Open roller and workpiece processing device

Abstract

The present invention provides an open roller and a workpiece processing device, wherein the open roller comprises an open cylinder and a conductive component; the workpiece processing device comprises an open roller. The conductive component is connected to a power source, and one end of the conductive component is rotatably connected to a rotating component, and the other end can extend into the interior of the open cylinder or be placed outside the open cylinder. When the open roller of this structure is electroplated, when there are fewer workpieces in the roller and they are scattered, even if the workpieces in the middle part of the roller cannot contact the cathode conductive shafts on both sides for conduction when rolling, because the other end of the conductive component extends into the accommodating inner cavity, the contact area and contact probability between the workpieces in the middle part and the cathode are increased, thereby improving the electroplating quality when there are fewer workpieces; at the same time, it will not cause a large amount of cation loss in the electroplating solution, thereby saving costs; when the conductive component rotates with the roller, it does not rotate synchronously with the roller in the circumferential direction, and the conductive component is not easy to be entangled with the workpiece, thereby avoiding damage to the conductive component or the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of electroplating equipment, and in particular to an open roller and a workpiece processing device. Background Art

[0002] Roll plating is also known as drum electroplating. A certain number of workpieces are placed in the inner cavity of a barrel. As the drum rotates, the workpieces are continuously exposed to the plating liquid in the tank, and a metal layer or alloy coating of the required thickness is deposited on the surface of the workpiece to achieve the purpose of protecting the surface of the workpiece and other functions.

[0003] The open roller in the prior art includes a conductive shaft, a driving shaft, a passive shaft and a transmission belt arranged on both sides of the roller, wherein the transmission belt is wound around the driving shaft and the passive shaft and forms a closed loop, the front peripheral surfaces on both sides of the transmission belt are wound around the periphery of the conductive disk, and the front peripheral surface of the transmission belt and the two conductive disks form a receiving cavity with an opening and inward depression. The external driving force drives the driving shaft to rotate, and the rotation of the driving shaft drives the transmission belt to rotate so that the workpiece in the receiving cavity is constantly rolling, so that the workpiece contacts the electroplating solution in the tank body and the conductive shafts on both sides of the roller, and the workpiece contacts the conductive shaft to conduct electricity and absorbs metal ions to complete the electroplating.

[0004] However, for an open drum of this structure, when a small number of workpieces are loaded in the drum, the workpieces are scattered in the drum. During the rotation and tumbling process, some workpieces distributed in the middle of the drum cannot contact the conductive shafts on both sides and cannot conduct electricity to absorb metal ions, thus affecting the electroplating effect; a small number of workpieces need to tumble multiple times to fully contact the conductive shafts on both sides, resulting in low electroplating efficiency.

[0005] The transmission belt is made of non-conductive materials such as plastic. The plating solution contains cations. The workpiece to be plated serves as the cathode. The workpiece with the plating solution contacts the cathode conductive shafts on both sides during the tumbling process to conduct electricity. After the workpiece is conductive, the cations in the plating solution on the workpiece are deposited on the surface of the workpiece through electrolysis to form a coating. When there are fewer workpieces in the drum, the cathode conductive area needs to be appropriately increased. The transmission belt cannot be made of conductive material directly. If so, the area of ​​the transmission belt as the cathode will be much larger than the product area, and most of the cations will be deposited on the surface of the transmission belt to form a coating, which will make it impossible to achieve effective and uniform plating of the workpiece; at the same time, it will also lead to large consumption of cations, and the cost of electroplating will be greatly increased.

[0006] There is also a drum structure in the prior art, where the cable is inserted into the drum from both sides of the drum as a conductive electrode during the electroplating process, and the external force drives the drum to rotate, and the workpiece is constantly turned inside the drum and contacts the cable to complete the electroplating. In this drum structure, the cable is easily entangled with the workpiece when the drum rotates, which can damage the cable or the workpiece. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the open drum in the prior art that the electroplating effect is poor and the electroplating efficiency is low when a small amount of workpieces to be electroplated are loaded.

[0008] To this end, the present invention provides an open drum, comprising

[0009] An open cylinder, the open cylinder comprising a transmission belt and a rotating assembly driving the transmission belt to rotate, the transmission belt is wound around the outer side of the rotating assembly and forms a recessed accommodating inner cavity with an open opening; and

[0010] A conductive component is connected to a power source, and one end of the conductive component is rotatably connected to the rotating component, and the other end of the conductive component can extend into the interior of the open cylinder or be placed outside the open cylinder.

[0011] Optionally, in the above-mentioned open roller, the rotating assembly includes a driving shaft and a driven shaft, the transmission belt is in a closed loop and is wound around the driving shaft and the driven shaft, and one end of the conductive assembly is rotatably connected to the driving shaft.

[0012] Optionally, in the above-mentioned open drum, the open cylinder body further includes a conductive disk, the conductive disk is arranged between the driving shaft and the driven shaft, and the end side of the transmission belt is wound around the conductive disk.

[0013] Optionally, in the above-mentioned open roller, the conductive assembly includes a conductive component and a rotating bracket that drives the conductive component to rotate, and the rotating bracket includes two side arms and a cross arm fixedly connected to the conductive component; the two side arms are rotatably arranged on the driving shaft, the cross arm is mounted between the two side arms, and the cross arm is fixedly connected to the side arms.

[0014] Optionally, in the above-mentioned open roller, the conductive component may extend to the front outer surface of the transmission belt.

[0015] Optionally, in the above-mentioned open roller, there are multiple conductive components, and the multiple conductive components are evenly spaced and distributed on the cross arm.

[0016] Optionally, in the above-mentioned open drum, the two side arms are arranged perpendicular to the axis of the driving shaft; and the cross arm is parallel to the axis of the driving shaft.

[0017] Optionally, in the above-mentioned open drum, a longitudinal section of a section of any side arm close to the driving shaft is in the shape of an arc, and a section of any side arm away from the driving shaft is a straight arm.

[0018] Optionally, in the above-mentioned open roller, the transmission belt is a chain plate or a belt.

[0019] The present invention provides a workpiece processing device, comprising any one of the open rollers described above.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. The open drum provided by the present invention comprises an open cylinder and a conductive component, wherein the open cylinder comprises a transmission belt and a rotating component for driving the transmission belt to rotate, the transmission belt is wound around the outside of the rotating component and forms a accommodating inner cavity with an open opening and a recess; the conductive component is conductive to a power source, and one end of the conductive component is rotatably connected to the rotating component, and the other end can extend into the interior of the open cylinder or be placed outside the open cylinder.

[0022] During electroplating with the open drum of this structure, the workpiece is accommodated in the receiving cavity of the transmission belt, the conductive component serves as the cathode, and the other end of the conductive component extends into the receiving cavity. After the workpiece moves upward due to the rotation of the drum, the workpiece rolls down into the receiving cavity, and the workpiece contacts the conductive component for conduction, so that the cations on the workpiece are electrolytically deposited on the surface of the workpiece to form a coating. When there are fewer workpieces in the drum and they are scattered, even if the workpieces in the middle part of the drum cannot contact the cathode conductive shafts on both sides for conduction when rolling, since the other end of the conductive component extends into the receiving cavity, the contact area and contact probability between the workpiece in the middle part and the cathode are increased, thereby improving the electroplating quality when there are fewer workpieces. At the same time, it will not cause a large loss of cations in the electroplating solution, thereby saving costs. Since one end of the conductive component is connected to the rotating component and the other end extends into the drum, the conductive component is not arranged to penetrate along the length direction of the drum, and the conductive component does not rotate synchronously with the drum along the circumferential direction when the drum rotates, and the conductive component is not easy to be entangled with the workpiece, thereby avoiding damage to the conductive component or the workpiece.

[0023] 2. The open roller provided by the present invention has a longitudinal section shape of a section of any side arm close to the driving shaft in a circular arc shape, and a section of any side arm away from the driving shaft is a straight arm. In the working state, the rotating bracket is rotated to allow the conductive component to extend into the receiving cavity of the roller. The setting of the side arm circular arc section allows the side arm to extend into the receiving cavity from the middle of the roller opening, and the conductive component extends to the middle of the outer surface of the front side of the transmission belt, thereby increasing the probability of the workpiece contacting the conductive component during the rolling process; at the same time, the setting of the side arm circular arc section increases the strength of the rotating bracket, preventing the rotating bracket from breaking during repeated rotations, and replacing the rotating bracket and the conductive component will increase the cost.

[0024] 3. The open roller provided by the present invention can be used for unloading workpieces after the electroplating is completed. In the unloading state, the roller rotates counterclockwise, and the workpiece moves to the roller opening with the transmission belt. The roller continues to rotate counterclockwise to bring the workpiece out of the roller to complete the unloading. The conductive component is rotated counterclockwise to place it outside the open cylinder, and a foldable baffle is set on the support frame. In the unloading state, after the rotating bracket rotates to the top of the roller, the baffle is unfolded to block the side wall of the rotating bracket to fix the rotating bracket, or a hook can be set above the open roller. In the unloading state, the rotating bracket is hooked with the hook to fix it. The setting of the conductive component not only appropriately increases the conductive area of ​​the workpiece, but also can achieve uniform electroplating when the workpieces are small and scattered. At the same time, the conductive component can be rotated to fix it outside the open cylinder in the unloading state to avoid the wire component blocking the workpiece and ensure normal unloading.

[0025] 4. The workpiece processing device provided by the present invention comprises an open roller, a base, a first fixing seat, a second fixing seat and a sealing plate. The first fixing seat and the second fixing seat are respectively arranged on both sides of the base, the sealing plate is arranged between the first fixing seat and the second fixing seat, and a firm installation frame is formed between the base, the first fixing seat, the second fixing seat and the sealing plate, and an installation cavity is formed inside the frame to accommodate the open roller.

[0026] The workpiece processing device of this structure has an internal conductive component that increases the contact area and contact probability between the middle part of the workpiece and the cathode, thereby improving the electroplating quality when there are fewer workpieces; at the same time, it will not cause a large loss of cations in the electroplating solution, saving costs; and it can also ensure normal unloading of the open roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a left view of the working state of the workpiece processing device provided in Example 2 of the present invention;

[0029] Figure 2 It is a left view of the workpiece processing device provided in Example 2 of the present invention in the unloading state;

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of the workpiece handling device after removing some chain plates;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the workpiece processing device;

[0032] Description of reference numerals:

[0033] 11-transmission belt; 121-driving shaft; 122-passive shaft; 13-arc bracket; 14-conductive shaft; 15-tensioning frame; 21-conductive component; 22-rotating bracket; 221-side arm; 222-cross arm; 3-conductive disk; 4-base; 5-first fixed seat; 6-second fixed seat; 7-sealing plate. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example 1

[0039] This embodiment provides an open drum, such as Figures 1 to 3 As shown, it includes an open cylinder and a conductive component.

[0040] Among them, the open cylinder includes a transmission belt 11 and a rotating component that drives the transmission belt 11 to rotate. The transmission belt 11 is wound around the outside of the rotating component and forms a accommodating inner cavity with an open opening and a recessed cavity. The conductive component is connected to the power supply, and one end of the conductive component is rotatably connected to the rotating component, and the other end can extend into the interior of the open cylinder or be placed outside the open cylinder.

[0041] During electroplating with the open drum of this structure, the workpiece is accommodated in the accommodating cavity of the transmission belt 11, and the conductive component serves as the cathode. The conductive component is rotated clockwise so that the other end thereof extends into the accommodating cavity. After the drum rotates clockwise to drive the workpiece upward, the workpiece rolls down into the accommodating cavity. The tumbling workpiece contacts the conductive component for conduction, so that the cations on the workpiece are electrolytically deposited on the surface of the workpiece to form a coating. When there are fewer workpieces in the drum and they are scattered, even if the workpieces in the middle part of the drum cannot contact the cathode conductive shafts 14 on both sides for conduction when rolling, since the other end of the conductive component extends into the accommodating cavity, the contact area and contact probability between the workpiece in the middle part and the cathode are increased, thereby improving the electroplating quality when there are fewer workpieces. At the same time, it will not cause a large amount of cation loss in the electroplating solution, thereby saving costs. Since one end of the conductive component is connected to the rotating component and the other end extends into the drum, the conductive component is not arranged to penetrate along the length direction of the drum, and the conductive component does not rotate synchronously with the drum along the circumferential direction when the drum rotates, and the conductive component is not easily entangled with the workpiece, thereby avoiding damage to the conductive component or the workpiece.

[0042] Specifically, the open roller also includes two support frames (not shown in the figure), two conductive discs 3, two conductive shafts 14, multiple arc-shaped brackets 13 and two tensioning frames 15; the rotating assembly includes a driving shaft 121 and a passive shaft 122; the transmission belt 11 is a closed loop and is wound around the driving shaft 121 and the passive shaft 122. Among them, the two support frames are arranged opposite to each other, the two ends of the driving shaft 121 are rotatably arranged on the support frames, the two conductive shafts 14 are respectively inserted into the support frames on both sides, the conductive disc 3 is sleeved on the conductive shaft 14, the conductive shaft 14 is powered from the power supply, and the conductive disc 3 is in contact with the conductive shaft 14 for conduction, which appropriately increases the conductive area on both sides of the roller and makes the electroplating uniform. The conductive disc 3 is arranged between the driving shaft 121 and the passive shaft 122, and the end side of the transmission belt 11 is wound around the conductive disc 3.

[0043] The arc-shaped bracket 13 is arranged between the driving shaft 121 and the driven shaft 122, and both ends of the arc-shaped bracket 13 are fixed on the supporting frame. The transmission belt 11 is a chain plate or a belt.

[0044] See also Figure 4The two tensioning frames 15 are rotatably mounted on the two conductive shafts 14 respectively. The tensioning frames 15 are located between the support frame and the conductive disk 3. The two ends of the passive shaft 122 are rotatably mounted on the tensioning frames 15 on both sides. The tensioning frames 15 are provided with mounting holes. When the transmission belt 11 is loose and needs to be tightened, the tensioning frames 15 are rotated upward to tighten the transmission belt 11, and then the tensioning frames 15 are fixed to the support frame by passing the locking piece through the mounting holes on the tensioning frames 15.

[0045] See also Figures 1 to 3 The conductive component includes a conductive component 21 and a rotating bracket 22 for driving the conductive component 21 to rotate; the rotating bracket 22 includes two side arms 221 and a cross arm 222 fixedly connected to the conductive component 21; the two side arms 221 are rotatably sleeved on the driving shaft 121 at one end close to the driving shaft 121, and the cross arm 222 is mounted between the two side arms 221, and the cross arm 222 is fixedly connected to the side arms 221. The two side walls are arranged perpendicular to the axis of the driving shaft 121, and the cross arm 222 is parallel to the axis of the driving shaft 121. There are multiple conductive components 21, and the multiple conductive components 21 are evenly spaced on the cross arm 222. The multiple conductive components 21 extend into the accommodating inner cavity, which appropriately increases the contact area and contact probability between the workpiece and the conductive component 21, and can ensure the electroplating quality of the workpiece when the workpiece is small and scattered, while avoiding a large amount of cation loss.

[0046] The longitudinal section of a section of any side arm 221 close to the driving shaft 121 is an arc shape, and the section of any side arm 221 away from the driving shaft 121 is a straight arm. Figure 1 As shown, in the working state, the rotating bracket 22 is rotated to make the conductive component 21 extend into the accommodating inner cavity of the drum, and the arc segment setting of the side arm 221 enables the side arm 221 to extend into the accommodating inner cavity from the middle of the drum opening, and the conductive component 21 extends to the middle of the front outer surface of the transmission belt 11, thereby increasing the contact probability of the workpiece with the conductive component 21 during the rolling process; at the same time, the arc segment setting of the side arm 221 increases the strength of the rotating bracket 22, thereby preventing the rotating bracket 22 from breaking during repeated rotation, and replacing the rotating bracket 22 and the conductive component 21 will increase the cost.

[0047] The rotating bracket 22 is made of conductive material and is connected to a wire, which is connected to a side arm 221 of the rotating bracket 22. The wire draws electricity from a cathode cable to power the rotating bracket 22. The conductive component 21 is a conductive rod, which is connected to the rotating bracket 22 for conduction. The conductive rod serves as a cathode. After the conductive rod is extended into the accommodating inner cavity, the workpiece contacts the conductive rod for conduction, causing cations to be deposited on the surface of the workpiece to form a coating.

[0048] like Figure 2As shown, after the workpiece is electroplated, it is unloaded. In the unloading state, the drum rotates counterclockwise, and the workpiece moves to the opening of the drum with the transmission belt 11. The drum continues to rotate counterclockwise to bring the workpiece out of the drum to complete the unloading. The conductive component is rotated counterclockwise to place it outside the open cylinder, and a foldable baffle is set on the support frame. In the unloading state, after the rotating bracket 22 rotates to the top of the drum, the baffle is unfolded to block the side wall of the rotating bracket 22 to fix the rotating bracket 22, or a hook can be set above the open drum. In the unloading state, the rotating bracket 22 is hooked with the hook to fix it. The setting of the conductive component not only appropriately increases the conductive area of ​​the workpiece, but also can achieve uniform electroplating when the workpieces are small and scattered. At the same time, the conductive component can be rotated to fix it outside the open cylinder in the unloading state to avoid the wire component blocking the workpiece and ensure normal unloading.

[0049] As a first alternative implementation of Example 1, the two sections of the side wall of the rotating bracket 22 close to and away from the driving shaft 121 can be straight arms or arc arms. As long as the rotating bracket 22 can be rotated in the electroplating state to make the conductive component 21 extend into the accommodating cavity, and in the unloading state, the rotating bracket 22 can be rotated to be placed outside the drum.

[0050] As a second alternative implementation of Example 1, the side wall can also be set at a certain inclination angle with the axis of the driving shaft 121. As a further variation, the conductive component 21 can be set on the cross arm 222 at non-equidistant intervals, and only one conductive component 21 can be set, located at the center of the cross arm 222; the conductive component 21 can also be a conductive plate; when the conductive component 21 extends into the accommodating inner cavity, its front end portion may not extend to the front outer surface of the transmission belt 11, and is separated from the front outer surface by a certain distance, as long as the conductive component 21 can contact the workpiece after extending into the accommodating inner cavity, the conductive area can be increased.

[0051] As a third alternative implementation of Example 1, the rotating bracket 22 may not be provided, and the conductive component 21 may be directly rotatably mounted on the driving shaft 121 .

[0052] Example 2

[0053] This embodiment provides a workpiece processing device, such as Figures 1 to 4 As shown, it includes the open drum in embodiment 1, a base 4, a first fixed seat 5, a second fixed seat 6 and a sealing plate 7.

[0054] The first fixing seat 5 and the second fixing seat 6 are respectively arranged on both sides of the base 4, and the sealing plate 7 is spanned between the first fixing seat 5 and the second fixing seat 6. A firm installation frame is surrounded by the base 4, the first fixing seat 5, the second fixing seat 6 and the sealing plate 7, and an installation cavity is formed therein to accommodate the open roller.

[0055] Among them, the first fixed seat 5 and the second fixed seat 6 act as the support frame of the open roller in Example 1, the two ends of the active shaft 121 are rotatably fixed on the first fixed seat 5 and the second fixed seat 6 on both sides, the two ends of the passive shaft 122 are rotatably set on the tensioning frames 15 on both sides, the two ends of the arc bracket 13 are respectively fixed on the first fixed seat 5 and the second fixed seat 6, the two conductive shafts 14 are respectively inserted into the first fixed seat 5 and the second fixed seat 6 on both sides, the two conductive plates 3 are respectively sleeved on the conductive shafts 14 on both sides, and the two tensioning frames 15 are respectively rotatably sleeved on the conductive shafts 14.

[0056] The workpiece processing device of this structure has an internal conductive component that increases the contact area and contact probability between the middle part of the workpiece and the cathode, thereby improving the electroplating quality when there are fewer workpieces; at the same time, it will not cause a large loss of cations in the electroplating solution, saving costs; and it can also ensure normal unloading of the open roller.

[0057] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An open drum, characterized in that: include An open cylinder, the open cylinder comprising a transmission belt (11) and a rotating assembly driving the transmission belt (11) to rotate, the transmission belt (11) being wound around the outside of the rotating assembly and forming a recessed accommodating inner cavity having an open opening; as well as A conductive component is connected to a power source, and one end of the conductive component is rotatably connected to the rotating component, and the other end of the conductive component can extend into the interior of the open cylinder or be placed outside the open cylinder; The rotating assembly comprises a driving shaft (121) and a driven shaft (122); the transmission belt (11) is in a closed loop and is wound around the driving shaft (121) and the driven shaft (122); one end of the conductive assembly is rotatably connected to the driving shaft (121); the open cylinder further comprises a conductive disk (3); the conductive disk (3) is arranged between the driving shaft (121) and the driven shaft (122); the end side of the transmission belt (11) is wound around the conductive disk (3); the conductive disk (3) is suitable for drawing electricity from a power source.

2. The open drum according to claim 1, characterized in that: The conductive component comprises a conductive component (21) and a rotating bracket (22) for driving the conductive component (21) to rotate; the rotating bracket (22) comprises two side arms (221) and a cross arm (222) fixedly connected to the conductive component (21); the two side arms (221) are rotatably arranged on the driving shaft (121), the cross arm (222) is mounted between the two side arms (221), and the cross arm (222) is fixedly connected to the side arms (221).

3. The open drum according to claim 2, characterized in that: The conductive component (21) may extend to the front outer surface of the transmission belt (11).

4. The open drum according to claim 2 or 3, characterized in that: There are a plurality of the conductive components (21), and the plurality of the conductive components (21) are distributed on the cross arm (222) at equal intervals.

5. The open drum according to claim 2 or 3, characterized in that: The two side arms (221) are arranged perpendicular to the axis of the driving shaft (121); and the cross arm (222) is parallel to the axis of the driving shaft (121).

6. The open drum according to claim 2 or 3, characterized in that: A longitudinal section of a section of any of the side arms (221) close to the driving shaft (121) is in the shape of an arc, and a section of any of the side arms (221) away from the driving shaft (121) is a straight arm.

7. The open drum according to any one of claims 1 to 3, characterized in that: The transmission belt (11) is a chain plate or a belt.

8. A workpiece processing device, characterized in that: The invention comprises the open drum according to any one of claims 1 to 7.

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