Electroplating drum

Abstract

The application discloses a kind of electroplating drums, it is related to electroplating drum technical field, including hollow cylinder of columnar encircling constitution, hole is set in cylinder, cylinder is divided into multiple plate bodies in circumferential direction, and at least one plate body is detachably arranged, the length direction of the inner surface of plate body is equipped with limit strip in both ends, cleaning plate is slidably arranged between two groups of limit strips, and the protrusion is equipped with on the side of cleaning plate adhering to plate body, cleaning plate moves in the both ends of plate body width direction when rolling with cylinder, protrusion is pressed into hole and cleans blockage when moving, this electroplating drum, by setting the cleaning plate that can slide under the action of gravity in drum, the protrusion is acted into hole by the sliding of cleaning plate, so as to remove the blockage in hole, avoid affecting the replacement of electroplating solution inside and outside cylinder, so as to affect the stability of product electroplating.

Description

Technical Field

[0001] This invention relates to the field of electroplating roller technology, specifically to an electroplating roller. Background Technology

[0002] Electroplating is the process of depositing a thin layer of other metals or alloys onto the surface of certain metals using the principle of electrolysis. Electroplating is mainly divided into rack plating, barrel plating, and brush plating according to the electroplating operation method. Among them, barrel plating uses a roller to carry the product and electroplating the product in the process of continuous rolling.

[0003] Roller electroplating is generally suitable for small to medium-sized products. The diameter of the roller is smaller than that of the product, usually quite small. During the electroplating process, the following sources can cause blockage of the holes on the roller: solid suspended matter in the plating solution (anodine mud, additives, dust in the environment, and equipment wear, etc.), fine chips or burrs generated by collision and friction of the workpiece, and burrs generated during the manufacturing of the roller holes, etc. During operation, the blockage of the holes will affect the replacement of the electroplating solution inside and outside the roller. If the replacement efficiency is low, it will affect the electroplating quality and efficiency of the product. In addition, the deposition of plating metal and the formation of some insoluble salts or compounds in the electroplating solution at the holes of the roller will further lead to blockage of the holes.

[0004] Although existing electroplating equipment is cleaned periodically, the continuous clogging of the drum's holes during electroplating causes a decline in the exchange efficiency of the electroplating solution between the inside and outside of the drum within a cycle. This results in variations in the surface quality of different batches of electroplated products. Therefore, we propose an electroplating drum design. Summary of the Invention

[0005] The purpose of this invention is to provide an electroplating roller to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electroplating roller, comprising a hollow cylindrical body formed in a columnar spiral shape, with holes opened on the cylindrical body, the cylindrical body being divided into multiple plates at intervals in the circumferential direction, and at least one of the plates being detachable, with limiting strips provided at both ends of the inner surface of the plate in the length direction, and a cleaning plate slidably provided between the two sets of limiting strips, the cleaning plate having a protrusion on one side of the plate, the cleaning plate moving at both ends in the width direction of the plate as it rolls with the cylindrical body, the protrusion being subjected to pressure during movement and entering the holes to clean blockages.

[0007] Preferably, the two sides of the cleaning plate in the thickness direction extend from the small end to the large end and are inclined outward. When the cylinder rotates, the small end of the cleaning plate moves downward under the action of gravity, and the protrusion on the large end side contacts the hole on the cylinder. The inclination angle of the side of the cleaning plate closer to the inner surface of the plate is greater than the inclination angle of the opposite side, so that when the cleaning plate falls, the small end is pressed away from the inner surface of the plate, and the protrusion on the large end side is pressed.

[0008] Preferably, the maximum lateral distance between the large end of the cleaning plate and the protrusion is greater than the vertical distance between the inner top wall of the limiting strip and the inner surface of the plate. During the process of the small end of the cleaning plate deflecting in the opposite direction of the pressure, the two edges of the large end and the protrusion respectively adhere to the inner surface of the plate and the inner top wall of the limiting strip.

[0009] Preferably, the density of the large end of the cleaning plate and the overall density of the cleaning plate are greater than the density of the electroplating solution, while the density of the small end of the cleaning plate is less than the density of the electroplating solution.

[0010] Preferably, the end face of the cleaning plate along its length is provided with a guide slider, which is located at the small end of the cleaning plate. A guide plate is provided on the limiting strip, and the side wall of the guide plate that contacts the guide slider is wavy. The wavy undulations on the guide plate are adapted to the corresponding holes on the downward path of the cleaning plate.

[0011] Preferably, it protrudes in a peak shape.

[0012] Preferably, a locking element is provided between the small end of the cleaning plate and the limiting strip. After the cleaning plate falls, it is limited by the locking element so that the cleaning plate does not detach when the plate body and the horizontal direction have not reached a predetermined angle.

[0013] Preferably, the engaging component is a flange provided at the small end of the cleaning plate, and an inclined guide surface is provided within the limiting strip. After the cleaning plate falls, the flange contacts and is engaged with the inclined guide surface. After the plate rotates to reach the tilt angle, it disengages under the action of gravity.

[0014] Preferably, the engaging component is a flange provided at the small end of the cleaning plate, and a stop is provided on the inner surface of the plate. When the cleaning plate falls, the flange passes over the stop to the other side and stops, and after the plate rotates to the tilt angle, it disengages under the action of gravity.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention provides a cleaning plate that slides under gravity inside the drum. The sliding of the cleaning plate causes it to protrude into the holes, thereby clearing the blockages in the holes and preventing interference with the replacement of the electroplating solution inside and outside the drum, which would otherwise affect the stability of the electroplating of the product.

[0017] The cleaning plate of the present invention is provided with large and small ends, which can generate a certain pressure on the protrusion when sliding, so that it can be better used to clean the blockage and avoid the situation that it cannot be cleaned due to insufficient force or gets stuck.

[0018] The cleaning plate of the present invention can counteract the pressure on the plate body during the downward cleaning process under the action of the guide plate, and can release the pressure at the holes, thereby reducing the wear on the plate body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the plate structure;

[0021] Figure 3 for Figure 2 Enlarged schematic diagram of area A structure in the image;

[0022] Figure 4 This is a schematic diagram showing the rotation of the drum.

[0023] Figure 5 This is a structural diagram of the cleaning plate;

[0024] Figure 6 A schematic diagram of the end face structure of the cleaning plate;

[0025] Figure 7 A schematic diagram illustrating the action of the protrusions on the plate on the holes during cleaning.

[0026] Figure 8 A schematic diagram illustrating the state of the protrusions on the board being cleaned.

[0027] Figure 9 This is a schematic diagram showing the effect of a peak-shaped protrusion on a hole.

[0028] Figure 10 This is a schematic diagram showing one embodiment of the snap-fit ​​connector.

[0029] Figure 11 This is a schematic diagram of another embodiment of the locking component.

[0030] In the diagram: 1-Cylinder; 101-Plate; 2-Hole; 3-Limiting strip; 4-Cleaning plate; 5-Protrusion; 6-Guide slider; 7-Guide plate; 8-Flange; 9-Inclined guide surface; 10-Stop; 401-Small end; 402-Large end; 4a-First inclined surface; 4b-Second inclined surface; 4c-Circular arc segment; 5a-Edge line; 1s-Boundary line. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This invention provides a technical solution: an electroplating roller, comprising a cylindrical hollow cylinder 1 with openings at both ends. The two ends of the cylinder 1 are connected to toothed plates, forming a closed loop. The toothed plates are connected to a drive mechanism to rotate the cylinder 1. The cylinder 1 is evenly divided into multiple plates 101 on its circumference, and at least one plate 101 is an independent individual and detachable to form an opening for easy loading and unloading of parts. Apart from the aforementioned independent plate 101, the remaining plates 101 can be integral or assembled as a whole. The cylinder shown in the illustration is a cylindrical body composed of six plates 101, but it could also have five or seven plates, etc. The illustrated cylinder is a regular polyhedron, but it could also be a cylinder with a circular cross-section. The plate 101 has several holes 2 for replacing the electroplating solution inside and outside the cylinder 1. Limiting strips 3 are fixedly connected to both ends of the length direction (i.e., the axial direction of the cylinder 1) of a single plate 101. The cross-section of the limiting strips 3 is L-shaped. The limiting strips 3 and the plate 101 form a track for the cleaning plate 4 to slide. That is, the cleaning plate 4 can slide from both ends of the width direction of the plate 101 under the restriction of the track. A protrusion 5 corresponding to the hole 2 is fixed on the side of the plate 101 that is in contact with the inner surface of the plate 101. When the cleaning plate 4 slides, the protrusion 5 enters the hole 2 for cleaning. The cleaning plate 4 changes position as it rolls inside the cylinder 1 and slides at both ends for cleaning under the action of gravity.

[0033] Specifically, such as Figure 4 As shown, when the cylinder 1 rotates clockwise, taking the lowest horizontal plate 101 as an example, when the workpiece is on the lowest plate 101 inside the cylinder 1, it contacts the cathode and is electroplated. At this time, the cleaning plate 4 is located on the left side of the plate 101 (because when the right plate 101 is in the state, the cleaning plate 4 falls to the left end due to gravity). The cleaning plate 4 itself has a certain mass. When the plate 101 is tilted at a small angle, it will not slide to the right due to friction. When it rotates to a predetermined angle, such as 45° (the setting of this angle depends on the mass of the cleaning plate 4 and the roughness of the friction surface, etc., and can be selectively set), when the workpiece has reached the adjacent plate 101, the cleaning plate 4 slides to the right. When sliding, the protrusion 5 enters the hole 2 under pressure for cleaning. During rotation, this process is continuously repeated.

[0034] See Figure 4 , Figure 5 and Figure 6 The cleaning plate 4 has an oblong end face, meaning its thickness differs at both ends in the width direction, resulting in a large end 402 and a small end 401. Figure 4 From a clockwise rotation perspective, the small end 401 is located at the front end in the direction of rotation, that is, in Figure 4 At the location of the thickened line segment, the cleaning plate 4 falls due to gravity, with the small end 401 facing downwards. Both sides of the cleaning plate 4 in the thickness direction are inclined surfaces due to the design of the large end 402 and the small end 401, namely the first inclined surface 4a and the second inclined surface 4b. The angle α between the first inclined surface 4a and the vertical direction is greater than the angle β between the second inclined surface 4b and the vertical direction, so that when the cleaning plate 4 falls... Figure 6 From this perspective, the smaller end 401 will be pressed to the right. A support point (not shown in the figure) is set on the second inclined surface 4b. The pressure state causes the larger end 402 to tend to move to the left, thus applying pressure to the protrusion 5 even when gravity is not affected. It should be noted that Figure 5 The spacing of the protrusions 5 in the diagram is set in an enlarged state for easy illustration, and their actual spacing corresponds to the holes 2 on the plate 101.

[0035] Specifically, when the cylinder 1 rotates clockwise, under the action of centrifugal force, the cleaning plate 4 tends to move radially outward, while the small end 401 is additionally subjected to the pressure of the electroplating solution (during rotation), causing the protrusion 5 of the large end 402 to press against the inner surface of the plate 101. When it encounters the hole 2, the end of the protrusion 5 enters the hole 2 to push out the blockage. As the cleaning plate 4 continues to move downward, the protrusion 5 again abuts against the inner surface of the plate 101, thus causing the protrusion 5 to move in a wave-like curve. That is, the large end 402 and the small end 401 of the cleaning plate 4 are swinging. Applying pressure can better push out the blockage in the hole 2 and improve the cleaning effect.

[0036] See Figure 4 , Figure 6 , Figure 7 and Figure 8 This embodiment is a specific solution for the aforementioned support point. An arc segment 4c is provided at one end of the second inclined surface 4b located at the large end 402. The arc segment 4c is tangent to the second inclined surface 4b, and the maximum distance H between the large end 402 of the cleaning plate 4 and the cross-section of the protrusion 5 is greater than the distance from the top wall of the limiting strip 3 to the inner surface of the plate body 101 (the height of the sliding track of the cleaning plate 4). Figure 6In the state shown, the lateral distance H from the leftmost part of the protrusion 5 to the junction of the arc segment 4c and the second inclined surface 4b is greater than the height of the track. Therefore, the second inclined surface 4b of the cleaning plate 4 does not completely fit the top wall of the limiting strip 3, allowing it to rotate counterclockwise, i.e., the small end 401 deflects to the right. Only when the protrusion 5 encounters the hole 2 during the downward movement of the cleaning plate 4 will the small end 401 begin to deflect and squeeze into the hole 2. The situation of the cleaning plate 4 in the track is as follows. Figure 8 As shown, the edge line 5a of the protrusion 5 abuts against the inner surface of the plate 101. At this time, the non-end of the arc segment 4c contacts the top wall of the limiting strip 3, and their straight-line distance is as shown. Figure 8 The L shown is the same as the height of the track.

[0037] Furthermore, in order to generate greater pressure on the left side of the small end 401 so that it can better act on the hole 2, the cleaning plate 4 is set to a top-heavy state, that is, the overall mass is concentrated at the large end 402, and the two ends have different densities. The density of the large end 402 is much greater than the density of the electroplating solution, and the overall density of the cleaning plate 4 is also greater than the density of the electroplating solution, so that the cleaning plate 4 can sink. As for the small end 401, its density is set to be less than that of the electroplating solution. When sinking, the small end 401 generates greater pressure due to the action of the first inclined surface 4a, which is then transmitted to the protrusion 5.

[0038] Specifically, such as in Figure 6 At the dividing line 1s shown, the large end 402 and the small end 401 are separated into two parts with different densities. Alternatively, a density gradient can be used, extending from the small end 401 to the large end 402. The densities mentioned above refer to the overall density, meaning they can be achieved using counterweights, and are not limited to selecting a single material with a density greater or less than that of the electroplating solution. The small end 401 has a lower density, and when the cylinder 1 rotates, its centrifugal force can overcome gravity, meaning it is in a position where... Figure 4 Even at the highest position shown, the small end 401 can remain in contact with the inner top wall of the limiting strip 3, thus preventing the small end 401 from sinking and causing... Figure 7 In the state shown, the small end 401 is attached to the plate 101 and cannot be reset, which causes the protrusion 5 to be unable to be cleaned.

[0039] See Figure 7 , Figure 8 and Figure 9In the above embodiments, the forces acting on the protrusion 5 are directly applied to the inner surface of the plate 101 and the edge of the hole 2. Long-term use will cause significant wear. Therefore, a guide slider 6 is provided on the end face of the cleaning plate 4 in the length direction (i.e., the axial direction of the cylinder 1). The end of the guide slider 6 extending beyond the second inclined surface 4b is arc-shaped or spherical. A guide plate 7 is provided on the top wall of the limiting strip 3. The side of the guide plate 7 that contacts and slides with the end of the guide slider 6 is designed with a wave-like undulation. This undulation corresponds to the hole 2 on the plate 101, that is, the trough corresponds to the hole 2, and the crest corresponds to the inner surface of the plate 101. The crest causes the small end 401 to be in a wave-like undulation. Figure 7 Deflect to the left in the state to reach Figure 8 The state is such that the protrusion 5 just contacts the plate 101 or there is a gap between the two, so that there will be no friction or friction with low front pressure. The trough allows the protrusion 5 to enter the hole 2, reducing or even eliminating the friction effect of the protrusion 5 on the plate 101 and the hole 2. The guide plate 7 and the cleaning plate 4 are misaligned, so their movements do not interfere with each other. The undulation of the surface of the guide plate 7 is used to offset the pressure and control the swing range of the protrusion 5.

[0040] Furthermore, the protrusion 5 is peak-shaped, that is, a mountain-like protrusion, with a spherical surface at its end, so as to better act on the hole 2 to clear the blockage.

[0041] See Figure 4 , Figure 10 and Figure 11 ,exist Figure 4 In the illustrated state, the cleaning plate 4 on the bottommost plate 101 is positioned at the left end when horizontal. However, when tilting begins, without restriction, it may slide to the right end at a certain tilt angle, such as 10° or 30°. In this case, the workpiece does not transfer from this plate 101 to the adjacent plate 101, potentially causing the cleaning plate 4 to come into contact with the workpiece and become stuck. Therefore, to avoid this situation, a locking element is provided between the front end of the plate 101 in the direction of rotation and the small end 401 of the cleaning plate 4. This element limits the cleaning plate 4 after it falls and cleans, preventing it from disengaging until the workpiece is removed from the plate 101. Specifically, as shown... Figure 4 In the state shown, after the bottom plate 101 is rotated and tilted by 50°, the workpiece is completely separated from the plate 101. That is, 50° is the set angle. Once the angle is reached or after the angle is reached, the cleaning plate 4 will separate and slide to the right. The set angle depends on the state of the workpiece separating from the plate 101. Once separated, the cleaning plate 4 can slide to the right to prepare for subsequent cleaning and sliding.

[0042] In one specific implementation, the locking component consists of a flange 8 disposed at the small end 401 of the cleaning plate 4 and an inclined guide surface 9 disposed within the limiting strip 3. When the inclined guide surface 9 is tilted, the cleaning plate 4 will be pulled into the area between the inclined guide surface 9 and the plate body 101 due to gravity after falling. Because the falling has a certain impact, it will be relatively tight when locked. When the plate body 101 is tilted, the small angle will not cause the cleaning plate 4 to disengage, thus forming a limit. After continued rotation, it will disengage due to the increase of the angle. The frictional force depends on the surface roughness between the flange 8 and the inclined guide surface 9.

[0043] As another embodiment of the locking component, the inclined guide surface 9 is replaced with a stop 10 fixed to the inner surface of the plate 101. Both the stop 10 and the flange 8 are conical. When the cleaning plate 4 falls, the flange 8 passes over the stop 10 and forms a limit due to the inclined surface, i.e., the hanging state. After the plate 101 tilts, the angle gradually increases, and the angle between the direction of gravity and the hanging inclined surface becomes smaller, so that it can be detached under the action of gravity.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electroplating roller, comprising a hollow cylindrical body (1) arranged in a columnar spiral shape, the cylindrical body (1) having holes (2) thereon, the cylindrical body (1) being divided into a plurality of plates (101) spaced apart in the circumferential direction, and at least one of the plates (101) being detachable, characterized in that: Limiting strips (3) are provided at both ends of the inner surface of the plate (101) along the length direction. A cleaning plate (4) is slidably provided between the two sets of limiting strips (3). The cleaning plate (4) is attached to one side of the plate (101) and has a protrusion (5). When the cleaning plate (4) rolls with the cylinder (1), it moves at both ends of the width direction of the plate (101). When it moves, the protrusion (5) is subjected to pressure and enters the hole (2) to clean the blockage. The two sides of the cleaning plate (4) in the thickness direction extend from the small end (401) to the large end (402) and tilt outward. When the cylinder (1) rotates, the small end (401) of the cleaning plate (4) moves downward under the action of gravity, and the protrusion (5) on the large end (402) side contacts the hole (2) on the cylinder (1). The tilt angle of the side of the cleaning plate (4) close to the inner surface of the plate body (101) is greater than the tilt angle of the opposite side. When the cleaning plate (4) falls, the small end (401) is pressed away from the inner surface of the plate body (101), and the protrusion (5) on the large end (402) side is pressed.

2. The electroplating roller according to claim 1, characterized in that: The maximum lateral distance between the large end (402) of the cleaning plate (4) and the protrusion (5) is greater than the vertical distance between the inner top wall of the limiting strip (3) and the inner surface of the plate (101). During the process of the small end (401) of the cleaning plate (4) deflecting in the opposite direction of the pressure, the two edges of the cross sections of the large end (402) and the protrusion (5) respectively adhere to the inner surface of the plate (101) and the inner top wall of the limiting strip (3).

3. An electroplating roller according to claim 1 or 2, characterized in that: The density of the large end (402) of the cleaning plate (4) and the overall density of the cleaning plate (4) are both greater than the density of the electroplating solution, while the density of the small end (401) of the cleaning plate (4) is less than the density of the electroplating solution.

4. An electroplating roller according to claim 1 or 2, characterized in that: The cleaning plate (4) has a guide slider (6) on its long end face. The guide slider (6) is located at the small end (401) of the cleaning plate (4). A guide plate (7) is provided on the limiting strip (3). The side wall of the guide plate (7) that contacts the guide slider (6) is wavy. The wavy undulations on the guide plate (7) are adapted to the corresponding holes (2) on the falling path of the cleaning plate (4).

5. An electroplating roller according to claim 1, characterized in that: (5) Protruding in the shape of a peak.

6. The electroplating roller according to claim 1, characterized in that: A locking element is provided between the small end (401) of the cleaning plate (4) and the limiting strip (3). After the cleaning plate (4) falls, it is limited by the locking element so that the cleaning plate (4) does not detach when the plate body (101) and the horizontal direction have not reached the predetermined angle.

7. An electroplating roller according to claim 6, characterized in that: The engaging part is a flange (8) provided on the small end (401) of the cleaning plate (4), and an inclined guide surface (9) is provided in the limiting strip (3). After the cleaning plate (4) falls, the flange (8) contacts and is locked with the inclined guide surface (9). After the plate body (101) rotates to reach the tilt angle, it is released under the action of gravity.

8. An electroplating roller according to claim 6, characterized in that: The engaging part is a flange (8) provided on the small end (401) of the cleaning plate (4), and a stop (10) is provided on the inner surface of the plate body (101). When the cleaning plate (4) falls, the flange (8) passes the stop (10) to the other side to stop, and after the plate body (101) rotates to reach the tilt angle, it disengages under the action of gravity.

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