Auxiliary anode device convenient to move for ion nitriding furnace

Abstract

The utility model discloses a convenient-to-move auxiliary anode device for an ion nitriding furnace, which comprises a base, a mica seat is fixed on the upper surface of the base, an auxiliary anode is inserted at the upper end of the mica seat, the upper end of the auxiliary anode is sleeved with a conductive part of which the height can be adjusted up and down, and the upper end of the conductive part is sleeved with a movable sleeve capable of moving up and down. And a spring is arranged between the top of the inner side of the movable sleeve and the upper end part of the conductive part. According to the utility model, the spring tightly pushes the movable sleeve to be upwards and elastically propped against the furnace cover of the nitriding furnace, and the movable sleeve is sleeved at the upper end of the conductive part, so that the conductive part guides the movable sleeve when moving, the deflection condition is avoided, and the conductive contact between the movable sleeve and a heat insulation screen on the lower surface of the furnace cover is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of ion nitriding furnaces, in particular to an auxiliary anode device which is easy to move and is used in ion nitriding furnaces. Background Art

[0002] When using an ion nitriding furnace for some workpieces that require inner hole nitriding, it is difficult to strike an arc in the middle of the inner hole due to the large aspect ratio of the inner hole, and the nitriding quality cannot be guaranteed. Therefore, an auxiliary anode device is required to perform nitriding treatment on the inner hole.

[0003] The Chinese patent with the announcement number CN216337914U discloses a movable auxiliary anode device for an ion nitriding furnace, including an auxiliary anode and a mica base, wherein the auxiliary anode is arranged at the center of the upper part of the mica base, and the upper and lower parts of the auxiliary anode are respectively formed with a conductive part and a mounting part, and a spring is arranged above the conductive part, and a spring cap is fixedly connected to the upper part of the spring, and an outer ring base is fixedly connected to the lower part of the outer wall of the mica base, and the mounting parts inside the upper end of the mica base are plugged into each other. The movable auxiliary anode device for an ion nitriding furnace can place the mica base at the required position on the cathode disk of the nitriding furnace through the cooperation among the mica base, the jack, the spring cap, the auxiliary anode and the spring, and after the furnace cover is closed, the spring cap will contact the heat shield in the furnace cover, so that the auxiliary anode is connected to the heat shield for conduction, thereby avoiding the need for inner hole nitriding of gear workpieces, and the difficulty of arcing in the middle part of the inner hole due to the large length-to-diameter ratio of the inner hole cannot ensure the nitriding quality.

[0004] When the above-mentioned movable auxiliary anode device of the ion nitriding furnace is used for the stack auxiliary anode, the spring connecting spring cap is placed on the auxiliary anode, and when the furnace cover is closed, the heat insulation screen and the spring cap are elastically pressed against each other to achieve contact and conduction. However, this elastic support method is prone to causing the spring and the spring cap to fall off due to the bending of the spring and the segregation of the spring cap, and the conductive contact between the spring cap and the heat insulation screen is unstable. Utility Model Content

[0005] In order to solve the problem of unstable conductive contact between the spring cap at the upper end of the auxiliary anode and the heat shield of the movable auxiliary anode device of the ion nitriding furnace, the present application provides an auxiliary anode device that is easy to move for the ion nitriding furnace, which adopts the following technical solution:

[0006] A movable auxiliary anode device for an ion nitriding furnace comprises a base, a mica seat is fixed on the upper surface of the base, an auxiliary anode is inserted at the upper end of the mica seat, a conductive part which can be adjusted in height up and down is mounted on the upper end of the auxiliary anode, and a movable sleeve which can be moved up and down is mounted on the upper end of the conductive part, and a spring is installed between the inner top of the movable sleeve and the upper end of the conductive part.

[0007] Optionally, a movable block is fixed to the upper end of the conductive part, and the diameter of the movable block is larger than the diameter of the conductive part.

[0008] Optionally, a sleeve hole is opened at the lower end of the conductive part, and an adjusting screw is threadedly installed on the outer side of the conductive part near the lower end.

[0009] Optionally, both left and right sides of the movable sleeve are threadedly mounted with limit screws blocking the lower surface of the movable block near the lower end, and the inner diameter of the movable sleeve is the same as the outer diameter of the movable block.

[0010] Optionally, a rod inserted into the sleeve hole is fixed to the upper end of the auxiliary anode, and a retaining ring is fixed near the lower end of the auxiliary anode.

[0011] Optionally, a fixing sleeve is fixed to the upper surface of the base, and the fixing sleeve is fixedly mounted on the mica seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, the spring presses the movable sleeve upward elastically and presses the cover of the nitriding furnace, and the movable sleeve is sleeved on the upper end of the conductive part so that the conductive part guides the movable sleeve when it moves, avoiding deflection, so that the conductive contact between the movable sleeve and the heat shield on the lower surface of the cover is more stable;

[0014] 2. The auxiliary anode is inserted into the sleeve hole of the conductive part through an insertion rod for telescopic adjustment, thereby adjusting the support height of the conductive part to better adapt to the height in the nitriding furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional view of a portable auxiliary anode device for an ion nitriding furnace of the utility model;

[0017] Figure 2 It is a schematic diagram of the conductive part of a portable auxiliary anode device for an ion nitriding furnace shown in the utility model;

[0018] Figure 3 It is a schematic diagram of a movable sleeve of an auxiliary anode device for an ion nitriding furnace shown in the utility model;

[0019] Figure 4The utility model is a schematic diagram of an auxiliary anode of an auxiliary anode device which is easy to move for an ion nitriding furnace.

[0020] In the figure: 1. base; 11. fixed sleeve; 2. mica seat; 3. auxiliary anode; 31. plug rod; 32. retaining ring; 4. conductive part; 41. movable block; 42. sleeve hole; 43. adjusting screw; 5. movable sleeve; 51. limit screw; 6. spring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0022] Please refer to Figure 1 As shown, a movable auxiliary anode device for an ion nitriding furnace comprises a base 1, a mica seat 2 is fixed on the upper surface of the base 1, and an auxiliary anode 3 is inserted at the upper end of the mica seat 2, a fixing sleeve 11 is fixed on the upper surface of the base 1, and the fixing sleeve 11 is fixedly mounted on the mica seat 2, and the mica seat 2 is positioned and fixed by the fixing sleeve 11, a conductive part 4 which can be adjusted in height up and down is mounted on the upper end of the conductive part 4, and a movable sleeve 5 which can be moved up and down is mounted on the upper end of the conductive part 4, a spring 6 is installed between the inner top of the movable sleeve 5 and the upper end of the conductive part 4, the spring 6 presses the movable sleeve 5 elastically upwards and presses it on the furnace cover of the nitriding furnace, and the movable sleeve 5 is mounted on the upper end of the conductive part 4 so that the conductive part 4 guides the movable sleeve 5 when it moves, and avoids deflection, so that the conductive contact between the movable sleeve 5 and the heat insulation screen on the lower surface of the furnace cover is more stable.

[0023] Please refer to Figure 2 As shown, a movable block 41 is fixed to the upper end of the conductive part 4 for stably guiding the movable sleeve 5 when it moves, and the diameter of the movable block 41 is larger than the diameter of the conductive part 4 so that it can cooperate with the limit screw 51 for limiting, and a sleeve hole 42 is opened at the lower end of the conductive part 4 for sleeve connection with the auxiliary anode 3, and an adjusting screw 43 is threadedly installed on the outer side of the conductive part 4 near the lower end for locking and fixing during sleeve connection.

[0024] Please refer to Figure 3As shown, the left and right sides of the movable sleeve 5 are threadedly installed near the lower end with limit screws 51 blocking the lower surface of the movable block 41. The limit screws 51 block the lower side of the movable block 41 to limit the upward movement of the movable sleeve 5, and the inner diameter of the movable sleeve 5 is the same as the outer diameter of the movable block 41 to achieve stable guidance when they move relative to each other.

[0025] Please refer to Figure 4 As shown, the upper end of the auxiliary anode 3 is fixed with a rod 31 inserted in the sleeve hole 42. The auxiliary anode 3 is inserted in the sleeve hole 42 through the rod 31 to perform telescopic adjustment, thereby adjusting the support height of the conductive part 4 to better adapt to the height in the nitriding furnace. A retaining ring 32 is fixed near the lower end of the auxiliary anode 3 for installation limit insertion on the mica seat 2.

[0026] Working principle: When using the device of the utility model, after loading the workpiece and the tooling into the furnace, place the base 1 and the mica seat 2 at the required position on the cathode disk of the nitriding furnace, pass the auxiliary anode 3 through the middle of the inner hole of the desired nitriding workpiece without contacting the workpiece, and insert the auxiliary anode 3 on the mica seat 2, and then directly cover the furnace cover. At this time, the elastic pressure of the spring 6 makes the movable sleeve 5 press against the heat insulation screen in the furnace cover to make contact, so that the auxiliary anode 3 is connected to the heat insulation screen for conductivity, and the inner hole of the workpiece can be nitrided.

[0027] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A portable auxiliary anode device for an ion nitriding furnace, comprising a base (1), characterized in that: A mica seat (2) is fixed to the upper surface of the base (1), and an auxiliary anode (3) is inserted into the upper end of the mica seat (2); a conductive part (4) whose height can be adjusted up and down is sleeved on the upper end of the auxiliary anode (3); and a movable sleeve (5) that can be moved up and down is sleeved on the upper end of the conductive part (4); a spring (6) is installed between the inner top of the movable sleeve (5) and the upper end of the conductive part (4).

2. The portable auxiliary anode device for an ion nitriding furnace according to claim 1, characterized in that: A movable block (41) is fixed to the upper end of the conductive part (4), and the diameter of the movable block (41) is greater than the diameter of the conductive part (4).

3. The portable auxiliary anode device for an ion nitriding furnace according to claim 2, characterized in that: A sleeve hole (42) is provided at the lower end of the conductive part (4), and an adjusting screw (43) is threadedly mounted on the outer side of the conductive part (4) near the lower end.

4. The portable auxiliary anode device for an ion nitriding furnace according to claim 2, characterized in that: Limit screws (51) are threadedly mounted on both left and right sides of the movable sleeve (5) near the lower end to block the lower surface of the movable block (41), and the inner diameter of the movable sleeve (5) is the same as the outer diameter of the movable block (41).

5. The portable auxiliary anode device for an ion nitriding furnace according to claim 3, characterized in that: An insertion rod (31) inserted into the sleeve hole (42) is fixed to the upper end of the auxiliary anode (3), and a retaining ring (32) is fixed near the lower end of the auxiliary anode (3).

6. The portable auxiliary anode device for an ion nitriding furnace according to claim 1, characterized in that: A fixing sleeve (11) is fixed on the upper surface of the base (1), and the fixing sleeve (11) is fixedly mounted on the mica seat (2).

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