Hollow screw micro-arc oxidation equipment

Abstract

The utility model relates to the technical field of medical instruments, in particular to hollow nail micro-arc oxidation equipment which comprises an oxidation tank, a mounting frame is fixedly arranged at the bottom in the oxidation tank, a cathode insulating plate, an anode plate and an anode insulating plate are arranged on the mounting frame from bottom to top, and a supporting column is fixedly connected between the cathode insulating plate and the anode plate. The upper side of the anode insulating plate, the lower side of the anode plate and the lower side of the cathode insulating plate are respectively connected with a first clamp body, a second clamp body and a third clamp body, the bottom of the second clamp body is connected with a hollow nail, and the lower part of the hollow nail is mounted on the upper side of the cathode insulating plate; the probe cathode penetrates through the third clamp body, the hollow nail, the second clamp body and the first clamp body from bottom to top; and the probe cathode and the anode plate are electrically connected with the cathode and the anode of the micro-arc oxidation power supply respectively. According to the utility model, the probe cathode penetrates through the hollow nail, and the outer surface of the hollow nail and the surface of the internal through hole are subjected to micro-arc oxidation through the high-frequency pulse power supply, so that the corrosion resistance of the inner and outer surfaces of the hollow nail is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a hollow nail micro-arc oxidation device. Background Art

[0002] Magnesium alloy bone nails are currently widely used as implantable devices because they can be degraded and absorbed in the human body, do not require secondary surgery to remove, and the density and elastic modulus of magnesium alloys are close to those of human bone tissue, which can reduce stress shielding effects and facilitate the healing of bone tissue. However, due to the rapid degradation rate of magnesium alloys in body fluids and the short mechanical service life, the surface of the bone nails needs to be plated. Since the internal through-hole diameter of magnesium alloy hollow nails is small, the existing coating equipment cannot reach into the through-hole, so it is impossible to complete the coating treatment on the inside of the hollow nail and cannot improve the internal mechanical properties of the hollow nail. Utility Model Content

[0003] The utility model aims to solve the above problems and provides a hollow nail micro-arc oxidation device, which adopts the following technical solutions:

[0004] A hollow nail micro-arc oxidation device comprises an oxidation tank, wherein an electrolyte is placed in the oxidation tank, a mounting frame is fixedly arranged at the bottom of the oxidation tank, a cathode insulating plate, an anode plate and an anode insulating plate are arranged on the mounting frame in sequence from bottom to top, a support is fixedly connected between the cathode insulating plate and the anode plate, an upper side of the anode insulating plate, a lower side of the anode plate and a lower side of the cathode insulating plate are respectively connected to a first clamping body, a second clamping body and a third clamping body, a hollow nail is connected to the bottom of the second clamping body, and a lower part of the hollow nail is arranged on the upper side of the cathode insulating plate; a cathode probe penetrates the third clamping body, a hollow nail, a second clamping body and a first clamping body in sequence from bottom to top; the cathode probe and the anode plate are respectively electrically connected to the cathode and anode of a micro-arc oxidation power supply.

[0005] On the basis of the above scheme, the first clamp body, the second clamp body and the third clamp body have the same structure and include stud bolts, spring clamps, nuts and nuts. One end of the stud bolt is installed on the cathode insulating plate or the anode plate or the anode insulating plate, and the other end is connected to the spring clamp. The spring clamp clamps a hollow nail or a cathode probe. The nut is sleeved on the outside of the stud bolt, and the nut is connected to one end of the stud bolt connected to the spring clamp.

[0006] Preferably, there are multiple hollow nails on the cathode insulating plate, and they are distributed in parallel in the horizontal direction.

[0007] Preferably, a plurality of cathode insulating plates are arranged on the mounting frame.

[0008] Preferably, a first mounting hole is provided on the cathode insulating plate, and a first mounting bolt for connecting the cathode insulating plate to the mounting frame is provided in the first mounting hole; a second mounting hole is provided on the anode plate, and a second mounting bolt for connecting the anode plate to the anode insulating plate is provided in the second mounting hole.

[0009] Based on the above solution, the first mounting hole and the second mounting hole are respectively arranged at the edges of the cathode insulating plate and the anode plate.

[0010] The beneficial effects of the utility model are as follows: the hollow nail is immersed in the electrolyte as a whole, and a cathode is penetrated through the hollow nail, and micro-arc oxidation is performed on the outer surface and the inner through-hole surface of the hollow nail by a high-frequency pulse power supply to form a dense oxide film, so as to effectively improve the corrosion resistance of the inner and outer surfaces of the hollow nail; cathode insulating plates and clamp bodies can be arranged in batches, which greatly improves the oxidation treatment efficiency of the hollow nails. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : Schematic diagram of the structure of the utility model;

[0012] Figure 2 : Schematic diagram of the internal structure of the oxidation tank of the utility model;

[0013] Figure 3 : A sectional view of a part of the structure of the utility model;

[0014] Figure 4 : The utility model Figure 3 Enlarged view of part A in the middle. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the description of the present utility model, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0018] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0019] like Figures 1 to 4 As shown, a hollow nail micro-arc oxidation device includes an oxidation tank 11, wherein the oxidation tank 11 contains electrolyte, a mounting frame 12 is fixedly arranged at the bottom of the oxidation tank 11, a cathode insulating plate 21, an anode plate 23 and an anode insulating plate 24 are arranged on the mounting frame 12 in sequence from bottom to top, and a support 22 is fixedly connected between the cathode insulating plate 21 and the anode plate 23 to separate the cathode insulating plate 21 from the anode plate 23. The upper side of the anode insulating plate 24, the lower side of the anode plate 23 and the lower side of the cathode insulating plate 21 are respectively connected to the first clamp body 31, the second clamp body 32 and the third clamp body 33, the bottom of the second clamp body 32 is connected to the hollow nail 51, and the lower part of the hollow nail 51 is installed on the upper side of the cathode insulating plate 21; the cathode probe 52 passes through the third clamp body 33, the hollow nail 51, the second clamp body 32 and the first clamp body 31 from bottom to top in sequence, and the first clamp body 31 and the third clamp body 33 are used to clamp the cathode probe 52; the cathode probe 52 and the anode plate 23 are respectively electrically connected to the cathode and anode of the micro-arc oxidation power supply, and the hollow nail 51 is immersed in the electrolyte, and the inside and outside of the hollow nail 51 are micro-arc oxidized by a high-frequency pulse power supply to form a dense oxide film on the surface.

[0020] like Figure 4 As shown, the first clamp body 31, the second clamp body 32 and the third clamp body 33 have the same structure and include a stud bolt 41, a spring clamp 42, a nut 43 and a nut 44. One end of the stud bolt 41 is installed on the cathode insulating plate 21 or the anode plate 23 or the anode insulating plate 24, and the other end is connected to the spring clamp 42. The hollow nail 51 or the cathode probe 52 is clamped in the spring clamp 42. The nut 43 is sleeved on the outside of the stud bolt 41, and the nut is connected to one end of the stud bolt 41 connected to the spring clamp 42.

[0021] Preferably, there are multiple hollow nails 51 on the cathode insulating plate 21, and they are distributed in parallel in the horizontal direction. Multiple cathode insulating plates 21 are arranged on the mounting frame 12, so as to realize batch processing and improve oxidation efficiency.

[0022] A first mounting hole is provided on the cathode insulating plate 21, and a first mounting bolt for connecting the cathode insulating plate 21 to the mounting frame 12 is provided in the first mounting hole; a second mounting hole is provided on the anode plate 23, and a second mounting bolt for connecting the anode plate 23 to the anode insulating plate 24 is provided in the second mounting hole. The first mounting hole and the second mounting hole are respectively provided at the edges of the cathode insulating plate 21 and the anode plate 23, so as to facilitate the installation and connection of the cathode insulating plate 21 and the anode plate 23.

[0023] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A hollow nail micro-arc oxidation device, characterized in that: The invention comprises an oxidation tank (11), wherein the oxidation tank (11) contains an electrolyte, a mounting frame (12) is fixedly arranged at the bottom of the oxidation tank (11), a cathode insulating plate (21), an anode plate (23) and an anode insulating plate (24) are arranged on the mounting frame (12) in order from bottom to top, a support (22) is fixedly connected between the cathode insulating plate (21) and the anode plate (23), and a first clamp is respectively connected to the upper side of the anode insulating plate (24), the lower side of the anode plate (23) and the lower side of the cathode insulating plate (21). The second clamp body (31), the second clamp body (32) and the third clamp body (33), the bottom of the second clamp body (32) is connected to a hollow nail (51), and the lower part of the hollow nail (51) is installed on the upper side of the cathode insulating plate (21); the cathode probe (52) passes through the third clamp body (33), the hollow nail (51), the second clamp body (32) and the first clamp body (31) from bottom to top in sequence; the cathode probe (52) and the anode plate (23) are electrically connected to the cathode and anode of the micro-arc oxidation power supply respectively.

2. A hollow nail micro-arc oxidation equipment according to claim 1, characterized in that: The first clamp body (31), the second clamp body (32) and the third clamp body (33) have the same structure and comprise a stud bolt (41), a spring clamp (42), a nut (43) and a nut (44); one end of the stud bolt (41) is mounted on the cathode insulating plate (21) or the anode plate (23) or the anode insulating plate (24), and the other end is connected to the spring clamp (42); a hollow nail (51) or a cathode probe (52) is clamped in the spring clamp (42); the nut (43) is sleeved on the outside of the stud bolt (41), and the nut is connected to one end of the stud bolt (41) connected to the spring clamp (42).

3. The hollow nail micro-arc oxidation equipment according to claim 1, characterized in that: There are multiple hollow nails (51) on the cathode insulating plate (21), and they are distributed in parallel in the horizontal direction.

4. The hollow nail micro-arc oxidation equipment according to claim 1, characterized in that: A plurality of cathode insulating plates (21) are arranged on the mounting frame (12).

5. The hollow nail micro-arc oxidation equipment according to claim 1, characterized in that: The cathode insulating plate (21) is provided with a first mounting hole, in which a first mounting bolt for connecting the cathode insulating plate (21) to the mounting frame (12) is arranged; the anode plate (23) is provided with a second mounting hole, in which a second mounting bolt for connecting the anode plate (23) to the anode insulating plate (24) is arranged.

6. A hollow nail micro-arc oxidation equipment according to claim 5, characterized in that: The first mounting hole and the second mounting hole are respectively arranged at the edges of the cathode insulating plate (21) and the anode plate (23).

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