and wear resistance.

[0044] The present invention provides an aluminum alloy local film layer repair method, including the following steps:

[0045] S1: Place the workpiece to be repaired on the workbench, and load 1*-100 mL of 20% sulfuric acid electrolyte into the liquid storage chamber 101 of the operating rod 1;

[0046] S2: Electrically connect the positive pole of the movable rectifier to the operating rod 1 and the negative pole to the workpiece to be repaired. Start the condenser to refrigerate the sulfuric acid electrolyte, and control the temperature of the sulfuric acid electrolyte at -1 to 1 °C;

[0047] S3: Turn on the rectifier to the regulated voltage state, set the voltage to 20 - 40V, start the rectifier, and perform a circular operation on the area to be repaired of the workpiece by moving the operating rod 1; among them, when performing the circular operation, apply an appropriate pressure to the operating rod 1 according to the area of the area to be repaired of the workpiece to adjust the contact area between the repair head 3 and the area to be repaired of the workpiece.

[0048] The working principle and beneficial effects of the above technical solution are as follows Figure 6 , through the design of the above steps, the workpiece to be repaired does not need to be immersed in the electrolyte for repair, avoiding the leakage of the electrolyte from damaging the original film layer, reducing the usage amount of the electrolyte, and lowering the production cost.

[0049] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An aluminum alloy partial film layer repair device, characterized in that, Comprising: A joystick and a repair head, the repair head being mounted at the first end of the joystick, the repair head including: a frustum block and an annular base, the annular base being provided with a sliding groove, the frustum block being limit slidably connected within the sliding groove, a second spring being fixedly connected between the bottom end of the frustum block and the bottom wall of the sliding groove, the annular base being circumferentially slidably connected with a plurality of sliding blocks, the sliding blocks being limit slidably connected to the annular base through third springs, the sliding blocks being in contact with the side wall of the frustum block, the frustum block being capable of sliding along the axis direction of the sliding groove so that the plurality of sliding blocks expand or contract circumferentially; the first end of the joystick is fixedly connected with a dust-free cloth that closes the liquid storage cavity, and the dust-free cloth surrounds the repair head.

2. The aluminum alloy partial film layer repair device according to claim 1, characterized in that: A contraction plate is fixedly connected between every two of the plurality of sliding blocks, the contraction plate including multiple connecting plates, and the multiple connecting plates are slidably connected to each other with a dislocation between every two.

3. The aluminum alloy partial film layer repair device according to claim 2, characterized in that: The contraction plate is L-shaped, the first end of the contraction plate is arranged along the arc-shaped side wall of the sliding block, and the second end of the contraction plate is located on the bottom wall of the annular base.

4. The aluminum alloy partial film layer repair device according to claim 1, characterized in that: The annular base includes: an annular plate and fixing blocks, the plurality of fixing blocks are circumferentially arranged along the axis direction of the annular plate, a sliding groove for the sliding of the sliding blocks is formed between every two of the fixing blocks, and an installation groove is formed in the side wall of the fixing block, and the third spring is installed in the installation groove.

5. The aluminum alloy partial film layer repair device according to claim 1, wherein: A liquid storage cavity for storing electrolyte is arranged inside the joystick, the liquid storage cavity runs through the joystick, a limiting cavity communicated with the liquid storage cavity is arranged at the first end of the joystick, a round bead for plugging the liquid storage cavity is limit installed in the limiting cavity, the round bead is movably connected to the inside of the liquid storage cavity through a first spring, the round bead is capable of sliding along the axis direction of the joystick to open or plug the liquid storage cavity; the repair head is ball-hinged to the end of the round bead away from the joystick.

6. The aluminum alloy partial film layer repair device according to claim 1, characterized in that: An insulating sleeve is installed on the outer peripheral wall of the joystick.

7. The aluminum alloy partial film layer repair device according to claim 1, characterized in that: A refrigerating chamber is arranged inside the joystick, the refrigerating chamber surrounds the liquid storage cavity, and a condenser is installed in the refrigerating chamber.

8. The repair method of the aluminum alloy partial film layer repair device according to any one of claims 1-7, characterized in that: Including the following steps: S1: Place the workpiece to be repaired on the workbench, and load 10 - 100 mL of 20% sulfuric acid electrolyte into the liquid storage cavity of the joystick; S2: Electrically connect the positive electrode of the movable rectifier to the joystick, and the negative electrode to the workpiece to be repaired, start the condenser to refrigerate the sulfuric acid electrolyte, and control the temperature of the sulfuric acid electrolyte to be -1~1°C; S3: Turn on the rectifier to the regulated voltage state, set the voltage to 20 - 40V, start the rectifier, and perform a circular operation on the area to be repaired of the workpiece by moving the joystick; wherein, when performing the circular operation, apply a corresponding pressure to the joystick according to the area of the area to be repaired of the workpiece to adjust the contact area between the repair head and the area to be repaired of the workpiece.

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