Cobalt-chromium alloy support polishing auxiliary equipment

Abstract

The invention discloses cobalt-chromium alloy support polishing auxiliary equipment, and belongs to the field of polishing, the auxiliary equipment comprises an electrolytic tank, a power supply and a cathode bar electrically connected to a cathode of the power supply and inserted into the electrolytic tank, a feeding mechanism is arranged on the electrolytic tank, and the feeding mechanism comprises a stand column fixedly installed on the electrolytic tank; a sliding groove is formed in the outer side wall of the stand column, a threaded rod is rotationally installed in the sliding groove, one end of the threaded rod penetrates through one end of the stand column, a motor is fixedly installed at the end of the threaded rod, a sliding block matched with the sliding groove is connected to the threaded rod in a screwed mode, a hanging plate is fixedly installed on the sliding block, a hanging rope is fixedly installed below the hanging plate, and a liquid immersion plate is fixedly installed at the end, away from the hanging plate, of the hanging rope. Compared with a traditional electric clamp fixing mode, the mode that the auxiliary equipment is directly arranged on the anode bar in a sleeving mode is quicker and convenient to operate, the cobalt-chromium alloy support can be used to make contact with the anode bar along with pressing of the anode bar, power-on stability is guaranteed, and the polishing effect is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of polishing technology, and in particular to a cobalt-chromium alloy bracket polishing auxiliary device. Background Art

[0002] Interventional vascular stent therapy is an effective method for resolving cardiovascular stenosis, improving patient survival rates, and enhancing both quality of life and survival time. Cobalt-chromium alloy is increasingly being used in stent production. However, after initial processing, the surface of cobalt-chromium alloy becomes rough and non-smooth, which affects the stent's blood compatibility. The greater the stent's roughness, the larger the area exposed to blood, potentially leading to poor blood flow and a greater likelihood of clotting. Polishing can effectively reduce the surface roughness of cobalt-chromium stents, with electrochemical polishing currently being the most commonly used method. Electrochemical polishing involves an electrolytic system consisting of an auxiliary fixture and cobalt-chromium alloy stent as the anode, a stainless steel or titanium plate as the cathode, a polishing solution, and a power source, supplemented by stirring and anode motion. When the power source is applied, the stent is exposed to an external voltage, causing the electrode potential to change, and a film to form on the stent surface. In the polishing solution, microscopically raised areas on the stent surface experience higher current density, leading to faster dissolution, while microscopic recesses experience lower current density, leading to slower dissolution. After a period of reaction, the stent's inner and outer surfaces become smooth and flat. Compared with metal machining methods, electrochemical polishing is more uniform and the material surface is more rounded. Therefore, the electrochemical polishing process is an important part of the process of manufacturing cobalt-chromium vascular stents.

[0003] Due to its special use, the cobalt-chromium alloy bracket is light in weight. If the cobalt-chromium alloy brackets are clamped one by one with traditional electric clamps and placed into the electrolytic cell, it is very cumbersome. If a unified conductive rod is used to support the cobalt-chromium alloy bracket and press it into the electrolytic cell, the lack of a stable support point can easily lead to poor electrical contact of the cobalt-chromium alloy bracket and poor polishing effect.

[0004] Therefore, the present application provides a cobalt-chromium alloy bracket polishing auxiliary equipment to solve the above problems. Summary of the Invention

[0005] The present application provides a cobalt-chromium alloy bracket polishing auxiliary equipment, which aims to solve the problems raised in the background technology that the existing cobalt-chromium alloy brackets are light in weight due to their special uses. If traditional electric clamps are used to clamp the cobalt-chromium alloy brackets one by one and place them into the electrolytic cell, it is very cumbersome. If a unified conductive rod is used to support the cobalt-chromium alloy bracket and press it into the electrolytic cell, there is no stable support point, which easily leads to poor electrical contact of the cobalt-chromium alloy bracket and poor polishing effect.

[0006] To achieve the above objectives, the present application provides the following technical solution: a cobalt-chromium alloy stent polishing auxiliary device, comprising an electrolytic cell, a power supply, and a cathode rod electrically connected to the cathode of the power supply and inserted into the electrolytic cell, wherein the electrolytic cell is provided with a feeding mechanism: The feeding mechanism includes a column fixedly mounted on the electrolytic cell, a slide groove is provided on the outer side wall of the column, a screw is rotatably mounted in the slide groove, one end of the screw rod passes through one end of the column and a motor is fixedly mounted at the end, a slider adapted to the slide groove is screwed onto the screw, a hanging plate is fixedly mounted on the slider, a hanging rope is fixedly mounted below the hanging plate, an immersion plate is fixedly mounted on the end of the hanging rope away from the hanging plate, and an anode rod for electrically connecting to the anode of a power supply is fixedly mounted on the immersion plate. In this way, when polishing the cobalt-chromium alloy bracket, the annular cobalt-chromium metal brackets are put on the anode rod one by one, and then the motor is started, the motor drives the screw, and the screw drives the slider to move down in the slide groove, thereby driving the hanging plate to move down, so that the immersion plate enters the electrolytic cell under the suspension of the hanging rope, and then the power supply is started, and the cathode rod and the anode rod are energized, so that the cobalt-chromium alloy bracket is energized to react with the electrolyte in the electrolytic cell for polishing. Compared with the traditional electric clamp fixing method, the method of directly putting it on the anode rod is faster and easier to operate, and the cobalt-chromium alloy bracket can be used in contact with the anode rod by following the pressure of the anode rod, ensuring stable power supply and polishing effect.

[0007] Preferably, the immersion plate is arranged in an L-shape, and one end of the anode rod passes through the immersion plate and extends outside the immersion plate.

[0008] Preferably, in order to energize the anode rod, a conductive ring is screwed onto one end of the anode rod located outside the immersion plate, and the conductive ring is electrically connected to the power supply via a wire, which facilitates disassembly and maintenance.

[0009] Preferably, to compress the cobalt-chromium alloy bracket, the immersion plate has a through-hole. A pressure plate is movably mounted between the bottom of the immersion plate and the anode rod. A domed handle is fixedly mounted on the pressure plate and plugs into the through-hole. This prevents the cobalt-chromium alloy bracket from breaking contact with the anode rod due to buoyancy when entering the electrolyte, resulting in greater stability.

[0010] Preferably, in order to fix the pressing plate, a screw is screwed onto the arch handle, the screw is rotatably mounted on the top of the immersion plate, the screw passes through the arch handle and a knob is fixedly mounted at the end, which makes it easy to fix the pressing plate, quick and convenient.

[0011] Preferably, in order to push the cobalt-chromium alloy bracket, a scraper is sleeved on the anode rod, and a plate ear is fixedly installed on the outer wall of the scraper, so that the cobalt-chromium alloy bracket can be quickly separated from the anode rod without having to disassemble it one by one, thereby improving work efficiency.

[0012] Preferably, in order to quickly load and unload materials, the auxiliary equipment also includes a tilting mechanism, which includes a support plate fixedly mounted on the hanging plate, on which a winding roller for winding one of the hanging ropes is rotatably mounted, one end of the winding roller passes through the support plate and is fixedly mounted with a servo motor at the end, thereby achieving high working efficiency.

[0013] Preferably, in order to ensure the stability of the immersion board, two symmetrically arranged hanging blocks are fixedly installed on the other end of the hanging board away from the winding roller, and another set of hanging ropes are fixedly installed between the two hanging blocks and the immersion board, thereby preventing the immersion board from tipping over and making it safer.

[0014] This auxiliary equipment sets the annular cobalt-chromium metal brackets on the anode rod one by one, and then starts the motor, which drives the screw, and the screw drives the slider to move down in the slide, thereby driving the hanging plate to move down, so that the immersion plate enters the electrolytic cell under the suspension of the hanging rope, and then starts the power supply to energize the cathode rod and the anode rod, so that the cobalt-chromium alloy brackets are energized to react with the electrolyte in the electrolytic cell for polishing. Compared with the traditional electric clamp fixing method, the method of directly setting it on the anode rod is faster and easier to operate, and the cobalt-chromium alloy bracket can be used in contact with the anode rod as it follows the pressure of the anode rod, ensuring stable power supply and polishing effect.

[0015] When loading the auxiliary equipment, as shown in the figure, the servo motor is started to drive the winding roller to rotate, and the lifting rope is wound upward, while the other end of the lifting rope remains unchanged, thereby lifting the unobstructed end of the anode rod. When installing the cobalt-chromium alloy bracket, the annular cobalt-chromium alloy bracket will automatically slide down to the other end along the inclined surface of the anode rod, completing the quick installation, which is convenient and fast. When disassembling the cobalt-chromium alloy bracket, as shown in the figure, the servo motor is started to drive the winding roller to rotate, and the lifting rope is loosened downward, while the other end of the lifting rope remains unchanged, thereby causing the unobstructed end of the anode rod to tilt downward. When disassembling the cobalt-chromium alloy bracket, the annular cobalt-chromium alloy bracket will automatically slide down and detach from the anode rod along the inclined surface of the anode rod, thereby achieving high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of a cobalt-chromium alloy bracket polishing auxiliary device; Figure 2 This is a schematic diagram of the back structure of a cobalt-chromium alloy bracket polishing auxiliary device; Figure 3 This is a schematic diagram of the bottom structure of a cobalt-chromium alloy bracket polishing auxiliary equipment; Figure 4 This is a schematic cross-sectional view of a cobalt-chromium alloy stent polishing auxiliary device; Figure 5 This is a schematic diagram of a cobalt-chromium alloy stent polishing auxiliary device during polishing; Figure 6 This is a schematic diagram of a cobalt-chromium alloy bracket polishing auxiliary equipment during loading; Figure 7 This is a schematic diagram of the state of a cobalt-chromium alloy bracket polishing auxiliary equipment during cutting.

[0017] In the picture: 1. Electrolytic cell; 2. Power supply; 3. Cathode rod; 4. Feeding mechanism; 41. Column; 42. Slide; 43. Screw; 44. Motor; 45. Slider; 46. Hanging plate; 47. Hanging rope; 48. Immersion plate; 49. Anode rod; 410. Conductive ring; 411. Through hole; 412. Pressing plate; 413. Arch handle; 414. Screw; 415. Knob; 416. Scraper; 417. Plate ear; 5. Tilting mechanism; 51. Support plate; 52. Winding roller; 53. Servo motor; 54. Hanging block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] Example 1 This embodiment provides a cobalt-chromium alloy bracket polishing auxiliary equipment, such as Figure 1-7 As shown, the auxiliary equipment includes an electrolytic cell 1, a power supply 2, and a cathode rod 3 electrically connected to the cathode of the power supply 2 and inserted into the electrolytic cell 1. A feeding mechanism 4 is provided on the electrolytic cell 1: The feeding mechanism 4 includes a column 41 fixedly mounted on the electrolytic cell 1, a chute 42 is provided on the outer wall of the column 41, a screw 43 is rotatably installed in the chute 42, one end of the screw 43 passes through one end of the column 41 and a motor 44 is fixedly installed at the end, a slider 45 adapted to the chute 42 is screwed on the screw 43, a hanging plate 46 is fixedly mounted on the slider 45, a hanging rope 47 is fixedly mounted below the hanging plate 46, an immersion plate 48 is fixedly mounted on the end of the hanging rope 47 away from the hanging plate 46, and an anode rod 49 for electrically connecting to the anode of the power supply 2 is fixedly mounted on the immersion plate 48.

[0020] During use, the annular cobalt-chromium metal brackets are put on the anode rod 49 one by one, and then the motor 44 is started. The motor 44 drives the screw 43, and the screw 43 drives the slider 45 to move downward in the slide 42, thereby driving the hanging plate 46 to move downward, so that the immersion plate 48 enters the electrolytic cell 1 under the suspension of the hanging rope 47, and then the power supply 2 is started, and the cathode rod 3 and the anode rod 49 are energized, so that the cobalt-chromium alloy bracket is energized to react with the electrolyte in the electrolytic cell 1 for polishing. Compared with the traditional electric clamp fixing method, the method of directly putting it on the anode rod 49 is faster and easier to operate, and the pressure of the anode rod 49 allows the cobalt-chromium alloy bracket to be in contact with the anode rod 49, ensuring stable power supply and polishing effect.

[0021] Specifically, the immersion plate 48 is arranged in an L-shape, and one end of the anode rod 49 passes through the immersion plate 48 and extends outside the immersion plate 48 .

[0022] More specifically, a conductive ring 410 is screwed onto one end of the anode rod 49 outside the immersion plate 48. Conductive ring 410 is electrically connected to the power source 2 via a wire. During use, the conductive ring 410 with the wire is screwed onto the end of the anode rod 49 to electrically connect the anode rod 49, making disassembly and maintenance easier.

[0023] Furthermore, the immersion plate 48 is provided with a through-hole 411, and a pressure plate 412 is movably mounted between the bottom of the immersion plate 48 and the anode rod 49. An arched handle 413 is fixedly mounted on the pressure plate 412 and inserted into the through-hole 411. During use, the arched handle 413 is installed in the through-hole 411, and then the pressure plate 412 is installed below the arched handle 413. By pushing down the arched handle 413, the pressure plate 412 moves downward and presses against the top outer surface of each cobalt-chromium alloy bracket on the anode rod 49. This ensures that the cobalt-chromium alloy bracket will not lose contact with the anode rod 49 due to buoyancy when entering the electrolyte, thereby enhancing stability.

[0024] It should be noted that the pressing plate 412 is made of insulating material to prevent electrical leakage.

[0025] Furthermore, a screw rod 414 is screwed onto the arched handle 413, which is rotatably mounted on the top of the immersion plate 48. The screw rod 414 passes through the arched handle 413 and is fixedly mounted at the end with a knob 415. During use, turning the knob 415 rotates the screw rod 414, which in turn moves the arched handle 413 up and down within the through hole 411, thereby changing the height of the pressure plate 412 and conveniently and quickly fixing the pressure plate 412.

[0026] The anode rod 49 is provided with a scraper 416, and a plate ear 417 is fixedly mounted on the outer wall of the scraper 416. When removing the cobalt-chromium alloy bracket, the plate ear 417 is pulled, causing the scraper 416 to slide on the anode rod 49, thereby pushing the cobalt-chromium alloy bracket off the anode rod 49 from the side of the cobalt-chromium alloy bracket. This allows the cobalt-chromium alloy bracket to be quickly removed from the anode rod 49, eliminating the need to remove each bracket one by one, thereby improving work efficiency.

[0027] Example 2 Unlike the first embodiment, it is rather cumbersome to plug or disassemble the cobalt-chromium alloy brackets one by one when loading and unloading. Therefore, the auxiliary device further comprises a tilting mechanism 5, which comprises a support plate 51 fixedly mounted on the hanging plate 46. A winding roller 52 for winding one of the hanging ropes 47 is rotatably mounted on the support plate 51. One end of the winding roller 52 passes through the support plate 51 and a servo motor 53 is fixedly mounted on the end. When in use, when loading, as shown in FIG. Figure 6 As shown, the servo motor 53 is started to drive the winding roller 52 to rotate, and the hanging rope 47 is wound upward, while the other end of the hanging rope 47 remains unchanged, so that the unobstructed end of the anode rod 49 is lifted. When installing the cobalt-chromium alloy bracket, the annular cobalt-chromium alloy bracket will automatically slide down to the other end along the inclined surface of the anode rod 49, completing the quick installation. It is convenient and quick. When disassembling the cobalt-chromium alloy bracket, as shown in FIG. Figure 7 As shown, the servo motor 53 is started to drive the winding roller 52 to rotate, and the hanging rope 47 is loosened downward, while the other end of the hanging rope 47 remains unchanged, so that the unobstructed end of the anode rod 49 is tilted downward. When the cobalt-chromium alloy bracket is disassembled, the annular cobalt-chromium alloy bracket will automatically slide down along the inclined surface of the anode rod 49 and detach from the anode rod 49, thereby improving work efficiency.

[0028] Specifically, two symmetrically arranged hanging blocks 54 are fixedly mounted on the other end of the hanging plate 46 away from the winding roller 52. Another set of hanging ropes 47 are fixedly mounted between the two hanging blocks 54 and the immersion plate 48. When in use, the other end of the immersion plate 48 is suspended by the hanging ropes 47 mounted on the two hanging blocks 54 to prevent the immersion plate 48 from tipping over, which is safer.

[0029] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A cobalt-chromium alloy stent polishing auxiliary device, comprising an electrolytic cell (1), a power source (2), and a cathode rod (3) electrically connected to the cathode of the power source (2) and plugged into the electrolytic cell (1), wherein a feeding mechanism (4) is provided on the electrolytic cell (1), characterized in that: The feeding mechanism (4) comprises a column (41) fixedly mounted on the electrolytic cell (1), a slide groove (42) being provided on the outer wall of the column (41), a screw rod (43) being rotatably mounted in the slide groove (42), one end of the screw rod (43) passing through one end of the column (41) and a motor (44) being fixedly mounted at the end, a slider (45) matching the slide groove (42) being screwed onto the screw rod (43), a hanging plate (46) being fixedly mounted on the slider (45), a hanging rope (47) being fixedly mounted below the hanging plate (46), an immersion plate (48) being fixedly mounted on the end of the hanging rope (47) away from the hanging plate (46), and an anode rod (49) for electrically connecting to the anode of the power source (2) being fixedly mounted on the immersion plate (48).

2. The cobalt-chromium alloy stent polishing auxiliary device according to claim 1, characterized in that: The immersion plate (48) is arranged in an L shape, and one end of the anode rod (49) passes through the immersion plate (48) and extends outside the immersion plate (48).

3. The cobalt-chromium alloy stent polishing auxiliary device according to claim 2, characterized in that: A conductive ring (410) is screwed onto one end of the anode rod (49) located outside the immersion plate (48), and the conductive ring (410) is electrically connected to the power source (2) via a wire.

4. The cobalt-chromium alloy stent polishing auxiliary device according to claim 1, characterized in that: The immersion plate (48) is provided with a through hole (411), a pressing plate (412) is movably mounted between the bottom of the immersion plate (48) and the anode rod (49), and an arched handle (413) inserted into the through hole (411) is fixedly mounted on the pressing plate (412).

5. The cobalt-chromium alloy stent polishing auxiliary device according to claim 4, characterized in that: A screw rod (414) is screwed onto the arch handle (413), and the screw rod (414) is rotatably mounted on the top of the immersion plate (48). The screw rod (414) passes through the arch handle (413) and a knob (415) is fixedly mounted at the end thereof.

6. The cobalt-chromium alloy stent polishing auxiliary device according to claim 2, characterized in that: A scraper (416) is sleeved on the anode rod (49), and a plate ear (417) is fixedly mounted on the outer side wall of the scraper (416).

7. The cobalt-chromium alloy stent polishing auxiliary device according to claim 1, characterized in that: The auxiliary device further comprises a tilting mechanism (5), the tilting mechanism (5) comprising a support plate (51) fixedly mounted on the suspension plate (46), a winding roller (52) for winding up one of the suspension ropes (47) being rotatably mounted on the support plate (51), one end of the winding roller (52) passing through the support plate (51) and a servo motor (53) being fixedly mounted on the end thereof.

8. The cobalt-chromium alloy stent polishing auxiliary device according to claim 7, characterized in that: Two symmetrically arranged hanging blocks (54) are fixedly mounted on the other end of the hanging plate (46) away from the winding roller (52), and another set of hanging ropes (47) is fixedly mounted between the two hanging blocks (54) and the immersion plate (48).

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